Nghiên cứu chế tạo vật liệu hấp phụ sét hữu cơ (organoclays) trên cơ sở nguồn nguyên liệu bentonit và ứng dụng để xử lý các chất hữu cơ độc hại trong nước

Viee nghien cuu che tao va su dung vat lieu hap phu set huu ca Organoclay dua tren ca sa Bentonite bien tinh da dugc phat trien manh me trong khoang thai gian 10 nam gan day va da ma ra

DAI HOC QUOC GIA HA NQI TRl/OfNG DAI HOC KHOA HQC i V NHIEN

DE TAI NGHIEN CUtJ KHOA HQC DAC BI?T

CAP DAI HQC QUOC GIA

NGHI EN C i r u CHE TAG VAT LIEU HAP PHV SET HUtJ CO (ORGANOCLAYS) TREN CO SOf NGUON NGUYEN LIEU BENTONIT VA iTNG DUNG DE XlT LY CAC CHAT HUU CO

D Q C H A I T R O N G NUOfC

Ma so: QG-06-10

Chu nhiem de tai: PGS.TS Nguyen Van Noi

DAI HOC QUOC GIA HA NOI_

TRUNG TAM THONG TIN THU V I E N

uL^eLKt(Wk J

Ha Noi - 2008

BAO CAO TOM TAT KET QUA

DE TAI NGHIEN CUU KHOA HQC BAG BEET

GAP DAI HQG QU6C GIA

Ma so: QG-06 -10

l.Tendetai:

Tilng Viet: "Nghien ciru chi tao vat lieu hdpphu set hitu ca (organoclays) tren ca so

nguSn nguyen lieu bentonite va vmg dung di xic ly cdc chat hiru ca doc hgi trong nirac"

Tilng Anh: ''Development of organoclays based on bentonite and their use in the

treatment of hazardous organic chemicals in water and wastewater''

2 Chu tri de tai: PGS.TS Nguyin Van Noi, Khoa Hoa hoc, Truang DHKHTN

3 Cac can bo tham gia:

1 PGS TS Nguyen Dinh Bang, Truong DHKHTN

2 PGS TS Nguyen Die Vinh, Truang DHKHTN

3 TS.NguylnVietHung, Truang DHKHTN

4 CN Tran Dinh Trinh, Truang DHKHTN

5 HVCH Duong Thi Hanh, Truang DHKHTN

4 Thoi gian thyc hien: B^t d^u tu thang 1 nam 2006 den thang 1 nam 2008

5 Muc tieu cua de tai:

Nghien euu kha nang sir dung nguyen lieu khoang set bentonite de che tao vat lieu set huu ca va ung dung trong qua trinh xu ly cac nguon nuac bi 6 nhiem cac chat huu ca doc hai Buae dau nghien cuu xay dung qui trinh cong nghe su dung set hiru ca

de tach loai cac chat huu ca doc hai trong cac nguon nuac bi 6 nhiem

6 Tom tat noi dung nghien cihi cua de tai va ket qua dat dvac

- Noi dung

+ Che tao va xac dinh cau true cua vat lieu set hiju ca

+ Khao sat kha nang xu ly cua vat lieu che tao duge

- Phuong phdp nghien ciru:

+ Nghien cuu sir hinh thanh set huu ca nha qua trinh trao doi ion cua bentonite vai cation huu ca dang [(CH3)3NR]" Cau true ciia set Huu ca dugc xac dinh bang cac phuong phap XRD, IR, SEM, TEM Dien ticH b^ mat rieng duge xac dinh bing thi6t bi do Hap phu bl mat NOVA 2200 - Quanta CHROME

+ Danh gia kha nang sir dung set huu ca che tao dugc de xu ly cac chat huu ca doc hai trong nu6c thai det nhugm

- San pham cong nghe:

+ Vat lieu set hmi ca ung dung trong xu ly nguon nuac bi 6 nhiem boi cac hoa chat pham nhugm doc Hai

- Kha nang irng dung thicc te:

+ Kha nang ung dung thuc te cua vat lieu set Huu ca che tao dugc de xu ly

nuac thai bi 6 nhiem boi cac hoa chat pham nhugm doc hai

- Ket qua ddo tao:

+ So cu nhan dugc dao tao trong khuon kho de tai: 3

- So thac sT dugc dao tao trong khuon kho de tai: 1

- Da cong bo 01 bdo cdo tai Hoi nghi Khoa hoc quoc te, 01 bdo ado tai Hoi nghi Khoa

hoc Truang DHKHTN, 02 bdi bdo trong pham vi thuc hien de tai

7 Tinh hinh kinh phi cua de t a i :

- Tong kinh phi dugc cip 60.000.000 dong

- Da chi theo dung noi dung hgp dong : 60.000.000 d6ng

XAC N H A N G U A KHOA GHU TRI DE TAI

CO QUAN GHU TAI DE TAI

UlCTt I -rry\ r f ^ , j r

SUMMARY OF THE PROJECT

1 Project Title: ''Development of organoclays based on bentonite and their use in

the treatment of hazardous organic chemicals in water and wastewater"

2 Project code: QG- 06- 09

3 Project Leader: Assoc.Prof Dr Nguyen Van Noi

4 Participants:

1 Assoc.Prof Dr Nguyen Dinh Bang,

2 Assoc.Prof Dr Nguyen Dae Vinh,

3 Dr Nguyen Viet Hung ,

4 BSc Tran Dinh Trinh,

5 Master student Duong Thi Hanh

5 Objectives and contents:

- Development of organoclays by modifying bentonite with HDTMA and TIOT

-Characterization of organoclay structure by XRD, Thermal analysis, IR and SEM

- Sorption materials-organoclays received from chemical modification of bentonite

by HDTMA and TIOT

- Organoclays were successfully applied in the treatment of wastewater from Duong Noi textile handicraft village

Publication

- 01 scientific report on the international Symposium (the third ISAMAP in Korea)

- 01 report on the scientific conference of Hanoi University of Science

Education results

Graduated Students (MS): 1 Undergraduated Students (BS): 3

MO DAU

O Viet Nam bentonite la mot loai khoang set re tien, c6 tru lugng Ian va duge

su dung rgng rai trong nhieu nganh cong nghiep nhu xay dung, luyen kim, khai thac

va che bien dau mo Dae biet, nha kha nang hap phu va trao doi ion tot nen Bentonite Cling da dugc ling dung rgng rai trong xu ly moi truang Viee nghien cuu che tao va su

dung vat lieu hap phu set huu ca (Organoclay) dua tren ca sa Bentonite bien tinh da

dugc phat trien manh me trong khoang thai gian 10 nam gan day va da ma ra nhung ung dung to Ian trong viee xu ly cac nguon nuac bi 6 nhiem chat huu eo

Nha kha nang hap phu va kha nang trao doi ion tot nen bentonit da dugc ung dung rat nhieu trong xu ly moi truang Bang each gan ket vao bentonit mot goe huu

CO, bentonit duge bien tinh thanh vat lieu ua huu ca Hon (set huu ca) Set huu ca dugc sir dung la vat lieu c6 kha nang hap phu tot cac chat 6 nhiem c6 nguon goc huu co nhu cac loai pham nhugm

O nuac ta, viee nghien cuu, ung dung set huu ca chu yeu trong llnh virc dlu khi; set hiru ca da dugc nghien cuu thanh cong de pha dung dich khoan goe dau Tuy nhien,

viee ung dung set hiJu ca trong xu ly nuac thai moi chi a nhijmg buae ban ddu D^ tai

nghien cuu dugc xay dung'nham tan dung nguon khoang set bentonit re ti^n, c6 tru lugng Ian lam vat lieu xu ly cac chat huu ca doe hai, dac biet la hoa ch4t det nhugm, trong nuac thai mot each hieu qua Viee nghien cuu che tao vat lieu hip phu set huu

ca tren ca so bentonit bien tinh va ung dung trong xu ly nuac thai nganh det nhugm c6

y nghia khoa Hoe va thuc tien Ion, gop phan hoan thien He vat lieu hip phu su dung trong ITnh virc xu ly nuac thai cong nghiep va sinh hoat

PHAN 1: TONG QUAN

1,1 Gidi thieu ve vat lieu Set h(ru ca du^ tren cor so* bentonit bien tinh

LLl Khdt qudt vi khoang set bentonit [5,7]

Bentonit la khoang set theo ggi theo ten cua mo set "Benton", c6 thanh phan chinh la montmorillonit vai cong thuc hoa Hgc tong quat dang (OH)4Al4Si802o.nH20 Ngoai ra trong bentonit con mot so khoang khae nhu caolinit, mica, canxit, thach anh, cac muoi kiem

Thanh phan hoa Hgc cua montmorillonit, ngoai hai nguyen to kim loai chinh la

Si va Al con c6 cac nguyen to khae nhu Fe, Ca, Mg, Ti, K, Na Ty le AI2O3: Si02 nam trong khoang 1:2 den 1:4 Bentonit dugc chia thanh hai loai:

- Bentonit truang no eo thanh phan chinh la montmorillonit Na, hay con ggi la Bentonit natri Khi bao hoa nuac bentonit natri eo the truang no den 20 Ian

- Bentonit khong truang no c6 thanh phan chinh la montmorilonit canxi, con ggi

la bentonit canxi

7 7.2 Cau true tinh the vd thanh phan hoa hgc cua Montmorillonit

Trong Montmorillonit cac nguyen tu Si nam a tam cua mang tu dien eon cac nguyen tu Al nam a tam cua mang bat dien va mot s6 ion nhom bi thay th6 bing ion magic, cong thuc tong quat nhu sau:

(Na, Ca)(Al, Mg)6(Si40]o)3(OH)6.nH20 (Hydrated Sodium Calcium Aluminum

Magnesium Silicate Hydroxide)

• Silic

o Oxi

• Magie M: Kim loai den bu dien tich X: so ion magie

Hinh 5: Mang cau true Montmorillonite

Montmorillonit la aluminosilicat tu nhien c6 ciu true lap ki§u 2:1 diota Tinh th^ montmorillonit duge cau tao tu hai mang tu dien k^t vai mot mang bat dien a giua Giua cac lap cau true la cac cation trao d6i va nuac hydrat Khoang each giua cac lap trong

ciu true ca ban cua Montmorillonit la 9,6 A° Khoang each do bi thay doi nhieu hay it tuy thugc vao s6 lugng, ban chat cation trao doi va lugng nuac hap thu, thuong len tai 15A° Khoang each nay c6 the tang den 40A° khi cac cation bi thay the boi ion v6 ca phan cue, cac phire ca kim, polyme v6 ca, cac phan tu huu ca Ducri day la so do cau true khong gian mang luoi ciia lap Montmorillonit trung hoa dien

d mang bat dien Al^" thuong bi thay the boi Mg^", con mang tu dien Si'*" bi thay

the boi Al^"hoac Fe^" Lugng Si'*" bi thay the boi Ap"^ khong vugt qua 15%, Su thay the dong hinh tren lam cho be mat tinh the montmorillonit xuat hien cac dien tich am do cac cation kim loai thay the c6 dien tich duang thap Han, Cac dien tich am nay dugc trung hoa boi cac cation kim loai kiem (Ca, Na, Li, K) nam giija hai phien set Cac cation nay

de dang bi hydrat hoa va/hoac dugc thay the bang cation khae

a Tinh chat trao doi cation

Nhu da trinh bay trong phan truae, trong mang cau true cua montmorillonit thuong xay ra sir thay the dong Huih cua cac cation Ket qua cua su thay thi nay la xuit hien cac dien tich am tren be mat philn set D6i vai bentonit, su thay the d6ng hinh chu y^u xay ra trong lop bat dien giua Hay lap tu dien cua phi6n set Lien kit cua cac cation vai b6 mat philn set la tuang doi yeu, vi vay cac cation nay de dang di ehuyin va trao ddi vai cac cation khae Kha nang trao doi cation cua bentonit phu thugc vao hoa tri va ban kinh cation trao doi Thong thuong, cac cation c6 hoa tri nho va ban kinh nho de bi trao d6i Han CJ cung nong do kha nang thay tH6 cua cac cation theo trat tu sau:

H" > Al^" > Ca^" > Mg^"^ > K"" > NHU" > Na"

Dung lugng trao doi cation CEC (cation exchange capacity) dugc dinh nghia la t6ng s6 cation trao doi tren mot dan vi kh6i lugng set, thong thuong dugc tinh bang mili duang lugng gam (meq) tren lOOg set kho

Vi tri trao doi ben ngoai

Vi tri trao doi ben trong

o n^

1

Hinh 7 Cdc vi tri trao doi cation tren hat set

Dung lugng trao doi cation ciia set gom hai phan: dung lugng trao doi cation tren b§ mat phien set c6 gia tri khoang 5-10 meq, trong khi dung lugng trao doi ben trong

a giija cac lap cau true vao khoang 40-120 meq

Do kha nang de dang trao doi ion nen khoang set eo rat nhiet ung dung trong cac ITnh vue khae nhau Vi du su trao doi Ca^" bang Na" da chuyen hoa bentonit canxi kem truang no thanh bentonit natri eo do truong no cao, ung dung de pha che dung dich khoan goe nuac Hoae trao doi ion kim loai vai caCvamin bac 4 de tao thanh set huu eo lam thay doi tinh chat eo ban cua set, tu set ua nuac thanh set ua dau Set huu

CO khi do duge sir dung lam dung dich khoan goe dau, lam phu gia che tao vat lieu composit, lam vat lieu xu ly moi truang

b Tinh chat truang na

Trucmg no la mot trong nhiing tinh chat dac trung cua khoang set Khi tiep xuc vai nuac hoae moi truang khong khi am set bi truang no, the tich eo the tang len 15-20 Ian so vai the tich kho ban dau Trong qua trinh truang na, nuac xam nhap vao va dugc giu lai trong khoang khong gian giira cac phien set Lugng nuac hip phu nay phu thugc rat nhieu vao kha nang hydrat hoa cua cac cation Kha nang hydrat Hoa cua cac cation tang theo thu tu sau:

Li" > Na" > NH4^ > K" > Mg^" > Ca^" > Al^" > H"

KicH thuae, Hinh dang cua cac cation giua cac lap cung anh Huong den kha nang Hydrat hoa va truang no set Cac cation c6 ban kinh hydrat hoa Ian se lam cho khoang each giija hai phien set rgng ra, tao dieu kien cho sir trucmg no set Ben canh do, sir lien ket ciia cac cation kim loai va dien tich tren be mat phien set ciing anh Huong ddn su

truang na

c Tinh chat hdpphu

Tinh chat hap phu cua bentonit dugc quyet dinh boi tinh chat be mat va cau true lap cua chung Dien tich be mat cua bentonit vao khoang 200-760 mVg Dien tich be mat cua bentonit gom dien tich be mat ngoai va dien tich be mat trong Dien tich be mat trong dugc xac dinh boi khoang khong gian giua cac lap trong cau true tinh the, dien tich be mat ngoai phu thugc vao kich thuoc hat, hat cang nho thi dien tich be mat ngoai cang Ian, do do kha nang hap phu cang cao

Su Hap phu a be mat trong cua bentonit chi xay ra khi chat bi hap phu la chat huu CO dang cation hoae chat hiru eo phan cue Doi vai cac chat dang cation thi bentonit hap phu chung theo eo che trao doi cation Sir hap phu trao doi nay phu thuoc vao dien tich, hinh dang, kich thuoc cua cation trao doi va dung lugng trao doi cation cua khoang set Cac chat huu eo phan cue c6 kich thuoc va khoi lugng nho bi hap phu

bang each lien ket true tiep vai cac cation trao doi nam giua cac lap hoae lien kk vai

cac cation do qua cau H2O Con chat huu ca phan cue eo kich thuoc va khoi lugng Ian, lien ket true tiep vai oxi day cua tu dien trong mang luai tinh the bing lire Van der Wall

1.2 Vat lieu hap phu set hihi ca (Organoclay)

Set huu ca hay con ggi la set ua dau (organophilic clay) la san pham cua phan ung trao d6i ion giua set montmorillonit hoae Heetorit c6 cac cation trao d6i Na", Ca^" nam a giua cac lap set vai cac cation huu ca chu y6u la hgp chit amin Phuong phap trao doi cac cation giira eac lop cua Bentonite vai cation amin bac 4 eo dang [(CH3)3NR]" trong do R thuong la nhom alkyl mach dai tao nen mot dang Bentonite

bien tinh ggi la Organoclay, eon dugc ggi la Set huu co Hay set ua diu

Bent-Na + f(CH3)sNRJ^= Bent-NRfCHjJs + yVa"

Sir CO mat cua eac cation bac 4 trong khong gian giua hai philn set khong chi lam cho khoang each giua cac lop philn set (dooi) tang len ma con lam cho set co tinh

chat ua dau Khi do, set se co kha nang truong no va phan tan duqc trong cac dung

moi huu CO khae nhau

Hinh 8 Mo hinh cau true cua set hiru ca

Khae vai cac hgp chat huu co phan cue, cation huu ca thay the cac cation v6 co nam giua hai phien set va lien ket chat che vai be mat phien set Su tuong tac nay ggi

la hap phu trao doi, nguyen tu nito eiia cac amin gan chat vao be mat phien set, con duoi hydrocabon se thay the vi tri cac phan tu nuac da bi hap phu tu truoc nam song song hoae vuong goe vai be mat phien set Lugng cation Hun co trao doi co the Ian Hon dung lugng trao doi cation cua set Vai hgp chat amin bac 4 co 3 nhom methyl va

1 nhom hydro cacbon mach dai thi montmorillonit co the Hap phu mot lugng Ion cation huu co, bang 2,5 Ian dung lugng trao doi cation cua set Lugng amin bac 4 du

se bi hap phu vat ly len cac cation huu co da bi hap phu tu truae

Cac phan tu amin bac 4 sau khi thay the vai cac cation kim loai eo the sap xep thanh lop don hoae lop kep trong khong gian giua Hai ptiien set tuy thugc vao ban chit

va ham lugng amin trao doi Vat lieu set hiru ca dugc chia ra lam 2 loai [9]

- Khi R la eac alkyl mach ngan thi vat lieu eo ten la set huu co hip phu (Adsorptive Organoclay) Vat lieu loai nay c6 tinh ky nuac va ai lire voi eac chit hiju

CO thuong thap, the hien a he s6 phan b6 Kow < 104 Ngoai ra, bh mat hip phu cua vat

lieu loai nay thuong chi eo cau true khong gian 2 ehilu, do do su hip phu chu ylu la

su hap phu mao quan

- Khi R la cac alkyl mach dai thi vat lieu la set huu co eo ai lire Ion vai chit huu

CO (Organophilic Organoclay) Vat Heu nay co tinh ky nuac va ai lire vai cac chit hiru

CO cao Hon Han, the hien a he so phan bo Kow > 104 Voi su co mat eiia nhom alkyl mach dai nay thi be mat hap phu cua vat lieu se co ciu true khong gian 3 chi^u, do do

su Hap phu se duge quyet dinh chinh la do ai lire cua nhom alkyl voi eac chit huu co Set hiru ca dugc ung dung trong nhieu linh vue khae nhau Trong cong nghiep dau khi, set Hixu eo duge dung lam chat tao gel pha dung djch khoan g6e diu, chit lam sacH dau trong nhij tuong dau nuoe Ngoai ra, set Huu co eon dugc sir dung trong son dau, muc, my pham, chat chong tham, san xuat dau boi tran Gin day, set huu ea eon

dugc ung dung lam phu gia bien tinh vat lieu polime vai muc dich tang do ben ca hgc, tinh chiu nhiet cua vat lieu de tong hgp ra eac dang vat lieu nanocomposit co chat lugng cao [5]

Ngoai ra, mach hidrocacbon khi dugc chen vao giiia cac lop cua bentonit se lam tang tinh ky nuac cua bentonit, do do lam tang ai lire cua vat lieu voi cac chat huu co, dac biet la cac chat huu ca mach vong, chat co phan tu lugng Ion Nho dac diem do, set huu eo co the ung dung de lam vat lieu xu ly nuac nhiem cac hgp chat huu co doc hai voi moi truang CHue nang lam sach nuac diu tien phai ke den la tach loai eac hgp chat Huu CO doc Hai eo do tan thap trong nuac, dac biet la diu, creozol, PAHs va PCBs Mot so tai lieu nghien cuu chi ra rang, tham chi kha nang Hap phu ciia set huu co con vugt xa than Hoat tinh Mot he thong xii ly nuac 6 nhiem dau va hgp chat BTEX (benzen - toluen - etylbenzen - xylen), dat hieu qua tot la khi he thong su dung ket hgp set huu co/than hoat tinh, vi set huu co co kha nang hap phu tot Hon doi voi nhom hgp chat toluene, xylenes, trong khi do than Hoat tinh se xu ly tot benzen [8,10,12]

PHAN II: CAC PrnTCfNG PHAP NGHIEN CUtJ

2.1 Xac dinh do tnronag nor cua bentonit va set hihi cff trong toluen

Xac dinh do truang no ciia bentonit va mau set huu co che tao dugc, su dung dung moi huu CO la toluen

2.2 Phuong phap nhieu xa tia X

Phuong phap nhieu xa tia X cho biet khoang each co ban dooi dac trung cho khoang each giua cac lop phien set ciia vat lieu bentonit truae va sau khi bien tinh

Mau bentonit va set hiJU co dugc phan tich tren may nhieu xa tia X XRD- D8 Advance- Brucker tai Khoa Hoa hgc, goc quet 20 thay doi tu LO - 40.99^, thai gian

quet mot buae la Igiay, goc mot buae quet 0.03°

2.3 Phuong phap pho hong ngoai

Phuong phap pho hong ngoai IR dung de phan tich cac dac diem va cac lien ket giira cac nguyen to trong mang luai tinh the Trong dai buae song 400-4000em"', pho hong ngoai cho biet nhimg dao dong lien ket trong mang cau true cua montmorillonit Dam pho hap thu ciia dao dong bien dang Si-0' trong tu dien Si04 nam trong khoang 420-470 cm"' Dam pho dac'trung cho lien ket Al-0 trong bat dien nam xung quanh 815 em"' Nhom OH" trong mang luai dugc dac trung boi dam pho nam xung quanh 3600 cm"'

Pho hong ngoai ciia bentonit va set hiru co dugc do tren thiet bi IR Nicolet-Model Nexus 670

2.4 Phuong phap phan tich nhiet

Phuong phap phan tich nhiet giup xac dinh cac hieu ung nhiet, sir thay d6i khdi

lugng ciia cac mau nghien euu ung voi cac qua trinh biln d6i xay ra a mot nhiet do xac

dinh

Dua vao cac ducmg cong phan tich nhiet DTA, TGA c6 th§ xac dinh duge sir bien doi thanh phan ciia bentonit va set hiru ca tuong ung vai sir mit di eiia nhom hiru

CO khi tang nhiet do

Mau bentonit va set hiru co duge nghien euu tren may phan tich nhiet Labsys TG/DSG-SETARAM, Khoa Hoa hgc, vdi cac dilu kien sau:

- Khoang nhiet do 30-800°C

- Toe do gia nhiet: 10 C/phiit

2.5 Phuong phap kinh hien vi dien tu quet (SEM)

Kinh hien vi dien tu quet la thiet bi nghien cuu cau tnic be mat ciia mau Do phan giai eiia kinh co the dat dugc 10'^ - 10*"^nm, do pHong dai 1cm hem gap nhieu Ian

so voi kinh hien vi quang hgc Nguyen tac ciia phuong phap nay la sii dung mot ehiim tia dien tii dugc dieu khien bang cac than kinh dien tu quet len be mat san pham Chiim tia nay se tuomg tac vai be mat ciia vat lieu va bi tan xa Vai moi loai cau tnic

be mat se cho su tan xa khae nhau, tir do cho hinh anh ve be mat vat chat ciing khae nhau,

Anh quet SEM ciia bentonit va set hiru co dugc chup tren thiet bi Jeol JSM

5410 Lv Scanning Electron Microscopy tai Khoa Vat Ly- Truong DH KHTN

2.6 Xac dinh dung luong trao doi cation (CEC) cua Bentoniet -Na

Dung lugng trao doi cation dugc xac dinh bang phuong phap xanh methylen (theo tieu chuan API - 13 A)

2.7 Phuong phap trac quang UV-VIS xac djnh nong do pham nhuom

Khi chieu mot dong sang qua dung dich thi dung dich do se hap thu chgn Ige mot so tia sang tuy theo mail sac ciia cac chat trong dung dich co nong do xac dinh Theo dinh luat Buger-Lamber-Beer ta e6:

A = \g^ = kb

A : Do hap thu quang cua dung dich

k : He so hap thu

b : Chieu day cuvet dung dung dich

He so Hap thu k con phu thugc vao nong do dung dich:

k=eC

e : He so khong phu thugc vao nong do

Do do ta eo:

A = \g^ = £bC

Trong gioi Han nhat dinh, do hap thu quang A phu thugc tuyen tinh vao nong do

C Dua vao do thi ta se tinh duge nong do eiia dung dich can phan tich khi bilt do hip

thu quang cua dung dich do Do hip thu quang ciia dung dich dugc do tren may quang pho UV-VIS - Lambda - Perkin Elmer 12

2.8 Xac dinh nhu cau oxy hoa hoa hQC COD

COD la ham lugng oxy can thiet de oxy Hoa Hoa hoc eac hgp chat Hiru co

CO trong nuac thanh CO2 va H2O Lugng oxy nay tuong ung voi Ham lugng chat huu

CO bi phan Huy

Gia tri COD duge xac dinh thong qua viee do mat do quang tren may do COD

Merck Nova 30

PHAN IH: T H V C N G H I E M , KET QUA VA THAO LUAN

3.1 Lam giau bentonit

aJTrao doi vai Na^:

Bentonit tho dugc ray lay co Hat <0.15mm roi dugc trao doi vai ion Na", thi nghiem nhu sau: can khoang set va NaHC03 vao eoc, them nuac eat roi khuay cho set phan tan deu trong nuac, giam toe do khuay va duy tri trong 12 gio Ty le NaHC03/bentonit la 3/100 theo khoi lugng Lge gan va nia khoang set tai pH trung tinh

b)Tdch bo hat tho:

Bentonit Di Linh-Lam Dong, ngoai thanh phan khoang chinh la monmorillonit con chua nhieu loai khoang khae Cac khoang vat di kem gom c6 caolinit, thach anh, fenspat, clorit, gatit Montmorillonit tap trung ehii yeu o co hat nho Hon 0,04 mm [6] Qua trinh tao set Hiru co chii yeu dua tren sir trao doi goe amin bac bon vai ion kim loai trong bentonit truang no Vi vay tach hat tho nham tach bo nhimg phan doan khong co Igi cho qua trinh bien tinh

Cho mot lugng xac dinh bentonit da trao doi ion Na" vao eoc thuy tinh, them nuoe cat vao cho dat ty le riong do 5% Khuay manh de dugc Hon hgp huyen phu dong nhat Ngimg khuay va cha cho Hon hgp on dinh (khong con chuyen dong khuay quan tinh) De lang 5 phiit, tach bo phan Hat lang Phan dung dich huyen phii tilp tuc dugc them nuoe den the tich ban dau va lap lai thao tac nhieu Ian Lge gan lay phan chit ran, phai kho roi nghien toi eo hat mong muon

Mot so dac tinh ciia bentonit truae va sau khi lam giau dugc trinh bay a bang 1

Bang 1: Do truomg no va dung lugng trao doi cation CEC ciia bentonit truae va sau

khi lam giau

Vat lieu

Bentonite chua lam giau

Bentonite da lam giau

Do truong na (ml/g) trong nuo-c

2.75 7.5

CEC (mg/lOOg)

51.0 70.0 TIT ket qua tren cho thay, bentonit sau khi lam giau eo do truang no va dung lugng trao doi cation (CEC) tang len dang ke

3.2 Che tao set hihi ca

3.2.1 Chi tao set hitu ca tit bentonit vd HDTMA (Hexadecyl trimetyl amoni

clorua)

Bentonit sau khi da lam giau dugc sii dung lam nguyen lieu che tao set hiru co Dua tren gia tri CEC da xac dinh tien hanh trao doi vai amin bac 4 theo ty le 100% gia tri trao doi cation ciia bentonit

- Liy mot lugng xac dinh vat lieu bentonit da lam giau cho vao nuac cat va

khuiy dku tren may khuiy tir Trong qua trinh khuay dong thai gia nhiet va on nhiet a

60-70*^0

- Chuin bi dung dich muoi amin trong etanol: can mot lugng xac dinh HDTMA, hoa tan vao etanol 96% roi chuyen vao pheu chiet Ty le HDTMA dem thu nghiem lin lugt tuong ung vai 75%; 100% va 125% dung lugng trao doi cation (CEC) ciia bentonit Khoi lugng HDTMA tinh theo cong thiic:

M=fCECMW.X

Trong do: /• la ti le trao doi so voi dung lugng trao doi cation

M: khoi lugng amin bac bon can diing (g)

CEC: dung lugng ^^o ^^i cation ciia bentonit (meq/g)

MW: khoi lugng moi amin bac bon -HDTMA (364.46 g/mol)

X: khoi lugng khoang set bentonit (g)

- Tien hanh phan ung.- Nho tir tir dung dich HDTMA tir pheu chiet vao Hon hgp huyen phii Dieu chinh toe do nho gigt sao cho chuyen het dung dich amin vao Hon hgp phan ung trong khoang thai gian la 1 gia Hon Hgp tiep tuc dugc khuay va giir

nhiet do a 60-70*^C trong 2 gio Ngimg cap nhiet va khuay Hon hgp phan ung trong 12

gia de phan ung xay ra Hoan toan

Lge, nia san pham bang nuoe nong cho toi khi loai bo hoan toan ion CI' (kiem tra bang dung dich AgN03) Cuoi eimg say kho va nghien mau den co hat 0.15mm So

do thi nghiem tong hgp set huu co trinh bay a hinh 9

Hinh 9 Sa do thiet bi phan ung tong hap set huu ca

Chu thich: 1- Pheu nho gigt; 2- Hon Hgp phan ung trong eoc thuy tinh chiu

nhiet; 3-Nhiet ke; 4-Bg khuay tir eo gia nhiet

3.2.2 Chi tao set hiru ca tir bentonit^ HDTMA vd TiOT (Tetra isopropyl ortho

titanat)

TiOT dugc sii dung trong qua trinh che tao vat lieu nham lam tang khoang each giira cac lap set Bo xung mot lugng dung dich TiOT hoa tan trong etanol 99% vao huyen phii bentonit-HDTMA, a nhiet do thap Hon 2^C, giir tai nhiet do nay trong vong mgt gio, sau do dua ve nhiet do pHong va khuay trong vong 8 gia Tien hanh lge hiit chan khong va say Wio den khoi lugng khong doi a nhiet do 70^C

3.3 Khao sat kha nang ung dung vat lieu hap phu set hihi ca de xu ly nude thai det nhu9m

.3.3.1 KItdo sat kha nang hap phu cda vat lieu thu duxrc tren mau nir&c pha tir pham nhuom

De khao sat kha nang hap phu cua vat lieu thu dugc chiing toi tien hanh khao sat kha nang Hap phu eiia vat lieu doi voi mau pha Loai pham nhugm dugc lira chgn la pham nhugm true tiep mau do; pham nhugm cation mau xanh va pham nhugm axit mau tim,

a) Khao sat thai gian dat can bang hap phu

De khao sat thai gian dat can bang hap phu, tien hanh cac qua trinh gian doan nhu sau: dua mot lugng xac dinh moi loai vat lieu vao dung dich chua 50ml pham nhugm co nong do CQ xac dinh, tien hanh khuay trgn tren may khuay tir Sau mot khoang thai gian xac dinh, lay mau thu dugc lge bo ba ran va xac dinh nong do pham nhugm con lai bang phuong phap trac quang

b) Xac dinh kha nang hdpphu cua vat lieu ban dau vd set hiru ca

Can m gam m6i loai vat lieu hap phu vao mot the tich xac dinh dung dich nuoe thai chua pham nhugm co nong do ban dau Cj, Khuay trong khoang thai gian ung voi thai gian dat can bang hap phu Tiep do lge bo phan ba ran, xac dinh nong do eon lai cua phim nhugm Tinh tai trgng hap phu va hoi quy theo eac mo hinh hap phu dang nhiet

3.3.2 Khao sat kha nang hdpphu cda vat lieu thu dirac trin mau nw&c thai lay tit thuc dia

Mau nuoe thai dugc lay tai dong thai ra tir be nhugm ciia cong ty Trach nhiem hiru Han thuomg mai det may Tin Thanh, thugc lang La Ca, xa Duang Noi, Ha Dong Tien hanh xii ly bang vat lieu hap phu che tao duge qua eac thi nghiem sau:

- Lay 100ml dung dich nuac thai chira pham nhugm khuay voi mot lugng xac dinh vat lieu hap phu trong 3 gia

- Lge bo phan chat ran roi xac dinh gia tri COD con lai va quan sat sir thay doi mau nuoe thai

3.4 Ket qua va thao luan

3.4.1 Kit qua nghiin ciru cau true cda vat lieu set hiru ca bentonit-HDTMA

Tir ket qua phan tich cau tnic vat lieu co the thay, bentonit ban dau eo thanh phan khoang chinh la montmorilonit co khoang each lop dooi dat gia tri 15,23A° Sau khi lam giau va xii ly vat lieu voi amin bac 4 khoang each lap dooi ciia vat lieu tang len dang ke, gia tri dooi ciia vat lieu set hiru co la 19,42A°

Ket qua chup pho Hong ngoai eiia bentonit va set hiru co cho thay: tren pho hong ngoai eiia set hiru co xuat hien eac dinh a 2851,3 cm"' va 2924,1 cm"' dac trung cho dao dong cua nhom -CH3 va -CH2-; trong khi do dao dong dac trung cho lien ket C-N ciia amin bac bon ciing dugc tim thay a dinh 1474,4 cm"' Cac ket qua nay hoan toan phii hgp voi ket qua phan tich cau tnic qua pho X-ray, dieu do khang dinh goc amin bac bon da duge dinh vi trong cau tnic cua bentonit

Ket qua phan tich nhiet cho thay ham lugng nuac trong bentonit ban dau va set huu CO chenh lech kha Ian Trong bentonit-Na ban dau la 6,74% thi ham lugng nuac trong set hiru co la rat nho 1,23%), va bi giai phong a vimg nhiet do thap hem lOO^C Dieu nay cho thay vat lieu set Hiru co eo tinh ki nuoe cao hem bentonit

Den khoang nhiet do tren 520^C thi ham lugng mau mat di a set hiru co la 17,78%), trong do co ca lugng am va lugng mat di do su phan hiiy cua phin hiru co Tir

do CO the tinh dugc lugng Hiiu ca trong set hiru co chiem khoang 16,55%

Do truang na trong Toluen

So lieu ve do truong no ciia bentonit va set hiru co trong Toluen dugc trinh bay

Ket qua tren cho thay vat lieu set hiru co co do truong no cao va phan tan tot

trong dung moi hiru co Dieu nay da chiing to bentonit tir dang khoang ua nuoe da duge chuyen Hoa thanh vat lieu co tinh ua hiiu ca Hon

3.3.2 Kit qua nghiin ciru cau true cda vat lieu set hiru ca bentonit-HDTMA-TiOT

Sau khi bien tinH Bentonit bang HDTMA, va TiOT do xop cua Bentonit bien tinh tang len rat nhieu so voi Bentonit chua bien tinh, dac biet la su xuat hien cua eac

16 mao quan c6 duang kinh Ian, dieu nay cho thay dien tich be mat rieng ciia Bentonit bien tinh ciing dugc duge tang len

Tir ket qua phan tich pho nhieu xa tia X cho thay khoang each eo ban eac lap set da tang tir 15,23A° len 37,00A° Khoang each nay tang len dang ke la co so cho viee tao mao quan eo duang kinh Ion

Tren pho hong ngoai xuat hien pie img voi buae song 1475,18 cm"' dae trung cho lien ket =C-N ciia amin bac bon Cac pic ling voi buae song 2926,71 cm"' va 2855,15 cm"' dac trung cho lien ket = CH2 va - CH3 Nhu vay co th^ khing dinh nhom amin bac bon da duge dinh vi tren be mat lap set

Pho phan tich nhiet cho thay lugng am ciia vat lieu khoang 2,5 % irng vai nhiet

do 97,90*^C Nhu vay tinh ky nuac cua vat lieu che tao dugc la rit cao

Tai pie 190'^C thay xuat Hien hieu ung toa nhiet do d6t chay chit hiru co da dinh

vi tren be mat cae lap set

C) 600^C vat lieu mat di khoang 23% khoi lugng, di^u nay do eac chit hiru co dinh vj tren be mat set bj dot chay hoan toan Tir day co the suy ra lugng amm hiru eo dinh vi tren be mat eac lop set la khoang 20,5%

3.3.3 Ket qua khao sat kha nang hap phu aim vat U$u thu dwp^c trin mau nir&cpha tit pham nhuom

3.3.3.1 Ket qua khao sat kha nang hdpphu cua vat lieu bentonit-Na vd vat lieu set hiru ca bentonit-HDTMA

D6 danh gia kha nang hap phu eiia timg loai vat lieu, tien Hanh hoi quy cac gia tri thuc n ^ e m theo cac phucmg trinh hap phu ding nhiet Langmuir va Freundlich, thu dugc cac gia tri dac trung nhu sau:

Bang 3: Kk qua khao sat kha nang hip phu ciia vat lieu bentonit-Na

R^

0,861 0,849 0,975 0,906 0,953

- >

Hoi qui theo mo hinh Freundlich

K 62,66 398,11 10,30 0,33 234,72

1/n 0,431 0,146 0,616 0,246 0,112

R^

0,823 0,718 0,985 0,852 0,827

Bang 4: Ket qua khao sat kha nang hap phu ciia vat lieu set hiJu co bentonit-HDTMA

R^

0,900 0,900 0,878 0,953

Hoi qui theo mo hinh Freundlich

K 47,23 0,74 106,30 62,12

1/n 0,399 0,822 0,138 0,230

R^

0.980 0.920 0.970 0.950

Tir ket qua xac dinh tai trgng hap phu cue dai theo mo hinh dang nhiet Langmuir co the nhan thay: bentonit sau khi xir ly voi amin bac bon co kha nang hap phu cao Hon nhieu so vai vat lieu ban dau Bentonit hau nhu khong hap phu dugc

pham nhugm true tiep, voi tai trgng hap phu cue dai xac dinh dugc chi la 1,28 mg/g, trong khi tai trgng hap phu doi vai set hiJU co la 224,55 mg/g

Bentonit va set hiru ca deu eo kha nang hap phu tot pham nhugm cation Kha nang hap phu cao nhat dugc xac dinh la qua trinh hap phu tren bentonit - Na vai tai trgng hap phu cue dai dat toi 1263,9mg/g D6i vai vat lieu set hiru co, tai trgng hap phu Cling dat duge la 626,84mg/l Nguyen nhan cua su khae nhau nay co the do sir khae nhau ve co che Hap phu len be mat vat lieu, trong khi hap phu len be mat bentonit chu yeu la hap phu trao doi thi hap phu tren be mat set hiru co chii yeu la hap phu vat

ly Vi vay, khi khoang each lap trong set HiJu co tang thi su hap phu ciing tang len Tir cac ket qua thuc nghiem tren mau pham nhugm axit mau tim, co the nhan thiy tai trgng hap phu cue dai eiia set hiru co co giam so voi bentonit - Na, dieu nay cho thiy viee gan ket goc hiJu co vao vat lieu nay khong lam tang hieu suat tach loai chit 6 nhiem Hay noi each khae, dii van eo kha nang hap phu pham nhugm tir nuoe thai, nhung loai vat lieu nay khong to ra c6 uu the noi trgi

Viee nghien cim che tao vat lieu hap phu set hiru co HDTMA - bentonite tren

CO so bentonit bien tinh da khae pHuc dugc nhuge diem ciia bentonite - Na trong viee img dung trong xir ly nuac thai nganh det nhugm (nang tai trgng hap phu doi voi pham nhugm true tilp tir l,28mg/l len 224,55mg/l), dieu nay co y nghia thuc tien Idn, gop phin Hoan thien He vat lieu Hap phu sir dung trong linh vue xii ly nuoe thai det nhugm

3.3.3.2 Ket qua khao sat kha nang hap phu cua vat lieu set hiru ca TiOT

bentonit-HDTMA-Bang 5 Ket qua khao sat voi pham xanh cation

Nong do trudc xir

Nong d9 sau xir Iy(nig/1) d pH 7.5

94,85 83,05 10,59 KPHD KPHD KPHD

Nong do sau \\x

ly(mg/l) d pH 9.5

95,91 84,72 83,66 0,51 0,43 0,27

Bang 6 Ket qua khao sat vai pham vang cation Nong dg trudc

282,29 214,85 190,21 11,60 4,16 1,55 KPHD

Nong d9 sau xir ly(mg/l) d pH 7.5

266,80 206,80 171,68 9,24 3,90 1,50 KPHD

Nong d9 sau xir ly(mg/l) d pH 9.5

279,00 207,78 162,41 9,87 4,24 1,68 KPHD Cac ket qua thu duge cho thay d dieu kien khao sat, set hiru co hap phu pham xanh cation d pH=7,5 tot Hon d moi truong kiem (pH=9,5) va axit (pH=4,4)

O pH=7,5, vai 50ml dung dich pham xanh cation c6 nong do dau khoang 800mg/l thi

chi can 0,lg set hiru ca la co the xu ly gan nhu hoan toan

Tuong tu , doi vdi dung dich pham vang cation ket qua thu duge ciing chi ra kha nang hap phu cua set hiru co che tao dugc doi vdi loai pham mau nay cung rat tot

va kha nang Hap phu d pH=7,5 ciing tot Hon d d moi truong kiem (pH=9,5) va axit (pH=4,4)

3.3.4 Khao sat kha nang hdpphu cua vat lieu thu dwactren mau nu&c thdi lay tit thuc dia

3.3.4.1 Ket qua khao sat kha nang hdpphu tren mau nuac thdi thuc te cua vat lieu bentonit-Na vd vat lieu set hiru ca bentonit-HDTMA

Mau nude thai lay tir cong thai chinh cua xudng san xuit thuge Cong ty trach nhiem hiru Han det may Tin Thanh, thugc lang La Ca, xa Duong Noi, Ha Dong Cac thong so dau vao nhu sau:

COD = 350,75 mg/1

pH = 7,73

Ket qua khao sat dugc trmh bay d bang 7

Bang 7 Ket qua khao sat kha nang hap phu tren mau nude thai thuc t6 ciia vat lieu

bentonit-Na va vat lieu set hiru co bentonit-HDTMA Khoi lugng vat

202.25 192.25 187.25 169.75 169.75 139.75

pH

8.23 8.27 8.25 8.26 8.29 8.29

Bentonit-HDTMA

COD eon lai (mg/1)

164.75 52.25 39.75 24.75 17.25 12.25

pH

8.23 8.28 8.26 8.30 8.28 8.29

Nhan xet: Tir eac ket qua tren co the thay, ca bentonit - Na va set hiru eo deu eo kha nang hap phu pham nhugm va lam giam COD cua nude thai det nhugm tren doi tugng mau nude nghien ciki Tuy nhien kha nang hap phu eiia set hiru co to ra hieu qua Hon nhieu d eimg dieu kien tien hanh thi nghiem Trong thi nghiem nay, vdi lugng set huu CO dua va la 0,15g da co the lam mat mau hoan toan nude thai va giam gia tri COD tdi 88,7% Neu tiep tuc tang ham lugng vat lieu hap phu thi sir giam gia tri COD khong dang ke

3.3.4.3 Ket qua khao sat kha nang hdpphu tren mau nuac thdi thuc te cua vat lieu set hiru ca bentonit-HDTMA-TiOT

Ket qua xii ly nude thai det nhugm lang nghe Duong Noi - Ha Dong - Ha Tay duge trinh bay d bang 8 va 9

Bang 8 Gia tri COD sau khi xii ly nude thai vdi vat lieu set hiru eo

COD sau khi xu ly

329,0 ' 301,5 204,0

Bang 9: Bang gia tri ciia COD sau khi xii ly nude thai vdi bentonit-HDTMA-TiOT d

cac gia tri pH khae nhau (lugng 0 Ig set hiiu co cho 50ml nude thai)

COD sau khi xir ly(mg/l)

391,5 204,0 286,5 Ket qua xu ly cho thay qua trinh xii ly dat hieu qua cao d pH khoang 7,5.Tai

pH nay lugng COD giam la kha Idn, khi sii dung 2g vat lieu set hiru co cho 1 lit nude thai thi tir gia tri COD ban diu 961,5 mg/1 da giam xudng con 204 mg/1, dat hieu qua xii ly tach loai COD la tren 78%) Dieu nay chimg to bentonit-HDTMA-TiOT dieu che

ducfc CO kha nang img dung tot vao thuc te

PHAN IV: KET LUAN

Qua qua trinh khao sat nghien euu va dua tren cac ket qua thi nghiem thu dugc

CO the nit ra mot so ket luan sau:

1 Che tao dugc vat lieu set huu co tir nguon nguyen lieu ban dau la bentonit Di Linh- Lam Dong, thong qua qua trinh bien tinh vdi HDTMA va TiOT

2 Da tien hanh khao sat mot so thong so cau tnic ciia set hiru eo, so sanh vdi bentonit thu dugc eac ket qua sau:

- Khoang each co ban giira hai lap phien set tang len tir gia tri khoang each Idp ban dau la 15,23 A° len tdi 19,42 A°, trong truong hgp bien tinh vdi TiOT khoang each giira cac lap tang len den 37,00 A°

- Xuat hien eac nhom ehire amin bac 4 tren vat lieu set hiru ca

- Tinh ua hiru co ciia vat lieu the hien ro ret vdi kha nang truang nd cao trong dung moi hiru co toluen

- Ham lugng chat hiru eo trong set huu co HDTMA- bentonite chiem 16,5% khoi lugng, eon trong set huu co bentonit-HDTMA-TiOT ham lugng chat hiiu co chiem khoang 20,5%> khoi lugng set

3 Da khao sat kha nang hap phu pham nhugm ciia vat lieu set hiru eo, thu dugc cac ket qua sau:

Cac vat lieu che tao duge ed kha nang hap phu kha tot eac loai pham nhugm khae nhau

Bentonite - Na eo kha nang hap phu tot cac loai pham nhugm nhu xanh cation (855.5mg/l), vang cation (1263.9), do phan tan (581,5mg/l), tim axit (448,18mg/l) Vat lieu set hiru co bentonite - HDTMA ciing ed kha nang xir ly tot cac loai pham nhugm cation, pham nhugm phan tan va pham nhugm axit Dae biet, vdi viee gan them goe amin bac bon da lam tang ro ret kha nang xii ly doi vdi loai pham nhugm true tiep (lam tang tai trgng Hap phu tir l,28mg/l len 224,55mg/l)

Doi vdi vat lieu set hiru co bentonit-HDTMA-TiOT, ket qua khao sat ciing cho thay kha nang tach loai pham mau cua loai vat lieu nay la rat tot, dac biet la doi vdi cae loai pham nhugm cation

4 Ket qua khao sat kha nang xu ly ciia set hiru co doi vdi mau nude thai thuc te lang nghe det nhugm Duong Noi cho thay, set hiru ca cd kha nang xii ly rat tot mau ciia nude thai, dong thdi gia tri COD giam tir 350mg/l xudng 52mg/l doi vdi vat lieu set htm CO bentonite - HDTMA , giam tir 961,5 mg/1 xudng eon 301,5mg/l doi vdi vat lieu set hiiu eo bentonit-HDTMA-TiOT

TAI LIEU THAM KHAO

TAI LIEU THAM KHAO TIENG VIET

[I] Cao Anh Diing, Tran Xuan Phuong, Le Anh Dao, Hoang Linh, Than Hoang

Cudng, Le Minh Son (2004) Mot so ket qua nghien cuu tong hap set hiru ca tir

set Binh Thugn de sir dung cho nganh ddu khi, Tuyen tap bao cao Hgi nghi khoa

hgc cong nghe "30 nam dau khi Viet Nam: eo hgi mdi, thach thiie mdi", NXB Khoa hgc Ky thuat, Tr 87 - 97

[2] Dang Tuyet Phuong (1995), Nghien cuu cdu true, tinh chat hoa ly vd mot so img

dung cua bentonit Thugn Hai a Viet Nam, Luan an PTS Khoa Hgc, Vien Hoa Hgc

[3] Cao Anh Diing, Tran Xuan Phuong, Nguyen Lan Huang, Le Minh Som, Le Anh Dao, Hoang Linh, Than Hoang Cudng, Pham Le Minh, Biii Le Phuong (2005),

Nghien cuu cong nghe san xuat set hihi ca Bao cao tong ket khoa hgc va ky

thuat nganh dau khi

[4] Tran Van Nhan, Nguyen Thac Sim, Nguyen Van Tue (1997) Hoa ly, II.NXB

Giao Due

[5] Dinh Quang Nang (2003) Vat Ueu lam khuon cat NXB Khoa hgc Ky thuat

[6] Cao Hiru Trugng, Heang Thi Linh (2002) Hoa hgc thuoc nhuom NXB Khoa

hoc Ky thuat,

[7] Duong Thi Hanh (2007) Nghien cuu che tao set hiru ca tren ca sd bentonit va ung dung de xir ly cac chat hihi ca dgc hai trong nude thai Luan van Thac si

Khoa hgc, Truong Dai Hgc Khoa hgc Tu nhien, Dai hgc Qudc gia Ha Noi

TAI LIEU THAM KHAO TIENG ANH

[8] Jaynes, W.F and Vance, G.F (1996).BTEX Sorption by Organo-clays: Cosorptive Enhancement and Equivalence of Interlayer Complexes Soil

Science American Journal, vol 60, no 6, pp 1742-1749

[9] Ludmila Groisman, Chaim Rav-Acha, Zev Gerstl, and Uri Mingelgrin.(2004)

Sorption and Detoxification of Toxic Compounds by a Bifunctional Organoclay Journal of Enviromnental Quality 33:1930-1936

[10] Gary W Beall (2003), The use of organo-clay in water treatment Journal of

applied clay science, Vol 24, pp 11-20

[II] Gulten Ak^ay, Mehmet Ak9ay, Kadir Yurdako? (2006) The characterization of prepared organomontmorillonite (DEDMAM) and sorption of

henoxyalkanoic acid herbicides from aqueous solution Journal of Colloid and

Interface Science, 296, pp,428^33

[12] M.M.G Ramos Vianna, J H, R, Franco, CA Pinto, F.R Valenzuela Diaz and

P.m Biichler (2004) Sorption of oil pollution by organoclays and a coal/mineral complex, Brazil joumal of chemical engineering Vol.21(02), pp

282(2), pp 314-319

01 LUAN VAN THAC SY

• •

THLTC HIEN TRONG KHUON KHO D^ TAI

DAI HOC QUOC GIA HA NQI

TRUING DAI HOC KHOA HOC TlT NHIEN

Duong Thj Hanh

NGHIEN CUU CHE TAG SET HtJtJ CO TREN CO SO BENTONIT

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Chuyen nganh: Hoa moi truong

Ma so: 62.44.41.01

LUAN VAN THAC SI KHOA HOC

NGUCil HUdNG DAN KHOA HOC: PGS.TS NGUYEN VAN NOI

DAI HOC QUOC GIA HA NOI

KHOA HOA HOC

Dirofng Thi Ngoc Lan

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DUONG NOI, H A DONG, HA TAY

KHOA LUAN TOT NGHIEP HE DAI HOC CHINH QUY

Nganh: Cong nghe Hoa hoc

Giao vien huong dan: PGS TS Nguyen Van Noi

HANOI -2008

DAI HOC QUOC GIA HA NOI TRl/dNG DAI HOG KHOA HOC TlT NHIEN

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Nguyen Minh Due

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LANG NGHE DU^ONG NOI, HA DONG, HA TAY

KHOA LUAN TOT NGHIEP HE DAI HOC CHINH QUY

NGANH: HOA MOI TRUONG

Giao vien hir&ng dan: PGS TS Nguyen Van Noi

HVCH Nguyen Thj Hanh

BO GIAO DUC VA DAO TAO TRUCING DAI HOC DAN LAP HAI PHONG

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6 LANG NGHE DET NHUOM DlTONG NOI

KHOA LUAN TOT NGHIEP DAI HOC HE CHINH QUY

NGANH: KY THUAT MOI T R U I N G

Sinh vien : Nguyin Thi Hong Ngucd huong din: PGS.TS Nguyen Van Noi

CAC BA! BAO, BAO CAO KHOA HOC CONG B O

Proceedings to' The 3'^'' International Symposium on Advanced

Materials in Asia-Pacific Rim

(The 3'^^ ISAMAP)

May 11 - 13, 2006 Ulsan Hyundai Hotel, Ulsan, Korea

Program

Plenary Lecture : 40 minutes including discussion

Invited Lecture : 30 minutes including discussion

O ra l Lecture : 20 minutes including discussion

Prof Chang-Sik I la (Pusan National University Korea)

Chair: Prof Chang-Sik Ha (Pusan National L'iiiversii> Korea)

PL 1 : Frank Caruso (University of Melbourne Australia) Polymer Nanotcchnology ; Nanostructured Polymer \1jleri;ils

; PL 2 : Kil-Yeong Choi (Korea Research histilute of Chemical Tcclinolog\ Korc

! R & D and Industrial Status of Advanced Polymers in Koreii

1 0 : 4 0 - 1 1 : 0 0 ! Coffee Break

Chair: Prof Wonho Kim (Pusan National University Korea)

1 1 : 0 0 - 1 1 : 3 0 IL I : Yusuke Kawakami (Japan Advanced Institute of Science and Technology

Synthesis and Functional Design of Siloxane-Containing Compounds