Nghiên cứu khả năng hấp phụ của vật liệu FK đối với ASEN

TRtTONG DAI HOC AN GIANG KHOA KY THUAT - CONG NGH^ - MOITRUONG NGUYEN VAN CAM nghien cutj kha nang hap phu cua vAt lieu fk d6i v6i asen TRUC3NG DAI HQC AN GIANG THtfVIEN KHOA LUAN TOT NGHIEP GVHD: TS NGUYEN TRUNG THANH An Giang, 05/2013 L01 CAM CWV Qua bon nam hoc tap tren giang dubng trubng Dai Hoc An Giang, em da nhan dugc su chi day va giiip da nhiet tinh ciia quy thay co khoa Ky Thuat Cong Nghe Moi Trubng Quy thay co da tan tinh truyen dat nhung kien thuc va kinh nghiem vo cung quy bau, la nen tang vung chac giiip em co the hoan tot cong viec hoc tap dac biet la khoa luan tot nghiep Em xin chan cam an Ban Giam Hieu Trubng Dai Hoc An Giang, quy thiy co khoa Ky Thuat Cong Nghe Moi Trubng, Ban Quan ly Khu thi nghiem da tao dilu kien cho em thuc tap, nghien cuu va tilp xiic thuc tl dl em dugc hgc hoi nhung kinh nghigm rat quy bau Em xin bay to long bilt an sau sic din Thly TS Nguyln Trung Thanh Thiy da tan tinh giiip da, chi din va dong gop nhung y kiln quy bau suit thai gian nghien cuu thuc hien de tai tu giiip em hoan tit khoa luan tit nghiep Em xin cam an Thiy Phan Phudc Toan, Co Nguyen Hbrig Nhat da tan tinh giiip da em suot qua trinh thuc hien thi nghiem giiip em co thi hoan tit cong viec cua minh Day la Ian dau tien em co ca hoi tiep can cong viec nghien cuu khoa hoc nhung khoang thai gian ngln va vln kiln thuc han chi nen khoa luan tit nghiep ciia em khong the khong tranh khoi nhung sai sot, em xin ghi nhan nhung nhan xet, dbng gop y kien cua quy thay co de de tai ciia em dugc hoan thien vai chat lugng tit han Mot Ian nua em xin chan cam an! Long Xuyen, 17 (hang 05 nam 2013 Sinh vien thuc hien Nguyen Van Cam NHAN XET CUA GIANG VIEN HirdNG DAN Long Xuyen, 17 thdng 05 nam 2013 TS Nguyen Trung Thanh NHAN XET CUA GIANG VIEN PHAN BIEN Long Xuyen, 17 thing 05 ndm 2013 Giang vien phan bien Ths Nguyen Thanh Hung NHAN XET CUA GIANG VIEN PHAN BIEN Long Xuyen, ngdy 17 thdng 05-ndm 2013 Giang vien phan bien Ths H6 Thi Thanh Tam LOfI Md DAU Hien fr mot so vung nong thon Viet Nam phan Ion sii dung nguon nude ngam lam nguon nude chinh phuc vu cho sinh hoat va an uong nhung chua dupe xu ly hoac chi xil ly bang cac phuang phap thu cong nhu de lang, lpc, nen van de nhiem kim loai nang, dac biet la Asen nude ngam la rat cao Do do, viec nghien ciiu tach Asen cung nhu cac kim loai nang khac khoi ngam nude ngam bi nhiem la van de quan trpng nham bao ve sue khoe cpng dong va thu hut su quan tarn cua nhiSu nha khoa hoe Da cd nhieu phucmg phap dupe su dung de xii ly Asen nude ngam, phucmg phap hap phu dupe su dung rang rai hon vi co nhung uu diem nhu sau: tong hpp vat lieu don gian re tien, thai gian xu ly nhanh va cd the tai su dung vat lieu hap phu Trong phuang phap hap phu thi cac vat lieu bien tinh tu cac phe pham nong nghiep nhu tro trau, sa dira, vd lac, ba mia,., dupe nghien cuu rat nhieu va dupe danh gia la vat lieu hap phu cd nhieu trien vpng Trong de tai "Nghien cuu kha nang hap phu cua vat lieu FK doi v&i Asen" chung toi chu yeu tap trung nghien cuu kha nang hap phu ciia tro trau tir cac Id dot gach (tro trau se duac hoat hoa bang H2SO4) va gan hop chat hoat dpng be mat (cd hoat tinh rieng doi v&i Asen) bang phuang phap tam va nung lam vat lieu hap phu Asen cd nude ngam TOM TAT Van de nhiem Asen nude ngam va nhung anh hudng cua Asen doi vdri sue khoe nguai dang la van d ndng bong va dang quan tam cua nMSu quoc gia KM tham nhap vao ca the Asen co the gay hang loat tac dpng xau den siic khoe nguai du chi a mpt luang rat thap Trong nghien cuu nay, vat lieu FK dupe tong hap tren nen chat mang la tro trSu (da hoat hoa bang axit H2SO4 10%, thai gian hoat hoa la 30 phut) se duac gan cac chat hoat dpng be mat (co hoat tinh rieng doi vai Asen) bang phuang phap tam va nung Cac yeu to nhu: che dp hoat hoa tro trdu, kh6i lupng vat lieu FK, ham luang chSt hoat dpng b mat, va pH ciia nuac ngam la cac yeu to chinh anh huang den qua trinh hap phu Asen ciia vat lieu FK Qua cac dieu Men thi nghiem khac nhau, chiing toi nhan thay rang 5mg vat lieu FK co kha nang hap phu gan nhu hoan toan ham luang Asen 50ml nude ngam (0,009 mg/1) d pH ~ 7.0 vdi thai gian hap phu la 15 phut Qua xac dinh dupe tai lupng hap phu Asen ciia vat lieu FK la 0,09 (mg/g) Qua ket qua nghien ciiu ciia de tai cho thay ldra nang hap phu ciia vat lieu FK doi vdi Asen co hieu qua cao VI vay co the nghien ciiu, ling dung rpng rai vat lieu FK vao thuc te xu ly Asen nude ngam Men la rat can thiSt ABSTRACT The issue of groundwater contamination from arsenic has been concerned from many countries on the world The reason is the arsenic will poison human even the small amounts of the arsenic In this study, the impregnation and calcination methods were used to synthesize FK/rice husk ash materials The factors could effect to Arsenic adsorption for our materials, for example: the way activated the rice husk ash material, mount of adsorbent and FK percent on the support, pH value, The experimental condition optimum is mg FK/rice husk ash material capable of almost completely adsorbed arsenic concentrations in groundwater 50ml (0.009 mg/1) at pH ~ 7.0 with adsorption time is 15 minutes Thereby determine the load of material adsorbed As FK is 0,09 (mg/g) The results showed that the arsenic adsorption capacity of our material with 10 % FK (in the weigth) is very high So we think that our material can apply our material into the real system to treat the arsenic contamination from the groundwater KHOA LUANTOTNGHIEPGVHD: TS NGUYENTRUNG THANH muc Lye LOICAMON NH^N XET CUA GIANG VIEN HUONG DAN LOflMCJBAU TOM TAT MUC LUCi DANH SACH BANGiv DANHSACHHINHv DANH MUC CACTU" VIET TATvi Chuong 1: GICH THIEU1 Chuwng 2: LUOC KHAO TAI LIEU2 2.1 T6ng quan vIMp phu'.2 2.1.1.Hap phu2 2.1.2.Ban chat Men tuanghapphu2 2.1.3.Phdn loai cdc qua trinh hap phu3 2.1.4.Cache hap phu 2.1.5.Dong hoc qua trinh hap phu5 • 2.2 Tong quan ve nudcngam5 2.2.1.Hien trqng sit dung nuac ngam5 2.2.2.Vaitrd cua nuac ngam doi vai dai song6 2.2.3.Thdnhphdn vd dqc diem cua nuac ngam-6 2.2.4.Nguon goc vd nguyen nhan gay nhiem nuac ngam7 2.3 T6ng quan v6 Asen (thach tin)'.7 2.3.1.Asen7 2.3.2.Tinh chat cua Asen8 2.3.3.Nguon goc vdsuphdn bo Asen trongmoi truang8 2.3.4.Nguon goc nhiem Asen8 2.3.5.Hien trqng nguon nuac hi nhiem Asen10 SVTH: Nguyin Van Cam-DHIOMTi MSSV: DMT092098 KHOA LUAN TOTNGHIEPGVHD: TS NGUYEN TRUNG THANH 2.4.Trieu chumg nhiem doc Asen 12 2.4.1.Co che gay doc cua Asen 12 2.4.2.Nhiem doc cap tinh 13 2.4.3.Nhiem doc man tinh14 2.5.Mot so phircmg phap xit ly Asen15 2.5.1.Phuongphap keo tu - ket tua15 2.5.2.Phwongphdp oxy hoa16 2.5.3.Phuongphdp trao doi ion17 2.5.4.Phuongphdp loc17 2.6.Phuong phap hap phu xil ly Asen 19 2.7.Mot s6 nghien cum v vat lieu hip phu Asen21 2.8.T6ng quan v tro trlu23 2.8.1.Trotrdu23 2.5.2.Thanhphdn hoa hoc cua tro trdu23 2.8.3.Mot s