载铁(β-FeOOH)球形棉纤维素吸附剂去除地下水砷(Ⅲ)的研究

高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (7): 1258.

载铁(β-FeOOH)球形棉纤维素吸附剂去除地下水砷(Ⅲ)的研究

郭学军, 陈甫华

南开大学环境科学与工程学院, 天津300071

收稿日期:2004-07-30 出版日期:2005-07-10 发布日期:2005-07-10
通讯作者: 陈甫华(1936年出生),男,教授,博士生导师,从事水污染防治和控制研究.E-mail:chenfuhua2003@yahoo.com E-mail:chenfuhua2003@yahoo.com
基金资助:
南开大学-天津大学联合研究项目;废水和微污染水处理创新技术研究基金资助

Elimination of As(Ⅲ) from Groundwater by Bead Cellulose Adsorbent Loaded with Fe(β-FeOOH)

GUO Xue-Jun, CHEN Fu-Hua

College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China

Received:2004-07-30 Online:2005-07-10 Published:2005-07-10

摘要/Abstract

摘要： 制备了一种载铁(β-FeOOH)球形棉纤维素吸附剂,并用于地下水中As(Ⅲ)的去除.吸附剂对As(Ⅴ)和As(Ⅲ)在吸附容量、选择性和速率等方面都具有良好的性能,无需预氧化As(Ⅲ),其适用pH范围宽,不必调节原水的pH.吸附剂孔隙度大,机械强度好,活性成分铁的载入量高,吸附As(Ⅲ)的活性好.Langmuir和Freundlich方程能较好地描述吸附平衡方程,其吸附动力学符合Lagergren准二级方程.吸附As(Ⅲ)的最佳pH范围为6-9.SO₄^2-和Cl^-等干扰离子均不影响As(Ⅲ)的去除.柱吸附实验表明,即使在较高流速和As(Ⅲ)进水浓度下,吸附剂对As(Ⅲ)的去除依然具有很高的穿透容量和饱和容量.吸附剂可以用NaOH溶液再生,洗脱和再生效率较高.活性成分β-FeOOH形态稳定,柱实验和再生时铁均无泄漏.

关键词: 载铁(&beta, -FeOOH)球形棉纤维素, 吸附剂, 砷(Ⅲ), 吸附, 去除

Abstract: A new adsorbent, bead cellulose loaded with Fe hydroxide(β-FeOOH) was prepared and applied to the removal of arsenite from groundwater. The adsorbent has perfect properties in As(Ⅴ) and As(Ⅲ) adsorption capacity, selectivity and kinetics. There is no need of pH adjusting and preoxidation during the arsenite removal. The adsorbent is porous and has excellent mechanical properties. The adsorbent has a high content of Fe, which is the reactive center with a high reactivity for sorption of arsenite. The sorption kinetic data can be described by the Lagergren pseudo-second order rate equation. Arsenate elimination was favored at pH=6-9. The addition of chloride, sulfate did not affected the arsenite removal efficiency. The column experiment indicated that the breakthrough and saturation capacity were large with high velocity flow and influent arsenite concentration. The adsorbent can be generated with NaOH solutions, and the desorption and regeneration process were effective. The β-FeOOH loaded in the bead cellulose was chemically stable during the column experiment and regeneration.

Key words: Bead cellulose loaded with Fe hydroxide, Adsorbent, Arsenite, Adsorption, Removal

中图分类号:

X523

TrendMD:

郭学军, 陈甫华. 载铁(β-FeOOH)球形棉纤维素吸附剂去除地下水砷(Ⅲ)的研究. 高等学校化学学报, 2005, 26(7): 1258.

GUO Xue-Jun, CHEN Fu-Hua . Elimination of As(Ⅲ) from Groundwater by Bead Cellulose Adsorbent Loaded with Fe(β-FeOOH). Chem. J. Chinese Universities, 2005, 26(7): 1258.

参考文献

[1] Nick son R.,McArthu r J.,Bu rgess W.et al..Natu re[J],1998,395:338 [2] W HO Gu idelines fo r Drink ing2w ater Quality,Vo l 1:Recomm endation s(2nd ed).[M],Geneva:W HO,1993 [3] EPA Repo rt on the Exp ert Panel on Arsen ic Carcinogen icity:Review and Wo rk shop[M],Wash ing ton DC:U S Environm en talPro tection Agency,1997 [4] Schnoo r J.L..Environm en tal Modeling,Fate and Tran spo rt of Po llu tan ts in Water,Air.and So il[M],New Yo rk:John Wiley&Son s,1996 [5] Bonn in D.,Tam p a F..U S 006 042 731A[P],2000 [6] Mann ing B.A.,Go ldberg S..Environm en tal Science and Techno logy[J],1997,31:2005—2011 [7] Farquhar M.L.,Charnock J.M.,Liven s F.R.et al..Environm en tal Science and Techno logy[J],2002,36:1757—1762 [8] Fendo rf S.,Eick M.J.,Gro ssl P.et al..Environm en tal Science and Techno logy[J],1997,31:315—320 [9] DeMarco M.J.,SenGup ta A.K..Water Research[J],2003,37:164—176 [10] Matsunaga H.,Yokoyam a T.,Eld ridge R.J.et al..Reactive&Functional Po lym ers[J],1996,29:167—174 [11] Katsoyiann is I.A.,Zoubou lis A.I..Water Research[J],2002,36:5141—5155 [12] Ben jam in M.M.,Sletten R.S.,Bailey R.P.et al..Water Research[J],1996,30:175—182 [13] Lo S.L.,Jeng T.H.,Ch in L.H..Water Science and Techno logy[J],1997,35:63—70 [14] SEPA C(国家环境保护总局).Method of Detection and Analysis from Water and Wastew ater,the 4th Ed ition(水和废水监测分析方法,第4版)[M],Beijing:China Environmental Science Press,2002:308—311 [15] Singh T.S.,Pan t K.K..Sep aration and Pu rification Techno logy[J],2004,36:139—147 [16] Roberts L.C.,Hug S.J.,Ruettim ann T.et al..Environm en tal Science and Techono logy[OL],p ub lished on w eb.,2004 [17] Jo sh i A.,Chaudhu riM..Jou rnal of Environm en tal Eng ineering[J],1996:769—771