GAC的定向改性及其水体除氟应用研究
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- 论文作者：汤丁丁 ; 史德亮 ; 李伟 ; 李亚龙 ; 姚付启
- 年：2017
- 作者机构：长江科学院农业水利研究所;
- 论文关键词：除氟 ; GAC ; 吸附 ; 四价钛
- 会议召开时间：2017-07-27
- 会议录名称：2017中国水资源高效利用与节水技术论坛论文集
- 语种：中文
- 分类号：TU991.2
- 学会代码：BWTS
- 会议名称：2017中国水资源高效利用与节水技术论坛
- 会议地点：中国黑龙江哈尔滨
- 主办单位：河海大学、中国水利经济研究会、黑龙江省水利科学研究院
- 学会名称：北京沃特咨询有限公司
- 页数：8
- 文件大小：1645k
- 原文格式：D
- 会议级别：全国
摘要
本研究采用对氟离子有特殊作用的四价钛改性颗粒活性炭(GAC),并考察改性前后GAC的水体除氟性能。通过批试验确定四价钛改性GAC对氟离子的吸附平衡、动力学和机理。实验结果表明该吸附过程符合Langmuir吸附等温线和拟二级动力学模型。初始氟离子浓度的提高和接触时间的延长可以提升吸附性能,而p H和温度的升高会抑制吸附性能。氟离子和羟基基团之间的离子交换作用是主要的吸附机理。批试验结果证明四价钛改性GAC对氟离子就有优异的去除效果,能将水体水氟离子浓度降至饮用水标准限之下(<1.0 mg/L)。四价钛改性GAC具有良好的再生性能和工艺适应性,能处理同时含有氟离子和有机物污染的混合水体。
引文
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[2]ANSARI M,KAZEMIPOUR M,DEHGHANI M,et al.The defluoridation of drinking water using multi-walled carbon nanotubes[J].Journal of Fluorine Chemistry,2011,132(8):516-20.
[3]JAGTAP S,YENKIE M K,LABHSETWAR N,et al.Fluoride in drinking water and defluoridation of water[J].Chemical Reviews,2012,112(4):2454-66.
[4]ZHANG G,HE Z,XU W.A low-cost and high efficient zirconium-modified-Na-attapulgite adsorbent for fluoride removal from aqueous solutions[J].Chemical Engineering Journal,2012,183(315-24.
[5]PATRICK R,FORD E,QUARLES JR J.Groundwater contamination in the United States[M].Univ of Pennsylvania Press,1987.
[6]WANG W,LI R,TAN J A,et al.Adsorption and leaching of fluoride in soils of China[J].Fluoride,2002,35(2):122-9.
[7]AGARWAL M,RAI K,SHRIVASTAV R,et al.Deflouridation of water using amended clay[J].Journal of Cleaner Production,2003,11(4):439-44.
[8]AZBAR N,TRKMAN A.Defluoridation in drinking waters[J].Water Science&Technology,2000,42(1-2):403-7.
[9]ARORA M,MAHESHWARI R,JAIN S,et al.Use of membrane technology for potable water production[J].Desalination,2004,170(2):105-12.
[10]LHASSANI A,RUMEAU M,BENJELLOUN D,et al.Selective demineralization of water by nanofiltration application to the defluorination of brackish water[J].Water Research,2001,35(13):3260-4.
[11]LI Y,ZHANG P,DU Q,et al.Adsorption of fluoride from aqueous solution by graphene[J].Journal of Colloid and Interface Science,2011,363(1):348-54.
[12]BHATNAGAR A,KUMAR E,SILLANP M.Fluoride removal from water by adsorption—a review[J].Chemical Engineering Journal,2011,171(3):811-40.
[13]NDIAYE P,MOULIN P,DOMINGUEZ L,et al.Removal of fluoride from electronic industrial effluentby RO membrane separation[J].Desalination,2005,173(1):25-32.
[14]SHEN F,CHEN X,GAO P,et al.Electrochemical removal of fluoride ions from industrial wastewater[J].Chemical Engineering Science,2003,58(3):987-93.
[15]CHANG M,LIU J.Precipitation removal of fluoride from semiconductor wastewater[J].Journal of Environmental Engineering,2007,133(4):419-25.
[16]CHAUHAN V S,DWIVEDI P K,IYENGAR L.Investigations on activated alumina based domestic defluoridation units[J].Journal of Hazardous Materials,2007,139(1):103-7.
[17]M RQUEZ-MENDOZA S,JIM NEZ-REYES M,SOLACHE-R OS M,et al.Fluoride removal from aqueous solutions by a carbonaceous material from pyrolysis of sewage sludge[J].Water,Air,&Soil Pollution,2012,223(5):1959-71.
[18]ONYANGO M S,KOJIMA Y,AOYI O,et al.Adsorption equilibrium modeling and solution chemistry dependence of fluoride removal from water by trivalent-cation-exchanged zeolite F-9[J].Journal of Colloid and Interface Science,2004,279(2):341-50.
[19]KARTHIKEYAN M,KUMAR K,ELANGO K.Batch sorption studies on the removal of fluoride ions from water using eco-friendly conducting polymer/bio-polymer composites[J].Desalination,2011,267(1):49-56.
[20]MEENAKSHI S,VISWANATHAN N.Identification of selective ion-exchange resin for fluoride sorption[J].Journal of Colloid and Interface Science,2007,308(2):438-50.
[21]YANGM M,HASHIMOTO T,HOSHI N,et al.Fluoride removal in a fixed bed packed with granular calcite[J].Water Research,1999,33(16):3395-402.
[22]MEENAKSHI S,SUNDARAM C S,SUKUMAR R.Enhanced fluoride sorption by mechanochemically activated kaolinites[J].Journal of Hazardous Materials,2008,153(1):164-72.
[23]LV L,HE J,WEI M,et al.Treatment of high fluoride concentration water by Mg Al-CO3layered double hydroxides:Kinetic and equilibrium studies[J].Water Research,2007,41(7):1534-42.
[24]MALIYEKKAL S M,SHARMA A K,PHILIP L.Manganese-oxide-coated alumina:a promising sorbent for defluoridation of water[J].Water Research,2006,40(19):3497-506.
[25]TRIPATHY S S,RAICHUR A M.Abatement of fluoride from water using manganese dioxide-coated activated alumina[J].Journal of Hazardous Materials,2008,153(3):1043-51.
[26]LARSEN M,PEARCE E.Defluoridation of drinking water by boiling with brushite and calcite[J].Caries research,2002,36(5):341-6.
[27]GUPTA V K,ALI I,SAINI V K.Defluoridation of wastewaters using waste carbon slurry[J].Water Research,2007,41(15):3307-16.