全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

二氧化钛颗粒制备及其对水中三价砷的去除

Keywords: 锐钛矿,TiO2颗粒,,动力学,等温线

Full-Text   Cite this paper   Add to My Lib

Abstract:

以硫酸氧钛和聚乙烯醇(PVA)为原料,通过冰水浴法制备了二氧化钛(TiO2)颗粒,并研究了其对砷的吸附性能。利用X射线衍射仪(XRD)和扫描电子显微镜(SEM)对TiO2颗粒进行了表征,结果表明,吸附剂为锐钛矿结构,比表面积246m2/g。TiO2颗粒对模拟地下水中砷(Ⅲ)的吸附动力学研究表明,吸附过程符合准二级动力学。采用Langmuir和Freundlich方程对吸附平衡数据进行了拟合,结果表明,吸附等温线符合Langmuir模型,最大吸附量为22.3mg/g。TiO2颗粒对三价砷的吸附在pH为9.1时吸附量最大,吸附受CO32-影响较大。将110gTiO2颗粒装备成过滤滤壶,对山西地下水(总砷含量190μg/L)进行了除砷实验,经过3600柱体积后,滤液中砷浓度低于10μg/L,符合国家饮用水标准。

References

[1]  Smedley P. L., Kinniburgh D. G. A review of the source, behaviour and distribution of arsenic in natural waters. Applied Geochemistry, 2002,17(5):517-568
[2]  Kirk Nordstrom D. Worldwide occurrences of arsenic in ground water. Science, 2002,296(5576):2143-2145
[3]  王焰新,苏春利,谢先军,等. 大同盆地地下水砷异常及其成因研究. 中国地质, 2010,37(3):771-780 Wang Yanxin,Su Chunli, Xie Xianjun, et al. The genesis of high arsenic groundwater: A case study in Datong basin. Geology of China, 2010,37(3):771-780(in Chinese)
[4]  Zhang Hui, Ma Dongsheng, Hu Xiongxi. Arsenic pollution in groundwater from Hetao Area, China. Environmental Geology, 2002,41(6):638-643
[5]  朱玉龙,郑玉建,陈晓霞,等. 新疆奎屯地砷病区与非病区水中砷及金属元素含量的分布. 新疆医科大学学报, 2009,32(3):247-248 Zhu Yulong, Zheng Yujian, Chen Xiaoxia, et al. Characteristics of mineral element concentrations in the drinking waters of regions with and without endemic arsenism disease in Quitun, Xinjiang. Journal of Xinjiang Medical University, 2009,32(3):247-248(in Chinese)
[6]  Smedley P. L., Zhang M., Zhang G., et al. Mobilisation of arsenic and other trace elements in fluviolacustrine aquifers of the Huhhot Basin, Inner Mongolia. Applied Geochemistry, 2003,18(9):1453-1477
[7]  金银龙, 梁超轲, 何公理, 等. 中国地方性 砷中毒分布调查(总报告). 卫生研究, 2003,32(6):519-540 Jin Yinlong, Liang Chaoke, He Gongli, et al. Study on distribution of endemic arsenism in China. Journal of Hygiene Research, 2003,32(6):519-540(in Chinese)
[8]  Michael F. Hughes. Arsenic toxicity and potential mechanisms of action. Toxicology Letters, 2002,133(1):1-16
[9]  Dinesh Mohan, Charles U. Pittman Jr. Arsenic removal from water/wastewater using adsorbents—A critical review. Journal of Hazardous Materials, 2007,142(1-2):1-53
[10]  Yuan Tao, Hu Jiangyong, Ong Say Leong, et al. Arsenic removal from household drinking water by adsorption. Journal of Environmental Science and Health, Part A-Toxic/Hazardous Substance & Environmental Engineering, 2002,37(9):1721-1736
[11]  Streat M., Hellgardt K., Newton N. L. R. Hydrous ferric oxide as an adsorbent in water treatment-Part 3: Batch and mini-column adsorption of arsenic, phosphorus, fluorine and cadmium ions. Process Safety and Environmental Protection, 2008,86(B1):21-30
[12]  Gu Zhimang, Fang Jun, Deng Baolin. Preparation and evaluation of GAC-based iron-containing adsorbents for arsenic removal. Environmental Science & Technology, 2005,39(10):3833-3843
[13]  Jing Chuanyong, Liu Suqin, Patel Manish, et al. Arsenic leachability in water treatment adsorbents. Environmental Science & Technology, 2005,39(14):5481-5487
[14]  Paul K. Westerhoff, Troy M. Benn, Abraham S.C. Chen, et al. Assessing arsenic removal by metal (Hydr)oxide adsorptive media using rapid small scale column tests. EPA Report 600/R-08/051, US EPA, 2008
[15]  Kiril Hristovski, Andyew Baumgardner, Paul Westerhoff. Selecting metal oxide nanomaterials for arsenic removal in fixed bed columns: From nanopowders to aggregated nanoparticle media. Journal of Hazardous Materials, 2007,147(1-2):265-274
[16]  Maria E. Pena, George P. Korfiatis, Manish Patel, et al. Adsorption of As(V) and As(III) by nanocrystalline titanium dioxide. Water Research, 2005,39(11):2327-2337
[17]  Andre Nel, Tian Xia, Lutz M?dler, et al. Toxic potential of materials at the nanolevel. Science, 2006,311(5761):622-627
[18]  景传勇, 崔金立. 一种用于饮用水净化的二氧化钛颗粒吸附剂的制备方法:中国,201110022984.X.2011
[19]  王志远, 张凯. 活性炭负载TiO2的制备与表征.山东化工, 2009,38(2):8-11 Wang Zhiyuan, Zhang Kai. Preparation and performance of activated carbon and TiO2/AC. Shandong Chemical Industry, 2009,38(2):8-11(in Chinese)
[20]  Gregory J. Wilson, Aaron S. Matijasevich, David R. G. Mitchell, et al. Modification of TiO2 for enhanced surface properties: Finite Ostwald ripening by a microwave hydrothermal process. Langmuir,2006,22(5):2016-2027
[21]  Snejana Bakardjieva, Jan Subrt, Vaclav Stengl, et al. Photoactivity of anatase-rutile TiO2 nanocrystalline mixtures obtained by heat treatment of homogeneously precipitated anatase. Applied Catalysis B: Environmental, 2005,58(3-4):193-202
[22]  Zhang Xin, Li Xiaogang, Wu Junsheng. Simple sol-gel route to synthesis of mesoporous TiO2. Sol-Gel Sci. Technol., 2009,51(1):1-3
[23]  豆小敏, 于新, 赵蓓, 等. 5种铁氧化物去除As(V)性能的比较研究.环境工程学报, 2010,4(9):1989-1994 Dou Xiaomin, Yu Xin, Zhao Bei, et al. A performance comparison of arsenate removal from water by five iron oxides. Chinese Journal of Environmental Engineering, 2010,4(9):1989-1994(in Chinese)
[24]  Pena Maria, Meng Xiaoguang, Jing Chuanyong, et al. Adsorption mechanism of arsenic on nanocrystalline titanium dioxide. Environmental Science & Technology, 2006,40(4):1257-1262
[25]  郭华明,王焰新,李永敏. 山阴水砷中毒区地下水砷的富集因素分析. 环境科学,2003,24(4):60-67 Guo Huaming, Wang Yanxin, Li Yongmin. Analysis of factors resulting in anomalous arsenic concentration in groundwaters of shanyin, Shanxi Province. Environmental Science, 2003,24(4):60-67
[26]  Rengaraj S., Kyeong-Ho Yeon, Seung-Hyeon Moon. Removal of chromium from water and wastewater by ion exchange resins. Journal of Hazardous Materials, 2001,87(1-3):273-287
[27]  Luo Ting, Cui Jinli, Hu Shan, et al. Arsenic removal and recovery from copper smelting wastewater using TiO2. Environmental Science & Technology, 2010,44(23):9094-9098
[28]  Paritam K. Dutta, Ajay K. Ray, Virender K. Sharma, et al. Adsorption of arsenate and arsenite on titanium dioxide suspensions. Journal of Colloid and Interface Science, 2004,278(2):270-275
[29]  Stachowicz M., Hiemstra T., Van Riemsdijk W. H., Multi-competitive interaction of As(III) and As(V) oxyanions with Ca2+, Mg2+, PO43-, and CO32- ions on goethite. Journal of Colloid and Interface Science, 2008,320(2):400-414

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133