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Zn/Al双金属氧化物对水中硫酸根离子的吸附性能

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程珺煜, 岳秀萍, 曹岳, 张悦. Zn/Al双金属氧化物对水中硫酸根离子的吸附性能[J]. 环境工程学报, 2014, 8(1): 131-137.
引用本文: 程珺煜, 岳秀萍, 曹岳, 张悦. Zn/Al双金属氧化物对水中硫酸根离子的吸附性能[J]. 环境工程学报, 2014, 8(1): 131-137.
shu
Cheng Junyu, Yue Xiuping, Cao Yue, Zhang Yue. Adsorptive removal of sulfate from water by Zn/Al layered double oxide[J]. Chinese Journal of Environmental Engineering, 2014, 8(1): 131-137.
Citation: Cheng Junyu, Yue Xiuping, Cao Yue, Zhang Yue. Adsorptive removal of sulfate from water by Zn/Al layered double oxide[J]. Chinese Journal of Environmental Engineering, 2014, 8(1): 131-137.
shu

Zn/Al双金属氧化物对水中硫酸根离子的吸附性能

  • 1.

    太原理工大学环境科学与工程学院, 太原 030024

  • 基金项目:

    山西省科技攻关项目（20120311008-01）

    山西省高等学校教学改革项目（2011年）

  • 中图分类号: X523

Adsorptive removal of sulfate from water by Zn/Al layered double oxide

  • 1.

    College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China

  • Fund Project:

  • 摘要: 研究了用Zn/Al水滑石制得的Zn/Al双金属氧化物（Zn/Al-300）吸附剂对水中硫酸根离子的吸附，考查了吸附剂投加量、初始pH等因素对硫酸根离子吸附的影响。结果表明，Zn/Al-300对水中硫酸根离子的吸附符合Langmuir吸附等温方程，理论最大吸附量为62.5 mg/g。运用动力学方程进行拟合，吸附过程符合准二级动力学方程；溶液的pH影响吸附剂对硫酸根的吸附，在pH=5.5时硫酸根的去除率最大；X射线衍射结果显示，水滑石经过焙烧后丧失了原有的构形，并在吸附硫酸根离子后重新恢复水滑石的部分层状结构。吸附机制主要为Zn/Al-300从溶液中获取阴离子以重建水滑石的晶体结构，即“记忆效应”。对吸附后的双金属氧化循环应用4此后，吸附容量几乎不变，说明双金属氧化物具有可循环型。通过将Zn/Al-300与其他几种吸附剂的经济性分析，表明此吸附剂在使用过程中具有一定优势。
    Abstract: The adsorption characteristics of sulfate from aqueous solution by the Zn/Al layered double oxide (Zn/Al-300) and its influencing factors,such as the pH of aqueous solution,dosage of Zn/Al-300,equilibrium isotherm and adsorption kinetic were studied.The results showed that the adsorption of sulfate on Zn/Al-300 was conformed to the Langmuir isotherm equation and the maximum adsorption capacity of Zn /Al-300 for sulfate was 62.5mg/g which was close to the stoichiometric adsorption.Three kinetic models were used to fit the experimental data,indicating that the pseudo-second-order kinetics model could better describe the adsorption process.The adsorption of sulfate with the maximum removal rate was found at pH=5.5.The results by X-ray diffraction ( XRD) showed that the reconstruction of its original layered structure in the presence of appropriate anions is mainly attributed to the removal sulfate mechanism of Zn/Al-300.Zn/Al-300 has a good desorption and it can be regenerated by calcination.Through the economical analysis and comparison, it was found that the Zn/Al-300 could be used to remove sulfate at the lowest costs.
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  • [1] Ashref Darbi,Thiruenkatachari Viraraghavan,Yee-hung Jin,et al.Sulfate removal from water.Water Quality Research Journal of Canada,2003,38(1):169-182
    [2] 顾秋香,苏庆平,刘丽,等.吸附法脱除水中硫酸根技术进展.无机盐工业,2008,40(11):5-7 Gu Q.X.,Su Q.P.,Liu L,et al.Progress on removal technology of SO42- from water by adsorption method.Inorganic Chemicals Industry,2008,40(11):5-7(in Chinese)
    [3] Reis M.A.M.,Almeida J.S.,Lemos P.C.,et al.Effect of hydrogen sulfide on growth of sulfate reducing bacteria.Biotechnology an Bioengineering,1992,40(5):593-600
    [4] Chol. E., Rim J.M.Competition and inhibition of sulfate reducers and methane producers in anaerobic treatment.Water Science Technology,1994,30(8):45-54
    [5] Boualfa C.Sulfate removal from aqueous solutions by hydrous iron oxide in the presence of heavy metals and competitive anions.Desalination,2010,250(1):428-432
    [6] Isa Z.Sulfate reduction relative to methane production in high-rate anaerobic digestion.Appliance Environmental Microbiology,1986,51(3):572-582
    [7] 赵鹏,孙进,李龙海.酸性矿井废水中硫酸根离子的矿物吸附特性研究.黄金,2006,27(4):54-56 Zhao P.,Sun J.,Li L.H.Characteristics of mineral adsorbent in adsorbing sulfate in acid mine drainage.Gold,2006,27(4):54-56(in Chinese)
    [8] 刘桂荣,廖立兵.柱撑蒙脱石吸附水中硫酸根离子的实验研究.矿物学报,2001,21(3):470-472 Liu G.R.,Liao L.B.Removal of sulfate from aqueous solutions by adsorption on pillared nimorillonite.Acta Minalogica Scinica,2001,21 (3):470-472(in Chinese)
    [9] 朱俊,王宁.天然沸石在环保中的应用.矿物学报,2003,23(3):250-254 Zhu J.,Wang N.Applications of natueal zeblites to environmental protection.Acta Minalogica Scinica,2003,23(3):250-254(in Chinese)
    [10] 贺琨.铝酸钙粉对水中硫酸根的去除研究.供水技术,2011,5(3):23-25 He K.Removal of sulfate from water by calcium aluminate powder.Water Technology,2011,5(3):23-25(in Chinese)
    [11] 孙媛媛,曾希柏,白玲玉.Mg /Al 双金属氧化物对As( V)吸附性能的研究.环境科学学报,2011,31(7):1377-1385 Sun Y.Y.,Zeng B.X.,Bai L.Y.Adsorption of arsenate from aqueous solution by Mg/Al layered double oxide.Acta Scientiae Circumstantiae,2011,31(7):1377-1385(in Chinese)
    [12] You Y.,Zhao H.,Vance G.F.Adsorption of dicamba ( 3,6-dichloro-2-methoxy benzoic acid) in aqueous solution by calcined layered double hydroxide.Apply Clay Science,2002,21(5):217-226
    [13] Chang M. Y.,Juang R. S.Adsorption of tannic acid,humic acid and dyes from water using the composite of chitosan and activated clay.J. Colloid Interface SCI,2004,278(1):18-25
    [14] Wang S.L.,Hseu R.J.,Chang R.R.,et al.Adsorption and thermal desorption of Cr(VI) on Li/Al layered double hydroxide.Colloids and Surfaces A: Physicochem.Eng.Aspects, 2006,277(1):8-14
    [15] 王立秋,王海增,李冬梅,等.层状氢氧化镁铝对偶氮染料酸性黑10B的脱色性能研究.环境污染治理技术与设备,2006,7(9):41-47 Wang L.Q.,Wang H.Z.,Li D.M.,et al.Study on decolorization of wastewater containing acid black 10B by Mg/Al layer double hydroxides.Techniques and Equipment for Environmental Pollution Control,2006,7(9):41-47(in Chinese)
    [16] Ho Y. S.,Mckay G.Kinetic models for the sorption of dye from aqueous solutions by wood.Transactions of the Institution of Chemical Engineers,1998, 76(2):183-191
    [17] 李明愉,曾庆轩,冯长根,等.离子交换纤维吸附儿茶素的热力学.化工学报,2005,56(7):1164-1167 Li M.Y.,Ceng Q.X.,Feng C.G.,et al.Thermodynamic study of adsorption of catechin on ion exchange fiber.Journal of Chemical Industry and Engineering,2005,56(7):127-130(in Chinese)
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  • 收稿日期:  2013-01-17
  • 刊出日期:  2014-01-03
程珺煜, 岳秀萍, 曹岳, 张悦. Zn/Al双金属氧化物对水中硫酸根离子的吸附性能[J]. 环境工程学报, 2014, 8(1): 131-137.
引用本文: 程珺煜, 岳秀萍, 曹岳, 张悦. Zn/Al双金属氧化物对水中硫酸根离子的吸附性能[J]. 环境工程学报, 2014, 8(1): 131-137.
shu
Cheng Junyu, Yue Xiuping, Cao Yue, Zhang Yue. Adsorptive removal of sulfate from water by Zn/Al layered double oxide[J]. Chinese Journal of Environmental Engineering, 2014, 8(1): 131-137.
Citation: Cheng Junyu, Yue Xiuping, Cao Yue, Zhang Yue. Adsorptive removal of sulfate from water by Zn/Al layered double oxide[J]. Chinese Journal of Environmental Engineering, 2014, 8(1): 131-137.
shu

Zn/Al双金属氧化物对水中硫酸根离子的吸附性能

  • 1. 太原理工大学环境科学与工程学院, 太原 030024
  • 收稿日期:  2013-01-17
基金项目:

山西省科技攻关项目（20120311008-01）

山西省高等学校教学改革项目（2011年）

摘要: 研究了用Zn/Al水滑石制得的Zn/Al双金属氧化物（Zn/Al-300）吸附剂对水中硫酸根离子的吸附，考查了吸附剂投加量、初始pH等因素对硫酸根离子吸附的影响。结果表明，Zn/Al-300对水中硫酸根离子的吸附符合Langmuir吸附等温方程，理论最大吸附量为62.5 mg/g。运用动力学方程进行拟合，吸附过程符合准二级动力学方程；溶液的pH影响吸附剂对硫酸根的吸附，在pH=5.5时硫酸根的去除率最大；X射线衍射结果显示，水滑石经过焙烧后丧失了原有的构形，并在吸附硫酸根离子后重新恢复水滑石的部分层状结构。吸附机制主要为Zn/Al-300从溶液中获取阴离子以重建水滑石的晶体结构，即“记忆效应”。对吸附后的双金属氧化循环应用4此后，吸附容量几乎不变，说明双金属氧化物具有可循环型。通过将Zn/Al-300与其他几种吸附剂的经济性分析，表明此吸附剂在使用过程中具有一定优势。

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