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Friedel化合物对VO_4^(3-)的吸附及其作用机制 被引量：4

Adsorption capacity of Friedel's salt for VO_4^(3-) and its mechanisms
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摘要 为了解Friedel化合物作为吸附剂去除水中VO43-的应用潜能,研究了Friedel化合物对VO34-的吸附动力学和吸附等温线,并结合吸附产物的XRD和红外光谱分析探讨了Friedel化合物的吸附作用机理.结果表明:Friedel化合物对VO34-有较高的吸附容量和吸附速率,其吸附等温线符合Langmuir等温吸附模型(R2>0.93),理论吸附容量为72.40mg.g-1.Friedel化合物对VO34-的吸附作用机理为层间离子交换和表面吸附. In order to understand the application potential of Friedel＇s salt,Ca4Al2（OH）12Cl2（H2O）4,as an adsorbent for VO4^3- removal,the adsorption behavior of Friedel＇s salt for VO4^3- from aqueous solution was examined,through investigating the adsorption kinetics and adsorption isotherms. Both the experimental and modeled data indicated that Friedel＇s salt could adsorb a large amount of VO4^3- with a high adsorption rate. The adsorption isotherm data fit the Langmuir equation well （R^20.93） and the maximum adsorption amount of VO4^3- was 72.40 mg·g^-1. The mechanisms of Friedel＇s salt adsorption of VO4^3- were interlayer ion-exchange and surface adsorption.
作者 许云峰 戴迎春 张佳 曹亚丽 刘强 吴岳英 钱光人
机构地区 上海大学环境与化学工程学院
出处 《环境科学学报》 CAS CSCD 北大核心 2010年第4期801-805,共5页 Acta Scientiae Circumstantiae
基金 国家自然科学基金项目(No. 20477024 20677037 20877053) 上海市重点学科(No. S30109) 国家重大科技专项子课题(No.2008ZX07421-002-09)~~
关键词 层状双羟基金属复合氧化物(LDH) Friedel化合物 VO4^3- 吸附 Layered Double Hydroxides （LDH） Friedel＇s salt VO4^3- adsorption
分类号 X131 [环境科学与工程—环境科学]
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参考文献17

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共引文献140

同被引文献41

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环境科学学报
2010年 第4期

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