废电池-污泥吸附剂的优化制备及对Cr(Ⅵ)的吸附特性

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英文篇名：Optimal fabrication of the waste batteries-sludge-based adsorbent and its properties for the adsorption of Cr(Ⅵ) 作者：牛志睿 ; 祁乙浩 ; 刘羽 ; 史宁 ; 刘强 英文作者：NIU Zhirui;QI Yihao;LIU Yu;SHI Ning;LIU Qiang;School of Petroleum and Environmental Engineering,Yan'an University; 关键词：废电池 ; 污泥 ; 吸附剂 ; 制备 ; Cr(Ⅵ) ; 吸附 英文关键词：waste batteries;;sewage sludge;;adsorbent;;fabrication;;Cr(Ⅵ);;adsorption 中文刊名：环境污染与防治 英文刊名：Environmental Pollution & Control 机构：延安大学石油工程与环境工程学院; 出版日期：2019-03-15 出版单位：环境污染与防治 年：2019 期：03 基金：国家自然科学基金资助项目(No.21866031);; 国家级大学生创新创业训练计划项目(No.201710719016);; 陕西省自然科学基础研究计划项目(No.2018JM2054);; 陕西省教育厅专项科研计划项目(No.18JK0879);; 延安大学博士科研启动项目(No.YDBK2017-03);延安大学引导项目(No.YDY2017-10) 语种：中文; 页：13-16 页数：4 CN：33-1084/X ISSN：1001-3865 分类号：X703

摘要

以污水处理厂污泥为原料、废电池电极材料和ZnCl2为活化剂,耦合活化制备废电池-污泥吸附剂。利用筛选实验设计中Plackett-Burman和响应曲面法中Box-Behnken实验联用得出优化条件,3次平行实验验证得到制备的最优吸附剂碘吸附值和得率平均分别为474mg/g、44.8%。Cr(Ⅵ)吸附表明,Langmuir吸附等温模型(R2=0.995 3)和准二级动力学模型(R2=0.999 8)更适合描述该最优吸附剂对Cr(Ⅵ)的吸附行为。
        Plackett-Burman and Box-Behnken were employed to optimize the experimental conditions for the fabrication of waste batteries-sludge-based adsorbent from sewage sludge by coupling-chemical activation method using waste batteries electrode materials and zinc chloride as the activating agent.Iodine adsorption value and the yield of the optimal adsorbent were 474 mg/g and 44.8% of 3 parallel experiments.It was showed that Langmuir isotherm model (R~2=0.995 3)and pseudo-second-order kinetics model(R~2=0.999 8)were more suitable for describing the Cr(Ⅵ)adsorption process.

引文

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