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.
作者
牛志睿
祁乙浩
刘羽
史宁
刘强
NIU Zhirui;QI Yihao;LIU Yu;SHI Ning;LIU Qiang(School of Petroleum and Environmental Engineering,Yan’an University,Yan’an Shaanxi 716000)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2019年第3期266-269,共4页
Environmental Pollution & Control
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)
关键词
废电池
污泥
吸附剂
制备
Cr(Ⅵ)
吸附
waste batteries
sewage sludge
adsorbent
fabrication
Cr(Ⅵ)
adsorption
