| Co3O4对2,4-二氯苯酚的吸附性能影响 |
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| 引用本文： | 王召东,杜慧显,赵保林,刘雪平,毛艳丽,康海彦,刘彪,郭一飞,刘红盼,宋忠贤.Co3O4对2,4-二氯苯酚的吸附性能影响[J].化学世界,2021(1):52-58. |
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| 作者姓名： | 王召东 杜慧显 赵保林 刘雪平 毛艳丽 康海彦 刘彪 郭一飞 刘红盼 宋忠贤 |
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| 作者单位： | ;1.河南城建学院河南省水体污染与防治重点实验室;2.重庆文理学院材料与化学工程学院 |
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| 基金项目： | 河南城建学院博士引进启动基金(No.990/Q2017011);河南城建学院青年骨干教师(No.YCJQNGGJS201903)资助项目;河南省高等院校重点学科(No.20A610003)。 |
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| 摘 要： | 以硝酸钴(Co(NO3)2·6H2O)为钴源,考察了不同沉淀剂(6 mol/L氨水、1 mol/L NaOH溶液、饱和碳酸铵溶液)对Co3O4吸附2,4-二氯苯酚(2,4-DCP)性能的影响。考察了焙烧温度、pH值、沉淀剂种类、吸附剂用量、2,4-DCP初始质量浓度对Co3O4吸附性能的影响,并进行了离子干扰实验。结果表明,焙烧温度为300℃、pH=9.0、沉淀剂为1 mol/L NaOH时,Co3O4对20 mg/L 2,4-DCP吸附性能最佳。Co3O4对2, 4-DCP的动力学吸附过程符合准二级动力学方程,等温吸附方程符合Langmuir方程,吸附过程以单分子层化学吸附为主。
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| 关 键 词： | Co3O4 2 4-二氯苯酚 沉淀剂 焙烧温度 吸附 |
Adsorption of Co_3O_4 to 2,4-Dichlorophenol: Preparation Process and Properties |
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| Wang Zhaodong,Du Huixian,Zhao Baolin,Liu Xueping,Mao Yanli,Kang Haiyan,Liu Biao,Guo Yifei,Liu Hongpan,Song Zhongxian.Adsorption of Co_3O_4 to 2,4-Dichlorophenol: Preparation Process and Properties[J].Chemical World,2021(1):52-58. |
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| Authors: | Wang Zhaodong Du Huixian Zhao Baolin Liu Xueping Mao Yanli Kang Haiyan Liu Biao Guo Yifei Liu Hongpan Song Zhongxian |
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| Affiliation: | (Henan University of Urban Construction,Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology,Pingciiiigshun,Henan 467000,China;College of Materiuls and Chemical Engineering,Chongqing University of Arts and Sciences,Chongqing 402160,China) |
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| Abstract: | Co3O4 was prepared by using Co(NO3)2·6 H2O as cobalt source with different precipitants(6 mol/L NH4OH, 1 mol/L NaOH and saturated(NH4)2CO3 solution). The effects of calcination temperature, pH value, precipitant, adsorbent dosage and initial concentration of 2,4-dichlorophenol(2,4-DCP) on the removal of 2,4-DCP over Co3O4 were investigated. The results showed that the optimal conditions were the combustion temperature of 300 ℃, pH of 9.0, precipitant of 1 mol/L NaOH the initial concentration of 2,4-DCP of 20 mg/L, thus Co3O4 exhibited the best adsorption proper on 2,4-DCP. Furthermore, the kinetic adsorption process of Co3O4 on 2,4-DCP obeyed the quasi-second-order kinetic equation, and the thermodynamic adsorption obeyed the Langmuir equation. Besides, the adsorption process of Co3O4 on 2,4-DCP was dominated by single molecular layer chemical adsorption. |
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| Keywords: | Co3O4 2 4-dichlorophenol different precipitants calcination temperatures adsorption |
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