期刊文献+

Zn-MOF-74对Cd(Ⅱ)的吸附性能及机理研究 被引量:4

Adsorption performance and mechanism of Cd(Ⅱ) onto Zn-MOF-74
下载PDF
导出
摘要 研究了新型吸附材料Zn-MOF-74对水体中重金属Cd(Ⅱ)的吸附性能和吸附机理。结果表明,吸附过程较好地符合Langmuir模型、Temkin模型、D-R模型和准二级动力学模型,最大吸附量为16.77 mg/g;吸附过程为物理吸附和化学吸附共同作用,且为自发的放热反应。采用Zn-MOF-74处理0.5 mg/L的含镉废水,有效时长可达36.25 h,Cd(Ⅱ)去除率>90%;NaCl溶液的解吸率可达到85%。吸附位点主要集中在孔道中,有静电作用、化学作用和氢键作用。 This paper was aimed at studying the performance and mechanism of Zn-MOF-74,a new porous adsorbent material,for removing heavy metal cadmium in water.The results showed that the static adsorption process accorded with Langmuir,Temkin,D-R and pseudo-second-order models,and the maximum adsorption capacity was 16.77 mg/g.The adsorption process was a combination of physical adsorption and chemical adsorption with a self-heating reaction.In the dynamic adsorption experiment,the Cd(Ⅱ)removal rate of 90%was achieved within 36.25 h for degrading the cadmium the initial concentration of 0.5 mg/L.Additionally,the desorption rate reached 85%in 0.25 mol/L NaCl solution.The adsorption sites were mainly concentrated in the micropores and mesopores by electrostatic action,chemical action and hydrogen bonding.
作者 吴成晨 肖瑜 吴川 郑潇 陈钊 舒小华 Wu Chengchen;Xiao Yu;Wu Chuan;Zheng Xiao;Chen Zhao;Shu Xiaohua(Guangxi Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area,Guilin University of Technology,Guilin 541004,China;Huafon Microfibre(Shanghai)Co.,Ltd.,Shanghai 201508,China)
出处 《工业水处理》 CAS CSCD 北大核心 2020年第2期63-67,共5页 Industrial Water Treatment
基金 国家自然科学基金项目(51569008) 广西自然科学基金项目(2015GXNSFAA139240) 广西矿冶与环境科学实验中心项目(KH2012ZD004) 广西高校中青年教师基础能力提升项目(2018KY0259)
关键词 Zn-MOF-74 吸附 Cd(Ⅱ) MOF-Zn-74 adsorption Cd(Ⅱ)
  • 相关文献

参考文献3

二级参考文献10

共引文献76

同被引文献28

引证文献4

二级引证文献4

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部