Sorption of Pb(II) and Cu(II) on the colloid of black soil, red soil and fine powder kaolinite: effects of pH, ionic strength and organic matter
Sorption of Pb(II) and Cu(II) on the colloid of black soil, red soil and fine powder kaolinite: effects of pH, ionic strength and organic matter
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黑土、红土和细粉高岭石胶体对 Pb(II) 和 Cu(II) 的吸附：pH、离子强度和有机质的影响
DOI：
10.1080/26395940.2019.1578186
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发表时间：
2019-01
影响因子：
3.3
通讯作者：
Zhuhong Ding
中科院分区：
文献类型：
--
作者：
Yuting Liu;Zhao Xu;Xin Hu;Nan Zhang;Ting Chen;Zhuhong Ding
分析了两种土壤胶体和微粉高岭石对铅(II)、铜(II)的吸附潜力，考察了pH值、离子强度和有机质对吸附的影响。用X射线衍射仪(XRD)和傅里叶变换红外光谱仪(FTIR)对两种土壤胶体和微粉高岭土进行了表征。黑土矿物组成和表面官能团较多。吸附作用依赖于pH。在腐植酸存在下，土壤对Pb2+和Cu2+的吸附增加，但离子强度的增加降低了吸附。铅(II)、铜(II)在三种土壤胶体上的吸附动力学和吸附等温线分别符合准二级模型和Langmuir/Freundlich模型。黑土对铅(II)和铜(II)的吸附容量最大(44.287 mg g−1和11.109 mg g−1)，其次是红壤(9.764和4.152 mg g−1)和高岭土(7.612和3.064 mg g−1)。这两种金属在吸附过程中相互竞争。
ABSTRACT The sorption potentials of two soil colloids and fine powder kaolinite for Pb(II) and Cu(II) were analyzed, and the effects of pH, ionic strength and organic matter on the sorption were invetigated. The two soil colloids and fine powder kaolinite were characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analysis. Black soil had more mineral compositions and surface functional groups. The sorption was pH-dependent. In the presence of humic acid, the adsorption of Pb(II) and Cu(II) ions on soil was increased, while the increase in ionic strengths decreased the adsorption. Sorption kinetics and isotherms of Pb(II) and Cu(II) onto three soil colloids were well fitted with Pseudo-second-order model and Langmuir model/Freundlich model. Black soil had the highest sorption capacity of Pb(II) (44.287 mg g−1) and Cu(II) (11.109 mg g−1), followed by red soil (9.764 and 4.152 mg g−1) and kaolinite (7.612 and 3.064 mg g−1). The two metals competed with each other during sorption.
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影响因子：
8.8
作者：
C. Lai;Chih-Yu Chen
通讯作者：
C. Lai;Chih-Yu Chen
DOI：
10.1016/j.scitotenv.2013.07.072
发表时间：
2014
期刊：
The Science of the total environment
影响因子：
--
作者：
Fanfeng Zeng;Yan He;Z. Lian;Jianming Xu
通讯作者：
Fanfeng Zeng;Yan He;Z. Lian;Jianming Xu
影响因子：
2.8
作者：
J. Zuo;Q. Fu;Xiao-juan Su;Yonghong Liu;Jun Zhu;Hongqing Hu;Youjun Deng
通讯作者：
J. Zuo;Q. Fu;Xiao-juan Su;Yonghong Liu;Jun Zhu;Hongqing Hu;Youjun Deng
影响因子：
8.8
作者：
Xiaoyun Xu;Xinde Cao;Ling Zhao
通讯作者：
Xiaoyun Xu;Xinde Cao;Ling Zhao
影响因子：
1.4
作者：
R. Subha;C. Namasivayam
通讯作者：
R. Subha;C. Namasivayam