期刊
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
卷 47, 期 1, 页码 333-345出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s13369-021-05362-8
关键词
Adsorption; Biochar composites; Heavy metals; Isotherms; Kinetics modelling; Removal mechanism
资金
- Higher Education Commission, SRGP Project [1847]
Efficient adsorbents were successfully fabricated by modifying orchard waste biochar (BC), leading to improved removal of copper [Cu(II)] from aqueous solutions. BC/Fe-0 exhibited a higher initial sorption rate and greater selectivity for Cu(II) removal compared to BC/P and other tested adsorbents, making it a promising green and cost-effective alternative for Cu(II) removal.
Efficient adsorbents were fabricated by modifying the orchard waste biochar (BC) to produce zero-valent iron composited BC (BC/Fe-0) and phosphorus embedded BC (BC/P). The efficacy of these adsorbents for copper [Cu(II)] removal from aqueous media was investigated via pH, kinetics, and adsorption batch trials. The solution pH 7 was found optimum for the highest Cu(II) removal. Elovich model was fitted well to the Cu(II) kinetics adsorption and higher initial sorption rate 79.44, 75.71, 72.28, 61.60 mg g(-1) min(-1) for BC/Fe-0, BC, AC, and BC/P, respectively, was observed than other kinetic models. Langmuir, Freundlich, and Redlich-Peterson isotherm models were applied to the experimental data and Langmuir model fitted well predicting the adsorption capacity of 427.11 mg g(-1). The BC became more selective in copper removal after the introduction of Fe-0, and a higher removal rate of Cu(II) was observed in a short time compared to the other tested adsorbents. Therefore, zero-valent iron composited orchard waste-derived biochar as a green and cost-effective adsorbent can open new ways for the efficient removal of Cu(II) from aqueous solutions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据