将球磨生物炭包埋于海藻酸钙珠粒中用于去除水溶液中的镉（II）。
Entrapment of ball-milled biochar in Ca-alginate beads for the removal of aqueous Cd(II).
作者信息
Wang Bing, Gao Bin, Wan Yongshan
机构信息
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China.
Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA.
出版信息
J Ind Eng Chem. 2018;61:161-168. doi: 10.1016/j.jiec.2017.12.013.
Abstract
A novel adsorbent was synthesized through the entrapment of ball-milled biochar in Ca-alginate beads for the removal of aqueous Cd(II). Batch adsorption experiments were conducted to compare Cd(II) adsorption characteristics of ball-milled biochar (BMB), Ca-alginate (CA), and Ca-alginate entrapped ball-milled biochar (CA-BMB). All the tested adsorbents showed excellent sorption ability. The maximum Cd(II) adsorption capacity estimated with Langmuir isotherm modeling was 251.8 mg g for CA, 227.1 mg g for CA-BMB, and 40.0 mg g for BMB. The results demonstrate that entrapment of ball-milled biochar in Ca-alginate provides a low-cost and high-effective way for the removal of aqueous Cd(II).
摘要
通过将球磨生物炭包埋在海藻酸钙珠粒中合成了一种新型吸附剂，用于去除水溶液中的Cd(II)。进行了批量吸附实验，以比较球磨生物炭（BMB）、海藻酸钙（CA）和海藻酸钙包埋球磨生物炭（CA-BMB）对Cd(II)的吸附特性。所有测试的吸附剂都表现出优异的吸附能力。用朗缪尔等温线模型估算的最大Cd(II)吸附容量，CA为251.8 mg/g，CA-BMB为227.1 mg/g，BMB为40.0 mg/g。结果表明，将球磨生物炭包埋在海藻酸钙中为去除水溶液中的Cd(II)提供了一种低成本且高效的方法。
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