期刊
BIORESOURCE TECHNOLOGY
卷 322, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.124539
关键词
Alkali lignin; Biochar property; Pb(II) adsorption; Sorption behavior; Mechanisms
资金
- China postdoctoral science foundation [2018M640750]
- Natural science foundation of Hunan province, China [2019JJ50224]
- Natural Science Foundation of Hunan [2018JJ3301]
- Bureau Science and Technology of Changsha [kq1901034]
- Key scientific research project of Education Department of Hunan Province [20A245]
The study found that biochar derived from alkali lignin has superior adsorption performance, fast absorption rate, and high maximum adsorption capacity, making it suitable for pollution remediation.
Developing a cost-effective and high-efficiency biochar is critical in various environmental applications. Lignin-based materials are natural and abundant adsorbents to heavy metals benefited from their special polyphenol structure and physicochemical properties. In this study, adsorption capacities to Pb(II) by alkali lignin (AL) and its biochar derivative (ALB) were comparatively discussed, and the latter exhibited superior adsorption performance, with a maximum adsorption capacity almost twice that of the former, and a much faster absorption rate. The q(m) value of ALB was significantly superior to that of other reported biochar materials. Pb(II) was mainly adsorbed into ALB in three forms: mineral precipitation, ion exchange, and surface complexation, with complexation and mineral precipitation being the dominant mechanisms of adsorption. This study demonstrates that alkali-lignin derived biochar is a promising material for the remediation of polluted by Pb(II).
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