文献类型： 外文期刊
作者： Su, Baokun 1 ; Li, Zhi 1 ; Song, Xin 1 ; Liao, Shangqiang 2 ;
作者机构： 1.Qingdao Agr Univ, Sch Resources & Environm, Qingdao Engn Res Ctr Rural Environm, Qingdao 266109, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr Resources & Environm, Beijing 100097, Peoples R China
关键词： Biochar; Graphene-modified biochar; Cation; Sorption capacity; Mercury (Hg)
期刊名称：FRESENIUS ENVIRONMENTAL BULLETIN （ 影响因子：0.618； 五年影响因子：0.583 ）
ISSN： 1018-4619
年卷期： 2022 年 31 卷 10 期
页码：
收录情况： SCI
摘要： The heavy metal mercury is harmful to the ecosystem and human health. This study aimed to investigate the impact of ions on the mercury adsorption by different biochar. The results showed that there was a promoting effect of ions on the mercury adsorption by both biochar and modified biochar with a descending sequence of Ca2+ > K+ > Na+ > Mg2+. The modified biochar performed better than unmodified biochar in the mercury adsorption. At the concentration of 0.5mol/L Ca2+, modified maize straw has the largest adsorption amount and the best adsorption effect. Modified maize stalk biochar has the best adsorption effect on mercury in aqueous solution. The adsorption ability of various biochar followed the descending sequences of modified maize stalk biochar > modified peanut shell biochar > modified rice straw biochar, and maize stalk biochar > peanut shell biochar > rice straw biochar.
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