摘要
活性炭由于具有较大的比表面积,可用于汞污染土壤中汞蒸汽的吸附。改性载硫活性炭利用汞的亲硫性,可有效提高汞吸附效率。本研究利用5种不同载硫量活性炭吸附汞蒸汽,考察了活性炭载硫量对汞蒸汽吸附能力的影响。研究结果表明:活性炭的载硫量与吸附能力并不呈现完全对应关系,载硫量为10%的活性炭的吸附性能最好,而20%的载硫活性炭的吸附性能最差。采用300g的基础活性炭,5%、10%、15%及20%载硫活性炭的饱和吸附量分别为26.38、42.70、43.53及16.26 mg。
Activated carbon has a large specific surface area,which can be used to adsorb Mercury-Vapor in mercury contaminated soils. Modified activated carbon loaded by sulfur can effectively improve the adsorption capacity of mercury. In this study,5 groups of activated carbon loaded with different amount of sulfur were employed for studying their adsorption capacity of mercury vapor. The results of the study show that the sulfur contents in activated carbon is not completely co- related with the adsorption capacity,best performance in terms of adsorption capacity was witnessed as sulfur content in activated carbon is about at 10%,while worst performance was obtained as sulfur content increased to about 20%. The saturated adsorption capacities for 5%,10%,15% and 20% sulfur-loaded activated carbon( 300 g base activated carbon) were 26. 38 mg,42. 70 mg,43. 53 mg and 16.26 mg respectively.
出处
《环保科技》
2016年第4期1-4,共4页
Environmental Protection and Technology
关键词
活性炭
汞
吸附
activated Carbon
mercury
adsorption
