摘要
研究了重金属铅(Pb2+)在水中对中砂的入渗实验,观察中砂对重金属铅的长期吸附能力,运用Elovich方程拟合图,双常数方程拟合图等对得出的数据进行整理分析,得到中砂对铅的吸附能力在开始的一段时间内是不断增加的,但是到达22.5h时吸附能力会降低,随着时间的持续,吸附能力还会再次增强,然而时间进行到130h后,其吸附能力又一次降低,吸附的铅离子浓度将减少,减少量较第一次减少值小。
The infiltration experiment of the high density metal lead （Pb^2＋） in water into the medium-sized sand was researched, the long-term adsorption capacity on high density lead was observed, fitting diagrams were created by the Elovich equation and double constant equation respect, from which data were analyzed, the conclusion is that the adsorption capacity of the sand on the lead in the beginning of a period of time is increasing, but the arrival 22.5h adsorption capacity will be reduced, as the time continued, the adsorption capacity will be enhanced again, however, the time proceeds to 130h , the adsorption capacity once again reduced, adsorbed lead ion concentration will be reduced, the amount reduction smaller than the first time.
出处
《吉林水利》
2012年第12期4-6,共3页
Jilin Water Resources
基金
吉林大学"大学生创新性实验计划"项目(2011B64167)
关键词
中砂
重金属铅
吸附机理
medium-sized sand
high density metal lead
adsorption mechanism
