花生壳对水溶液中铜离子的吸附特性

研究了花生壳对水溶液中重金属铜离子的吸附特性.得到结论:0.25 g花生壳与Cu2 初始浓度为100-200 mg/L溶液充分接触10 h后,达到对Cu2 的最大吸附量.当Cu2 溶液pH值为定值,初始浓度范围在100-200 mg/L时,金属离子初始浓度越大吸附越有利;当Cu2 溶液初始浓度为定值时,溶液pH值升高,花生壳对Cu2 的吸附能力增强.且Cu2 溶液的pH值变化范围在2.0-5.6之间.在恒定pH值下,使用Langmuir模型和Freundlich模型描述花生壳对Cu2 离子的吸附特性.另外,其它金属阳离子的存在使花生壳对Cu2 的吸附量降低.

Biosorption of Copper(Ⅱ) in Aqueons Solution by Peanut-shuck

This paper investigates the biosorption characteristic of Cu2 by peanut-shuck.It was observed that after 10 hours biosorption,the maximum biosorption quantity was obtained when the peanut-shuck weight was 0.25 g and initial concentration of Cu2 was within 100-200 mg/L.The biosorption quantity of the biomass strongly depends on pH and the initial concentration of Cu2 .When the initial concentration of Cu2 is within 100-200 mg/L,the higher the initial concentration is,the more beneficial the biosorption,with the pH value fixed.When the initial concentration of Cu2 is the fixed value,the higher the pH value is,the higher the biosorption quantity is.In above procedure,the pH value range is within 2.0-5.6.The Langmuir and Freundlich equations can describe the biosorption characteristics of Cu2 by peanut-shuck with the pH value fixed.In addition,the biosorption quantity of the biomass will decrease because of the other cations.