苤蓝皮生物吸附去除水体中的阴离子染料  

REMOVAL OF ANIONIC DYES FROM AQUEOUS SOLUTION BY BIOSORPTION ON KOHLRABI PEEL

作　　者：孙影芝[1] 龚仁敏[1] 张小平[1] 刘慧君[1] 杨超[1] 

机构地区：[1]安徽师范大学生命科学学院,安徽芜湖241000

出　　处：《安徽师范大学学报（自然科学版）》2005年第1期80-83,共4页Journal of Anhui Normal University(Natural Science)

基　　金：安徽省教育厅自然科学基金(2003kj157);"安徽省重要生物资源保护与利用重点实验室"基金.

摘　　要：用低值的地产苤蓝皮材料作为生物吸附剂去除水体中的三种阴离子染料苋菜红、日落黄、亮绿,研究了pH值、吸附剂量、染料浓度、吸附剂粒径、离子强度、吸附时间等对吸附的影响,确定了最佳吸附条件.结果表明:三种染料在pH值为2时去除率较高;吸附在36h达到平衡.吸附等温线符合Langmuir模式,吸附过程符合Langergren准一级动力学方程.In this paper, a low-cost, locally available raw material used as sorbent for its removal anionic dyes from aqueous solution was investigated. Granule prepared from kohlrabi peel had been used for biosorption of three anionic dyes,i.e Amaranth (Am), Sunset yellow (SY), Light green (SF). Biosorption studies were carried out under varying experimental conditions of initial pH, sorbent dosage, ion strength, dye concentration, particle size and contact time. The optimal pH for favorable sorption of dyes were pH2. The sorption equilibriums were reached at about 36h. The equilibrium data could be described well by the Langmuir isotherm equation. The biosorption processes followed the pseudo-first-order rate kinetics.

关 键 词：阴离子染料 水体 生物吸附剂 吸附条件 去除率 吸附时间 吸附过程 除水 粒径 pH值 

分 类 号：X703[环境科学与工程—环境工程] X788.035