改性茶叶对染料的生物吸附作用  

Biosorption of Dyes by Modified Tea

作　　者：滕涛[1] 何穆 李玉中[1] 

机构地区：[1]衡阳师范学院生命科学系,湖南衡阳421008 [2]汨罗市川山坪中学,湖南汨罗414405

出　　处：《贵州农业科学》2012年第4期206-209,共4页Guizhou Agricultural Sciences

摘　　要：为研究改性茶叶的吸附效果,采用亚甲基蓝(MB)、固绿(FG)、中性红(NR)3种染料,探索了吸附时间、吸附温度、染料的初始浓度及茶叶投入量等因素对其吸附染料效果的影响,确定了改性茶叶最佳吸附条件。结果表明:改性茶叶对3种染料的去除率均较高,当溶液pH为1、吸附温度为30～40℃时,用0.9g改性茶叶处理浓度为0.01g/L的亚甲基蓝、固绿以及浓度为0.02g/L的中性红染料,20min后的吸附率均在75%以上,且茶叶对3种染料的吸附符合Langmuir方程。To explore the biosorption of dyes by modified tea,three kinds of dyes,i.e.methylene blue（MB）,fast green（FG） and neutral red（NR） were selected for studying influence of various operation conditions on sorption,such as the effects of sorption time,tempereture,initial concentration and sorbent dosage.The best sorption condition was determined.The results showed that the optimum conditions included pH=1,temperatur 30~40℃,sorbent dosage 0.9 g and sorption time 20 min,when the initial concentration of MB,FG and NR was 0.01 g/L,0.01 g/L and 0.2 g/L,respectively.The percentages of three dyes adsorbed were all higher than 75%.The Langmuir model was able to describe the biosorption equilibrium of three kinds of dyes with modified tea.

关 键 词：改性茶叶 亚甲基蓝 中性红 固绿 生物吸附 

分 类 号：S571.1[农业科学—茶叶生产加工]