BIOSORPTION OF LEAD FROM AQUEOUS SOLUTION BY USING CHEMICALLY TREATED Saccharomyces cerevisiae

被引：6
|
作者：
Zhang, Ying [1 ,2 ]
Dai, Yingjie [1 ,2 ]
Liu, Baiyin [3 ]
Ma, Fang [2 ]
Zheng, Ru [1 ]
Dong, Limin [1 ]
机构：
[1] NE Agr Univ, Sch Resource & Environm, Harbin 150030, Peoples R China
[2] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China
[3] Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
来源：
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL | 2011年 / 10卷 / 06期
关键词：
biosorption; isotherm; lead; mechanism; Saccharomyces cerevisiae; HEAVY-METALS; MODIFIED BIOMASS;
D O I：
10.30638/eemj.2011.097
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Biosorption of lead (II) onto the biosorbent, represented by untreated S. cerevisiae and NaOH-treated S. cerevisiae was examined and the effects of contact time were investigated. The lead (II) biosorption was fast and equilibrium was attained within 90 mins. The maximum removal ratios of lead (II) for untreated S. cerevisiae and NaOH-treated S. cerevisiae after 3 h were 48.6% and 92.5%, respectively, with initial lead (II) concentration of 40 mg/L and optimum pH of 5.0. Data obtained from batch studies fitted well with the Langmuir isotherm model. Maximum adsorption capacity of lead (II) onto NaOH-treated S. cerevisiae was 21.6 mg/g at biosorbent dosage of 2 g/L at 25 degrees C. The nature of functional groups (i.e. amino, carboxyl and hydroxyl) and metal ion interactions was examined by the FT-IR technique.
引用
收藏
页码：729 / 732
页数：4
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