Bio-separation of toxic arsenate ions from dilute solutions by native and pretreated biomass of Aspergillus fumigatus in batch and column mode:: Effect of biomass pretreatment

被引：13

作者：

Sathishkumar, M. ^{[2
]}

Binupriya, A. R. ^{[1
,2
]}

Swaminathan, K. ^{[1
,2
]}

Choi, J. G. ^{[3
]}

Yun, S. E. ^{[1
]}

机构：

[1] Chonbuk Natl Univ, Inst Agr Sci & Technol, Dept Food Sci & Technol, Div Biotechnol, Jeonju 561756, South Korea

[2] Bharathiar Univ, Dept Biotechnol, Microbial Biotechnol Div, Coimbatore 641046, Tamil Nadu, India

[3] Natl Agr Prod Qual Management Serv, Jeonju 561823, South Korea

来源：

BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY | 2008年 / 81卷 / 03期

关键词：

Aspergillus fumigatus; arsenic; pretreatment; adsorption;

D O I：

10.1007/s00128-008-9496-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The sorption of As(V) from aqueous solution onto live and pretreated biomass of Aspergillus fumigatus was studied. The studies on optimization of contact time, adsorbent dosage and pH showed that the FeCl(3) treated and FeSO(4) treated biomass had the maximum capacity to adsorb As(V) while acid treated biomass was found to be minimum. Adsorption parameters were determined using both Langmuir and Freundlich isotherm models. The maximum adsorption capacity of 0.054 mg/g was observed in FeCl(3) treated and FeSO(4) treated biomasses. Column mode studies were conducted using FeSO(4) treated biomass to compare its efficacy with batch mode to adsorb As(V). Batch mode experiments proved to be efficient. Desorption studies were also carried out with dilute sodium hydroxide to recover both the adsorbent and adsorbate.

引用

页码：316 / 322

页数：7

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