Document Detail

Organoarsenic resistance and bioremoval of Acidithiobacillus ferrooxidans.
MedLine Citation:
PMID:  20362439     Owner:  NLM     Status:  MEDLINE    
The tolerance and bioremoval of dimethylarsinic acid (DMA(V)) by Acidithiobacillus ferrooxidans (A. ferrooxidans) were investigated here. The inhibitory concentration (IC) of DMA(V) was determined for A. ferrooxidans. The effects of various parameters such as pH, contact time, initial DMA(V) concentration, biosorbent dose and temperature were systematically examined to study the biosorption processes. Results indicated that Langmuir model fitted better than Freundlich model to the equilibrium data. Analysis of kinetic data showed that the biosorption processes of DMA(V) involved pseudo-second-order kinetics. Thermodynamic analysis showed that the biosorption of DMA(V) onto A. ferrooxidans was feasible, spontaneous, endothermic and chemisorptive under examined conditions. Fourier transform infrared spectroscopy (FTIR) showed the involvement of -OH, -NH and -SO(3) groups in the biosorption process.
Lei Yan; Huanhuan Yin; Shuang Zhang; Jiangong Duan; Yongquan Li; Peng Chen; Hongyu Li
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-04-01
Journal Detail:
Title:  Bioresource technology     Volume:  101     ISSN:  1873-2976     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-05-10     Completed Date:  2010-08-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  6572-5     Citation Subset:  IM    
Copyright Information:
Copyright 2010 Elsevier Ltd. All rights reserved.
MOE Key Laboratory of Arid and Grassland Ecology, School of Life Sciences, Lanzhou University, Lanzhou, PR China.
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MeSH Terms
Acidithiobacillus / metabolism*
Arsenic / metabolism,  pharmacology*
Biodegradation, Environmental*
Hydrogen-Ion Concentration
Organometallic Compounds / metabolism,  pharmacology*
Spectroscopy, Fourier Transform Infrared
Reg. No./Substance:
0/Organometallic Compounds; 7440-38-2/Arsenic

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