Journal
BIORESOURCE TECHNOLOGY
Volume 101, Issue 15, Pages 6035-6038Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.02.094
Keywords
Bioelectrical reactor; Thiobacillus ferrooxidans bacteria; Current stimulation
Funding
- Central Colleges of basic scientific research and operating expenses of special funds [531107040079]
- National 863 High Technologies Research Foundation of China [2004AA649370]
- National Basic Research Program (973 Program) [2005CB724203]
- National Foundation for Distinguished Young Scholars [5042596, 50225926]
- Program for ChangjiangScholars and Innovative Research Team in University [IRT0719]
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A bioelectrical reactor without cation-specific membrane was designed to test effects of direct electrical current on growth of Thiobacillus ferrooxidans bacterium. The results indicated that the cell significantly enhanced the growth of T. ferrooxidans. At a current of 30 mA, the maximum cells density reached 1.39 x 10(9) cells/mL within 84 h, which was 10 times faster than under a conventional cultivation method, in which electrical current is not used. A lag phase during the growth of T. ferrooxidans was observed when direct electrical current was applied, and the lag phase became longer under higher current intensity. (C) 2010 Elsevier Ltd. All rights reserved.
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