Taeho Lee

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Venkata N. Yarlagadda

Bhabha Atomic Research Centre

Lea Tan

National University of Ireland, Galway

Eric van Hullebusch

Paris Est Marne la Vallée University

Shrutika L Wadgaonkar

University of Mumbai

Mekonnen Maschal

Ethiopian Civil Service University (ECSU)

Staicu Lucian

University of Warsaw

Michael Pravikoff

Centre National de la Recherche Scientifique / French National Centre for Scientific Research

joyabrata mal

UNESCO-IHE Institute for Water Education

Francisco A Tomei Torres

Centers for Disease Control and Prevention

Malin Bomberg

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Microbial selenite reduction with organic carbon and electrode as sole electron donor by a bacterium isolated from domestic wastewater

by Khanh Nguyen Van and Taeho Lee

Strain THL1 can use organic or electrode as electron donor for Se(IV) reduction. Strain THL1 can ... more Strain THL1 can use organic or electrode as electron donor for Se(IV) reduction. Strain THL1 can remove 1 mM of Se (IV) within 3 d under heterotrophic condition. The Se(IV) reduction rate by electrotrophy was lower than that by heterotrophy. Strain THL1 was found to be affiliated with Cronobacter spp. g r a p h i c a l a b s t r a c t a b s t r a c t Selenium is said to be multifaceted element because it is essential at a low concentration but very toxic at an elevated level. For the purpose of screening a potential microorganism for selenite bioremediation, we isolated a bacterium, named strain THL1, which could perform both heterotrophic selenite reduction, using organic carbons such as acetate, lactate, propionate, and butyrate as electron donors under microaerobic condition, and electrotrophic selenite reduction, using an electrode polarized at À0.3 V (vs. standard hydrogen electrode) as the sole electron donor under anaerobic condition. This bacterium determined to be a new strain of the genus Cronobacter, could remove selenite with an efficiency of up to 100%. This study is the first demonstration on a pure culture could take up electrons from an electrode to perform selenite reduction. The selenium nanoparticles produced by microbial selenite reduction might be considered for recovery and use in the nanotechnology industry.

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Electricity generation and microbial community analysis of alcohol powered microbial fuel cells

by I. Angelidaki, Booki Min, and Taeho Lee

Bioresource Technology, 2007

Keywords: Biomass energy Microbial fuel cell Organic fraction of municipal solid waste 16S rRNA g... more Keywords: Biomass energy Microbial fuel cell Organic fraction of municipal solid waste 16S rRNA gene pyrosequencing a b s t r a c t The organic fraction of municipal solid waste (OFMSW), normally exceeding 60% of the waste stream in developing countries, could constitute a valuable source of feed for microbial fuel cells (MFCs). This study tested the start-up of two sets of OFMSW-fed aircathode MFCs inoculated with wastewater sludge or cattle manure. The maximum power density obtained was 123 AE 41 mW m À2 in the manure-seeded MFCs and 116 AE 29 mW m À2 in the wastewater-seeded MFCs. Coulombic efficiencies ranged between 24 AE 5% (manureseeded MFCs) and 23 AE 2% (wastewater-seeded MFCs). Chemical oxygen demand removal was >86% in all the MFCs and carbohydrate removal >98%. Microbial community analysis using 16S rRNA gene pyrosequencing demonstrated the dominance of the phylum Firmicutes (67%) on the anode suggesting the possible role of members of this phylum in electricity generation. Principal coordinate analysis showed that the microbial community structure in replicate MFCs converged regardless of the inoculum source. This study demonstrates efficient electricity production coupled with organic treatment in OFMSWfueled MFCs inoculated with manure or wastewater. ª ScienceDirect ht tp://www.elsevier.com/locate/biombioe b i o m a s s a n d b i o e n e r g y 6 7 ( 2 0 1 4 ) 2 4 e3 1 http://dx.

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Microbial selenite reduction with organic carbon and electrode as sole electron donor by a bacterium isolated from domestic wastewater

by Khanh Nguyen Van and Taeho Lee

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Electricity generation and microbial community analysis of alcohol powered microbial fuel cells

by I. Angelidaki, Booki Min, and Taeho Lee

Bioresource Technology, 2007

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