| Title: | Influence of headspace composition on product diversity by sulphate reducing bacteria biocathode |
| Author(s): | Sharma M; Varanasi JL; Jain P; Dureja P; Lal B; Dominguez-Benetton X; Pant D; Sarma PM; |
| Address: | "TERI University, 10 Institutional Area, Vasant Kunj, New Delhi 110070, India; TERI, Darbari Seth Block, India Habitat Centre, New Delhi 110003, India; Separations and Conversion Technologies, VITO-Flemish Institute for Technological Research, Boeretang 200, 2400 Mol, Belgium. TERI, Darbari Seth Block, India Habitat Centre, New Delhi 110003, India. TERI University, 10 Institutional Area, Vasant Kunj, New Delhi 110070, India; TERI, Darbari Seth Block, India Habitat Centre, New Delhi 110003, India. Separations and Conversion Technologies, VITO-Flemish Institute for Technological Research, Boeretang 200, 2400 Mol, Belgium. TERI University, 10 Institutional Area, Vasant Kunj, New Delhi 110070, India; TERI, Darbari Seth Block, India Habitat Centre, New Delhi 110003, India. Electronic address: priyanms@teri.res.in" |
| DOI: | 10.1016/j.biortech.2014.03.075 |
| ISSN/ISBN: | 1873-2976 (Electronic) 0960-8524 (Linking) |
| Abstract: | "Mixed culture of sulphate reducing bacteria named TERI-MS-003 was used for development of biocathode on activated carbon fabric fastened to stainless steel mesh for conversion of volatile fatty acids to reduced organic compounds under chronoamperometric conditions of -0.85V vs. Ag/AgCl (3.5M KCl). A range of chemicals were bioelectrosynthesized, however the gases present in headspace environment of the bioelectrochemical reactor governed the product profile. Succinate, ethanol, hydrogen, glycerol and propionate were observed to be the predominant products when the reactor was hermetically sealed. On the other hand, acetone, propionate, isopropanol, propanol, isobutyrate, isovalerate and heptanoate were the predominant products when the reactor was continuously sparged with nitrogen. This study highlights the importance of head space composition in order to manoeuvre the final product profile desired during a microbial electro-synthesis operation and the need for simultaneously developing effective separation and recovery strategies from an economical and practical standpoint" |
| Keywords: | Bacteria/*metabolism Bioreactors/microbiology Electrochemical Techniques Electrodes Hydrogen/metabolism Hydrogen-Ion Concentration Sulfates/*metabolism Activated carbon fabric (ACF) Biocathode Direct electron transfer (DET) Microbial electrosynthesis (MES; |
| Notes: | "MedlineSharma, Mohita Varanasi, Jhansi L Jain, Pratiksha Dureja, Prem Lal, Banwari Dominguez-Benetton, Xochitl Pant, Deepak Sarma, Priyangshu M eng Research Support, Non-U.S. Gov't England 2014/04/15 Bioresour Technol. 2014 Aug; 165:365-71. doi: 10.1016/j.biortech.2014.03.075. Epub 2014 Mar 27" |
