EFFICIENCY OF MICROBIAL FUEL CELLS BASED ON THE SULPHATE-REDUCTION BY ETHANOL
ABSTRACT. The influence of hydraulic retention time (HRT) on the rate of sulphate–reduction and electricity generation of microbial fuel cell fed with ethanol was studied. The experiments were performed in the laboratory installation, consisting of an anaerobic fixed–bed reactor and a microbial fuel...
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| Format: | Article |
| Language: | English |
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University of Mining and Geology “St. Ivan Rilski”
2020-11-01
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| Series: | Sustainable Extraction and Processing of Raw Materials Journal |
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| Online Access: | https://seprm.com/wp-content/uploads/2020/11/Bratkova-S.-Z.-Alexieva-A.-Angelov-K.-Nikolova-P.-Genova-R.-Ivanov-M.-Gerginova-N.Peneva.-Efficiency-of-microbial-fuel-cells-based-on-the-sulphate-reduction-by-ethanol.pdf |
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| author | Svetlana Bratkova Zlatka Alexieva Anatoliy Angelov Katerina Nikolova Petia Genova Rosen Ivanov Maria Gerginova Nadejda Peneva |
| author_facet | Svetlana Bratkova Zlatka Alexieva Anatoliy Angelov Katerina Nikolova Petia Genova Rosen Ivanov Maria Gerginova Nadejda Peneva |
| author_sort | Svetlana Bratkova |
| collection | DOAJ |
| description | ABSTRACT. The influence of hydraulic retention time (HRT) on the rate of sulphate–reduction and electricity generation of microbial fuel cell fed with ethanol was studied. The experiments were performed in the laboratory installation, consisting of an anaerobic fixed–bed reactor and a microbial fuel cell with air–cathode. An effective sulphate removal was achieved at hydraulic retention times 44 and 66 h. The effectiveness of COD removal raises with increasing the hydraulic retention time. The highest maximum power density of 258 mW/m2 was obtained at 22 h HRT. The use of ethanol as an electron donor had a great impact on the composition of the microbial community. The metagenomic data obtained showed that the most abundant phylum in bacterial community was Proteobacteria – 87.8 %, and particularly Gammaproteobacteria – 53,1%. The sulphate reducing bacteria that can incompletely oxidise organic compounds usually with acetate as an end product were presented in the microbial community in anodic chamber. The dominant microbial species among sulphate reducing bacteria was Desulfomicrobium mexicanus (19,79%). |
| first_indexed | 2024-04-12T07:03:08Z |
| format | Article |
| id | doaj.art-eab99e3746b843bbb7c7f98f29855d5d |
| institution | Directory Open Access Journal |
| issn | 2738-7100 2738-7151 |
| language | English |
| last_indexed | 2024-04-12T07:03:08Z |
| publishDate | 2020-11-01 |
| publisher | University of Mining and Geology “St. Ivan Rilski” |
| record_format | Article |
| series | Sustainable Extraction and Processing of Raw Materials Journal |
| spelling | doaj.art-eab99e3746b843bbb7c7f98f29855d5d2022-12-22T03:42:57ZengUniversity of Mining and Geology “St. Ivan Rilski”Sustainable Extraction and Processing of Raw Materials Journal2738-71002738-71512020-11-0111212610.5281/zenodo.4270025EFFICIENCY OF MICROBIAL FUEL CELLS BASED ON THE SULPHATE-REDUCTION BY ETHANOLSvetlana Bratkova0Zlatka Alexieva1Anatoliy Angelov2Katerina Nikolova3Petia Genova4Rosen Ivanov5Maria Gerginova6Nadejda Peneva7University of Mining and Geology “St. Ivan Rilski”, 1700 Sofia, BulgariaInstitute of Microbiology, Bulgarian Academy of Sciences, 1113 SofiaUniversity of Mining and Geology “St. Ivan Rilski”, 1700 Sofia, BulgariaUniversity of Mining and Geology “St. Ivan Rilski”, 1700 Sofia, BulgariaUniversity of Mining and Geology “St. Ivan Rilski”, 1700 Sofia, BulgariaUniversity of Mining and Geology “St. Ivan Rilski”, 1700 Sofia, BulgariaInstitute of Microbiology, Bulgarian Academy of Sciences, 1113 SofiaInstitute of Microbiology, Bulgarian Academy of Sciences, 1113 SofiaABSTRACT. The influence of hydraulic retention time (HRT) on the rate of sulphate–reduction and electricity generation of microbial fuel cell fed with ethanol was studied. The experiments were performed in the laboratory installation, consisting of an anaerobic fixed–bed reactor and a microbial fuel cell with air–cathode. An effective sulphate removal was achieved at hydraulic retention times 44 and 66 h. The effectiveness of COD removal raises with increasing the hydraulic retention time. The highest maximum power density of 258 mW/m2 was obtained at 22 h HRT. The use of ethanol as an electron donor had a great impact on the composition of the microbial community. The metagenomic data obtained showed that the most abundant phylum in bacterial community was Proteobacteria – 87.8 %, and particularly Gammaproteobacteria – 53,1%. The sulphate reducing bacteria that can incompletely oxidise organic compounds usually with acetate as an end product were presented in the microbial community in anodic chamber. The dominant microbial species among sulphate reducing bacteria was Desulfomicrobium mexicanus (19,79%).https://seprm.com/wp-content/uploads/2020/11/Bratkova-S.-Z.-Alexieva-A.-Angelov-K.-Nikolova-P.-Genova-R.-Ivanov-M.-Gerginova-N.Peneva.-Efficiency-of-microbial-fuel-cells-based-on-the-sulphate-reduction-by-ethanol.pdfmicrobial fuel cell |
| spellingShingle | Svetlana Bratkova Zlatka Alexieva Anatoliy Angelov Katerina Nikolova Petia Genova Rosen Ivanov Maria Gerginova Nadejda Peneva EFFICIENCY OF MICROBIAL FUEL CELLS BASED ON THE SULPHATE-REDUCTION BY ETHANOL Sustainable Extraction and Processing of Raw Materials Journal microbial fuel cell |
| title | EFFICIENCY OF MICROBIAL FUEL CELLS BASED ON THE SULPHATE-REDUCTION BY ETHANOL |
| title_full | EFFICIENCY OF MICROBIAL FUEL CELLS BASED ON THE SULPHATE-REDUCTION BY ETHANOL |
| title_fullStr | EFFICIENCY OF MICROBIAL FUEL CELLS BASED ON THE SULPHATE-REDUCTION BY ETHANOL |
| title_full_unstemmed | EFFICIENCY OF MICROBIAL FUEL CELLS BASED ON THE SULPHATE-REDUCTION BY ETHANOL |
| title_short | EFFICIENCY OF MICROBIAL FUEL CELLS BASED ON THE SULPHATE-REDUCTION BY ETHANOL |
| title_sort | efficiency of microbial fuel cells based on the sulphate reduction by ethanol |
| topic | microbial fuel cell |
| url | https://seprm.com/wp-content/uploads/2020/11/Bratkova-S.-Z.-Alexieva-A.-Angelov-K.-Nikolova-P.-Genova-R.-Ivanov-M.-Gerginova-N.Peneva.-Efficiency-of-microbial-fuel-cells-based-on-the-sulphate-reduction-by-ethanol.pdf |
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