DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Mi-Sun | ko |
dc.contributor.author | Moon, Chungman | ko |
dc.contributor.author | Kang, Seoktae | ko |
dc.contributor.author | Kim, Dong-Hoon | ko |
dc.date.accessioned | 2018-01-22T02:06:18Z | - |
dc.date.available | 2018-01-22T02:06:18Z | - |
dc.date.created | 2017-08-28 | - |
dc.date.created | 2017-08-28 | - |
dc.date.created | 2017-08-28 | - |
dc.date.created | 2017-08-28 | - |
dc.date.issued | 2017-11 | - |
dc.identifier.citation | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.42, no.45, pp.27767 - 27773 | - |
dc.identifier.issn | 0360-3199 | - |
dc.identifier.uri | http://hdl.handle.net/10203/237196 | - |
dc.description.abstract | To investigate the characteristics of hydrogenotrophic methanogenic (HM, 4H2 + CO2 → CH4 + 2H2O) mixed cultures, continuous stirred-tank reactors (CSTRs) were operated at various H2 loading rates (HLR, 2.8–14.0 m3 H2/m3/d) and hydraulic retention times (HRTs, 5–30 d). The feeding gas was composed of H2/CO2 (80:20 on volume basis), and HRT was controlled by the continuous pumping of a nutrient medium. At a fixed HLR of 4 kg COD/m3/d (1 kg COD = 1.4 m3 H2), complete H2 conversion to CH4 (> 98% on a COD basis) was observed up to the HRT decrease to 6 d. However, at HRT 5 d, the H2 conversion gradually decreased, reaching 30% within 30 d, and the H2 content in the head space increased to 70%, which triggered the production of acetate with an increased concentration to 3 g COD/L. When the HLR was increased at a fixed HRT of 10 d, the maximum CH4 production rate of 2.75 m3 CH4/m3/d was achieved at 8 kg COD/m3/d. A kinetic analysis conducted using the Monod equation showed that HM cultures had a maximum specific growth rate of 0.18 d−1 and a half-saturation coefficient of 1.73 g COD/L. Though, successful hydrogenotrophic CH4 conversion was achieved, the broth contained soluble microbial products (SMPs) at a concentration of 80–250 mg/L, which exceeded the effluent regulation standard. Most of the organic matters in SMPs consisted of humic-like and fulvic-like organic matters with a low molecular weight (<1 kDa). | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Continuous performance of hydrogenotrophic methanogenic mixed cultures: Kinetic and SMP analysis | - |
dc.type | Article | - |
dc.identifier.wosid | 000416191500035 | - |
dc.identifier.scopusid | 2-s2.0-85025137446 | - |
dc.type.rims | ART | - |
dc.citation.volume | 42 | - |
dc.citation.issue | 45 | - |
dc.citation.beginningpage | 27767 | - |
dc.citation.endingpage | 27773 | - |
dc.citation.publicationname | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | - |
dc.identifier.doi | 10.1016/j.ijhydene.2017.07.022 | - |
dc.contributor.localauthor | Kang, Seoktae | - |
dc.contributor.nonIdAuthor | Kim, Mi-Sun | - |
dc.contributor.nonIdAuthor | Moon, Chungman | - |
dc.contributor.nonIdAuthor | Kim, Dong-Hoon | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article; Proceedings Paper | - |
dc.subject.keywordAuthor | Hydrogenotrophic methane conversion | - |
dc.subject.keywordAuthor | Continuous stirred-tank reactor | - |
dc.subject.keywordAuthor | Kinetic analysis | - |
dc.subject.keywordAuthor | Soluble microbial products | - |
dc.subject.keywordAuthor | Excitation-emission matrix | - |
dc.subject.keywordPlus | SOLUBLE MICROBIAL PRODUCTS | - |
dc.subject.keywordPlus | METHANE PRODUCTION | - |
dc.subject.keywordPlus | RETENTION TIME | - |
dc.subject.keywordPlus | DIGESTION | - |
dc.subject.keywordPlus | REACTORS | - |
dc.subject.keywordPlus | SEDIMENT | - |
dc.subject.keywordPlus | SYSTEMS | - |
dc.subject.keywordPlus | H-2/CO2 | - |
dc.subject.keywordPlus | BIOGAS | - |
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