Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김현중 | - |
dc.date.accessioned | 2022-03-29T05:56:40Z | - |
dc.date.available | 2022-03-29T05:56:40Z | - |
dc.date.issued | 2020-07 | - |
dc.identifier.citation | BIORESOURCE TECHNOLOGY, v. 307, article no. 123181 | en_US |
dc.identifier.issn | 0960-8524 | - |
dc.identifier.issn | 1873-2976 | - |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S0960852420304521?via%3Dihub | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/169496 | - |
dc.description.abstract | The bioleaching of chalcopyrite concentrate, intensified by the adapted mesophilic culture in the continuous stirred tank reactors (CSTR) was investigated. The cumulative bioleaching efficiency of copper was found to be increased from 34.8% to 49.3% in CSTR-1, 40.3% to 71.2% in CSTR-2, and 44.3% to 73.8% in CSTR-3, while the temperature was elevated from 30 to 37 °C, respectively; whereas, the pulp density (10%, w/v), agitation speed (350 rpm), aeration (400 cc/min), and retention time (7 days across the three reactors) were also optimized to keep constant. Further, the activation energy calculated for copper dissolution under the continuous flow indicated that the surface-diffusion was the overall rate-limiting step for the bioleaching process. Instrumental analysis of solid samples could reveal the degradation pathways of chalcopyrite bioleaching as: CuFeS2 → Cu2S → Cu0.3333Fe0.6667S → H9Fe3O18S8. It follows a complex mechanism that includes the occurrence of polysulfide and cooperative mechanism along with the passivation onto mineral surfaces. | en_US |
dc.description.sponsorship | The work was supported by Brain Pool program funded by the Ministry of Science and ICT through the National Research Foundation of Korea (2019H1D3A2A02101993), the Korea-Slovakia International Research Cooperation Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (MSIT) (NRF-2018K1A3A1A39071898), and the Korea Energy and Mineral Resources Engineering Program (KEMREP). | en_US |
dc.language.iso | en | en_US |
dc.publisher | ELSEVIER SCI LTD | en_US |
dc.subject | Chalcopyrite | en_US |
dc.subject | Microbial intensified leaching | en_US |
dc.subject | Continuous stirred tank reactors | en_US |
dc.subject | Mesophilic consortia | en_US |
dc.subject | Bioleaching mechanism | en_US |
dc.subject | Rate-limiting step | en_US |
dc.title | Intensified bioleaching of chalcopyrite concentrate using adapted mesophilic culture in continuous stirred tank reactors | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1016/j.biortech.2020.123181 | - |
dc.relation.journal | BIORESOURCE TECHNOLOGY | - |
dc.contributor.googleauthor | You, Junhyuk | - |
dc.contributor.googleauthor | Solongo, Stephen Kayombo | - |
dc.contributor.googleauthor | Gomez-Flores, Allan | - |
dc.contributor.googleauthor | Choi, Sowon | - |
dc.contributor.googleauthor | Zhao, Hongbo | - |
dc.contributor.googleauthor | Urik, Martin | - |
dc.contributor.googleauthor | Ilyas, Sadia | - |
dc.contributor.googleauthor | Kim, Hyunjung | - |
dc.relation.code | 2020054116 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING | - |
dc.identifier.pid | kshjkim | - |
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