Chang, IS Kim, BH Lovitt, RW Bang, JS 2024-01-21T11:14:39Z 2024-01-21T11:14:39Z 2021-09-05 2001-12-10 1359-5113 https://pubs.kist.re.kr/handle/201004/139916 Eubacterium limosum KIST612 was cultivated on carbon monoxide using a cell-recycled continuous fermentation system to produce organic acids. A bubble column reactor system (k(L)a = 72 h(-1)) was used with a membrane to allow on-line products removal with cell recycle. When cell concentration reached 5.25 g l(-1) in the reactor, the cell concentration did not increase at carbon monoxide (CO) partial pressures lower than 74 kPa though CO was consumed with the acidic products formation. At this stage, the overall CO mass transfer rate (k(L)a[C* - C-L]) was lower than required for the maximum cell growth (q(CO)(X)(max) but higher than that to meet the maintenance requirement (m(s)X). When the CO mass transfer rate was maintained higher than maintenance requirement by increasing CO partial pressure, the cell concentration increased to 9.5 g l(-1). (C) 2001 Elsevier Science Ltd. All rights reserved. English ELSEVIER SCI LTD SYNTHESIS GAS CARBON-MONOXIDE MAINTENANCE ENERGY GROWTH BIOCONVERSION Effect of CO partial pressure on cell-recycled continuous CO fermentation by Eubacterium limosum KIST612 Article 10.1016/S0032-9592(01)00227-8 1 PROCESS BIOCHEMISTRY, v.37, no.4, pp.411 - 421 PROCESS BIOCHEMISTRY 37 4 411 421 scie scopus 000172638500012 2-s2.0-0035186610 Biochemistry & Molecular Biology Biotechnology & Applied Microbiology Engineering, Chemical Biochemistry & Molecular Biology Biotechnology & Applied Microbiology Engineering Article SYNTHESIS GAS CARBON-MONOXIDE MAINTENANCE ENERGY GROWTH BIOCONVERSION acetogen Eubacterium limosum carbon monoxide synthesis-gas mass transfer limitation organic acid