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金相烈,紫田慶治,太田口和久,小出耕造 동아대학교 공과대학 부설 한국자원개발연구소 1991 硏究報告 Vol.15 No.1
We studied the effects of properties of the liquids and the gel particles, gas velocity and column dimensions on the gas holdup and the volumetric liquid-phase mass transfer coefficient in a gel suspended bubble column with a draught tube experimentally in a liquid-solid batch operation. The values of ε_(G) and k_(L)a were decreased with increasing concentration of gel particles and were not related to the size of gel particles. Based on these investigations, estimated equations for ε_(G) and k_(L)a that can be applied in columns with diameter 0.08∼0.14 m are proposed.
Anondho Wijanarko,Dianursanti,Antonius Yudi Sendjaya,Heri Hermansyah,Arief Budi Witarto,Misri Gozan,Bondan Tiara Sofyan,Kazuhiro Asami,Kazuhisa Ohtaguchi,Roekmijati Widaningroem Soemantojo,송승구 한국생물공학회 2008 Biotechnology and Bioprocess Engineering Vol.13 No.4
Microalgae perform oxygenic photosynthesis and are capable of taking up a large amount of CO₂, using an inducible CO₂ concentrating mechanism (CCM), and fixing CO₂ into higher compounds. These characteristics make the microalgae potentially useful for removal and utilization of CO₂ emitted from industrial plants and, generally, the usage of photosynthetic microorganisms has increased and significantly improved as a solution for CO₂ emissions. In this light and based on previous research using Anabaena cylindrica IAM M1 and Spirulina platensis IAM M 135, enhancement was sought for CO₂fixation and biomass production by Chlorella vulgaris Buitenzorg by increasing the photon flux density concurrent with increases in culture biomass during the cellular growth phase and was compared to cultures of Chlorella grown at optimal constant illumination, with all cultures grown using Bennick basal medium, 29℃, and a flow of 1.0 atm. 10% CO₂ enriched air delivered to three in serial photobioreactors of 0.200 dm³capacity each. The results showed that increasing illumination during culture increased biomass production of Chlorella by ~60% as well as increased CO₂ fixation ability by ~7.0%. It was also demonstrated that the non-competitive inhibition of [HCO₃-] as a carbon source significantly affected the cultivation in both the increasing and constant photon flux density regimes.