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Biodiesel production by direct-transesterification from Dunaliella sp. biomass
심상혁,류영진,임상민,이철균 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
World crude oil reserve is becoming depleted and it was reported that petro-oil production will be sharply decreased from 2015 but more than half of worldwide energy consumption still depends on petroleum and natural gas. The most expected solution for global energy problems is renewable energies among them biodiesel is one of the best alternatives of petro fuel and microalgae are potentially powerful source to produce lipid, the raw material of biodiesel. To make biodiesel efficiently from microalgae, development of good transesterification method is important. Generally, biodiesel production method is composed of two steps process, lipid extracting from biomass is first step and transesterification from extracted lipid to biodiesel is second step. The process skipping lipid extraction step has advantage to reduce unit operations. Dunaliella species belonging to microalgae are known as massive lipid producers. This is a report on the direct transesterification from whole cell of Dunaliella sp. without previous lipid extraction. The biodiesel was successfully produced from whole cell of Dunaliella sp. by direct transesterification and the production yield of biodiesel was fairly good.
Biodiesel production by direct-transesterification from dunaliella tertiolecta LB999 biomass
심상혁,류영진,임상민,이철균 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
World crude oil reserves will be depleted eventually, but, more than half of world energy consumption still depends on petroleum and natural gas. One of the potential solutions for the global energy problem is biodiesel from microalgae. Generally, biodiesel production process includes two steps: lipid extraction from biomass and transesterification of the extracted lipid. The direct-transesterification combines the twostep operations into one by using the raw biomass for transesterification without lipid extraction process. A green microalga, Dunaliella tertiolecta LB999, is known as a massive lipid producer. Biodiesel production via direct-transesterification using the biomass of D. tertiolecta was investigated. The lipids in the biomass were successfully converted into biodiesel, and the yield of direct-transesterification was 99.2%. As larger quantity of solvent is used in the direct-transesterification process than in the conventional two-step process, reusing methods for the solvent will be developed as the further study.
까스크로마토그라피에 依한 抗히스타민劑의 分析化學的 硏究
심상혁 德成女子大學校 1974 德成女大論文集 Vol.3 No.-
The gas chromatographic behavior fo three antkhistamines Chloropheniramine, Diphenhydramine , Tripelennamine and their salts were investigated using alkaline precolumn packed with 20% KOH on 60-80 mesh activated alumina. Symmetrical peaks were achieved under the condition, inlet temperature 260℃, cooumn temerature 180℃, carrier gas flow rate 30㎖/min. The peaks of antihistamine salts coincided with those of bases in alcohol solution. Chromatographic peaks of many drugs of organic bases, vitamines and antipyretics were Substracted by the precolumn.