Economic assessment of batch biodiesel production processes using homogeneous and heterogeneous alkali catalysts |
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Authors: | Tsutomu Sakai Ayato Kawashima Tetsuya Koshikawa |
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Institution: | 1. Environment and Chemical Process Research Laboratory, KRI Inc., Kyoto Research Park, 134 Chudoji Minami-machi, Shimogyo-ku, Kyoto 600-8813, Japan;2. Environmental Science for Industry, Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan;3. Revo International Inc., 11 Hiroosa-cho, Shimotoba, Fushimi-ku, Kyoto 612-8473, Japan |
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Abstract: | An economic feasibility study on four batch processes for the production of biodiesel ranging from 1452 tonnes/year (5000 l/day) to 14,520 tonnes/year (50,000 l/day) is conducted. The four processes assessed are the (1) KOH-W process, characterized by a homogeneous KOH catalyst and hot water purification process; (2) KOH-D process, characterized by a homogeneous KOH catalyst and vacuum FAME distillation process; (3) CaO-W process, characterized by a heterogeneous CaO catalyst and hot water purification process; and (4) CaO-D process, characterized by a heterogeneous CaO catalyst and vacuum FAME distillation process. The costs of the waste cooking oil, fixed costs, and manufacturing costs for producing 7260 tonnes/year (25,000 l/day) of biodiesel by means of the four processes are estimated to be $248–256, $194–232, and $584–641 per tonne of biodiesel, respectively. Among the four processes, the manufacturing costs involved in the CaO-W process are the lowest, in the range from 1452 tonnes/year to 14,520 tonnes/year. |
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Keywords: | Biodiesel Heterogeneous catalyst Calcium oxide Manufacturing cost Feasibility study |
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