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| Preparation of biodiesel from Chlorella by in-situ catalysis with amino acid ionic liquids |
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| DOI： |
| KeyWord:amino acid ionic liquid Chlorella in-situ method biodiesel transesterification |
| FundProject:云南省万人计划产业技术领军人才项目(20191096)；云南省基础研究计划(202001AT070094)；云南省国际科技合作专项(202003AF140001)；云南省基础研究专项青年项目（202201AU070058）；云南省教育厅科学研究基金项目（2022J0127）；昆明市国际（对外）科技合作基地(GHJD-2020026)以及云南省劳模创新工作室和云南省农村能源工程重点实验室基金联合资助 |
| Author Name | Affiliation | | WANG Zhishan1, SUN Ruihan1, WANG Changmei1,2, ZHANG Wudi1,2,
YIN Fang1,2, YANG Bin1,2, LIU Jing1,2, YANG Hong1,2 | 1.School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
2.Yunnan Provincial Biogas Engineering Technology Research Center, Kunming 650500, China |
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| Abstract: |
| To explore the in-situ catalytic preparation of biodiesel from Chlorella using environmentally friendly and efficient catalysts, amino acid ionic liquids were synthesized by reacting five amino acids (glycine, aspartic acid, L-glutamic acid, L-lysine and L-proline) with hydrochloric acid and potassium hydroxide, respectively. The amino acid ionic liquids were used as extraction agents and catalysts for the in-situ catalytic preparation of biodiesel from Chlorella. The reaction conditions were optimized using single factor experiments. The results showed that the amino acid ionic liquid \[L-Pro\]\[Cl\] synthesized by the reaction of L-proline with hydrochloric acid had better biodiesel extraction rate and catalysis rate. The optimal preparation conditions for Chlorella biodiesel were as follows: dosage of \[L-Pro\]\[Cl\] 100%(based on the mass of Chlorella powder), mass ratio of methanol to Chlorella powder 11∶ 1, reaction temperature 65 ℃, and reaction time 18 h. Under these conditions, the extraction rate of biodiesel was 83.16%, and the catalysis rate was 64.54%. In summary, the amino acid ionic liquid \[L-Pro\]\[Cl\] is suitable for in-situ catalytic preparation of biodiesel from Chlorella. |
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