Biodiesel production from waste cooking oil using calcined scallop shell as catalyst
Biodiesel production from waste cooking oil using calcined scallop shell as catalyst
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DOI：
10.1016/j.enconman.2015.02.044
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发表时间：
2015-05
影响因子：
10.4
通讯作者：
Suchada Sirisomboonchai;Maidinamu Abuduwayiti;G. Guan;Chanatip Samart;S. Abliz;Xiaogang Hao;K. Kusakabe-K.
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文献类型：
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作者：
Suchada Sirisomboonchai;Maidinamu Abuduwayiti;G. Guan;Chanatip Samart;S. Abliz;Xiaogang Hao;K. Kusakabe-K.
以煅烧扇贝壳（CSS）为催化剂，在密闭系统中进行了废食用油（WCO）与甲醇的酯交换反应，用于生产生物柴油（BDF）。结果表明，制备CSS的最佳煅烧温度为1000℃。考察了酯交换温度、反应时间、醇油摩尔比和催化剂用量对BDF收率的影响。与商用CaO相比，CSS具有更高的催化活性，在65℃条件下，催化剂负载量为5 wt% （WCO基），反应时间为2 h， BDF收率达到86%。催化剂重复使用5次，BDF收率下降23%。发现CSS中的CaO经过酯交换反应后转化为甘油氧化钙，且甘油氧化钙也表现出良好的催化活性和可重复使用性。WCO中水分含量对BDF产量有负向影响。当水含量由0.64%增加到2.48%时，由于发生了皂化反应，BDF产率降低了15%。CCS有望成为生产生物柴油的廉价催化剂。
Transesterification of waste cooking oil (WCO) and methanol by using calcined scallop shell (CSS) as catalyst was carried out in a closed system for biodiesel fuel (BDF) production. It is found that the optimum calcination temperature for the preparation of CSS was 1000 °C. The effects of transesterification temperature, reaction time, methanol/oil molar ratio and catalyst loading amount on the BDF yield were investigated. Compared with the commercial CaO, CSS showed higher catalytic activity and the BDF yield reached 86% at 65 °C with a catalyst loading amount of 5 wt% (WCO basis) and a reaction time of 2 h. The catalyst was reused for 5 cycles whilst the BDF yield decreased 23%. It is found that CaO in CSS was transferred to calcium glyceroxide after the transesterification reaction, and calcium glyceroxide also showed good catalytic activity and reusability. Furthermore, Water content in WCO had negative effect on BDF yield. It is found that BDF yield reduced 15% due to the occurring of saponification when the water content was increased from 0.64% to 2.48%. It is expected that CCS can be used as an alternative and cheap catalyst for the biodiesel production.