Optimisation on pretreatment of rubber seed (Hevea brasiliensis) oil via esterification reaction in a hydrodynamic cavitation reactor
Optimisation on pretreatment of rubber seed (Hevea brasiliensis) oil via esterification reaction in a hydrodynamic cavitation reactor
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DOI：
10.1016/j.biortech.2015.08.013
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发表时间：
2016-01-01
影响因子：
11.4
通讯作者：
Kamil, Ruzaimah Nik M.
中科院分区：
文献类型：
--
作者：
Bokhari, Awais;Chuah, Lai Fatt;Kamil, Ruzaimah Nik M.
使用中试规模的水力空化（HC）反应器研究了通过酯化反应对高游离脂肪酸橡胶籽油（RSO）进行预处理。研究了四种新设计的孔板几何形状。辅助双隔膜泵在 1-3.5 bar 入口压力范围内产生空腔。具有 21 个直径 1 mm 的孔和 3 bar 入口压力的优化板导致 RSO 酸值在 30 分钟的反应时间内从 72.36 mg KOH/g 降低至 2.64 mg KOH/g。采用响应面法对反应参数进行优化，发现甲醇与油的比例为6:1，催化剂浓度为8 wt%，反应时间为30 min，反应温度为55℃。与机械搅拌相比，HC的反应时间和酯化效率缩短了3倍，提高了4倍。这使得HC工艺更加环保。 (C) 2015 Elsevier Ltd. 保留所有权利。
Pretreatment of the high free fatty acid rubber seed oil (RSO) via esterification reaction has been investigated by using a pilot scale hydrodynamic cavitation (HC) reactor. Four newly designed orifice plate geometries are studied. Cavities are induced by assisted double diaphragm pump in the range of 1-3.5 bar inlet pressure. An optimised plate with 21 holes of 1 mm diameter and inlet pressure of 3 bar resulted in RSO acid value reduction from 72.36 to 2.64 mg KOH/g within 30 min of reaction time. Reaction parameters have been optimised by using response surface methodology and found as methanol to oil ratio of 6:1, catalyst concentration of 8 wt%, reaction time of 30 min and reaction temperature of 55 degrees C. The reaction time and esterified efficiency of HC was three fold shorter and four fold higher than mechanical stirring. This makes the HC process more environmental friendly. (C) 2015 Elsevier Ltd. All rights reserved.