Intensification of biodiesel production using dual-frequency counter-current pulsed ultrasound

被引:22
作者
Yin, Xiulian [1 ,2 ,3 ]
Zhang, Xuejuan [1 ]
Wan, Miaomiao [1 ]
Duan, Xiuli [1 ]
You, Qinghong [3 ,4 ,5 ]
Zhang, Jinfeng [1 ]
Li, Songlin [1 ]
机构
[1] Huaiyin Inst Technol, Sch Life Sci & Food Engn, Huaian 223003, Jiangsu, Peoples R China
[2] Nanjin Forestry Univ, Jiangsu Key Lab Biomass Based Green Fuels & Chem, Nanjing 210037, Jiangsu, Peoples R China
[3] Huaiyin Inst Technol, Jiangsu Prov Engn Lab Biomass Convers & Proc Inte, Huaian 223003, Peoples R China
[4] Huaiyin Inst Technol, Key Lab Med Exploitat & Utilizat Reg Resources, Huaian 223003, Jiangsu, Peoples R China
[5] Huaiyin Inst Technol, Jiangsu Prov Key Lab Palygorskite Sci & Appl Tech, Huaian 223003, Peoples R China
关键词
Biodiesel; Soybean oil deodorizer distillate; Dual-frequency counter-current pulsed; ultrasound; Kinetic; OIL DEODORIZER DISTILLATE; FATTY-ACID DISTILLATE; ASSISTED SYNTHESIS; CATALYST; TRANSESTERIFICATION; OPTIMIZATION;
D O I
10.1016/j.ultsonch.2016.12.036
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
Biodiesel production from soybean oil deodorizer distillate intensified by dual-frequency counter-current pulsed ultrasound and the kinetics were studied. Results indicated that the biodiesel conversions enhanced by single-frequency were lower than those enhanced by dual-frequency. For dual-frequency, the biodiesel conversion of SMM was higher than those of SQM. The biodiesel conversion of the combination of 20/28 kHz is the highest. The effects of 20/28 kHz SMM on biodiesel production were studied and optimal conditions were: methanol to triglyceride molar ratio 8:1, catalyst content 1.8%, the water content in feedstock should be less than 0.4%, the acid value of feedstock should be less than 2 mgKOH.g(-1), the biodiesel conversion could reach 96.3%. The kinetics of SMM and SSPU were studied and results showed that the transesterification reaction was pseudo-second order and the energy activation obtained by SMM and SSPU were 18.122 kJ.mol(-1) and 26.034 kJ.mol(-1), respectively. These results showed that transesterification reaction intensified by SMM is easier to take place than SSPU. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:136 / 143
页数:8
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