In-situ (trans)esterification of lipid-dense post-hydrolysis rice bran at ambient pressures with low acid loading

2021 ◽  
Vol 155 ◽  
pp. 106300
Author(s):  
Alchris Woo Go ◽  
Kristelle L. Quijote ◽  
Chintya Gunarto ◽  
Yi-Hsu Ju ◽  
Artik Elisa Angkawijaya ◽  
...  
Keyword(s):  
Biofuels ◽  
2017 ◽  
Vol 11 (2) ◽  
pp. 221-227 ◽  
Author(s):  
Sylviana Sutanto ◽  
Alchris Woo Go ◽  
Suryadi Ismadji ◽  
Yi-Hsu Ju

2018 ◽  
Vol 120 ◽  
pp. 140-146 ◽  
Author(s):  
Nakyung Choi ◽  
Da Som No ◽  
Heejin Kim ◽  
Byung Hee Kim ◽  
Jieun Kwak ◽  
...  

2019 ◽  
Vol 964 ◽  
pp. 97-102
Author(s):  
Siti Zullaikah ◽  
Sri Utami ◽  
Rifky Putra Herminanto ◽  
M. Rachimoellah

In-situ transesterification method without catalysts to produce biodiesel (fatty acid ethyl esters, FAEE) from rice bran using subcritical water ethanol mixture has been investigated. This method was found to be efficient since the rice bran oil (RBO) extraction and reaction of RBO into FAEE occur simultaneously. In this process other chemical (ethyl levulinate, EL) was also formed along with FAEE. EL can be used to improve the biodiesel quality by improving the low temperature properties of biodiesel. In this study effect of co-solvent types (without co-solvent, ethyl acetate, chloroform, and n-hexane) and water ethanol ratio (20%, 40%, 50%, 60% and 80%, v/v) on the content and yield of FAEE and EL at subcritical water ethanol mixture (T= 160°C, P= 80 bar, and t= 2 h) were investigated systematically. The content and yield of FAEE and EL obtained was found to be affected by the type of co-solvent. The content of FAEE and EL obtained without co-solvent (ethanol and water polarity index were PI=5.2 and PI=10.2, respectively) and with co-solvent of ethyl acetate (PI= 4.4), chloroform (PI= 4.1) and n-hexane (PI= 0.1) were 55.80% and 3.92%, 68.63% and 1.15%, 65.56% and 2.14%, and 62.00% and 0.93%, respectively. Higher polarity index of co-solvent extracted more RBO, as consequent the yield of FAEE (79.79%) obtained was higher using ethyl acetate as co-solvent. This data also suggested that RBO contains more free fatty acids (FFA= 63.59%) rather than of triglycerides (TG= 24.94%).The content and yield of FAEE and EL decreased with increasing water ethanol ratio. The highest content of FAEE (60.57%) and EL (8.48%) and yield of FAEE (78.03%) and EL (10.92%) were obtained using water ethanol ratio of 20%, v/v.


2019 ◽  
Vol 964 ◽  
pp. 234-239
Author(s):  
Siti Zullaikah ◽  
Sri Utami ◽  
Rifky Putra Herminanto ◽  
M. Rachimoellah

In-situ transesterification method without catalysts to produce biodiesel (fatty acid ethyl esters, FAEE) from rice bran using subcritical water ethanol mixture has been investigated. This method was found to be efficient since the rice bran oil (RBO) extraction and reaction of RBO into FAEE occur simultaneously. In this process other chemical (ethyl levulinate, EL) was also formed along with FAEE. EL can be used to improve the biodiesel quality by improving the low temperature properties of biodiesel. In this study effect of co-solvent types (without co-solvent, ethyl acetate, chloroform, and n-hexane) and water ethanol ratio (20%, 40%, 50%, 60% and 80%, v/v) on the content and yield of FAEE and EL at subcritical water ethanol mixture (T= 160°C, P= 80 bar, and t= 2 h) were investigated systematically. The content and yield of FAEE and EL obtained was found to be affected by the type of co-solvent. The content of FAEE and EL obtained without co-solvent (ethanol and water polarity index were PI=5.2 and PI=10.2, respectively) and with co-solvent of ethyl acetate (PI= 4.4), chloroform (PI= 4.1) and n-hexane (PI= 0.1) were 55.80% and 3.92%, 68.63% and 1.15%, 65.56% and 2.14%, and 62.00% and 0.93%, respectively. Higher polarity index of co-solvent extracted more RBO, as consequent the yield of FAEE (79.79%) obtained was higher using ethyl acetate as co-solvent. This data also suggested that RBO contains more free fatty acids (FFA= 63.59%) rather than of triglycerides (TG= 24.94%). The content and yield of FAEE and EL decreased with increasing water ethanol ratio. The highest content of FAEE (60.57%) and EL (8.48%) and yield of FAEE (78.03%) and EL (10.92%) were obtained using water ethanol ratio of 20%, v/v.


Fuel ◽  
2011 ◽  
Vol 90 (2) ◽  
pp. 592-597 ◽  
Author(s):  
Hong Lei ◽  
Xuefeng Ding ◽  
Jingzhe Zhao ◽  
Hongxi Zhang ◽  
Yunling Li ◽  
...  

Fuel ◽  
2010 ◽  
Vol 89 (7) ◽  
pp. 1475-1479 ◽  
Author(s):  
Hong Lei ◽  
Xuefeng Ding ◽  
Hongxi Zhang ◽  
Xue Chen ◽  
Yunling Li ◽  
...  

2010 ◽  
Vol 101 (3) ◽  
pp. 984-989 ◽  
Author(s):  
Pei-Jing Shiu ◽  
Setiyo Gunawan ◽  
Wen-Hao Hsieh ◽  
Novy S. Kasim ◽  
Yi-Hsu Ju

Sign in / Sign up

Export Citation Format

Share Document