scholarly journals Naganishia cerealis IN1S2.5 oil production from the hydrolysate of NaOH-impregnated and catalyst steam explosion pretreated oil palm empty fruit bunch

BioResources ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 2987-3004
Author(s):  
Trinset Weeraphan ◽  
Somboon Tanasupawat ◽  
Ancharida Savarajara

NaOH-impregnation with catalyst steam explosion was found to be an efficient pretreatment method for oil palm empty fruit bunch (OPEFB) as a substrate for oil production by Naganishia cerealis IN1S2.5. Cellulase hydrolysis of the pretreated OPEFB yielded glucose at 0.364 g/g. Investigation of N. cerealis IN1S2.5 oil production in the OPEFB hydrolysate revealed a maximum oil yield (2.46 g/L) when the C/P molar ratio of the OPEFB hydrolysate was adjusted to 25.71, supplemented with Ca2+ and Zn2+, and set to pH 4. The N. cerealis IN1S2.5 oil was comprised of oleic (37.6%), palmitic (36.2%), and steric (17.9%) acids, all (w/w), as the major fatty acids. Predicted properties of the produced biodiesel indicated the potential of N. cerealis IN1S2.5 oil as a biodiesel feedstock.

2007 ◽  
Vol 98 (3) ◽  
pp. 554-559 ◽  
Author(s):  
S.H.A. Rahman ◽  
J.P. Choudhury ◽  
A.L. Ahmad ◽  
A.H. Kamaruddin

Fuel ◽  
2017 ◽  
Vol 194 ◽  
pp. 180-187 ◽  
Author(s):  
Farah B. Ahmad ◽  
Zhanying Zhang ◽  
William O.S. Doherty ◽  
Valentino S.J. Te'o ◽  
Ian M. O'Hara

BioResources ◽  
2016 ◽  
Vol 12 (1) ◽  
Author(s):  
Yin Ying H'ng ◽  
Akiko Nakagawa-Izumi ◽  
Cheu Peng Leh ◽  
Atanu Kumar Das ◽  
Hiroshi Ohi

2011 ◽  
Vol 415-417 ◽  
pp. 1164-1167 ◽  
Author(s):  
Hasleena Boontawee ◽  
Charoen Nakason ◽  
Azizon Kaesaman ◽  
Anoma Thitithammawong ◽  
Sopa Chewchanwuttiwong

Benzyl esters of fatty acids based on three types of vegetable oils (i.e., coconut, palm, and soybean oils) were in-house prepared. They were used as alternative rubber processing oil to replace conventional aromatic oil which has been banned by European community since December 2009. Fatty acids were first prepared by hydrolysis of vegetable oils and thereafter esterified with benzyl alcohol in the presence of sulfuric acid as a catalyst. The reaction based on molar ratio of fatty acid:benzyl alcohol:sulfuric acid was set at 1.5:1.0:0.05 gave yield of benzyl esters higher than 80%. Rubber compounds containing different types of benzyl ester were prepared according to the standard formulation of ASTM 3184. It was found that the processing oil in the form of benzyl esters is possible to use instead of aromatic oil in rubber formulation. Various parameters and properties include mixing energy, Mooney viscosity, curing, mechanical and dynamic mechanical properties of rubber compounds and vulcanizates have been investigated.


2021 ◽  
Vol 17 (1) ◽  
pp. 65-77
Author(s):  
Shamala Gowri Krishnan ◽  
Fei-Ling Pua ◽  
Ee-Sann Tan

Biomass, renewable, abundantly available and a good source of energy. The conversion of biomass waste into valuable products has received wide attention. In this study, an empty fruit bunch (oil palm EFB) supported magnetic acid catalyst for esterification reaction was successfully prepared via the one-step impregnation process. The new magnetic catalyst achieved a higher surface area of 188.87 m2/g with a total acidity of 2.4 mmol/g and identified iron oxide as g-Fe2O3. The magnetization value of 24.97 emu/g demonstrated that the superparamagnetic catalyst could be easily recovered and separated after the reaction using an external magnet. The catalytic performance of oil palm EFB supported magnetic acid catalyst was examined by esterification of oleic acid. Esterification process parameters were optimized via Response Surface Methodology (RSM) optimization tool with Box-Behnken design (BBD). The following optimum parameters were determined: an amount of 9 wt% catalyst, molar ratio of methanol to oleic acid of 12:1, reaction time of 2 h and reaction temperature of 60 °C with a maximum conversion of 94.91% was achieved. The catalyst can be recycled up to five cycles with minimal loss in its activity. The oil palm waste-based magnetic acid catalyst indicates its potential replacement to the existing solid catalysts that are economical and environmentally friendly for the esterification process in biofuel applications. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 


BioResources ◽  
2016 ◽  
Vol 11 (3) ◽  
Author(s):  
Trinset Weeraphan ◽  
Vasana Tolieng Tolieng ◽  
Vichien Kitpreechavanich ◽  
Somboon Tanasupawat ◽  
Ancharida Akaracharanya

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