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Md. Raihanul Islam Sumaiya Akter Ruponti Md. Abdur Rakib Huy Quoc Nguyen Monjur Mourshed 《Frontiers of Environmental Science & Engineering》2023,17(6):66
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Anjan Deb Jannatul Ferdous Kaniz Ferdous M. Rakib Uddin Md. Wasikur Rahman 《International Journal of Green Energy》2017,14(12):1063-1072
In this study, castor oil (CO) has been investigated as a potential source for biodiesel production in Bangladesh. Castor oil has been extracted from the seeds by mechanical press and the Soxhlet extraction method. Maximum oil content of 55.7% has been found by the Soxhlet extraction method. The physicochemical properties such as free fatty acid (FFA) content, kinematic viscosity, saponification value, and density of the oil have been measured by different standard methods. The FFA content and viscosity have been found considerably higher such as 33.5% and 253 mm2/s, respectively. Biodiesel has been prepared using a three-step method comprising of saponification of oil followed by acidification of the soap and esterification of FFA. The overall yield of FFA from CO is found to be around 89.2%. The final step is esterification that produces fatty acid methyl ester (FAME) and a maximum 97.4% conversion of FFA to biodiesel has been observed. The effect of the oil to methanol molar ratio, catalyst concentration, reaction temperature, and time has been investigated for esterification reaction and optimized using the response surface methodology. 1H NMR of crude castor oil and castor oil methyl ester (COME) was studied and analyzed that confirms the complete conversion of castor oil to biodiesel. Finally, the biodiesel, produced under optimum conditions, was characterized using the various standard method and found comparable with petro-diesel and biodiesel standard. 相似文献
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Rakib Md.Refat Jahan Rahman Md. Asrafur Onyena Amarachi Paschaline Kumar Rakesh Sarker Aniruddha Hossain M. Belal Islam Abu Reza Md. Towfiqul Islam Md. Saiful Rahman Md. Mostafizur Jolly Yeasmin Nahar Idris Abubakr M. Ali Mir Mohammad Bilal Muhammad Sun Xian 《Environmental science and pollution research international》2022,29(45):67532-67558
Environmental Science and Pollution Research - The coastal zone of Bangladesh, with a population density of 1278 people per square kilometer, is under serious threat due to heavy metal pollution.... 相似文献
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