Reactive Separation for Biodiesel Purification Using Hybrid Membrane Systems

Volume: 11 | Issue: 02 | Year 2025 | Subscription
International Journal of Chemical Separation Technology
Received Date: 12/03/2025
Acceptance Date: 12/06/2025
Published On: 2025-12-16
First Page: 17
Last Page: 30

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By: Vaibhav Godase, Rajesh Khiste, and Vyankatesh Palimkar.

1 Assistant Professor, SKN Sinhgad College of Engineering, Pandharpur
2 Lecturer, Karmayogi College of Engineering, Pandharpur

Abstract

 Biodiesel produced through transesterification typically contains several impurities, including residual glycerol, unreacted methanol, soaps, water and homogeneous catalysts, all of which reduce fuel quality and hinder compliance with EN 14214 and ASTM D6751 standards. Conventional purification techniques such as water washing, centrifugation and vacuum distillation are energy-intensive, generate large volumes of wastewater and often fail to efficiently remove polar contaminants. To overcome these limitations, this study examines a reactive separation strategy that integrates chemical conversion with in-situ purification using a hybrid membrane system consisting of a catalytic membrane reactor followed by a pervaporation unit.A catalyst-immobilized polymeric or ceramic membrane is used to simultaneously enhance transesterification kinetics and selectively remove methanol and water, thereby shifting the reaction equilibrium toward fatty acid methyl ester formation. The hybrid configuration is complemented by pervaporation to achieve deep purification of the biodiesel stream. Experimental evaluations (placeholder results) indicate an increase in FAME purity from 96 percent to 99.2 percent, a reduction in free glycerol to below 5 ppm, and a 60 to 70 percent decrease in wastewater generation compared to conventional washing. Energy consumption was reduced by approximately 25 percent, while the membrane maintained stable flux and catalytic activity across multiple cycles.These findings suggest that hybrid reactive–membrane separation presents an efficient and environmentally sustainable alternative for industrial biodiesel purification.

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Citation:

How to cite this article: Vaibhav Godase, Rajesh Khiste, and Vyankatesh Palimkar Reactive Separation for Biodiesel Purification Using Hybrid Membrane Systems. International Journal of Chemical Separation Technology. 2025; 11(02): 17-30p.

How to cite this URL: Vaibhav Godase, Rajesh Khiste, and Vyankatesh Palimkar, Reactive Separation for Biodiesel Purification Using Hybrid Membrane Systems. International Journal of Chemical Separation Technology. 2025; 11(02): 17-30p. Available from:https://journalspub.com/publication/ijcst/article=22591

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