Soap Removal from Crud Biodiesel Using Emulsion Liquid Membrane System

Monday, April 28, 2025

5:00 PM – 6:00 PM PST

Room: Expo Hall

Presenting Author(s)

Khalid M. Abed, MA in Chemical Engineering (he/him/his)

Professional Title: Mr. Position: PhD student
University of Malaya - Chemical Engineering Depart
Kuala Lumpur, Kuala Lumpur, Malaysia

Co-Author(s)

Adeeb Hayyan, PhD Chemical Eng.

Doctor of chemical engineering
Universiti Malaya
KUALA LUMPUR, Kuala Lumpur, Malaysia
HH

Hanee F. Hizaddin (she/her/hers)

Doctor of chemical engineering and head of chemical engineering department
Universiti Malaya
Kual Lumpure, Kuala Lumpur, Malaysia
AH

Ali Hashim (he/him/his)

Professor of chemical engineering
Universiti Malaya, Kuala Lumpur, Malaysia

Abstract:

The current study examines the removal of soap from crude biodiesel using a deep eutectic solvent (DES) integrated within the emulsion liquid membrane (ELM). The DES is used as a novel stripping phase in ELM. The DES is prepared from N,N-diethylethanolammonium chloride (N,N-DAC) as ammonium salt and lactic acid (LA) as a hydrogen bond donor. Several operating parameters are optimized such as N,N-DAC: LA molar ratio, DES: feed phase ratio, wt.% of span-20, stirring speed, and extraction time. Under optimum conditions (2wt.% of span-20, 1:3 N, N-DAC: LA molar ratio, 1:1 DES: feed phase volume ratio, 300 rpm stirring speed, and 8 minutes), the soap content is reduced from 930 to 20.49 ppm. The mechanism of soap elimination conforms to a first-order mass transfer behaviour, with a kinetic rate constant of 0.61 min^-1. This study shows a promising purification technique and is much more environmentally friendly for the downstream processing of biodiesel fuel.