Modeling of a membrane reactor system for crude palm oil transesterification. Part I: Chemical and phase equilibrium

Abstract

in Wiley Online Library (wileyonlinelibrary.com) Using a membrane reactor for reversible transesterification reaction involves reaction and product separation within a single unit. However, a pseudohomogeneous reaction and heterogeneous separation must be maintained for successful membrane reactor operation. Present research is aimed to develop an integrated model of chemical and phase equilibrium (CPE) and modified Maxwell-Stefan equation that describes the simultaneous CPE and mass transport phenomena of biodiesel production from crude palm oil (CPO) using a membrane reactor. In the first part of this work, a systematic approach describing simultaneous CPE of CPO transesterification in the membrane reactor was developed with the reconciliation of transesterification reaction and phase equilibrium that involves six-component. The results revealed that regressed apparent equilibrium constant, K eq value of 17.55761.51% were higher than the literatures. This indicates that forward reaction of the reversible CPO transesterification is much favored in the membrane reactor than the conventional reactor. Figure 1. Schematic diagram of CPO transesterification in the membrane reactor prototype.

Mini Review of Biodiesel by Integrated Membrane Separation Technologies That Enhanced Esterification/Transesterification

“…Chong et al and Oh et al , combined thermodynamics and reaction kinetics with a modified Stefan–Maxwell mass transfer model. On the basis of the research of chemical balance, phase equilibrium, and mass balance, they also established an esterification model that successfully predicted the phase separation of the reaction system and the concentration of each ingredient in the penetrating fluid.…”

Role of bioenergy, biorefinery and bioeconomy in sustainable development: Strategic pathways for Malaysia

“…The multiphase transesterification reaction suffers from mass transfer limitations. Various researchers have investigated intensification of biodiesel reactor for increasing area to volume ratio and overcoming mass transfer limitations, such as heterogeneously catalyzed reactor [54], oscillatory baffled reactor [55][56][57], micro-structured reactor [58], membrane reactor [59,60] and simulated moving bed reactor (SMBR) [61]. Dynamic multi-scale simulation and computational fluid dynamics methods have been used to optimize process and product performances.…”

A multicontinuum approach for the problem of filtration of oily‐water systems across thin flat membranes: II. Validation and examples

“…The generated shear stresses at the membrane surface, due to the crossflow velocity, CFV, tend to sweep off accumulated oil droplets. Several modeling approaches have been proposed to investigate the permeation mechanisms across the membrane . More details about these models can be found in the first part of this work .…”