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Biogas Purification through the use of a Microalgae-Bacterial System in Semi-Industrial High Rate Algal Ponds

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Published on: March 22, 2024

Membrane-based technologies for biogas separations.

Subhankar Basu¹, Asim L Khan, Angels Cano-Odena

¹Centre for Surface Chemistry and Catalysis, Faculty of Bioengineering Sciences, Katholieke Universiteit Leuven, Kasteelpark Arenberg 23, Post Box 2461, 3001 Leuven, Belgium.

Chemical Society Reviews

|January 30, 2010

Summary

Polymeric membranes effectively remove carbon dioxide and hydrogen sulfide from biogas. This review covers commercial, lab-made, and mixed matrix membranes, focusing on material modifications and operating conditions for enhanced gas separation.

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Published on: July 13, 2012

Area of Science:

Materials Science
Chemical Engineering
Environmental Science

Background:

Membrane processes are increasingly vital for gas separation due to cost-effectiveness and efficiency.
Biogas purification, specifically removing CO2 and H2S from CH4 and H2, is a key application.
Polymeric membranes offer a promising alternative to inorganic materials for these separations.

Purpose of the Study:

To critically review polymeric membrane processes for biogas purification.
To analyze the performance of commercial and lab-made membranes.
To explore strategies for enhancing membrane performance through material modification and optimized operating conditions.

Main Methods:

Review of existing literature on polymeric membranes for gas separation.
Analysis of membrane performance based on material composition and structure.
Investigation of mixed matrix membranes (MMMs) incorporating fillers and coupling agents.
Evaluation of operating condition effects on membrane selectivity and longevity.

Main Results:

Commercial and lab-made polymeric membranes show varying performance in CO2 and H2S removal.
Structural modifications, polymer blending, and MMMs offer pathways to improve membrane selectivity and permeability.
Polyimide (PI), cellulose acetate (CA), polysulfone (PSf), and polydimethyl siloxane (PDMS) are widely studied materials.
Operating conditions significantly impact membrane performance and application lifespan.

Conclusions:

Polymeric membranes are suitable for biogas upgrading and H2S removal.
Further development in MMMs and material functionalization is crucial for next-generation membranes.
Optimizing operating parameters alongside material selection will drive new commercial applications.