Fabrication and Performance Evaluation of Pebax 1657 / PVDF Composite Hollow Fiber Membranes for Biogas Upgrading: Effect of Feed Pressure and Temperature on CH₄ Purity and Recovery

Abstract

The upgrading of raw biogas to biomethane of pipeline or vehicle fuel quality requires removal of carbon dioxide from a typical 55–65% CH4 / 35–45% CO2 biogas mixture. Membrane-based gas separation has emerged as one of the most energy-efficient and operationally simple technologies for biogas upgrading, offering significant advantages over water scrubbing, pressure swing adsorption, and amine absorption in terms of equipment compactness, absence of liquid waste streams, and ease of scale-up. This paper reports the fabrication, characterisation, and systematic performance evaluation of Pebax 1657 / PVDF composite hollow fiber membranes for CO2/CH4 separation. Hollow fibers were prepared by dry-wet spinning of Pebax 1657 / PVDF blended in an 80:20 weight ratio dissolved in NMP/acetone solvent.

Cite as:

A. D. Awasare. (2026). Fabrication and Performance Evaluation of Pebax 1657 / PVDF Composite Hollow Fiber Membranes for Biogas Upgrading: Effect of Feed Pressure and Temperature on CH₄ Purity and Recovery. Journal of Research and Review in Fluid Mechanics, 2(2), 48–57. https://doi.org/10.5281/zenodo.21739815