Predicting CO2 and CH4 Transport in Landfill Gas Using Porous Inorganic Membranes Operated in The Darcy Regime

Gobina, Edward; Ogunlude, Priscilla; Abunumah, Ofasa; Giwa, Ayo; Muhammad-Sukki, Firdaus

Abstract

The present work is focusing on the utilization of previously fabricated membrane to study the effect of pressure drop and temperature on permeability. Mass transfer considerations were used under previously optimized conditions. Subsequently, gas permeation study was conducted on ceramic membranes in CO2 and small molecules present in biogas and it was found that the permeance of CO2 and CH4 nm, according to the decrease in pore size of the membranes. The transport of pure gases through a microporous composite membrane is also discussed. The membrane consists of an 2 washcoat top (separation) layer. The theory of Knudsen diffusion, laminar flow and Darcy flow are used to describe the transport mechanisms. It appears for the composite membrane that Knudsen diffusion occurs in the top layer and combined Knudsen diffusion/laminar flow in the support at pressure lev transport process that takes over in a non-porous membrane is solution-diffusion-is a far simpler process than the complex, surface-mediated adsorption-surface diffusion occurring in the finest-scale porous membranes. For all experiments described below, the gauge pressure was kept lower than these critical pressures.

• Presentation Conference Type: Conference Paper (Published)
• Conference Name: International Congress on Scientific Advances (ICONSAD’21)
• Start Date: Dec 22, 2021
• End Date: Dec 25, 2021
• Acceptance Date: Dec 15, 2021
• Online Publication Date: Dec 31, 2021
• Publication Date: 2021
• Deposit Date: Jan 10, 2022
• Publicly Available Date: Jan 11, 2022
• Pages: 770-784
• Book Title: International Congress on Scientific Advances (ICONSAD’21): Proceedings Book
• ISBN: 978-605-74234-9-8
• Keywords: Membrane; Pore size; nanoporous; Permeance; Biogas; Mechanism
• Public URL: http://researchrepository.napier.ac.uk/Output/2833283
• Publisher URL: https://5e062a34-a53f-443b-8e22-d1836414e039.filesusr.com/ugd/1dd905_5b9acae43f9a41c99b53c71e8e0b1105.pdf