Pressure Filtration of Australian Bagasse Pulp |
| |
Authors: | Thomas J Rainey William O S Doherty D Mark Martinez Richard J Brown Neil A Kelson |
| |
Institution: | (1) Department of Chemistry, Wuhan University, 430072 Wuhan, China;(2) Engineering Research Center for Biomass Modified Materials, 621010 Mianyang, Sichuan Province, China; |
| |
Abstract: | A one-dimensional pressure filtration model that can be used to predict the behaviour of bagasse pulp has been developed and
verified in this study. The dynamic filtration model uses steady state compressibility parameters determined experimentally
by uniaxial loading. The compressibility parameters M and N for depithed bagasse pulp were determined to be in the ranges 3000–8000 kPa and 2.5–3.0 units, respectively. The model also
incorporates experimentally determined steady state permeability data from separate experiments to predict the pulp concentration
and fibre pressure throughout a pulp mat during dynamic filtration. Under steady state conditions, a variable Kozeny factor
required different values for the permeability parameters when compared to a constant Kozeny factor. The specific surface
area was 25–30% lower and the swelling factor was 20–25% higher when a variable Kozeny factor was used. Excellent agreement
between experimental data and the dynamic filtration model was achieved when a variable Kozeny factor was used. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|