University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Development of a novel fractal-like kinetic model for elucidating the effect of particle size on the mechanism of hydrolysis and biogas yield from ligno-cellulosic biomass

Momoh, O.L.Y. and Ouki, Sabeha (2018) Development of a novel fractal-like kinetic model for elucidating the effect of particle size on the mechanism of hydrolysis and biogas yield from ligno-cellulosic biomass Renewable Energy, 118. pp. 71-83.

[img] Text
Development of a novel fractal-like kinetic model - AAM.pdf - Accepted version Manuscript
Restricted to Repository staff only until 2 November 2019.

Download (1MB)

Abstract

The effect of particle size on hydrolysis and biogas production kinetics from a typical ligno-cellulosic biomass was assessed by studying the anaerobic co-digestion of fixed amount of rice husk and cow dung mixture using a newly developed fractal-like kinetic model. British Standard (BS) sieves were used to obtain varying particles size fractions ranging from 0.150 - 0.212mm, 0.212 - 0.300mm, 0.300 - 0.600mm, 0.600 -1.000mm and 1.000 - 1.700mm from oven dried, milled rice husk and pulverized, dried cow dung respectively. These particle size fractions from both biomass were mixed in a ratio of 1:1 after which, they were loaded into batch reactors and digested anaerobically at ambient conditions for 75 days. Hydrolysis of ligno-cellulosic biomass was observed to depend on the fractal exponent (h), which indexed the presence of inaccessible regions in ligno-cellulosic biomass. Also, hydrolysis was observed to depend on two other intrinsic factors that comprised of the initial hydrolytic rate      ¢o o k Y X and overall affinity constant ( ) o o 71 k¢S . Larger particle size fractions were associated with higher affinity but lower initial hydrolysis rate while, smaller particle size fractions were associated with lower affinity but higher initial hydrolysis rate. In addition, the fractal model compared favorably with the popular modified Gompertz equation.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
NameEmailORCID
Momoh, O.L.Y.
Ouki, SabehaS.Ouki@surrey.ac.uk
Date : 2018
Identification Number : 10.1016/j.renene.2017.11.005
Uncontrolled Keywords : Fractal-like kinetics; Fractal exponent; Particle size; Biogas yield; Inaccessible regions
Depositing User : Clive Harris
Date Deposited : 17 Nov 2017 10:52
Last Modified : 15 Mar 2018 08:15
URI: http://epubs.surrey.ac.uk/id/eprint/844943

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800