Performance of a Sisal Fibre Fixed-Bed Anaerobic Digester for Biogas Production from Sisal Pulp Waste
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Date
2009
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Abstract
A single stage anaerobic digester employing a sisal fibre waste fixed bed was studied for biogas
production from sisal pulp waste. The fibre was colonized by microorganisms involved in biogas
production. The sisal pulp waste to be digested was fed from the top and was sprinkled
intermittently with recirculating leachate from the material. Organic loading rates of 0.1-10 kg
volatile solids (VS) m-3
d-1 could be applied and methane yields in the range of 0.13-0.48 m3 CH4
kg
-1 VS added were obtained. The average methane content in the biogas produced from sisal
pulp waste was 55%, and the biogas production rate was 0.15-0.54 m3
m-3
d-1
. The methane yield
obtained and the highest organic loading rate that could be sustained by this simple, fixed-bed
digester are indications of an attractive system in terms of performance and reliability. It is
concluded that the sisal fibre waste fixed bed is a promising carrier for microbes and can be
employed for long-term operation without changing the bed.
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Citation
Mshandete, A., Björnsson, L., Kivaisi, A.K., Rubindamayugi, M.S.T. and Mattiasson, B., 2009. Performance of a sisal fibre fixed-bed anaerobic digester for biogas production from sisal pulp waste. Tanzania Journal of Science, 31(2), pp.41-51.