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The potential of agro-industrial residues and municipal solid waste for production of biogas and electricity in Tanzania

Abstract

This paper gives an overview of the energy demands in Tanzania, and highlights the current serious shortage of electricity. Government strategy to alleviate the problem include exploitation of the country`s big natural gas reserves for power generation, and utilization of the renewable energies such as solar, wind and biogas. Important agro-industrial residues and municipal solid wastes with large potentials for anaerobic converstion into biogas and electricity have been identified and quantified. Tanzania is estimated to generate about 615,000 organic matter from coffee, sisal, sugar and cereal residues and households in main towns are estimated to generate about 600,000 tons of organic matter annually. Laboratory scale determinations of methane yields from the residues gave 400 m{sup 3} CH{sub 4}/ton VS of sisal pulp; 400 m{sup 3} CH{sub 4}/ton VS of sisal production wastewater; 400 m{sup 3} CH{sub 4}/ton VS of Robusta coffee solid waste, 350 m{sup 3} CH{sub 4}/ton VS of sugar processing wastewater; 250 m{sup 3} CH{sub 4}/ton VS of sugar filter mat, 450 m{sup 3} CH{sub 4}/ton VS maize bran and 300 m{sup 3} CH{sub 4}/ton VS of mixed household waste. Based on these results the estimated total annual potential electricity production from these residues is 1.4 million MW.  More>>
Authors:
Kivaisi, A K [1] 
  1. Univ. of Dar es Salaam, Botany Dept., Applied Microbiology Unit (Tanzania, United Republic of)
Publication Date:
Dec 31, 1997
Product Type:
Conference
Report Number:
NEI-DK-3231; CONF-9709274-
Reference Number:
SCA: 090700; 093000; PA: DK-98:001546; EDB-98:092574; SN: 98001995586
Resource Relation:
Conference: Seminar on biogas - bioenergy potential in East Africa, Dar es Salaam (Tanzania, United Republic of), 22-23 Sep 1997; Other Information: DN: EFP-94; PBD: 1997; Related Information: Is Part Of Biogas - Bioenergy potential in East Africa; PB: 101 p.
Subject:
09 BIOMASS FUELS; TANZANIA; SOLID WASTES; AGRICULTURAL WASTES; METHANE; POWER GENERATION; ANAEROBIC DIGESTION; COFFEE PLANTS; CACTI; MOLASSES
OSTI ID:
643255
Research Organizations:
Dansk Teknologisk Inst., Taastrup (Denmark); University of Dar es Salaam, Dar es Salaam (Tanzania, United Republic of). Applied Microbiology Unit
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Other: ON: DE98773763; CNN: Contract ENS-1383/94-0012; TRN: DK9801546
Availability:
INIS; OSTI as DE98773763
Submitting Site:
DK
Size:
pp. 7-18
Announcement Date:
Sep 28, 1998

Citation Formats

Kivaisi, A K. The potential of agro-industrial residues and municipal solid waste for production of biogas and electricity in Tanzania. Denmark: N. p., 1997. Web.
Kivaisi, A K. The potential of agro-industrial residues and municipal solid waste for production of biogas and electricity in Tanzania. Denmark.
Kivaisi, A K. 1997. "The potential of agro-industrial residues and municipal solid waste for production of biogas and electricity in Tanzania." Denmark.
@misc{etde_643255,
title = {The potential of agro-industrial residues and municipal solid waste for production of biogas and electricity in Tanzania}
author = {Kivaisi, A K}
abstractNote = {This paper gives an overview of the energy demands in Tanzania, and highlights the current serious shortage of electricity. Government strategy to alleviate the problem include exploitation of the country`s big natural gas reserves for power generation, and utilization of the renewable energies such as solar, wind and biogas. Important agro-industrial residues and municipal solid wastes with large potentials for anaerobic converstion into biogas and electricity have been identified and quantified. Tanzania is estimated to generate about 615,000 organic matter from coffee, sisal, sugar and cereal residues and households in main towns are estimated to generate about 600,000 tons of organic matter annually. Laboratory scale determinations of methane yields from the residues gave 400 m{sup 3} CH{sub 4}/ton VS of sisal pulp; 400 m{sup 3} CH{sub 4}/ton VS of sisal production wastewater; 400 m{sup 3} CH{sub 4}/ton VS of Robusta coffee solid waste, 350 m{sup 3} CH{sub 4}/ton VS of sugar processing wastewater; 250 m{sup 3} CH{sub 4}/ton VS of sugar filter mat, 450 m{sup 3} CH{sub 4}/ton VS maize bran and 300 m{sup 3} CH{sub 4}/ton VS of mixed household waste. Based on these results the estimated total annual potential electricity production from these residues is 1.4 million MW. The total oil substitution from these residues has been estimated at 0.35 million tonnes crude diesel oil per annum equivalent to 2% of the total energy consumption in Tanzania. Case studies onthe coffee and sisal processing factories indicate that exploitation of the residues for the production of electricity on site these factories is feasible. Utilization of agro-industrial residues and municipal waste for biogas production has enormous potential for reduction of environmental pollution. The potential substitution of fossil fuel with biogas represents an annual reduction in the net CO{sub 2} emission to the atmosphere of approximately 1.3 million tonnes. By treating the residues in controlled anaerobic systems it is possible to reduce the methane emission by about 62 million m{sup 3}, and at the same time reduce contamination of surface and ground waters. (au) EFP-94. 11 refs.}
place = {Denmark}
year = {1997}
month = {Dec}
}