Anaerobic digestion of a sulphate rich high strength landfill leachate: the effect of differential dosing with FeCl3
Anaerobic digestion of a sulphate rich high strength landfill leachate: the effect of differential dosing with FeCl3
The effect of different dose concentrations of FeCl3 on the performance of a mesophilic anaerobic digester treating a highly alkaline, high-strength and sulphate-rich landfill leachate was tested. The results indicated that sulphate reduction was the predominant reaction and methanogenic processes were entirely inhibited in the reactor without FeCl3 addition. Adding FeCl3 into the reactor restored some methanogenic activity and also improved the rates of sulphate reduction. A combination of sulphate reduction and methanogenic activity resulted in up to 75% chemical oxygen demand (COD) removal and 85% sulphate removal. Sulphate reduction remained the principle mechanism by which COD removal took place with a methane yield of only between 0.14 and 0.18 m3 CH4 kg-1 COD removed being achieved. The process was, however, stable and offered advantages for the further treatment or conveyance of the anaerobically treated leachate.
anaerobic digestion, FeCl3, sulphate, sulphide, landfill, leachate, wmr 811-8
289-293
Wang, Zhengjian
6ee8e2f0-35a2-4e0c-b818-c7837cd75b94
Banks, Charles J.
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f
June 2006
Wang, Zhengjian
6ee8e2f0-35a2-4e0c-b818-c7837cd75b94
Banks, Charles J.
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f
Wang, Zhengjian and Banks, Charles J.
(2006)
Anaerobic digestion of a sulphate rich high strength landfill leachate: the effect of differential dosing with FeCl3.
Waste Management & Research, 24 (3), .
(doi:10.1177/0734242X06065232).
(PMID:16784173)
Abstract
The effect of different dose concentrations of FeCl3 on the performance of a mesophilic anaerobic digester treating a highly alkaline, high-strength and sulphate-rich landfill leachate was tested. The results indicated that sulphate reduction was the predominant reaction and methanogenic processes were entirely inhibited in the reactor without FeCl3 addition. Adding FeCl3 into the reactor restored some methanogenic activity and also improved the rates of sulphate reduction. A combination of sulphate reduction and methanogenic activity resulted in up to 75% chemical oxygen demand (COD) removal and 85% sulphate removal. Sulphate reduction remained the principle mechanism by which COD removal took place with a methane yield of only between 0.14 and 0.18 m3 CH4 kg-1 COD removed being achieved. The process was, however, stable and offered advantages for the further treatment or conveyance of the anaerobically treated leachate.
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Published date: June 2006
Keywords:
anaerobic digestion, FeCl3, sulphate, sulphide, landfill, leachate, wmr 811-8
Identifiers
Local EPrints ID: 184699
URI: http://eprints.soton.ac.uk/id/eprint/184699
ISSN: 0734-242X
PURE UUID: 38783f0c-a1f1-403b-aec2-dd4eb3890919
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Date deposited: 12 May 2011 13:27
Last modified: 15 Mar 2024 02:52
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Author:
Zhengjian Wang
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