A bacterial population analysis of granular sludge from an anaerobic digester treating a maize-processing waste
✍ Scribed by A.R. Howgrave-Graham; F.M. Wallis; P.L. Steyn
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 822 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0960-8524
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✦ Synopsis
Microbial population studies were conducted on a dense granular sludge, with excellent settling, thickening and nutrient removal properties, from a South African clarigester treating effluent from a .factory producing glucose and other carbohydrates .from maize. The bacterial population comprised a heterogeneous group including acetogens, enterobacteria, sulphate-reducers, spirochaetes, heterofermentative lactobacilli and methanogens. The presence of these bacteria and lack of propionic acid and butyric acid bacteria suggests that the microbial activity of this anaerobic digester involved acetate and lactate metabolism rather than propionate or butyrate catabolism as a source of precursors for methane production.