Journal
ENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume 45, Issue 9, Pages 4173-4178Publisher
AMER CHEMICAL SOC
DOI: 10.1021/es1037113
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Funding
- Agency for Innovation by Science and Technology in Flanders (IWT) [IWT/063374]
- Research Council of the Katholieke Universiteit Leuven [PDMK/10/121]
- Industrial Research Council of the Katholieke Universiteit Leuven [KP/09/005]
- Belgian chemistry and life science federation essenscia
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Anaerobic digestion is widely used in waste activated sludge treatment. In this paper, partial least-squares (PLS) is employed to identify the parameters that are determining the biochemical methane potential (BMP) of waste activated sludge. Moreover, a model is developed for the prediction of the BMP. A strong positive correlation is observed between the BMP and volatile fatty acids and carbohydrate concentrations in the sludge. A somewhat weaker correlation with COD is also present. Soluble organics (sCOD, soluble carbohydrates and soluble proteins) were shown not to influence the BMP in the observed region. This finding could be most-valuable in the context of application of sludge pretreatment methods. The obtained model was able to satisfactory predict the BMP.
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