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| Biochemical characterization of solid wastes for the anaerobic degradation parameters |
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Abstract In an attempt to predict landfill anaerobic degradation parameters (L0, methane generation potential, k, decay rate and CSF, carbon sequestration factor) more conveniently, the linkage between biochemical characteristics of degradable solid wastes and anaerobic degradation parameters was established. The biochemical characteristics of twenty-eight kinds of degradable solid wastes including C, H, N, polysaccharide, protein, lipid, hemicellulose, cellulose, and lignin, were measured. Four kinds of biochemical characteristics including polysaccharide, protein, lipid, and lignin were determined to substitute for the original nine kinds of biochemical characteristics through factor analysis. Biochemical methane potential (BMP) tests were conducted at mesophilic temperature to investigate anaerobic degradation parameters. Partial least squares regression analysis (PLS) was applied and the results revealed that a linear relation between biochemical characteristics and anaerobic degradation parameters could be implemented. The higher L0 and k value could be attributed to higher lipid and polysaccharide content, however, the higher CSF value could be due to higher lignin content. The higher protein content may lead to lower L0 value. The linear equations can afford a new computation method for predicting anaerobic degradation parameters.
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Received: 06 August 2013
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