KINETICS OF ANAEROBICALLY CO–DIGESTED CROP RESIDUES AND BUFFALO DUNG

A. R. SAHITO, R. B. MAHAR, K. M. BROHI

Abstract


The aim of this work was to assess the kinetics of co-digestion of crop residues and buffalo dung, through the modified Gompertz model and cone model. Selected crop residues were analysed for moisture content, total and volatile solids, and pH. Methane production was measured by biochemical methane potential through the test automatic methane potential test system. Discrimination of the models were done by employing the two statistical parameters, i.e. coefficient of multiple determination (R2), standard deviation of residual (SDR) The assessment of kinetics of the anaerobic co-digestion results that, the cone model better described the experimental data, than that of the modified Gompertz model under mesophilic temperature. Moreover, the results of the present study also reveals that the BMP test is a suitable way to assess the kinetics of crop residues and buffalo dung co-digestion.

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