Decomposition of tangerine and pomegranate wastes in water and soil: characterisation of physicochemical parameters and global microbial activities under laboratory conditions

ABSTRACTIn most scientific research, interest is given to heterogeneous green household waste collected from landfills. This paper reports a study of the enzymatic dynamics of green household waste separately decomposed in water and soil. The study showed that the highest dehydrogenase activity (800.53 μg of TFP[tri phenyl formazan]/hr/gdw) was noted for the digested pomegranate waste in the soil. The overall hydrolytic activity (0.12 μmol of hydrolysed FDA[fluorescein di acetate]/hr/gdw), and the carbon dioxide (CO2) release were higher (777.20 μg of CO2/hr/gdw) in digestion in water. For tangerine waste digested in water, the CO2 release (918.96 µg of CO2/hr/gdw) and overall hydrolytic activity (0.19 μmol of hydrolysed FDA/hr/gdw) were most pronounced. The values of physicochemical parameters were generally lower in tangerine waste than in pomegranate waste, and lower in water decomposition than in soil decomposition.