Integrated utilization of fruit-processing wastes for biogas and fish production

Abstract

An integrated system for biogas production from mango-processing wastes and utilization of biogas effluent for production of major carp Rohu, (Labeo rohita) and common carp (Cyprinus carpio) was studied. Mango peels produced 0·21 m³ of biogas per kg of total solids. Biogas effluent of mango peels, when used at 34 kg/100 m² area in ponds as the sole source of feed for carps, yielded 8·35 kg/100 m² of fish which had acceptable colour, flavour and taste every 120 days.