CHARACTERISATION OF SELECTED FRUIT AND VEGETABLE SOLID WASTE (FVSW) TO DETERMINE THEIR POTENTIAL USE AS A SUBSTRATE FOR BIOHYDROGEN PRODUCTIONAJAY DWIVEDI, A.N. VAIDYA AND M. SURESH KUMAR
Detailed knowledge of various chemical constituents of FVSW can help establish their feasibility for dark fermentation. A total of 15 vegetables and 7 fruits; solid wastes were individually analysed for pH, total solids (TS), volatile solids (VS), fixed solids (FS), total sugars, extractable proteins, cellulose, hemicellulose, lignin, elemental carbon (C), nitrogen(N), hydrogen(H), sulphur(S) and oxygen(O). pH of vegetables was in the range of 3-7.TS, VS, FS, total sugars and proteins for vegetables were in the range of 181-48g/Kg, 171-43g/Kg, 59-5 g/Kg, 143-32 g/Kg and 0.2-3 g/Kg respectively and for fruits the parameters ranged between 292-53g/Kg, 281-49g/Kg, 18-4g/Kg, 214-37g/Kg and 8-0.4g/Kg respectively. Cellulose, hemicellulose, lignin, elemental C, N, H, S, and O for vegetables were in the range of 18-52%, 29-71%, 1-26%, 31-55%, 0.2-2.8%, 2-5%, 0.01-0.3 and 32-58% respectively and for fruits it varied between 32-49%, 37-58%, 2-8%, 51-60%, 0.5-2%, 1-5%, 0.1-0.2% and 30-40% respectively. Fruits and vegetable waste exhibit high volatile solids fraction along with the feasible amount of sugars and proteins, with rich C, N, H and S content, making fruit and vegetable waste ideal substrate for Bio hydrogen production through dark fermentation.
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