Waste to wealth

Environmental biotechnology

1. WASTE TO WEALTH Done by, Saranya D M.Tech-1 st year Department of Biotechnology K S Rangasamy College of Technology 1

2. WASTE Any substance which is discarded after primary use or is worthless , defective and of no use . 2

3. Sources of waste Home Shopping centres Offices Schools Industries Eateries Religion centres Hospitals Events 3

4. Care of the environment begins by 4

5. Waste to wealth technologies 5 Composting kitchen waste Organic waste collection 1. Manures 2. Mushroom cultivation Production of ethanol, acetic acid, citric acid by fermentation Bio gas and bio fuel production

6. Charcoal Briquettes Charcoal briquettes can be made from waste materials and burn longer the traditional charcoal. They are easy to make on a small or large scale, can be a source of income generation for the family. 6

7. Biogas Production Methane rich gas (97%) Produced by anaerobic digestion Organic food waste is uneconomic to reuse or recycle Biofuel can be used to generate renewable electrical and heat energy Reduces the Green house gas emission, not adding carbon in to the environment 30% energy savings over fossil fuels 7

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9. Mushroom cultivation from agro wastes Agro wastes are rich in lignocellulosic components Fungi convert complex organic compounds into valuable products Mushroom strains produced world wide are , Button – Agaricus Oyster – Pleurotous Shiitake – Lentinula Edodes Straw – Volvallella volvacea Chinese mushroom - Ganoderma 9

10. Agro wastes in mushroom cultivation includes, Wheat straw Paddy straw Rice straw Rice bran Molasses Coffee straw Banana leaves Tea leaves Cotton straw Saw dust 10

11. Human Urine to fertilizer 11

12. Ethanol production from agro waste In abundant supply (about 5 million ton per year) Potentially promising bio resource High sugar content High potential of ethanol production High concentration of salt (1.9-2.2 %) Does not lead to resource conflict (insufficient food supply) 12

13. Fruit waste for citric acid production Orange peel waste Sugarcane bagasse Grape pomace Apple pomace Pine apple pomace Tapioca Coconut husk Banana peels Whey 13

14. Thank you !! 14