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Liquid Fertilizer from Food Waste - A Sustainable Approach

Author Affiliations

  • 1 Department of Environmental Science, University College of Science, Osmania University, Telangana State, Hyderabad , INDIA

Int. Res. J. Environment Sci., Volume 4, Issue (8), Pages 22-25, August,22 (2015)


Food waste actually has a good potential if it is processed into organic liquid fertilizer rather throwing away. The present research study deals with conversion of food waste generated from restaurants, marriage halls and hotels into organic liquid fertilizer through anaerobic process in the Cherlapally Industrial Area for improving service level benchmarks as designed by the Ministry of Environment and Forest. The food waste was processed in a closed container along with addition of molasses in anaerobic conditions where after 72 hours the food waste started converting into organic liquid fertilizer and a by-product as pulp. The NPK values were analyzed in the liquid fertilizer which showed N-1.15 %, P- 0.308% and K- 0.7% and in pulp N-0.39%, P-0.159% and K-0.51%. Pot culture experiments in triplicate were conducted to test the toxicity of the organic liquid fertilizer for seed germination. Liquid fertilizer has many advantages because of easy process, inexpensive and no side effects. The resulting benefits are very likely to fertilize crops, to maintain the stability of nutrient elements in the soil and reducing the bad impacts of chemical fertilizers. In addition to a liquid fertilizer that can be sold in the market, liquid fertilizer can be used for agriculture purpose or in the premises for plantation.


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