Abstract
Objectives: The work is to recover the energy from food and vegetable waste with water hyacinth and cowdung. Methods: The present study focuses the lights to recover energy from organic waste and to adopt safe disposal and conserving natural resources. Laboratory scale batch digesters were set up to find the biogas production potential of Food waste and Vegetable waste with water hyacinth and cow dung. Food waste was collected from our TKR college mess similarly Vegetable waste was collected from the Hyderabad market and prepared for further analysis. Similarly water hyacinth was collected from a Meerpet lake in Hyderabad. Six digesters with varying Vegetable wastes and Food wastes were combined individually by increasing concentrations with fixed amount of water hyacinth and Cow dung by water displacement method. The effect of food waste and vegetable waste concentration on the biogas yield was investigated and the experiments were characterised before and after digestion. Findings: Modified Gompertz Equation (MGE) model was fitted to the experimental values and kinetic parameters such as maximum cumulative biogas potential Bmax (L/gVS), specific biogas production rate, Rb (L gVS-1d-1) and lag phase time, λ(d), were estimated. Experimental values were compared with MGE using MAT LAB. Applications/Improvements: From the experimental study observed that an aerobic degradation took place and the biogas produced was measured daily. Kinetic analysis of the biogas production was done and compared & conclusions were drawn. Keywords: Anaerobic Digestion, Food Waste, Modified Gompertz Equation (MGE), Vegetable Waste Kinetic Modelling, Water Hyacinth
Highlights
Production of biogas from organic waste has gained popularity in recent years and is being adopted for implementation mainly for its energy demand and for the proper disposal of organic waste without causing harm to human beings and to the environment
Food Waste (FOW) and Vegetable Waste (VW) and Water Hyacinth (WH) with Cow Dung (CD) as inoculums are the materials used for digestion process
Food waste; vegetable waste and cow dung were dried in sunlight for 5 days and oven dried for 6 hours at 75 ̊C after which it was grinded by using a grind mill separately
Summary
Production of biogas from organic waste has gained popularity in recent years and is being adopted for implementation mainly for its energy demand and for the proper disposal of organic waste without causing harm to human beings and to the environment. Organic waste, such as vegetable waste and fruit waste can be biodegraded by micro-organisms. Anaerobic digestion of waste produces biogas and reduces the organic waste to a more stable and less harmful[2, 3]. It is considered to be the worst aquatic weed, due to its rich nitrogen content which is utilized for biogas production[9, 10]
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