Abstract
Kitchen waste from hotels and homes is one of the major problems for urban and rural environment and could be one of the best sources of renewable energy by producing biogas through anaerobic digestion. A research work was undertaken to assess the methane potential of kitchen waste at different total solids (TS) content. Kitchen wastes such as spoiled rice, brinjal, potato, papaya, tomato, fish and poultry parts etc., which are easily decomposed, were selected for this study. Batch experiments were set up under ambient temperature. Kitchen waste was added to the batch digester at different TS content (5, 7, 10, 12 and 15%) and sealed for 146 days until the gas production stopped. Substrate characteristics were analyzed before and after the anaerobic digestion. The highest methane yield was 78.12 L/kg VS at 15% TS content followed by 12, 10, 7 and 5%. Different kinetic parameters were determined using a logistic model and the model showed a good fit with the experimental results. After modelling using Minitab®, the optimum TS content for kitchen waste was found to be 14.90%.
Highlights
In Bangladesh, energy production is mainly based on natural fossil fuel and the contribution of energy from renewable resources is almost negligible in the country
Kitchen waste includes food waste, vegetables waste, garbage, broken material that are found in homes and these are discarded into open areas and generate harmful gases
The biogas production was measured by volume displacement of glass syringe (SGE, Australia, capacity: 500 mL) and gas composition was analyzed using a gas analyzer (BIOGAS 5,000, Geotechnical Instruments Ltd, Coventry, UK) with the help of gas sampling bags according to the manufacturer procedure
Summary
In Bangladesh, energy production is mainly based on natural fossil fuel and the contribution of energy from renewable resources is almost negligible in the country. The power generation capacity of the country is ∼20,000 MWe, only 1.37% of which comes from renewable sources (Nandi et al 2020). Kitchen waste includes food waste, vegetables waste, garbage, broken material that are found in homes and these are discarded into open areas and generate harmful gases (such as CO2, CO, H2S etc.). To reduce such emissions, controlled biodegradation of these wastes through anaerobic digestion (AD) is necessary. Biogas produced from organic waste could play a vital role in solving energy crisis and environmental problems of the country
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
