MUMBAI, India, Aug. 17 -- Intellectual Property India has published a patent application (202641096611 A) filed by Akshaya College Of Engineering And Technology on August 10, 2026, for Co-Digestion Of Multi-Component Organic Waste For Sustainable Solid Waste Management And Rehanced Biogas Production.
Inventors include Dr. R. Premsudha; Ms. D. Kalaimathi; Mr. S. Hariskumar; Ms. B. Maheswari; Ms. G. Moovanthika; and Mr. J. Regupathiraja.
The application for the patent was published on August 14, 2026, under issue no. 33/2026.
Abstract: ABSTRACT CO-DIGESTION OF MULTI-COMPONENT ORGANIC WASTE FOR SUSTAINABLE SOLID WASTE MANAGEMENT AND REHANCED BIOGAS PRODUCTION The co-digestion of multi-component organic waste is an innovative and sustainable solution for effective municipal solid waste management and enhanced renewable energy production. The present study focuses on the utilization of food waste (FW), cow dung (CD), and paper sludge (PS) through anaerobic digestion for biogas generation. A Dheenabandhu type fixed dome biogas digester was used to convert biodegradable waste into methane-rich biogas and nutrient-rich slurry under anaerobic conditions. The system was designed to improve waste utilization efficiency, reduce environmental pollution, and promote renewable energy recovery. The experimental investigation was carried out at Tamil Nadu Agricultural University (TNAU), Coimbatore, using a 10 L biomethanation unit, while waste assessment studies were conducted at Akshaya College of Engineering and Technology (ACET), Coimbatore. Various substrate combinations such as FW + CD and FW + PS were analyzed to evaluate digestion efficiency and gas yield. Important parameters including pH, moisture content, total solids, volatile solids, and C/N ratio were monitored throughout the study. The results revealed that the co-digestion of food waste with cow dung produced higher and more stable biogas yield compared to food waste with paper sludge. The highest cumulative gas production of 361 units was observed on the 30th day under stabilized digestion conditions. The addition of cow dung improved microbial activity and buffering capacity, thereby enhancing methane production and process stability. The digested slurry obtained after anaerobic digestion was found suitable for use as an organic fertilizer.This study demonstrates that anaerobic co-digestion is an eco-friendly and economically feasible approach for biodegradable waste management and renewable energy generation. The proposed system can be effectively implemented in educational institutions, hostels, industries, and municipal sectors for sustainable solid waste management and reduction of greenhouse gas emissions.
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