News Oil & Gas

Oil India Limited: Oil India Ltd & GMC ink MoU to collaborate on transformation of Municipal Solid Waste into compressed biogas



In a move towards environmental sustainability and cleaner energy solutions, Oil India Limited (OIL) and Guwahati Municipal Corporation (GMC) inked a Memorandum of Understanding (MoU) to collaborate on the transformation of Municipal Solid Waste (MSW) into Compressed Biogas (CBG).

The MoU was signed by Bhaskar Jyoti Phukan, MD, NRL representing OIL, and Megha Nidhi Dahal, Commissioner, GMC, representing the Guwahati Municipal Corporation in the presence of Dr. Ranjit Rath, CMD, OIL & Chairman, NRL; Pankaj Goswami, Director (Operations), OIL; and Ashok Das, Director (HR), OIL at the NRL Corporate Office, Guwahati.

This collaboration signifies a shared commitment to environmental conservation, efficient waste management, and the generation of clean energy. By leveraging the expertise of both OIL and GMC, this initiative aims to contribute significantly to the reduction of carbon footprint and promote a more sustainable and eco-friendly future.

Researchers from the Waste Management Research Group (WMRG) at Indian Institute of Technology -Guwahati led by Prof. Ajay S. Kalamdhad have developed a new approach to assist the municipal corporations to manage organic waste.

The novel two-stage biodegradation technique combines Rotary Drum Composting with Vermicomposting (RDVC), resulting in an efficient and environmentally friendly process and enables municipal corporations to derive value-added products from organic waste. This technique was also used to produce nutrient-rich soil conditioner from invasive aquatic weeds like the Water hyacinth.

Municipal solid waste deposited in open dumpsites often contains over 50% organic material, generating substantial heat due to long-term decomposition. This not only poses environmental challenges but also hinders the achievement of sustainable development goals. Compared to other waste biodegradation techniques that require 2-3 months, Rotary Drum Composting (RDC) can convert diverse organic feedstocks into nutrient-dense compost within just 20 days and significantly reduce the municipal waste volume by 60-70%. However, the limitation of RDC is inferior compost quality. Vermicomposting is a superior biodegradation process that traditionally requires a minimum of 60 days, making the process less adaptable for urban municipal corporations.Speaking about the novel technique Prof. Ajay S. Kalamdhad, Department of Civil Engineering, IIT Guwahati said, “We optimized the Rotary Drum Composting technique and combined it with vermicomposting to reduce the duration of biodegradation. The earthworms, Eisenia fetida, can acclimatise faster to partially degraded organic matter from the drum compost and produce vermicompost in just 27 days.”The microbial composition of the compost was identified with metagenomic analysis. The final product was proven to be non-toxic and safe to be used as a nutrient-rich soil conditioner from waste (4.2% total nitrogen).

The experimental verification of this combined technique was conducted both in the laboratory and on a large scale at the Solid Waste Laboratory of IIT Guwahati. A 5000-litre RDC unit and a 3000-litre stack vermicomposting unit were established to study the large-scale effect of the process, with the moisture content controlled using horticulture waste collected on campus.

Speaking about its application Prof Ajay S. Kalamdhad said, ”This proven technique not only handles sizable quantities of organic waste but also offers immediate application feasibility for Municipal Corporations, Industries, Sewage treatment facilities, aquatic weeds and various organic waste management sectors.”



Source link