Publications by authors named "Rickwinder Singh"
Microwave (MW) heating has gained significant attention in food industries and biomass-to-biofuels through pyrolysis over conventional heating. However, constraints for promoting MW heating related to the use of different MW absorbers are still a major concern that needs to be investigated. The present study was conducted to explore the MW heating performance of biochar as a low-cost MW absorber for performing pyrolysis.
View Article and Find Full Text PDFFood, energy, and water resources are intricately interconnected, and nexus provides a holistic approach for addressing these complex links to minimize inefficiencies and waste. Nexus approach and circular economy are considered as effective solutions for sustainability. Quantification of these relations is the first step towards incorporating nexus modeling which helps sustainable production and consumption.
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- The study investigated the use of Pleurotus ostreatus (PO) fungi to pre-treat a mix of agro-wastes (wheat straw, rice straw, and pearl millet straw) combined with varying percentages of biochar to speed up the pre-treatment process for anaerobic digestion.
- Results showed that the highest lignin removal (40.4%) occurred in the mixed agro-waste group, significantly improving pre-treatment efficiency compared to untreated samples, while biochar reduced the pre-treatment duration.
- The combination of these methods led to a 83.33% increase in biomethane yield from spent mushroom substrate, demonstrating the potential for enhanced energy and food production with reduced reliance on single biomass sources.
The exponential generation of municipal solid waste (MSW) and landfill disposal without any treatment has increased the continuous generation of landfill leachate. Improper MSW and leachate management are contributing to environmental degradation and water and soil pollution, which must be treated. Numerous works have been conducted on leachate treatments for energy and resource recovery.
View Article and Find Full Text PDFEnergy demands and immense environmental degradation have extorted for production of low-carbon and carbon-neutral fuels. Abundantly available lignocellulosic biomass is second-generation feedstock which has potential to produce biofuels. Among all biofuels, biohydrogen is carbon neutral and sustainable biofuel which can be produced by thermochemical conversion routes mainly gasification.
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- - Agricultural and food waste is a growing environmental concern, but it can be converted into renewable fuels through processes like anaerobic digestion and pyrolysis.
- - The proposed integrated system combines these methods to produce biochar and pyro-oil from digestate, supporting both biogas purification and soil health.
- - This approach promotes a circular bioeconomy, while also highlighting the need for further research on kinetic models and techno-economic analysis to improve sustainability and carbon capture.