The present key challenges the world is currently facing are the environmental pollution, climate change and energy crisis. The anthropogenic emissions of carbon dioxide due to burning of fossil fuels for energy production and other greenhouse gas emissions are considered unsustainable, and whole world is having a paradigm shift towards the renewable energy. The one of the major contributor of the greenhouse gases like methane, carbon dioxide are the municipal solid waste landfill sites. The landfill sites contains nearly 50–60% of organic contents, and they undergo anaerobic decomposition with a help microbes in the waste dumps contribute to the higher percent of methane emissions. There is now enhanced public awareness on sustainable products, and commodities usage in their daily needs, hence the global warming can be slowed down and devise an environmentally sound sustainable society. The present study aimed to provide a methodology to quantify the amount of methane and carbon-di-oxide emitted from the Tirupati municipal solid waste dumpsite using LandGEM3.02 model and empirical equation to estimate the renewable energy potential. The method provided was simple and more accurate having higher efficiency in predicting the landfill emissions and subsequently the energy potential. The study shows that the energy emission potential are maximum to the waste with a higher fraction of biodegradable organic content. Therefore, the method can be implemented in all the landfills by the policy makers to predict the methane emissions and control the greenhouse gas emissions by sequestering the methane and carbon dioxide optimally for energy production. • Landfill gases are a primary constituent in greenhouse gases and has potential for energy production. • The results from this study showed an abundant quantity of methane and carbon dioxide are emitted from tripathi landfill site. • The study concludes that methane can be extracted and used as alternative source of sustainable energy.

Electronic waste (e-waste) management has become a significant challenge in recent years due to the increasing consumption of electronic devices and their improper disposal. Effective e-waste management requires a comprehensive approach that considers the environmental, economic, and social impacts of e-waste. This comprehensive review provides a critical assessment of e-waste management procedures, encompassing the stages of collection, transportation, treatment, and disposal. Emphasising the significance of embracing sustainable approaches like reusing, repairing, and recycling, the review underscores their pivotal role in mitigating the adverse environmental and human health effects of e-waste. This review provides an overview of e-waste management concerns specifically in India from its collection to the end cycle including toxicological, environmental, and human impacts and a graphical analysis of current and future e-waste trends. It emphasises the need to effectively enforce regulations and establish extended producer responsibility (EPR) to promote sustainable e-waste management practices. Additionally, the review delves into the complexities surrounding e-waste management, such as insufficient infrastructure, resource and funding constraints, and a dearth of awareness among stakeholders. It strongly underscores the necessity for a concerted endeavour involving governments, industries, and communities to tackle these obstacles and advance the cause of efficient e-waste management practices. This paper is valuable to the scientific community as it offers a thorough assessment of e-waste management, focusing on environmental, economic, and social impacts. It emphasises sustainable practices and regulatory measures, providing actionable insights to address e-waste challenges. Overall, this review provides a comprehensive overview of e-waste management and highlights the importance of adopting sustainable practices to address the negative impacts of e-waste on the environment, human health, and the economy.