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Waste management has been a chronic environmental challenge in Nigeria, coupled with declining economic performance due to energy crises. This study was designed to estimate electricity potential of sewage sludge to meet the 2030 Renewable Energy target. However, there was a need to fill the gap in data related to wastewater management in Nigeria. The wastewater and sludge generated from households were evaluated based on data on population, access to water, and coverage of sewer networks. Consequently, the technical and economic feasibility of electricity generation was assessed using Anaerobic Digestion (AD) 1 and Incineration (INC) 2 scenarios. The core results found that North Central had the highest potential for wastewater generation (142.8-403.6 billion litres/yr) and collection (8.3-37.5 billion litres/yr) over 20 years. However, the South East had the highest average sewer collection rate of 9.08 %. The AD technology was the most technically viable, with a maximum generation of 6.8 GWh/yr in the North Central. In comparison, the INC outperformed AD in most of the financial viability indicators considered viz-a-viz: Life Cycle Cost (LCC), 3 Net Present Value (NPV), 4 Pay Back Period (PBP), 5 Internal Rate of Return (IRR), 6 Levelized Cost of Energy (LCOE). 7 The AD had a higher NPV of 16.3-69.58 million USD and a shorter PBP of about 4 years. The INC had a lower LCC of 0.1-0.34 million USD, LCOE of 0.046-0.094 USD/kWh, and a higher IRR of 19.3-25 %. Additionally, the sensitivity of NPV and INC to changes in economic factors would be noteworthy for investors and policymakers. Ultimately, the choice of technology should reflect the fiscal goal and priorities of a project., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier B.V. All rights reserved.)

Currently, there is an alarming increase in food insecurity during the COVID-19 pandemic in many countries throughout the world. This will be seen particularly in the countries of the Global South (developing countries). Many countries are trying to show efforts to keep agriculture, food industry and markets running, the supply chains and access to the markets and affordable food is still not secured. Disruptions caused by the COVID-19 pandemic are going to/or already have affected the poor and other marginalised groups, mainly those with less purchasing power. It is necessary to mitigate the pandemic's impacts across the food system, enhance the resilience of food systems and avoid any potential food shortages. Therefore, this paper provides an overview of past pandemics and tries to synthesise the main lessons learned from these while also outlining visions of post-COVID-19 agriculture and the effects on food security., Competing Interests: The authors declared that they have no conflict of interest., (© 2022 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.)