No abstract

This study examined the project planning and control parameters for a public-private partnership sustainable environment and power (SEP) critical infrastructure project (waste-to-energy initiative) in Lagos State, Nigeria, taking into cognisance the state's critical infrastructure planning limitations, and the project's role as model for Nigeria's federal and state governments. State-approved project time and costs were 15 months and US$6 million dollars, respectively. Techno-economic and environmental conversion factors as well as project financial and work schedule data were obtained through literature, questionnaire and site inspection. Project assessment and earned value management (EVM) methodology were used. The results showed annual waste-to-energy generation potentials of 2.37~2.85 TWh for electricity and 4.75 TWh for district heating, electricity revenue of US$187.93~226.0 million, estimated cost at completion of $7.31 million, and estimated completion time of 17 months. The study concluded that in spite of the project being completed over budget and behind schedule, the SEP critical infrastructure project was viable and a suitable template for waste management in Nigeria.

No abstract

No abstract

No abstract

The study focused on Nigeria's polyurethane (PU) production process as a test case. Though it is currently insignificant when viewed from a global perspective, PU production in Nigeria is not eco‐friendly. Traditionally, PU is produced by reacting petro‐based polyol with a poly‐isocyanate, which is made from amines and phosgene and are currently imported into the country. These two materials are detrimental to the human health and environment, indicating that Nigeria's PU industries need to re‐examine their production inputs for environmental compliance. The objective of this study is to review the PU industry for nontoxic reagents that could be sourced locally vis‐à‐vis overcoming sustainable development (greening the economy) challenges in Nigeria. Non‐isocyanate polyurethane (NIPU) is preferred to petro‐polyurethane because, in comparison, NIPU has improved thermal and chemical resistance, porosity and water absorption, and is less toxic. Engaging local resources to produce PU is economically feasible; in addition, NIPU is relatively advantageous to human health and the environment. Aside from being economically feasible, production of NIPU in Nigeria has the propensity to greatly enlarge the growth of the existing PU industry to tremendous heights and contribute to diversifying and improving the overall economy.

No abstract

No abstract