Abstract
Nigeria just likes every other country in sub-Sahara Africa is faced with solid waste generation and management. Solid waste is dump indiscriminately and seen in huge heaps on any piece of unused land, around buildings, drainage system, institutions, playing ground, roads side, and in the open market places in major cities and towns. Living with solid wastes littered around seems to be an acceptable way of life among the people in this part of the world. This research work reported intensive review on solid wastes generation and management in this region using Nigeria as a case study. The application of knowledge of solid waste generation and management approach is crucial for inculcating a change of attitude towards improving the management of generated solid waste in this region. From the review, it was observed that biodegradable solid waste that can be managed via the biogas technology and landfill technology have the highest percentage fraction while the remaining fraction that comprised of non-biodegradable and combustible solid waste can be managed via other technology such incineration, gasification, pyrolysis, etc. Besides, the inefficient management of generated solid waste by individuals, households, institution, consumers and waste management companies can be attributed to inadequate information on waste management benefits, insufficient academic research and industry linkages, financial constraint, economic constraint, cultural constraint, lack of planning and projection, social constraint, lack of producers’ involvement in waste management as well as poor implementation of government policies and lack of comprehensive legal framework.Keywords: Solid waste generation, solid waste management, biodegradable solid waste, combustible solid waste
Highlights
Projected Urban Solid WasteA total weekly average of 2263.2Kg of domestic solid waste was generated in Lagos metropolis within the period of study
Solid waste is the useless and unwanted substances in solid state, discarded by members of the society
As a result of the quantity of solid waste generated from Nigeria cities and towns due to poor implementation of standards and lack of proper waste management policy, strategic centers of attraction in Nigeria are sometimes taken over by the messy nature of unattended heaps of solid wastes emanating from the society (Fig. 2) (Anwar et al, 2014; Orhorhoro et al, 2017a)
Summary
A total weekly average of 2263.2Kg of domestic solid waste was generated in Lagos metropolis within the period of study Based on this figure, a daily generation rate of 0.57kg per person per day (ppd.) was calculated for Lagos metropolis. A total 5373.61Kg of domestic solid waste was generated within the period in Benin metropolis, Nigeria Base on this figure, a daily generation rate of 0.425kg per person per day (ppd.) was determined and evaluated. Engineering landfill could have been preferable to the open dumpsite but because of the geography of Amassoma being located in oil prone Niger Delta of Nigeria that is largely covered with water, if landfill system is adopted, it can lead to eutrophication For that reason, they recommended integrated waste management programme incorporating recycling, composting and incineration with energy recovery
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