Municipal solid waste characteristics and management in Nigeria

Iranian Journal of Environmental Health Science & Engineering 01/2009; 6(3).
Source: DOAJ


Municipal solid waste management has emerged as one of the greatest challenges facing environmental protection agencies in developing countries. This study presents the current solid waste management practices and problems in Nigeria. Solid waste management is characterized by inefficient collection methods, insufficient coverage of the collection system and improper disposal. The waste density ranged from 280 to 370 kg/m3 and the waste generation rates ranged from 0.44 to 0.66 kg/capita/day. The common constraints faced environmental agencies include lack of institutional arrangement, insufficient financial resources, absence of bylaws and standards, inflexible work schedules, insufficient information on quantity and composition of waste, and inappropriate technology. The study suggested study of institutional, political, social, financial, economic and technical aspects of municipal solid waste management in order to achieve sustainable and effective solid waste management in Nigeria.

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    • "Government environmental agencies (Ogwueleka, 2009) but the burden of managing fast growing cities in developing countries is often overwhelming. This is coupled with weak or non-existent chain of custody for handling such wastes. "
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    ABSTRACT: An assessment of the coastal dumpsites and their impacts on shrimp mortality in the Lagos lagoon was investigated. The study involved a census of dumpsites in the major sections of the coastline associated with anthropogenic activities, followed by specific bioassay to determine the acute toxicity of leachates from one of the dump sites. Our investigations revealed that there were 8 major dumping localities with approximately 28 dumpsites generated mostly by deliberate efforts and in some cases by tidal activities which litter the coastline. The major dumping localities were Abule Eledu, Ebute Ilaje, Oworonshoki, Ibese, Offin, Off Ozumba Mbadiwe Road, Iddo and Okobaba. The largest number of dumpsites was recorded at Owonronshoki and Ibeshe, each with 19% of the total dumps while the least number was recorded at Off Ozumba Mbadiwe Road (4%). The major waste categories include fabrics (worn clothes), plastics, wood and wood shavings, glass, metallic objects as well as paper and packaging materials. The acute toxicity assessment of leachates from a dumpsite at Abule Eledu indicated moderate toxicity to brackish water shrimps (Palaemonetes africanus) with 96 hr LC50 value of 93.59% (935.9ml/L). The leachate was found to be high on biological and chemical oxygen demand, conductivity, total dissolved solids, nitrate and sulphate. The findings from this study indicate widespread and unregulated practice of coastal solid waste dumping with potential effects on water quality and biota. The need for improved waste management system in the City of Lagos was discussed. © JASEM
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    • "The municipal solid wastes were collected from Bagamoyo municipality dump located at Sanzale. The waste sample composition is studied and taken from the average composition ratio of the municipal solid waste studied from previous works reported by [11] [31] [32] [33] [34]. This composition will be taken as a standard for the current work. "
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    ABSTRACT: To minimize the pollution from municipal solid waste incinerators, the study of operating conditions is imperative. The local design incinerators can be used for high performance combustion and minimize pollutions. The incinerator located at Bagamoyo hospital in Tanzania is used as a pilot for this experiment. The emission and operating conditions shows that the performance of incinerator is at maximum peak of about 70% when the oxygen at exit is about 6.9% and when secondary temperature is between 1073 and 1173K and primary temperature maintained at 673K. The experiment shows that when the primary chamber temperature increases beyond 673K, the secondary temperature decreases this is due to complete combustion at primary chamber which will cause insufficient incomplete gases and therefore limited combustible gases to burn.
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    • "Similarly, Cristina (2013) study residential solid waste in eight cities in Nigeria revealed that the average majority (about 57.5%) is organic materials. In a summary of data on waste composition for some cities across Nigeria Ogwueleka (2009) also revealed the mean fractions of organic materials is the highest (49.78%) and next is papers (12.79%) while other waste materials are relatively lower. The overview of published literature on municipal solid waste composition in this paper showed organic waste and papers which are both compostable materials constituted majority of the waste streams generated in cities of developing countries. "
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