This study was conducted to determine the heavy metals concentration in soil andFurthermore, the study revealed that some areas of the sample site were more polluted by a particular metal than the other due to the prevailing anthropogenic activities in the area, and that all areas of the site run the risk of pollution by Cd, Cr and Fe in vegetables.

Municipal solid waste management has emerged as one of the greatest challenges facing environmental protection agencies in developing countries. This study assessed the current solid waste management practices, problems and management in Maitama District, Abuja. The objectives of the study were to identify the structure of solid waste management and the sustainability of the process from generation to disposal. The research made use of structured questionnaires which were administered to residents of Maitama District, Abuja. The study revealed that women are more involved than men in the management of the heterogeneous waste in the study area. Although respondents recommended the services of waste collectors as 98% of them adjudged their services as satisfactory. There is still the problem of poor attitude to payment by residents of the area. The study therefore recommends that there should be more effective involvement of the private sector and greater integration of the informal sector, composting of biodegradable wastes and increased waste recycling and resource recovery can be areas for further development and better means of collection of waste charges should be developed in the study area.

Assessment of potential open burning of agricultural crop residue of post-harvest waste generations in Biu local government areas of Borno State, Nigeria was estimated. This is with a view of knowing the types, quantity and strength of these crop residues generated annually in the study area. The method adopted was field survey and focused group discussion of and the result collected. The total hectares of land cultivated for the major crop selected from the host communities were estimated to be 1450ha. in the year under study. From the study, maize, millet and rice are being produced in large quantity in the place visited. For maize alone in ten communities, 140 tonnes of waste is produced, 118 tonnes of sorghum, 115 tonnes of millet, 111 tonnes of rice and 53 tonnes of cowpea waste is produced. The major management measure adopted is burning which is not environmentally friendly. The annual quantity of agricultural crop residues generated for burning in these communities is estimated to be 381 tons. Among the entire communities selected, Maina Hari has the highest hectares of land cultivated during the period of field survey followed by Mangada and Mandafuma. The survey also revealed that farmers have difficulties in accessing information on environmental health hazard of open burning of agricultural waste. While some even lack any knowledge about health risk of burning crops residue, apart from increasing soil fertility to their farm and also facilitate land clearing prior to raining season. Regulatory efforts should focus on the identification and control of environmental airborne sources of pollution resulting from burning activities, which are currently the major origin of food chain contamination.

The management of solid wastes in Nigeria and other African Countries has become a very big challenge, the problem of waste generation, handling and disposal has reached a disturbing level in Nigerian urban centers. The study analyzed domestic solid waste management strategies in Tunga, Niger State, Nigeria which was achieved through characterizing the types of domestic solid wastes generated, examining the domestic solid waste management strategies employed, identifying the key players in domestic solid waste management and ascertaining the effectiveness of the domestic solid waste management strategies employed in the study area. The primary data used in this study was obtained by direct field observations, questionnaire administration and oral interviews while the secondary data was obtained from books, journals, published and unpublished texts, documents, conference articles, government ministries and agencies. 327 out of 2040 households were sampled. The results showed that the nature of domestic solid wastes generated in the study area were mainly organic, paper, plastic, old and rusted metals and textile wastes while the domestic solid waste management strategies in place were burning, open dumping and burying, with open dumping being the most common domestic solid waste management strategy practiced in the study area. It was also observed that the key players involved in the management of solid wastes were the government and individual households and the rate of waste generation was found to exceed the rate of waste disposal in the study area. Also the daily generation of waste (about 74%) exceeded the daily disposal of wastes (about 49%) in the study area. 63% of the respondents reported that burning of domestic solid waste is effective, 84% reported that burying domestic solid wastes is effective while 14% reported that open dumping of domestic solid wastes is effective. The Chi Square analysis showed a significant difference between the frequency of wastes generated and waste disposed in the study area with an alpha value of 0.01, while the Kruskal Wallis H test showed no significant difference in the effectiveness of the domestic solid waste management strategies in the study area (α= 0.646).

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