Browsing by Author "Abba, A.H."

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    Assessing Sustainable Municipal Solid Waste Management Factors for Johor-Bahru by Analytical Hierarchy Process
    (Department of Geography, Nasarawa State University Keffi, 2012-04-01) Nasiru, Idris Medugu; Abba, A.H.; Noor, Z.Z.; Aliyu, A.
    Management of solid waste involves collection, transportation, treatment and safe disposal to landfills. These activities create a lot of impacts to the environment and most of the time impose social and financial burden on authorities handling solid waste management as well as the community. Local authorities managing waste are confronted with problems, protests and resistance from the public because of difference of views and perceptions on impacts created by waste management plans. This paper assesses some environmental, social and economical impacts viewed by stakeholders in the city of Johor Bahru Malaysia. Analytical hierarchy process (AHP), a multicriteria decision making analysis tool is used to evaluate the views of the stakeholders with the aid of super decision software. Stream ecology, flora and fauna, habitat depletion, land use and air quality are ranked higher for environmental factors/impacts. Public awareness health and safety, population size and cooperation from the public dominate the social factors. Regulation, landfill capacity, operation and maintenance cost and capital cost dominate economic factors/impacts. Four alternative disposal plans (landfilling, recycling, incineration, composting) were proposed and ranked according to the priorities of the stakeholders. Incineration and recycling were preferred to landfilling and composting disposal options.
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    Assessing Sustainable Municipal Solid Waste Management Factors for Johor-Bahru by Analytical Hierarchy Process
    (Department of Geography, Nasarawa State University Keffi, 2013-04-01) Nasiru, Idris Medugu; Abba, A.H.; Noor, Z.Z.; Aliyu, A.
    Management of solid waste involves collection, transportation, treatment and safe disposal to landfills. These activities create a lot of impacts to the environment and most of the time impose social and financial burden on authorities handling solid waste management as well as the community. Local authorities managing waste are confronted with problems, protests and resistance from the public because of difference of views and perceptions on impacts created by waste management plans. This paper assesses some environmental, social and economical impacts viewed by stakeholders in the city of Johor Bahru Malaysia. Analytical hierarchy process (AHP), a multicriteria decision making analysis tool is used to evaluate the views of the stakeholders with the aid of super decision software. Stream ecology, flora and fauna, habitat depletion, land use and air quality are ranked higher for environmental factors/impacts. Public awareness health and safety, population size and cooperation from the public dominate the social factors. Regulation, landfill capacity, operation and maintenance cost and capital cost dominate economic factors/impacts. Four alternative disposal plans (landfilling, recycling, incineration, composting) were proposed and ranked according to the priorities of the stakeholders. Incineration and recycling were preferred to landfilling and composting disposal options
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    CHARACTERIZATION OF MICROWAVE –VACUUM DRYING, HOT AIR DRYING AND FREEZE DRYING OF JACKFRUIT (ARTOCARPUS HETEROPHYLUS
    (Department of Geography, Nasarawa State University Keffi, 2013-04-01) Nasiru, Idris Medugu; Abba, A.H.; Taib, M.R.; Mokhtar, M.M.; Ngo, C.L.
    The characterization of microwave vacuum, hot air and freeze drying were compared using jackfruit (Artocarpus heterophyllus Lam) cultivar J31, as raw material. An optimized methodology of the use of microwave vacuum was observed to achieve higher drying rate and enhanced product quality. Microwave vacuum dried products had higher rehydration potential and quality attributes than hot air dried products also. Hot air dried products were brownish to a darker color, caramel odor, and the lowest in rehydration potential among samples dried. Although freeze drying yielded a product with the highest rehydration potential and nutrient retention, the microwave vacuum dried product was rated better than the freeze dried product by sensory panel assessors for colour, flavour, texture and overall preference in both the dehydrated and rehydrated state.
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    AN ENVIRONMENTALLY SUSTAINABLE TECHNIQUE OF ASSESSING CHLORINE IN THE AIR
    (Department of Geography, Nasarawa State University Keffi, 2012-04-01) Nasiru, Idris Medugu; Abba, A.H.; Rafiu, O.Y.; Dodo, Y.A.
    Chlorine is one of the pollutants released during solid waste treatment, chemical process or chemical reaction in some laboratory activities. Ailments of various effects ranging from pollutions caused to the environment, human health and services are some of those recent challenges reported to be caused by the gas. Exposure can cause ailments to skin, eyes and the respiratory tract. In this study, a modified quantification method of chlorine, (Cl2) in indoor air was demonstrated. The acid gas is detected using an "Improved Filtration Process" in which treated filters replaced impingers initially utilized by conventional pollutant gases quantifiers. Experiments were conducted and assessments were based on an indoor air contents. Results indicate the ability of the new method to assess some quantity of chlorine gas within the vicinity. Suitability of the methods were also reviewed and assessed. Based on the results obtained, the improved method was found to be effective and relevant.
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    A REVIEW OF WASTE MANAGEMENT ASSESSMENT METHODS
    (Environmental Science Department, Nasarawa State University, Keffi., 2018-02-08) Kadafa, A.A; Idris, N.M.; Walters, A.; Abba, A.H.
    ssassmew/ methods are common tools to support decisions related to waste management. Despite the fact that the decision to improve waste management will better the condition and health of the people, it is crucial to identify the best sustainable solution. The objective of this review article is to provide a guide for the selection of appropriate evaluation methods. For this purpose,' frequently used assessment methods are reviewed, categorised, and summarised. In total, 100 articles have been considered in view of their goals, methodologies, systems investigated, and results regarding economic, environmental, and social issues. Most articles are based on life cycle assessments, multi-criteria decision-making, cost- benefit analysis, risk assessments, and benchmarking. An objective shared by all articles is the support of stakeholders. Approximately 41% of the reviewed articles are life cycle assessment-based; and more than 50% apply scenario analysis to identify the best waste management options. Most articles focus on municipal solid waste and consider specific environmental loadings. Economic aspects are considered by approximately 50% of the articles, and only a small number evaluate social aspects. The choice of system elements and boundaries varies significantly among the articles; thus, assessment results are sometimes contradictory. Based on the result of this review, the following considerations were recommended: (i) a goal-oriented evaluation of the results of the mass
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    A STUDY ON THE REVIEW OF DROUGHT AND DESERTIFICATION AND THE ROLE OF AFFORESTATION IN PRESERVING THE DRY-LANDS OF NIGERIA
    (Department of Geography, Nasarawa State University Keffi, 2013-04-01) Nasiru, Idris Medugu; Babanyara, Y.Y.; Ibrahim, D.B.; Istifanus, V.; Abba, A.H.; Sangari, D.U.
    Drought and desertification are persistent to degradation of dry land ecosystems by variations in climate and human activities. It threatens the livelihoods of some of the poorest and most vulnerable populations on the planet and is largely caused by unsustainable use of scarce resources and poses one of the greatest environmental challenges today and constitutes a major barrier to meeting basic human needs in dry lands. It also affects biological productivity as well as the livelihoods of millions of people, making the prevention and mitigation of land degradation and desertification through forestry programme a major global challenge. This paper reviewed the concept of drought and desertification, as well as the successes of the afforestation programmes in preserving the Nigerian environment. The finding of this paper reveals that Nigeria is currently losing about 350,000 sq km of its land mass to desert condition and this process is advancing southwards at the rate of 0.6km a year and globally, about 1/3 of the earth’s land surface (4 billion hectares) is threatened by desertification, and over 250 million people are directly affected by desertification. Therefore, combating desertification and land degradation in the dry-lands of Nigeria has global implications. It can contribute to the minimization of global warming/climatic change and minimize the possible effects of de-vegetation, surface reflectivity and surface water transfers. It could also contribute significantly to the minimization of dust particles in the atmosphere that affects rain-forming mechanisms.