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IMPERATIVES FOR A HEALTHY ENVIRONMENT THROUGH BIODEGRADATION OF PLASTIC POLLUTANTS: TOWARDS SUSTAINABLE ENVIRONMENTAL PROTECTION

Abstract

Polythene and Plastic wastes range in types including pure water sachets, cellophane bags, plastic packaging of confectioneries, bakery products, toiletries, laminating materials, soft drinks, pieces of plastic buckets, plates, cups, wrappings etc. They are found in household wastes, refuse dump sites, municipal drainage system, street refuse collections, where they constitute menace; where they constitute serious pollution, health hazard and endangerment to the environment. Removal of these pollutants from the environment is then crux of this research. The microbial degradation of plastic wastes will be determined by measuring changes in physical properties, amount of CO2 evolved or by observation of microbial growth after exposure to biological or enzymatic environments. The effect of amending biodegradation medium with organic and inorganic fertilizers will also be determined. Possible toxic effects on the environment will be assessed by screening for presence of heavy metals.  The overall objective is to ascertain the roles microorganisms can play in waste management; as well as optimum conditions for microbial degradation of plastic pollutants. It is expected that a cost effective, environment-friendly waste disposal system will be developed. This can form a basic research tool necessary for formulation and implementation of policies and programs at the States and Federal Ministries of Environment and related Parastatals and Agencies.

Keywords

Bacillus mycoides, Bacillus subtilis, biodegradation, natural weathering, waste disposal, polyethylene, plastics

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