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The Potential Use of Cassava Peel for Treatment of Mine Water in Mozambique

Journal of Environmental Protection 2017年第3期8卷 277-289页

作者： estevao a.jr.pondja Kenneth M.Persson Nelson P.Matsinhe Department of Building&Environmental Technology Lund UniversityLundSweden Department of Civil Engineering Eduardo Mondlane UniversityMaputoMozambique

In the last decade, Mozambique became one of the top coal producers in Africa. The coal mines are in Moatize district in the center of the country, inside the lower Zambezi river basin. Pollution due to mining activities has negative impacts in agriculture, fishing, water supply, and presents risks to public health. Mozambique is one of the largest cassava producers in the world. More than 1.5 million tons of cassava peel are generated in the country and this agro-waste is discarded. The aim of this study is to discuss the possibility of using cassava peel to treat mine water. Cassava peel can be used as carbon sources for sulfate reducing bacteria in bioremediation, as an adsorbent and as a filter medium. An integrated method is proposed for treatment of mine water in Moatize. It was suggested that applying cassava peel generated in developing countries for treatment of mine water could be a good solution to protect the environment against mining pollution.

关键词： Cassava Peel Bioremediation Adsorption Filtration Mine Water

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A Survey of Experience Gained from the Treatment of Coal Mine Wastewater

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Journal of Water Resource and Protection 2014年第18期6卷 1646-1658页

作者： estevao A.pondja jr. Kenneth M.Persson Nelson P.Matsinhe Department of Building and Environmental Technology Lund UniversityLundSweden Department of Chemical Engineering Eduardo Mondlane UniversityMaputoMozambique

During coal mining, water resources may be polluted by acid mine drainage (AMD) if appropriate measures are not taken. AMD releases metals to the environment, which can be harmful to aquatic species and reduce biodiversity. There is a great deal of information available in the literature on the generation and treatment of AMD and this paper tries to summarize some of them in order to facilitate the choice of the most appropriate method for AMD treatment at a specific mining site. The objective of this study was to identify and describe different methods of treating polluted water from coal mining, and to discuss the choice of suitable methods at specific mining sites. Both active and passive methods of AMD treatment are discussed in order to provide a general picture of the measures that have been taken around the world by coal mining companies. From this study, we were able to conclude that in order to choose the appropriate method for a specific mining site it is necessary to analyze the chemistry of the acid water and the flow rate from that site. The cost, implementability and effectiveness of the method should also be considered. Minimizing the amount of drainage water generated is naturally the first choice of management strategy and the containment of the AMD is the second choice. The third alternative is the treatment of the wastewater.

关键词： Coal Mining Acid Mine Drainage Treatment of Mining Water Passive and Active Treatment

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