Cost analysis and ecological benefits of environmental recovery methodologies in bauxite mining

CERNE

João Carlos Costa Guimarães¹  Dalmo Arantes De Barros¹  José Aldo Alves Pereira²  Rossi Allan Silva¹  Antonio Donizette De Oliveira¹  Luís Antônio Coimbra Borges¹ 

[1] ,Universidade Federal de Lavras Departamento de Ciências Florestais Lavras MG ,Brazil

关键词: Mining;    cost analysis;    environmental restoration;    environmental rehabilitation;    Mineração;    análise de custo;    restauração ambiental;    reabilitação ambiental;   

DOI  :  10.1590/S0104-77602013000100002

来源: SciELO

【 摘 要 】

This work analyzed and compared three methods of environmental recovery in bauxite mining commonly used in Poços de Caldas Plateau, MG, by means of recovery costs and ecological benefits. Earnings and costs data of environmental recovery activities were obtained for the areas that belonged to the Companhia Geral de Minas - CGM, on properties sited in the city of Poços de Caldas, MG. The amount of costs of these activities was used to compare the recovery methods by updating them monetarily to a reference date, in other words, the present moment. It is concluded that the difference between the present value of costs for simple restoration and rehabilitation activities are less than 1% and that between the complete restoration and rehabilitation is about 15.12%, suggesting that the choice of the methods to be used must be based on the ecological earnings proportional to each of them. The methodology of environmental restoration of the mining areas emphasizes the ecological variables in the process of establishment of the community, to the detriment of complex ecological aspects, which show difficulties in measuring the actual moment of the development of the ecosystem considered.

【 授权许可】

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