Chemistry

Summaries of Chemistry Studies

Chemistry

Quality: low calorific value and high ash (47 to 58%) and sulfur (1 to 4.7%) contents (jica, 1995). the main activities of coal mining (exploration, development, extraction, concentration, processing, refinement and deactivation) have a variety of impacts, which include soil damage, air pollution and water contamination (mcallister and milioli, 2000). areas that have been explored but not rehabilitated are a source of water pollution. this is mainly because of acid mine drainage (amd), due to pyrite oxidation (fes ). when pyrite is in contact with oxygen and water, highly concentrated

HIGHLIGHTS who: Resumo Objetivo Avaliar a et al. from the Universidade Estadual Paulista, UNESP, Av, março, Alto Boa Vista, CEP,

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