Chemical analysis of solid waste for agricultural and environmental studies / Analise quimica de residuos solidos para estudos agroambientais

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

The practice of using organic and inorganic wastes as fertilizers is an increasingly important agricultural practice. The risks of indiscriminate disposal of waste onto the soil are associated mainly with the transport of pollutants by the infiltration of percolated liquids, which are responsible for the contamination of the subsoil and underground waters. Before being used in agriculture, the waste must be analyzed to verify if it does not contain substances, including microorganisms, in amounts that can be harmful to the soil and to underground waters. There are relatively few reference methods for the chemical analysis of such wastes. In a general way, the methods recommended for analysis of wastes are those commonly employed for soil analyses. Thus, the objective of the present project is to evaluate and select methods used in soil analysis that could be used to characterize solid inorganic and organic wastes, soil and a mixture of these three. This makes it possible to analyze the viability of agricultural use of different types of waste. The methods evaluated were based on existing procedures used officially in the USA by the EPA (Environmental Protection Agency) and in Brazil by the IAC (Campinas Agronomy Institute) for soil analyses. The results of this agro-environmental study permit the evaluation of the different chemical characteristics of the waste, as well as their potential impact from possible disposal on soil.

ASSUNTO(S)

meta-analises environmental aspects factory waste agriculture agriculture agricultura meta-analysis agricultura - aspectos ambientais residuos industriais

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