Data/hora: 13/06/2024 04:37:37

Provedor de dados: | 90
País: | Brazil
Título: | Tannery and coal mining waste disposal on soil
Autores: | Kray,Claudio Henrique; Tedesco,Marino José; Bissani,Carlos Alberto; Gianello,Clesio; Silva,Kelly Justin da.
Data: | 2008-12-01
Ano: | 2008
Palavras-chave: | Chromium tannery sludge; Leather shavings; Coal mine; Heavy metal.
Resumo: | Tannery residues and coal mine waste are heavily polluting sources in Brazil, mainly in the Southern States of Rio Grande do Sul and Santa Catarina. In order to study the effects of residues of chrome leather tanning (sludge and leather shavings) and coal waste on soybean and maize crops, a field experiment is in progress since 1996, at the Federal University of Rio Grande do Sul Experimental Station, county of Eldorado do Sul, Brazil. The residues were applied twice (growing seasons 1996/97 and 1999/00). The amounts of tannery residues were applied according to their neutralizing value, at rates of up to 86.8 t ha-1, supplying from 671 to 1.342 kg ha-1 Cr(III); coal waste was applied at a total rate of 164 t ha-1. Crop yield and dry matter production were evaluated, as well as the nutrients (N, P, K, Ca, Mg, Cu and Zn) and Cr contents. Crop yields with tannery sludge application were similar to those obtained with N and lime supplied with mineral amendments. Plant Cr absorption did not increase significantly with the residue application. Tannery sludge can be used also to neutralize the high acidity developed in the soil by coal mine waste.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832008000700035
Editor: | Sociedade Brasileira de Ciência do Solo
Relação: | 10.1590/S0100-06832008000700035
Formato: | text/html
Fonte: | Revista Brasileira de Ciência do Solo  v.32 n.spe 2008
Fonte: | info:eu-repo/semantics/openAccess