Avaliação de indicadores biológicos e físicoquímicos no composto orgânico produzido a partir de resíduos da indústria de celulose

• Autor(a) principal: Guerra, Marcos Antonio de Souza Lima
• Data de Publicação: 2007
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3208
• topic: Compostos orgânicos; Resíduos sólidos; Indústria de celulose; Indicadores biológicos; Metais pesados organoclorados; Organic compounds; Pulp mill residues; Pulp industry; Biological indicators; Organchlorine heavy metals; CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL::TECNOLOGIA E UTILIZACAO DE PRODUTOS FLORESTAIS::TECNOLOGIA DE CELULOSE E PAPEL

In the last few decades, Brazilian bleached kraft pulp production has been consistently increasing, but public environmental awareness and new stringent environmental legislation has also been increasing due to the fact that there is a large generation of wastes in this industrial process. Composting of organic solid wastes has often been used by the Brazilian mills, and compost can be used directly in the planted forests. The objective of this study was to characterize the organic compost produced from eucalyptus bark mixed with biossolids of a Brazilian pulp mill, and to evaluate the absorption potential of PCDD (polychlorinated dibenzodioxins), PCDF (polychlorinated dibenzofurans) and heavy metals by Brassica juncea cultivated in secondary bio-sludge and compost. The presence of pathogens and other limiting factors were also verified to ensure safe agricultural use of compost of this mill. The following conclusions can be made for the material tested in this study: i) Dioxin and furan levels were far below Canadian and German limits for compost used for agricultural use; ii) No trace of dioxin and furans was found in the plants; iii) OX (organchlorine) levels in compost were below European Community limits for agricultural use; iv) OX levels in bio-sludge were above European Community limits for agricultural use and sludge therefore needs treatment before application; v) Metal concentrations were below limits established in Brazilian legislation; vi) composting completely eliminated the presence of pathogens.