Consulta: subjectFacets:"Solid residue"
Registros recuperados: 2
Data/hora: 11/06/2024 03:50:53

CHROMIUM IN SOIL ORGANIC MATTER AND COWPEA AFTER FOUR CONSECUTIVE ANNUAL APPLICATIONS OF COMPOSTED TANNERY SLUDGE
Provedor de dados: 90
Autores: Oliveira,Mara Lucia Jacinto; Araujo,Ademir Sérgio Ferreira de; Melo,Wanderley José de.
Tannery sludge contains high concentrations of inorganic elements, such as chromium (Cr), which may lead to environmental pollution and affect human health The behavior of Cr in organic matter fractions and in the growth of cowpea (Vigna unguiculata L.) was studied in a sandy soil after four consecutive annual applications of composted tannery sludge (CTS). Over a four-year period, CTS was applied on permanent plots (2 × 5 m) and incorporated in the soil (0-20 cm) at the rates of 0, 2.5, 5.0, 10.0, and 20.0 Mg ha-1 (dry weight basis). These treatments were replicated four times in a randomized block design. In the fourth year, cowpea was planted and grown for 50 days, at which time we analyzed the Cr concentrations in the soil, in the fulvic acid, humic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil contamination; Humic substances; Solid residue; Heavy metals; Plant growth; Trace elements.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100297

Plant bioassays to assess toxicity of textile sludge compost
Provedor de dados: 63
Autores: Araújo,Ademir Sérgio Ferreira; Monteiro,Regina Teresa Rosim.
Composting of industrial wastes is increasing because of recycling requirements set on organic wastes. The evaluation of toxicity of these wastes by biological testing is therefore extremely important for screening the suitability of waste for land application. The toxicity of a textile sludge compost was investigated using seed germination and plant growth bioassays using soybean and wheat. Compost samples were mixed with water (seed germination bioassay) or nutrient solution (plant growth bioassay) at concentrations of 0, 19, 38, 76 and 152 g L-1. No negative effects were observed after five days of compost water-extract in relation to soybean and wheat seed germination. After fifteen days, under a hydroponics system, plant growth had harmful effects of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytotoxicity; Seed germination; Solid residue; Hydroponics.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000300013