title: Textile sludge application to non-productive soil: physico-chemical and phytotoxicity aspects.
abstract: As part of an assessment study on the risk of spreading textile sludge onto non-productive soil, the sorption behaviour of some sludge-metal constituents [Cr(VI), Cu(II), Pb(II), and Zn(II)] in the soil was studied. In addition, the sludge stabilization effect was evaluated by the biodegradation of organic compounds and phytotoxicity tests. Metal-soil sorption was assessed using soil columns and by sorption isotherms (i.e., Freundlich and Langmuir). In relation to the phytotoxicity of Eruca sativa L., there was a biomass inhibitory effect for the fresh sludge and a biomass stimulant effect for the stabilized sludge. Thus our results show that after stabilization, the tested loading ratio of 33% sludge: 67% soil (v/v) (equivalent to 85 Mg ha(-1)) did not significantly increase the risk of groundwater contamination since only small amounts of metals applied to the soil underwent percolation and almost all the organic compounds were degraded.
authors.affiliation: Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil.
authors.forename: Edson V C
authors.initials: EV
authors.lastname: Rosa
authors.forename: Luciana
authors.initials: L
authors.lastname: Mater
authors.forename: Maria M
authors.initials: MM
authors.lastname: Souza-Sierra
authors.forename: Leonardo R
authors.initials: LR
authors.lastname: Rörig
authors.forename: Luciane M
authors.initials: LM
authors.lastname: Vieira
authors.forename: Claudemir M
authors.initials: CM
authors.lastname: Radetski
mesh_terms: D018533:Biomass; D019607:Brassicaceae / Q000187:drug effects* / Q000254:growth & development; D003247:Conservation of Natural Resources; D005308:Fertilizers; D007220:Industrial Waste / Q000009:adverse effects*; D008670:Metals / Q000737:chemistry; D018570:Risk Assessment; D012722:Sewage / Q000009:adverse effects* / Q000737:chemistry; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000737:chemistry* / Q000633:toxicity*; D012995:Solubility / Q000187:drug effects; D013783:Textile Industry; D018675:Toxicity Tests
chemical_list: D005308:Fertilizers; D007220:Industrial Waste; D008670:Metals; D012722:Sewage; D012989:Soil Pollutants