title: Elements availability in soil fertilized with pelletized fly ash and biosolids.
abstract: The aim of the study was to evaluate the impact of combined and pelletized industrial residues on availability and mobility of nutrients and potentially toxic elements in soil, plant growth and element uptake. Plant pot experiments were carried out using soil to which 2% of pelletized residue containing biosolids mixed with either municipal solid waste incineration fly ash (MFA) or biofuel fly ash (BFA) was added. The tests showed that the plant growth did not correspond to the content of available nutrients in fertilised soil. MFA application to soil resulted in elevated concentrations of P (506 mg/kg), As (2.7 mg/kg), Cd (0.8 mg/kg) and Pb (12.1 mg/kg) in soil, lower plant uptake of Al (25 mg/kg) and Ba (51 mg/kg), but higher accumulation of As (4.3 mg/kg) and Cd (0.3 mg/kg) in plants compared to the unamended soil and soil amended with BFA. On average, the biomass of the plants grown in the soil containing MFA was larger than in other soils. Considering the use of industrial residue mixtures as soil amendments or fertilizers, the amount of added elements should not exceed those taken up by plants, by this preventing the increase of soil background concentrations.
authors.affiliation: Waste Science & Technology, Luleå University of Technology, 97187 Luleå, Sweden. Electronic address: evelina.brannvall@ltu.se.
authors.forename: Evelina
authors.initials: E
authors.lastname: Brännvall
authors.affiliation: Waste Science & Technology, Luleå University of Technology, 97187 Luleå, Sweden.
authors.forename: Martin
authors.initials: M
authors.lastname: Wolters
authors.affiliation: Waste Science & Technology, Luleå University of Technology, 97187 Luleå, Sweden; Tekedo AB, Spinnarvägen 10, 611 37 Nyköping, Sweden.
authors.forename: Rolf
authors.initials: R
authors.lastname: Sjöblom
authors.affiliation: Waste Science & Technology, Luleå University of Technology, 97187 Luleå, Sweden.
authors.forename: Jurate
authors.initials: J
authors.lastname: Kumpiene
mesh_terms: D056804:Biofuels; D018533:Biomass; D060729:Coal Ash / Q000032:analysis / Q000737:chemistry; D005308:Fertilizers / Q000032:analysis*; D017745:Incineration; D010758:Phosphorus / Q000032:analysis; D063245:Plant Development; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis* / Q000737:chemistry; D062611:Solid Waste
chemical_list: D056804:Biofuels; D060729:Coal Ash; D005308:Fertilizers; D012987:Soil; D012989:Soil Pollutants; D062611:Solid Waste; D010758:Phosphorus
keywords: Fly ash; Pellets; Plant uptake; Pore water; Rhizosphere; Sequential extraction