Tags

Type your tag names separated by a space and hit enter

Changes in metal speciation and pH in olive processing waste and sulphur-treated contaminated soil.
Ecotoxicol Environ Saf. 2008 Jun; 70(2):207-15.EE

Abstract

Degradation of organic matter from olive mill waste and changes in the heavy metal fractionation of a metal-contaminated calcareous soil were studied in a laboratory experiment, in which the olive mill waste was mixed with the soil and then incubated under aerobic conditions. The soil was calcareous (15% CaCO(3)) with high Zn and Pb concentrations (2058 and 2947 mg kg(-1), respectively). The organic amendment was applied at a rate equivalent to 20 g kg(-1) soil, and unamended soil was run as a control. To discern if changes in metal solubility were due to the acidic character of the waste, elemental sulphur was applied to soil as a non-organic acidifying material. The S(0) rates used were 3.14, 4.71 and 6.28 g kg(-1). The mineralisation of total organic-C (TOC) from the waste reached 14.8% of the original TOC concentration after 56 days of incubation. The CO(2)-C produced from S(0)-treated soils showed the carbonate destruction by the H(2)SO(4) formed through S(0) oxidation. The organic waste increased EDTA-extractable Zn and Pb concentrations and CaCl(2)-extractable Mn levels in soil after two days of incubation. The changes in metal availability with time indicated that the oxidation of phenols from the waste reduced Mn (IV) oxides, releasing Zn and Pb associated with this mineral phase. Organic waste addition did not decrease soil pH; the acidifying effect of S(0) did not change metal fractionation in the soil.

Authors+Show Affiliations

Department of Soil and Water Conservation and Organic Waste Management, Centro de Edafología y Biología Aplicada del Segura, CSIC, Campus Universitario de Espinardo, P.O. Box 164, 30100 Espinardo, Murcia, Spain.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17659778

Citation

de la Fuente, C, et al. "Changes in Metal Speciation and pH in Olive Processing Waste and Sulphur-treated Contaminated Soil." Ecotoxicology and Environmental Safety, vol. 70, no. 2, 2008, pp. 207-15.
de la Fuente C, Clemente R, Bernal MP. Changes in metal speciation and pH in olive processing waste and sulphur-treated contaminated soil. Ecotoxicol Environ Saf. 2008;70(2):207-15.
de la Fuente, C., Clemente, R., & Bernal, M. P. (2008). Changes in metal speciation and pH in olive processing waste and sulphur-treated contaminated soil. Ecotoxicology and Environmental Safety, 70(2), 207-15.
de la Fuente C, Clemente R, Bernal MP. Changes in Metal Speciation and pH in Olive Processing Waste and Sulphur-treated Contaminated Soil. Ecotoxicol Environ Saf. 2008;70(2):207-15. PubMed PMID: 17659778.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Changes in metal speciation and pH in olive processing waste and sulphur-treated contaminated soil. AU - de la Fuente,C, AU - Clemente,R, AU - Bernal,M P, Y1 - 2007/07/30/ PY - 2007/03/20/received PY - 2007/05/11/revised PY - 2007/05/27/accepted PY - 2007/7/31/pubmed PY - 2008/11/1/medline PY - 2007/7/31/entrez SP - 207 EP - 15 JF - Ecotoxicology and environmental safety JO - Ecotoxicol. Environ. Saf. VL - 70 IS - 2 N2 - Degradation of organic matter from olive mill waste and changes in the heavy metal fractionation of a metal-contaminated calcareous soil were studied in a laboratory experiment, in which the olive mill waste was mixed with the soil and then incubated under aerobic conditions. The soil was calcareous (15% CaCO(3)) with high Zn and Pb concentrations (2058 and 2947 mg kg(-1), respectively). The organic amendment was applied at a rate equivalent to 20 g kg(-1) soil, and unamended soil was run as a control. To discern if changes in metal solubility were due to the acidic character of the waste, elemental sulphur was applied to soil as a non-organic acidifying material. The S(0) rates used were 3.14, 4.71 and 6.28 g kg(-1). The mineralisation of total organic-C (TOC) from the waste reached 14.8% of the original TOC concentration after 56 days of incubation. The CO(2)-C produced from S(0)-treated soils showed the carbonate destruction by the H(2)SO(4) formed through S(0) oxidation. The organic waste increased EDTA-extractable Zn and Pb concentrations and CaCl(2)-extractable Mn levels in soil after two days of incubation. The changes in metal availability with time indicated that the oxidation of phenols from the waste reduced Mn (IV) oxides, releasing Zn and Pb associated with this mineral phase. Organic waste addition did not decrease soil pH; the acidifying effect of S(0) did not change metal fractionation in the soil. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/17659778/Changes_in_metal_speciation_and_pH_in_olive_processing_waste_and_sulphur_treated_contaminated_soil_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0147-6513(07)00146-7 DB - PRIME DP - Unbound Medicine ER -