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Phytotoxicity and speciation of copper, zinc and lead during the aerobic composting of sewage sludge.
J Hazard Mater. 2009 Apr 30; 163(2-3):671-7.JH

Abstract

The content and speciation of heavy metals in composted sewage sludge is the main cause of negative impacts on environment and health of animal and human. An aerobic composting procedure was conducted to investigate the influences of some key parameters on phytotoxicity and speciation of Cu, Zn and Pb during sewage sludge composting. The pH value reached the optimal range for development of microorganisms, and content of organic matter (OM) and dissolved organic carbon (DOC) decreased with the composting age. The total amounts of Cu, Zn and Pb were much lower in the final compost. The results from sequential extraction procedure of heavy metals showed that composting process changed the distribution of five fractions of Cu, Zn and Pb, and reduced the total contents and sum percentages of four mobile fractions (exchangeable (EXCH), carbonate (CAR), reducible iron and manganese (FeMnOX), and organic matter bound (OMB)), indicating that the metal mobility and phytotoxicity decreased after aerobic composting. The seed germination and root growth of Pakchoi (Brassica Chinensis L.) were enhanced with composting age and reached the highest value at the end of compost. The decrease of OM and DOC was significantly correlated to changes of metal distribution and germination index (GI) of Pakchoi. Only for Cu in the compost, the GI could be predictable from the sum mobile metal fractions (EXCH+CAR+FeMnOX+OMB) (R=-0.814(*)). For Zn and Pb, R value was significantly increased by use of other components, such as pH, OM and DOC, which suggested that the transformation of heavy metal speciation and phytotoxicity of sewage sludge during an aerobic composting was rather strongly dependent on multiple components than a single element.

Authors+Show Affiliations

Department of Environmental Engineering, College of Environment and Resources Science, Zhejiang University, Hangzhou 310029, China. hemiaomiao0301@163.comNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18703282

Citation

He, Miao-miao, et al. "Phytotoxicity and Speciation of Copper, Zinc and Lead During the Aerobic Composting of Sewage Sludge." Journal of Hazardous Materials, vol. 163, no. 2-3, 2009, pp. 671-7.
He MM, Tian GM, Liang XQ. Phytotoxicity and speciation of copper, zinc and lead during the aerobic composting of sewage sludge. J Hazard Mater. 2009;163(2-3):671-7.
He, M. M., Tian, G. M., & Liang, X. Q. (2009). Phytotoxicity and speciation of copper, zinc and lead during the aerobic composting of sewage sludge. Journal of Hazardous Materials, 163(2-3), 671-7. https://doi.org/10.1016/j.jhazmat.2008.07.013
He MM, Tian GM, Liang XQ. Phytotoxicity and Speciation of Copper, Zinc and Lead During the Aerobic Composting of Sewage Sludge. J Hazard Mater. 2009 Apr 30;163(2-3):671-7. PubMed PMID: 18703282.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phytotoxicity and speciation of copper, zinc and lead during the aerobic composting of sewage sludge. AU - He,Miao-miao, AU - Tian,Guang-ming, AU - Liang,Xin-qiang, Y1 - 2008/07/11/ PY - 2007/05/19/received PY - 2008/05/16/revised PY - 2008/07/04/accepted PY - 2008/8/16/pubmed PY - 2009/4/14/medline PY - 2008/8/16/entrez SP - 671 EP - 7 JF - Journal of hazardous materials JO - J. Hazard. Mater. VL - 163 IS - 2-3 N2 - The content and speciation of heavy metals in composted sewage sludge is the main cause of negative impacts on environment and health of animal and human. An aerobic composting procedure was conducted to investigate the influences of some key parameters on phytotoxicity and speciation of Cu, Zn and Pb during sewage sludge composting. The pH value reached the optimal range for development of microorganisms, and content of organic matter (OM) and dissolved organic carbon (DOC) decreased with the composting age. The total amounts of Cu, Zn and Pb were much lower in the final compost. The results from sequential extraction procedure of heavy metals showed that composting process changed the distribution of five fractions of Cu, Zn and Pb, and reduced the total contents and sum percentages of four mobile fractions (exchangeable (EXCH), carbonate (CAR), reducible iron and manganese (FeMnOX), and organic matter bound (OMB)), indicating that the metal mobility and phytotoxicity decreased after aerobic composting. The seed germination and root growth of Pakchoi (Brassica Chinensis L.) were enhanced with composting age and reached the highest value at the end of compost. The decrease of OM and DOC was significantly correlated to changes of metal distribution and germination index (GI) of Pakchoi. Only for Cu in the compost, the GI could be predictable from the sum mobile metal fractions (EXCH+CAR+FeMnOX+OMB) (R=-0.814(*)). For Zn and Pb, R value was significantly increased by use of other components, such as pH, OM and DOC, which suggested that the transformation of heavy metal speciation and phytotoxicity of sewage sludge during an aerobic composting was rather strongly dependent on multiple components than a single element. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/18703282/Phytotoxicity_and_speciation_of_copper_zinc_and_lead_during_the_aerobic_composting_of_sewage_sludge_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)01040-6 DB - PRIME DP - Unbound Medicine ER -