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Modeling organic micro pollutant degradation kinetics during sewage sludge composting.
Waste Manag. 2014 Nov; 34(11):2007-13.WM

Abstract

Degradation of 13 different organic micro-pollutants in sewage sludge during aerobic composting at 5 different temperatures over a 52 day period was investigated. Adequacy of two kinetic models: a single first order, and a dual first order expression (using an early (first 7 days) and a late-time (last 45 days) degradation coefficient), for describing micro-pollutant degradation, and kinetic constant dependency on composting temperature were evaluated. The results showed that both models provide relatively good descriptions of the degradation process, with the dual first order model being most accurate. The single first order degradation coefficient was 0.025 d(-1) on average across all compounds and temperatures. At early times, degradation was about three times faster than at later times. Average values of the early and late time degradation coefficients for the dual first order model were 0.066 d(-1) and 0.022 d(-1), respectively. On average 30% of the initial micro-pollutant mass present in the compost was degraded rapidly during the early stages of the composting process. Single first order and late time dual first order kinetic constants were strongly dependent on composting temperature with maximum values at temperatures of 35-65°C. In contrast the early time degradation coefficients were relatively independent of composting temperature.

Authors+Show Affiliations

Department of Chemistry, Biotechnology and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, 9000 Aalborg, Denmark; Department of Environmental Science, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark; College of Earth & Environmental Sciences, University of the Punjab, 54000 Lahore, Pakistan; Department of Civil Engineering, Xi'an Jiaotong-Liverpool University, Suzhou 215123, China.Department of Chemistry, Biotechnology and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, 9000 Aalborg, Denmark; Department of Civil Engineering, Xi'an Jiaotong-Liverpool University, Suzhou 215123, China.Department of Environmental Science, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark.

Pub Type(s)

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

Language

eng

PubMed ID

25081851

Citation

Sadef, Yumna, et al. "Modeling Organic Micro Pollutant Degradation Kinetics During Sewage Sludge Composting." Waste Management (New York, N.Y.), vol. 34, no. 11, 2014, pp. 2007-13.
Sadef Y, Poulsen TG, Bester K. Modeling organic micro pollutant degradation kinetics during sewage sludge composting. Waste Manag. 2014;34(11):2007-13.
Sadef, Y., Poulsen, T. G., & Bester, K. (2014). Modeling organic micro pollutant degradation kinetics during sewage sludge composting. Waste Management (New York, N.Y.), 34(11), 2007-13. https://doi.org/10.1016/j.wasman.2014.07.001
Sadef Y, Poulsen TG, Bester K. Modeling Organic Micro Pollutant Degradation Kinetics During Sewage Sludge Composting. Waste Manag. 2014;34(11):2007-13. PubMed PMID: 25081851.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Modeling organic micro pollutant degradation kinetics during sewage sludge composting. AU - Sadef,Yumna, AU - Poulsen,Tjalfe Gorm, AU - Bester,Kai, Y1 - 2014/07/28/ PY - 2014/01/22/received PY - 2014/07/01/revised PY - 2014/07/01/accepted PY - 2014/8/2/entrez PY - 2014/8/2/pubmed PY - 2015/6/13/medline KW - Aerobic composting KW - Composting temperature KW - Kinetic models KW - Organic micro-pollutant degradation SP - 2007 EP - 13 JF - Waste management (New York, N.Y.) JO - Waste Manag VL - 34 IS - 11 N2 - Degradation of 13 different organic micro-pollutants in sewage sludge during aerobic composting at 5 different temperatures over a 52 day period was investigated. Adequacy of two kinetic models: a single first order, and a dual first order expression (using an early (first 7 days) and a late-time (last 45 days) degradation coefficient), for describing micro-pollutant degradation, and kinetic constant dependency on composting temperature were evaluated. The results showed that both models provide relatively good descriptions of the degradation process, with the dual first order model being most accurate. The single first order degradation coefficient was 0.025 d(-1) on average across all compounds and temperatures. At early times, degradation was about three times faster than at later times. Average values of the early and late time degradation coefficients for the dual first order model were 0.066 d(-1) and 0.022 d(-1), respectively. On average 30% of the initial micro-pollutant mass present in the compost was degraded rapidly during the early stages of the composting process. Single first order and late time dual first order kinetic constants were strongly dependent on composting temperature with maximum values at temperatures of 35-65°C. In contrast the early time degradation coefficients were relatively independent of composting temperature. SN - 1879-2456 UR - https://www.unboundmedicine.com/medline/citation/25081851/Modeling_organic_micro_pollutant_degradation_kinetics_during_sewage_sludge_composting_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0956-053X(14)00286-4 DB - PRIME DP - Unbound Medicine ER -