Leaching Behavior of Heavy Metals from Cement Pastes Using a Modified Toxicity Characteristic Leaching Procedure (TCLP)

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• 作者：Minrui Huang ; Huajun Feng ; Dongsheng Shen…
• 关键词：Toxicity characteristic leaching procedure (TCLP) ; Leaching ; Heavy metal ; Zinc ; Lead ; Clinker ; pH ; Curing
• 刊名：Bulletin of Environmental Contamination and Toxicology
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：96
• 期：3
• 页码：354-360
• 全文大小：793 KB
• 参考文献：Boughton B (2007) Evaluation of shredder residue as cement manufacturing feedstock. Resour Conserv Recy 51:621–642CrossRef
  Devesa-Rey R, Moldes A, Diaz-Fierros F, Barral M (2008) Toxicity of anllons river sediment extracts using microtox and the zucconi phytotoxicity test. Bull Environ Contam Toxicol 80(3):225–230CrossRef
  Halim CE, Amal R, Beydoun D, Scott JA, Low G (2003) Evaluating the applicability of a modified toxicity characteristic leaching procedure (TCLP) for the classification of cementitious wastes containing lead and cadmium. J Hazard Mater 103:125–140CrossRef
  Halim CE, Short SA, Scott JA, Amal R, Low G (2005) Modelling the leaching of Pb, Cd, As, and Cr from cementitious waste using PHREEQC. J Hazard Mater 125:45–61CrossRef
  Li XD, Poon CS, Sun H, Lo IMC, Kirk DW (2001) Heavy metal speciation and leaching behaviors in cement based solidified/stabilized waste materials. J Hazard Mater 82:215–230CrossRef
  Murat M, Sorrentino F (1996) Effect of large additions of cd, pb, cr, zn, to cement raw meal on the composition and the properties of the clinker and the cement. Cement Concrete Res 26(3):377–385CrossRef
  Peysson S, Pera J, Chabannet M (2005) Immobilization of heavy metals by calcium sulfoaluminate cement. Cement Concrete Res 35:2261–2270CrossRef
  Poon CS, Lio KW (1997) The limitation of the toxicity characteristic leaching procedure for evaluating cement-based stabilised/solidified waste forms. Waste Manage 17:15–23CrossRef
  Us EPA (1996) Environment protection agency office of solid waste. Hazard Waste Character Scoping Study 3:1–3
  Vann KN, Musson SE, Townsend TG (2006) Factors affecting TCLP lead leachability from computer CPUs. Waste Manage 26:293–298CrossRef
  Zhang H, Sun L, Sun T (2012) Leaching of heavy metals from artificial soils composed of sewage sludge and fly ash. Bull Environ Contam Toxicol 88(3):406–412CrossRef
  Zhuang P, McBride MB, Xia H, Li N, Li Z (2009) Health risk from heavy metals via consumption of food crops in the vicinity of Dabaoshan mine, South China. Sci Total Environ 407:1551–1561CrossRef
  
• 作者单位：Minrui Huang (1)
  Huajun Feng (1)
  Dongsheng Shen (1)
  Na Li (1)
  Yingqiang Chen (1)
  Jiali Shentu (1)
  
  1. Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, 198 Jiaogong Road, Hangzhou, 310012, China
  
• 刊物主题：Pollution, general; Environmental Health; Ecotoxicology; Soil Science & Conservation; Environmental Chemistry; Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution;
• 出版者：Springer US
• ISSN：1432-0800

文摘

As the standard toxicity characteristic leaching procedure (TCLP) can not exhaust the acid neutralizing capacity of the cement rotary kiln co-processing solid wastes products which is particularly important for the assessment of the leaching concentrations of heavy metals. A modified TCLP was proposed. The extent of leaching of heavy metals is low using the TCLP and the leaching performance of the different metals can not be differentiated. Using the modified TCLP, however, Zn leaching was negligible during the first 180 h and then sharply increased (2.86 ± 0.18 to 3.54 ± 0.26 mg/L) as the acidity increased (pH < 6.0). Thus, Zn leaching is enhanced using the modified TCLP. While Pb leached readily during the first 126 h and then leachate concentrations decreased to below the analytical detection limit. To conclude, this modified TCLP is a more suitable method for these cement rotary kiln co-processing products.