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Potential of thermal treatment for decontamination of mercury containing wastes from chlor-alkali industry.

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Journal of hazardous materials

Elsevier BV

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      Abstract

      Old dumps of mercury waste sludges from chlor-alkaline industry are an environmental threat if not properly secured. Thermal retortion can be used to remove mercury from such wastes. This treatment reduces the total mercury content, and also may reduce the leachability of the residual mercury. The effects of treatment temperature and treatment time on both residual mercury levels and mercury leachability according to the US EPA TCLP leaching procedure, were investigated. Treatment for 1h at 800°C allowed to quantitatively remove the mercury. Treatment at 400°C and above allowed to decrease the leachable Hg contents to below the US EPA regulations. The ultimate choice of treatment conditions will depend on requirements of further handling options and cost considerations.

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      Author and article information

      Affiliations
      [1 ] Departamento de Ingeniería Química, Universidad Central Marta Abreu de las Villas, Santa Clara, Cuba.
      Journal
      J. Hazard. Mater.
      Journal of hazardous materials
      Elsevier BV
      1873-3336
      0304-3894
      Feb 15 2011
      : 186
      : 1
      21093149
      S0304-3894(10)01387-7
      10.1016/j.jhazmat.2010.10.099

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