Research on Immobilization of Heavy Metals in Sludge by Pyrolysis

Fu Sheng Yang; Ming Zhang; An Ning Zhou; Min Qun Lin; Ben Long Wei

doi:10.4028/www.scientific.net/AMR.864-867.1745

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Methyl Violet Degradation by Bamboo Charcoal/Microwave Method
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Research on Immobilization of Heavy Metals in Sludge by Pyrolysis
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 864-867Research on Immobilization of Heavy Metals in...

Research on Immobilization of Heavy Metals in Sludge by Pyrolysis

Abstract:

Variations of heavy metals in sludge during microwave pyrolysis and muffle pyrolysis were analyzed by means of scanning electron microscope (SEM) and inductively coupled plasma atomic emission spectrometer (ICP-AES). Increased basicity of residues from the sludge is found. Leaching percentages of heavy metals ranging from 0.031% to 5.364% after microwave treatment are lower. Releases of cadmium, lead, zinc and copper from the residues obtained in microwave pyrolysis reduce by 92.68% compared with muffle pyrolysis. Alkaline intermediates formed in the pyrolysis residues bring about improved immobilization of heavy metals. Transformation in morphology of heavy metals and strong alkaline of the residues, lead to the immobilization of heavy metals during microwave pyrolysis.

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Periodical:

Advanced Materials Research (Volumes 864-867)

Pages:

1745-1749

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.864-867.1745

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Online since:

December 2013

Authors:

Fu Sheng Yang*, Ming Zhang, An Ning Zhou, Min Qun Lin, Ben Long Wei

Keywords:

Heavy Metal, Immobilisation, Microwave, Sludge

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* - Corresponding Author

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