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Metal speciation and leachability of heavy metals from Enersludge ash in concrete
Journal article   Peer reviewed

Metal speciation and leachability of heavy metals from Enersludge ash in concrete

V. Wong and G. Ho
Water Science & Technology, Vol.41(8), pp.53-60
2000
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Abstract

The Oil From Sludge (Enersludge™) process converts sewage sludge into hydrocarbons, partially fixing heavy metals in the by-product ash. Research was carried out to investigate the speciation and leaching behaviour of heavy metals (cadmium, copper, chromium, nickel, lead and zinc) when using this ash product in concrete. This was achieved by conducting a sequential extraction procedure, a soluble fraction test and dynamic leach test. Sequential extraction showed that heavy metals in the ash speciated mainly into a stable form. Leachable heavy metals were derived mainly from the concrete (control samples). The soluble fraction test and the dynamic leach test indicated that heavy metals from concrete with Oil From Sludge ash addition exhibited a low leachability.

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#12 Responsible Consumption & Production

Source: InCites

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Citation topics
7 Engineering & Materials Science
7.121 Concrete Science
7.121.26 Advanced Concrete
Web Of Science research areas
Engineering, Environmental
Environmental Sciences
Water Resources
ESI research areas
Environment/Ecology
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