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Abstract
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Article Information:
Earth Construction and Landfill Disposal Options for Slaker Grits
G. Watkins, R. Pöykiö, H. Nurmesniemi and O. Dahl
Corresponding Author: Risto Pöykiö
Submitted: 2010 October, 19
Accepted: 2010 November, 22
Published: 2010 December, 10 |
Abstract:
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Slaker grits, an industrial residue originating from the chemical recovery process at sulfate (kraft)
pulp mills, are typically disposed of to landfill in Finland. However, due to the relatively low total heavy metal
and low leachable heavy metal, chloride, fluoride, sulfate, Dissolved O rganic Carbon (DOC) and Total
Dissolved Solids (TDS) concentrations, the residue is a potential earth construction material. This paper gives
an overview of the relevant Finnish legislation on the use of industrial waste as an earth construction agent, the
classification of waste into one of three classes: hazardous waste, non-hazardous waste and inert waste, as well
as the broad waste policy goals under EU law that affects their management.
Key words: Causticizing, environmental permit, leaching, non-process elements, pulp mill, waste,
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Cite this Reference:
G. Watkins, R. Pöykiö, H. Nurmesniemi and O. Dahl, . Earth Construction and Landfill Disposal Options for Slaker Grits. Research Journal of Applied Sciences, Engineering and Technology, (8): 757-764.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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