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A modified composting process to reduce the mobility and concentration of heavy metals in organic waste
Conference paper   Open access

A modified composting process to reduce the mobility and concentration of heavy metals in organic waste

Goen Ho and H. Hofstede
1st National Hazardous and Solid Waste Convention (Darling Harbour, Sydney, 29/03/1992–02/04/1992)
01/04/1992
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Abstract

composting heavy metals domestic waste Waste management, reduction, reuse and recycling Environmental engineering Environmentally sustainable commercial services and tourism Waste management services
The paper addresses the problem related to heavy metal contaminated domestic compost. Heavy metals are complexed in the organic fraction and are released during decomposition. Experiments on batch and pilot scale plant scale were done whereby a modified clay was added to organic waste before composting, in order to reduce the long term metal mobility by metal adsorption in the inorganic fraction. The metal mobility was observed to be reduced considerably for various heavy metals, reducing plant and soil solution availability as well as acid extractability. The compost process was not affected.

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