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01-09-2012 | ORIGINAL ARTICLE | Issue 3/2012

Journal of Material Cycles and Waste Management 3/2012

Evaluation of the potential methane yield of industrial wastewaters used in bioreactor landfills

Journal:
Journal of Material Cycles and Waste Management > Issue 3/2012
Authors:
Jae Hac Ko, Timothy G. Townsend, Hwidong Kim

Abstract

To increase the moisture content of waste disposed in a bioreactor landfill, it is critical to secure the moisture source. In this study, industrial wastewater was evaluated as a potential moisture source for a bioreactor landfill with respect to the impact on methane generation. Industrial wastewater samples were collected from fishery, brewery and dairy industries. These samples were tested for basic water chemistry parameters, heavy metals, and methane generation using the regular and modified biochemical methane potential (BMP) assays. Despite high sodium and total phosphate concentrations in the fishery wastewater, a significant methane yield was observed (0.313 m3 CH4/kg COD). However, a relatively large amount of fishery wastewater added at the phase of methane generation acceleration adversely affected microbial activity. Samples from the brewery and dairy wastewater did not indicate significant inhibitory effects on methane generation in either the regular or the modified BMP assay. This study demonstrates the utility of wastewater as an alternative to traditional moisture sources when used to enhance methane production in a bioreactor landfill.

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