Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10505481 | Journal of Environmental Management | 2011 | 5 Pages |
Abstract
Biological sulfate reduction was studied in a laboratory-scale anaerobic sequential batch reactor (14 L) containing mineral coal for biomass attachment. The reactor was fed industrial wastewater with increasingly high sulfate concentrations to establish its application limits. Special attention was paid to the use of butanol in the sulfate reduction that originated from melamine resin production. This product was used as the main organic amendment to support the biological process. The reactor was operated for 65 cycles (48 h each) at sulfate loading rates ranging from 2.2 to 23.8 g SO42â/cycle, which corresponds to sulfate concentrations of 0.25, 0.5, 1.0, 2.0 and 3.0 g SO42â Lâ1. The sulfate removal efficiency reached 99% at concentrations of 0.25, 0.5 and 1.0 g SO42â Lâ1. At higher sulfate concentrations (2.0 and 3.0 g SO42â Lâ1), the sulfate conversion remained in the range of 71-95%. The results demonstrate the potential applicability of butanol as the carbon source for the biological treatment of sulfate in an anaerobic batch reactor.
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Authors
Arnaldo Sarti, Marcelo Zaiat,