CATEGORY: WASTEWATER TREATMENT
Bioresource Technology, Volume 136, May 2013,
Pages 322–328
Treatability studies on different refinery
wastewater samples using high-throughput microbial electrolysis cells (MECs)
Lijiao Ren, Michael Siegert, Ivan Ivanov, John
M. Pisciotta, Bruce E. Logan,
Department of Civil and Environmental Engineering, 212 Sackett Building, The
Pennsylvania State University, University Park, PA 16802, USA
Abstract
Researchers employed high-throughput
microbial electrolysis cells (MECs) to conduct treatability studies on a large
variety of refinery wastewater samples all having appreciably different characteristics,
resulting in large differences in current generation.
A de-oiled refinery
wastewater sample from one site (DOW1) produced the best results, with 2.1 ± 0.2 A/m2
(maximum current density), 79% chemical oxygen demand removal, and 82% headspace
biological oxygen demand removal. Two other de-oiled refinery wastewater
samples also showed good performance, with a de-oiled oily sewer sample
producing less current. A stabilization lagoon sample and a stripped sour
wastewater sample failed to produce appreciable current. Electricity
production, organics removal, and startup time improved when the anode was
first acclimated to domestic wastewater. Results demonstrate mini-MECs to be an
effective method for evaluating treatability of different wastewaters.
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