Effect of electron donor source on the treatment of Cr(VI)-containing textile wastewater using sulfate-reducing fluidized bed reactors (FBRs)

Cırık, Kevser; Dursun, Nesrin; Şahinkaya, Erkan; Çınar, Özer

doi:10.1016/j.biortech.2013.01.064

Cited by 50 publications

(17 citation statements)

References 28 publications

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“…Compared with the literature, the kinetic constants obtained in this study are higher than those previously reported under similar, but not identical conditions. [19,20] In this case, the cited reports presented operating conditions that did not include either a low initial pH or the addition of metals. In contrast, our results agree with another report from Camiloti et al, [21] in which copper is added under neutral conditions.…”

Section: Kinetic Analysismentioning

confidence: 85%

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The effect of acidic pH and presence of metals as parameters in establishing a sulfidogenic process in anaerobic reactor

Vieira

Couto

Sancinetti

et al. 2016

Journal of Environmental Science and Health, Part A

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The successful use of anaerobic reactors for bioremediation of acid mine drainage has been shown in systems with neutral pH. However, the choice of an efficient and suitable process for such wastewater must consider the capability of operating at acidic pH and in the presence of metals. This work studies the performance of an anaerobic batch reactor, under conditions of varying initial pH for its efficiencies in sulfate removal and metal precipitation from synthetic acid mine drainage. The chemical oxygen demand/sulfate (COD/SO4(2-)) ratio used was 1.00, with ethanol chosen as the only energy and carbon source. The initial pH of the synthetic drainage was progressively set from 7.0 to 4.0 to make it as close as possible to that of real acid mine drainage. Metals were also added starting with iron, zinc, and finally copper. The effectiveness of sulfate and COD removal from the synthetic acid mine drainage increased as the initial pH was reduced. The sulfate removal increased from 38.5 ± 3.7% to 52.2 ± 3%, while the removal of organic matter started at 91.7 ± 2.4% and ended at 99 ± 1%. These results indicate that the sulfate reducing bacteria (SRB) community adapted to lower pH values. The metal removal observed was 88 ± 7% for iron, 98.0 ± 0.5% for zinc and 99 ± 1% for copper. At this stage, an increase in the sulfate removal was observed, which reaches up to 82.2 ± 5.8%. The kinetic parameters for sulfate removal were 0.22 ± 0.04 h(-1) with Fe, 0.26 ± 0.04 h(-1) with Fe and Zn and 0.44 ± 0.04 h(-1) with Fe, Zn, and Cu.

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Section: Kinetic Analysismentioning

confidence: 85%

“…Cirik et al and Sahinkaya et al [19,20] have studied sulfate removal, including metal precipitation, from synthetic AMD in batch reactors and fluidized bed reactors, respectively. The first work reported pH elevation from 4.0 to 8.0 and 100% of chromium removal by sulfide precipitation.…”

Section: Methodsmentioning

confidence: 98%

The effect of acidic pH and presence of metals as parameters in establishing a sulfidogenic process in anaerobic reactor

Vieira

Couto

Sancinetti

et al. 2016

Journal of Environmental Science and Health, Part A

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show abstract

“…S3 in Supplementary data). R m was calculated according to Equation 1 by filtering pure water through a new membrane and then R f was calculated using Equation 4. R f can also be divided as irreversible (R irv ) and irrecoverable (R irc ) fouling resistances.…”

Section: Characterization Of Membrane Foulingmentioning

confidence: 99%

Performances of anaerobic and aerobic membrane bioreactors for the treatment of synthetic textile wastewater

Yurtsever

Şahinkaya

Aktaş

et al. 2015

Bioresource Technology

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126

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“…Biological reduction of Cr(VI) is an eco-friendly and cost-effective method for remediation of Cr(VI) contamination (Sugiyama et al 2012;Cirik et al 2013). Many new microorganisms that catalyze Cr(VI) to Cr(III) have been isolated from sludge, wastewater, landfill, and soil since the capability of Cr(VI) reduction was first reported on Pseudomonas species in 1977 (Romanenko and Koreńkov 1977).…”

Section: Introductionmentioning

confidence: 99%

Bioreduction of Chromate by an Isolated Bacillus anthracis Cr-4 with Soluble Cr(III) Product

Jian

Liu

et al. 2015

Water Air Soil Pollut

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Microbial Cr(VI) reduction is a significant process in detoxification of Cr(VI) pollution. In this study, a new Cr(VI)-reducing bacterial strain, Cr-4, was isolated from soil around the chromiumcontaining slag. The analysis of the 16S ribosomal RNA (rRNA) gene sequence revealed that the newly isolated strain was closely related to Bacillus anthracis. The response to Cr(VI) stress and reduction capacity of the isolate were investigated. Cell growth decreased with the increase of Cr(VI) concentration. Cell morphology varied and cell growth was inhibited remarkably in the presence of 125 mg/L Cr(VI). The strain grew well and removed Cr(VI) effectively at a Cr(VI) concentration lower than 50 mg/L. Cr(VI)-reducing activity was inhibited by Zn 2+ , while significantly stimulated by Cu 2+ . The activity of Cr(VI) reduction by cell-free extract was demonstrated. Total chromium analysis and the energy-dispersive X-ray analysis (EDAX) spectrum revealed that Cr(VI) removal was caused mainly by microbial reduction rather than by biosorption and the main part of the reduced Cr(III) existed as soluble form in solutions.

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Effect of electron donor source on the treatment of Cr(VI)-containing textile wastewater using sulfate-reducing fluidized bed reactors (FBRs)

Cited by 50 publications

References 28 publications

The effect of acidic pH and presence of metals as parameters in establishing a sulfidogenic process in anaerobic reactor

The effect of acidic pH and presence of metals as parameters in establishing a sulfidogenic process in anaerobic reactor

Performances of anaerobic and aerobic membrane bioreactors for the treatment of synthetic textile wastewater

Bioreduction of Chromate by an Isolated Bacillus anthracis Cr-4 with Soluble Cr(III) Product

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