Sulfidogenic fluidized bed treatment of real acid mine drainage water

Şahinkaya, Erkan; Gunes, Fatih M.; Uçar, Deniz; Kaksonen, Anna H.

doi:10.1016/j.biortech.2010.08.042

Cited by 89 publications

(36 citation statements)

References 15 publications

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“…In biological treatments, sulfur‐reducing bacteria generate H 2 S, which subsequently causes the precipitation of metals as sulfides . This novel approach has been subject to extensive research during the last few years …”

Section: Acid Mine Drainagementioning

confidence: 99%

Environmental aspects of metals removal from waters and gold recovery

et al. 2015

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in Wiley Online Library (wileyonlinelibrary.com) Mining and metals processing are not invisible activities and are heavy industries, which require energy, water, chemicals, and land area. Recently more emphasis is given to environmental and societal aspects in mining and processing. Development of good practices with improved resource efficiency, new recovery methods and sustainability thinking are increasingly required. This work shows pH titration method for acid mine drainage (AMD) water incorporated with aqueous thermodynamic model for selective metals precipitation from complex solution. Also two examples on gold recovery methods from aqueous streams are shown: biosorption using fungal matter and solvent extraction using a taskspecific ionic liquid. By understanding chemical thermodynamics and natural phenomena, there is a better chance of developing solutions for environmental problems and new industrial processes.

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Section: Acid Mine Drainagementioning

confidence: 99%

Environmental aspects of metals removal from waters and gold recovery

et al. 2015

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“…The sulfide produced would react with the metals in solution, precipitating in the form of metal sulfides . It has also been demonstrated that Cu, chromium (Cr), nickel (Ni), iron (Fe), aluminum (Al), lead (Pb), and zinc (Zn) in wastewater can be successfully removed using SRB . However, there remain several technical problems in industrial application.…”

Section: Introductionmentioning

confidence: 99%

“…14 It has also been demonstrated that Cu, chromium (Cr), nickel (Ni), iron (Fe), aluminum (Al), lead (Pb), and zinc (Zn) in wastewater can be successfully removed using SRB. [15][16][17][18] However, there remain several technical problems in industrial application. First, there is often insufficient organic matter in natural acid mine www.soci.org Y Li et al…”

Section: Introductionmentioning

confidence: 99%

Effective bioremediation of Cu(II) contaminated waters with immobilized sulfate‐reducing bacteria‐microalgae beads in a continuous treatment system and mechanism analysis

Xiao-hu

Geng

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Microalgae which have greater biodegradable fractions than other organics were chosen as a carbon source for sulfate‐reducing bacteria (SRB). Immobilized SRB–microalgae beads were then prepared and used for bioremediation of synthetic copper mine wastewater. RESULTS Hydrolysis fermentation of the microalgae was observed and it was noted that the microalgae were first degraded to volatile fatty acids by co‐existing fermentative bacteria; they then served as a carbon source for SRB. Freshly prepared immobilized SRB beads not only possessed high mechanical strength and mass transfer ability, but also showed better sulfate reduction than that of suspended SRB. Immobilized SRB‐Scenedesmus obliquus beads packed in the upflow bioreactor were suitable for the treatment of copper mine wastewater, as shown by the high removal efficiency of their sulfate (182.17 mg SO42‐ g‐1 microalgae day‐1) and copper ions (45.28 mg Cu2+ g‐1 microalgae day‐1), and low discharge of chemical oxygen demand. After the reaction, metal sulfides were not produced on the bead surfaces, but likely within them. CONCLUSIONS The anaerobic bioreactor, filled with immobilized SRB‐Scenedesmus obliquus beads, demonstrated excellent removal efficiency and low discharge of chemical oxygen demand, which may provide a promising strategy for dealing with heavy metal pollution in water. © 2017 Society of Chemical Industry

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“…Measurement of the dissolved metal concentration can serve as an indicator of the SRB bioactivity, and heavy metal removal is a useful application of biological sulfate reduction. Sulfide generated by sulfate reduction is used to chemically precipitate metals as sulfides (Kaksonen et al, 2003b;Sahinkaya et al 2011;Utgikar et al 2002;Villa-Gomez et al, 2012;Xingyu et al, 2013), as shown in Eq.1 (Villa-Gomez et al, 2012):…”

Section: Introductionmentioning

confidence: 99%

Acid Mine Drainage Treatment and Metal Removal Based on a Biological Sulfate-Reducing Process

Neto

Aguiar

Rodriguez

et al. 2018

Braz. J. Chem. Eng.

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The key purpose of this research was to explore the capacity of an anaerobic stirred batch reactor (ASBR) to deal with acid mine drainage (AMD) based on the activity of sulfate reducing bacteria (SRB). The tests showed that SRB produced hydrogen sulfide that precipitated the metals Fe 2+ , Zn 2+ , and Cu 2+ . Ethanol was used as both the only source of carbon and electron donor. Throughout the experiment, the ratio of chemical oxygen demand (COD) to sulfate was constant at 1.0. The reactor was operated for 218 days using synthetic AMD at pH 4.0 containing 1000 and 1500 mg·L -1 of sulfate,100 mg·L -1 of Fe 2+ , 20 mg·L -1 Zn 2+ , and 5 mg·L -1 Cu 2+ . The metal removal rates were greater than 99 %with effluent pH of 6.5 to 7.4. The sulfide concentration reached 56.6 mg·L -1 and sulfate removal was 43 to 65 %.

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Sulfidogenic fluidized bed treatment of real acid mine drainage water

Cited by 89 publications

References 15 publications

Environmental aspects of metals removal from waters and gold recovery

Environmental aspects of metals removal from waters and gold recovery

Effective bioremediation of Cu(II) contaminated waters with immobilized sulfate‐reducing bacteria‐microalgae beads in a continuous treatment system and mechanism analysis

Acid Mine Drainage Treatment and Metal Removal Based on a Biological Sulfate-Reducing Process

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