Separate recovery of copper and zinc from acid mine drainage using biogenic sulfide

Şahinkaya, Erkan; Gungor, Murat; Bayrakdar, Alper; Yucesoy, Zeynep; Uyanık, Sinan

doi:10.1016/j.jhazmat.2009.06.089

Cited by 84 publications

(44 citation statements)

References 21 publications

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“…In particular, they have recovered iron, aluminum, manganese, copper, zinc, nickel, and cobalt from AMD (Flores et al 2012, Kaksonen and Puhakka 2007, Sahinkaya et al 2009, Tabak et al 2003, Wang et al 2013. Tabak et al (2003) and Sahinkaya et al (2009) studied the recovery of dissolved metals by selective precipitation as metal sulfides via biological methods. Flores et al (2012) reported that iron was recovered as iron oxides (goethite), which was then evaluated as an adsorbent or catalyst.…”

Section: Introductionmentioning

confidence: 99%

Selective recovery of dissolved Fe, Al, Cu, and Zn in acid mine drainage based on modeling to predict precipitation pH

Park

Yoo

et al. 2014

Environ Sci Pollut Res

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Mining activities have caused serious environmental problems including acid mine drainage (AMD), the dispersion of mine tailings and dust, and extensive mine waste. In particular, AMD contaminates soil and water downstream of mines and generally contains mainly valuable metals such as Cu, Zn, and Ni as well as Fe and Al. In this study, we investigated the selective recovery of Fe, Al, Cu, Zn, and Ni from AMD. First, the speciation of Fe, Al, Cu, Zn, and Ni as a function of the equilibrium solution pH was simulated by Visual MINTEQ. Based on the simulation results, the predicted pHs for the selective precipitation of Fe, Al, Cu, and Zn/Ni were determined. And recovery yield of metals using simulation is over 99 %. Experiments using artificial AMD based on the simulation results confirmed the selective recovery of Fe, Al, Cu, and Zn/Ni, and the recovery yields of Fe/Al/Cu/Zn and Fe/Al/Cu/Ni mixtures using Na2CO3 were 99.6/86.8/71.9/77.0 % and 99.2/85.7/73.3/86.1 %, respectively. After then, the simulation results were applied to an actual AMD for the selective recovery of metals, and the recovery yields of Fe, Al, Cu, and Zn using NaOH were 97.2, 74.9, 66.9, and 89.7 %, respectively. Based on the results, it was concluded that selective recovery of dissolved metals from AMD is possible by adjusting the solution pH using NaOH or Na2CO3 as neutralizing agents.

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Section: Introductionmentioning

confidence: 99%

Selective recovery of dissolved Fe, Al, Cu, and Zn in acid mine drainage based on modeling to predict precipitation pH

Park

Yoo

et al. 2014

Environ Sci Pollut Res

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“…However, it is also accompanied by the treatment of metal hydroxide precipitates. Recently, many researchers have studied several advanced methods such as the biogenic sulfide since most base metals in acidic solution precipitate in contact with sulfide [6][7][8][9][10]. Even though, the most popular method for AMD treatment today is still lime neutralization.…”

Section: Introductionmentioning

confidence: 99%

Selective Precipitation of Copper and Zinc over Iron from Acid Mine Drainage by Neutralization and Sulfidization for Recovery

Wang

Ponou

Matsuo

et al. 2014

Int. J. Soc. Mater. Eng. Resour

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In order to selectively precipitate copper (Cu) and zinc (Zn) over iron (Fe) for recovery from an acid mine drainage (AMD) generated from an abandoned copper mine located in east Japan, the feasibility of a treatment process combining lime neutralization with sodium hydrosulfide (NaHS) sulfidization was investigated. First of all, lime neutralization was applied to the AMD to find the precipitation behaviors of Cu, Zn, and Fe. Next, NaHS sulfidization as well as the integration with lime neutralization were conducted to selectively precipitate Cu, Zn, and Fe from the AMD. The results show that by adding more than 20 mg/L NaHS into the AMD at pH 2.8 without pH adjustment, all of the Cu precipitated whereas Fe and Zn did not. Fe could be selectively precipitated over Zn afterwards by lime neutralization at pH 5; however, the addition of an oxidizing agent such as 0.02 vol.% H 2 O 2 was needed. On the other hand, after Fe was fully precipitated previously by lime neutralization at pH 5, all of the Cu precipitated when 10-15 mg/L NaHS was added whereas Zn did not. After Cu and Fe were precipitated, Zn could be precipitated by lime neutralization at above pH 9.

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“…Utgikar et al [12] estimated an EC50 (concentration causing 50% reduction in sulfate reduction activity) value of 10.5 mg Cu 2+ /L for sulfate reduction. Sulfide and alkalinity are generated in the process of sulfate reduction, which induce the precipitation of copper ion and greatly reducing the toxicity of the copper to SRB [8,13,14]. However, bacterially produced precipitates enter the biological reaction system at the same time, changing the growing environment for SRB.…”

Section: Introductionmentioning

confidence: 99%

Effects of bacterially produced precipitates on the metabolism of sulfate reducing bacteria during the bio-treatment process of copper-containing wastewater

Sheng

Cao

et al. 2010

Sci. China Chem.

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A large volume of bacterially produced precipitates are generated during the bio-treatment of heavy metal wastewater. The composition of the bacterially produced precipitates and its effects on sulfate reducing bacteria (SRB) in copper-containing waste stream were evaluated in this study. The elemental composition of the microbial precipitate was studied using electrodispersive X-ray spectroscopy (EDX), and it was found that the ratio of S:Cu was 1.12. Combining with the results of copper distribution in the SRB metabolism culture, which was analyzed by the sequential extraction procedure, copper in the precipitates was determined as covellite (CuS). The bacterially produced precipitates caused a decrease of the sulfate reduction rate, and the more precipitates were generated, the lower the sulfate reduction rate was. The particle sizes of bacterially generated covellite were ranging from 0.03 to 2 m by particles size distribution (PSD) analysis, which was smaller than that of the SRB cells. Transmission electron microscopy (TEM) analysis showed that the microbial covellite was deposited on the surface of the cell. The effects of the microbial precipitate on SRB metabolism were found to be weakened by increasing the precipitation time and adding microbial polymeric substances in later experiments. These results provided direct evidence that the SRB activity was inhibited by the bacterially produced covellite, which enveloped the bacterium and thus affected the metabolism of SRB on mass transfer. sulfate reducing bacteria, covellite, heavy metal wastewater

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Separate recovery of copper and zinc from acid mine drainage using biogenic sulfide

Cited by 84 publications

References 21 publications

Selective recovery of dissolved Fe, Al, Cu, and Zn in acid mine drainage based on modeling to predict precipitation pH

Selective recovery of dissolved Fe, Al, Cu, and Zn in acid mine drainage based on modeling to predict precipitation pH

Selective Precipitation of Copper and Zinc over Iron from Acid Mine Drainage by Neutralization and Sulfidization for Recovery

Effects of bacterially produced precipitates on the metabolism of sulfate reducing bacteria during the bio-treatment process of copper-containing wastewater

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