Simulated acid mine drainage treatment in iron oxidizing ceramic membrane bioreactor with subsequent co-precipitation of iron and arsenic

Demir, Emir Kasım; Yaman, Belma Nural; Çelik, Pınar Aytar; Puhakka, Jaakko A.; Şahinkaya, Erkan

doi:10.1016/j.watres.2021.117297

Cited by 18 publications

(2 citation statements)

References 39 publications

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“…The oxidation method is only applicable in AMD containing more Fe 2+ and can only promote the formation of minerals from some of the Fe and sulfate, as the energy generated during the oxidation process is insufficient to activate all of the Fe 3+ and SO 4 2− to form IHSMs [15]. Moreover, the process of mineralization is acid-enhancing as, for example, in the process of the formation of schwertmannite (Equation ( 1)), which can also hinder the production of IHSMs [16]…”

Section: Introductionmentioning

confidence: 99%

Potassium-Bicarbonate-Induced Mineralized Acid Mine Drainage into Iron Hydroxyl Sulfate Minerals for Better Water Remediation and Resource Reuse

He,

Wang,

Tang

et al. 2024

Sustainability

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Iron hydroxyl sulfate minerals (IHSMs, including schwertmannite and jarosite) are a promising material for environmental applications with excellent adsorption of metal oxygen anions. The acid mine drainage (AMD) abundant in iron and sulfate ions holds potential for the production of valuable IHSMs, thereby achieving resource recycling whilst simultaneously mitigating water contamination, which is important for the sustainable remediation of AMD. Conventional mineralization, which promotes the generation of minerals from Fe3+ and SO42− through the energy provided by chemical or biological oxidation, can only partially mineralize iron in AMD containing substantial quantities of Fe2+. In this study, an improved method for mineralizing AMD containing iron of a different valence into IHSMs under the induction of KHCO3 was proposed. For AMD containing Fe2+, the combination of KHCO3 and H2O2 was used to promote the hydrolysis of iron (92.7%) and sulfate (11.1%) into IHK minerals, which resulted in a significant increase in iron removal of 75.2% and a minor increase in sulfate removal of 4.9%, compared with the formation of schwertmannite from oxidation solely involving H2O2. For the AMD containing Fe3+, the energy generated by the acid–base reaction in water could also directly promote the formation of IK minerals from 97.2% iron and 6.9% sulfate. XRD and FTIR analyses confirmed the identification of the IHK and IK minerals as IHSMs transitioning from schwertmannite to jarosite. SEM and elemental analyses indicated that the mineral exhibited denser aggregate spheres with the incorporation of KHCO3 in mineralization yet displayed enhanced mineralization abilities for the contaminant ions in AMD. Moreover, despite the SSA of the modified minerals being diminished (2.02, 1.83 and 1.83 m2/g for IH, IHK and IK, respectively), the presence of more sulfate in the mineral enhanced the adsorption capacity of Cr(VI). Furthermore, the water quality results also illustrated that the removal ratios of iron and sulfate in AMD notably increased with the involvement of KHCO3 in mineralization. In conclusion, the KHCO3-induced mineralization of iron-containing (either divalent or trivalent) AMD into IHSMs not only improved the mineralization ratios and contaminant removal ratios for better remediation of AMD but also obtained mineral resources with better adsorption of Cr(VI), thereby fostering the sustainable advancement of the remediation of AMD. Therefore, this innovative strategy employing KHCO3-assisted chemical mineralization to form IHSMs holds ample potential and promises to be an efficacious methodology for the sustainable remediation of iron-rich AMD.

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Section: Introductionmentioning

confidence: 99%

Potassium-Bicarbonate-Induced Mineralized Acid Mine Drainage into Iron Hydroxyl Sulfate Minerals for Better Water Remediation and Resource Reuse

He,

Wang,

Tang

et al. 2024

Sustainability

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“…[15][16][17] Iron-oxidizing bacteria (such as Acidithiobacillus and Leptospirillum) prevalent in the AMD environment can effectively oxidize Fe 2+ to Fe 3+ and secondary minerals formed by Fe 3+ and sulfate can adsorb and co-precipitate with metal ions. 18,19 Several studies have advocated biological oxidation as a precursor to chemical neutralization, employing iron-oxidizing bacteria to completely oxidize Fe 2+ to Fe 3+ , followed by chemical neutralization to eliminate Fe 3+ . 20 Hou et al discovered that Fe 2+ could be completely oxidized into Fe 3+ , with a total iron (TFe) removal rate of 41.80% during biomineralization.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the development and effects of a combined treatment system for acid mine drainage via bio-oxidation and carbonate rock neutralization

Zhang

Wang

et al. 2023

Environ. Sci.: Water Res. Technol.

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Chemical Mineralization of AMD into Schwertmannite Fixing Iron and Sulfate Ions by Structure and Adsorption: Paving the Way for Enhanced Mineralization Capacity

He,

Tang,

Wang

et al. 2024

Bull Environ Contam Toxicol

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Simulated acid mine drainage treatment in iron oxidizing ceramic membrane bioreactor with subsequent co-precipitation of iron and arsenic

Cited by 18 publications

References 39 publications

Potassium-Bicarbonate-Induced Mineralized Acid Mine Drainage into Iron Hydroxyl Sulfate Minerals for Better Water Remediation and Resource Reuse

Potassium-Bicarbonate-Induced Mineralized Acid Mine Drainage into Iron Hydroxyl Sulfate Minerals for Better Water Remediation and Resource Reuse

Analysis of the development and effects of a combined treatment system for acid mine drainage via bio-oxidation and carbonate rock neutralization

Chemical Mineralization of AMD into Schwertmannite Fixing Iron and Sulfate Ions by Structure and Adsorption: Paving the Way for Enhanced Mineralization Capacity

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