Selective sulfide precipitation of copper ions from arsenic wastewater using monoclinic pyrrhotite

Zhang, Xingfei; Tian, Jia; Hu, Yuehua; Han, Haisheng; X, Luo; Sun, Wei; Yue, Tong; Wang, Li; Cao, Xuefeng; Zhou, Hepeng

doi:10.1016/j.scitotenv.2019.135816

Cited by 59 publications

(14 citation statements)

References 36 publications

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“…This approach was found to be effective in the treatment of hazardous heavy metal ions [69]. A Cu 2+ removal of 96% was achieved in treating arsenic wastewater [70]. Lower sulphide means more concentration of zinc in the effluent, while higher sulphide means a bad odor resulting from residual sulphide.…”

Section: Chemical Precipitationmentioning

confidence: 99%

Gas Hydrate-Based Heavy Metal Ion Removal from Industrial Wastewater: A Review

Nallakukkala

Rehman

Zaini

et al. 2022

Water

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Innovating methods for treating industrial wastewater containing heavy metals frequently incorporate toxicity-reduction technologies to keep up with regulatory requirements. This article reviews the latest advances, benefits, opportunities and drawbacks of several heavy metal removal treatment systems for industrial wastewater in detail. The conventional physicochemical techniques used in heavy metal removal processes with their advantages and limitations are evaluated. A particular focus is given to innovative gas hydrate-based separation of heavy metals from industrial effluent with their comparison, advantages and limitations in the direction of commercialization as well as prospective remedies. Clathrate hydrate-based removal is a potential technology for the treatment of metal-contaminated wastewater. In this work, a complete assessment of the literature is addressed based on removal efficiency, enrichment factor and water recovery, utilizing the gas hydrate approach. It is shown that gas hydrate-based treatment technology may be the way of the future for water management purposes, as the industrial treated water may be utilized for process industries, watering, irrigation and be safe to drink.

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Section: Chemical Precipitationmentioning

confidence: 99%

Gas Hydrate-Based Heavy Metal Ion Removal from Industrial Wastewater: A Review

Nallakukkala

Rehman

Zaini

et al. 2022

Water

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“…The selective precipitation of copper with synthetic monoclinic pyrrhotite was studied [43], achieving high copper conversions (96%) with a small co-precipitation of As (<3%) for a sulfide dosage molar ratio of 3.0.…”

Section: Smelting Leachates and Effluentsmentioning

confidence: 99%

“…A study using monoclinic pyrrhotite (Fe (1−x) S, a nonstoichiometric variant of FeS) as a sulfide source assessed the impact of different qualities of pyrrhotite on the selective removal of copper from arsenic contained in acidic wastewater of refineries [43]. The use of FeS is based on the low solubility that CuS (K sp = 1.3 × 10 −36 ) has with respect to FeS (K sp = 1.6 × 10 −19 ) and As 2 S 3 (K sp = 2.1 × 10 −22 ).…”

Section: Sulfide Reagent Sourcesmentioning

confidence: 99%

“…The slow release of sulfide allowed the selective precipitation of copper, reaching precipitates with 20% of Cu and 0.7% As, with copper conversions of 96% for a dosage with a molar ratio of 3.0 sulfide/copper. The extremely uneven structure of the synthetic pyrrhotite, exhibiting a gully shape with sharp edges, triggers a larger specific surface area for reaction in comparison to the compact structure of natural pyrrhotite [43].…”

Section: Sulfide Reagent Sourcesmentioning

confidence: 99%

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Metal Sulfide Precipitation: Recent Breakthroughs and Future Outlooks

2021

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The interest in metal sulfide precipitation has recently increased given its capacity to efficiently recover several metals and metalloids from different aqueous sources, including wastewaters and hydrometallurgical solutions. This article reviews recent studies about metal sulfide precipitation, considering that the most relevant review article on the topic was published in 2010. Thus, our review emphasizes and focuses on the overall process and its main unit operations. This study follows the flow diagram definition, discussing the recent progress in the application of this process on different aqueous matrices to recover/remove diverse metals/metalloids from them, in addition to kinetic reaction and reactor types, different sulfide sources, precipitate behavior, improvements in solid–liquid separation, and future perspectives. The features included in this review are: operational conditions in terms of pH and Eh to perform a selective recovery of different metals contained in an aqueous source, the aggregation/colloidal behavior of precipitates, new materials for controlling sulfide release, and novel solid–liquid separation processes based on membrane filtration. It is therefore relevant that the direct production of nanoparticles (Nps) from this method could potentially become a future research approach with important implications on unit operations, which could possibly expand to several applications.

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“…ere are various techniques for the treatment of Cu from industrial effluents and wastewaters, such as chemical precipitation [7], flocculation [8], membrane filtration [9,10], ion exchange [11], electrodialysis [12], and flotation [13]. Among numerous treatment processes, activated carbons (ACs) adsorption is widely used because of its simple design, easy accessibility, and high efficiency [14].…”

Section: Introductionmentioning

confidence: 99%

K2CO3-Activated Pomelo Peels as a High-Performance Adsorbent for Removal of Cu(II): Preparation, Characterization, and Adsorption Studies

Liu

Wei

2021

Journal of Chemistry

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Activated carbons (ACs) were prepared from pomelo peels by K2CO3 activation and used as an adsorbent (PAC) for the removal of Cu(II) from aqueous solutions. BET, SEM, and FT-IR were employed for the characterization of the obtained ACs. The optimum ACs were reported at activation temperature of 850°C, activation time of 60 min, and impregnation ratio of 3, which had a high surface area (1213 m2/g) and total pore volume (0.57 cm3/g). The resulting ACs were used for the adsorption of Cu(II) from aqueous solutions in the batch mode and yielded a superior adsorption capacity of 139.08 mg/g. The pH of optimum adsorption was determined as 5. Pseudo first-order model, pseudo second-order model, and intraparticle diffusion model were applied to describe the adsorption processes. The adsorption kinetic data were found to follow the pseudo second-order model. The adsorption isotherms data were analyzed using Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich models. The Langmuir model was found to provide the best fit, and the calculated adsorption capacity was 151.35 mg/g.

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Selective sulfide precipitation of copper ions from arsenic wastewater using monoclinic pyrrhotite

Cited by 59 publications

References 36 publications

Gas Hydrate-Based Heavy Metal Ion Removal from Industrial Wastewater: A Review

Gas Hydrate-Based Heavy Metal Ion Removal from Industrial Wastewater: A Review

Metal Sulfide Precipitation: Recent Breakthroughs and Future Outlooks

K2CO3-Activated Pomelo Peels as a High-Performance Adsorbent for Removal of Cu(II): Preparation, Characterization, and Adsorption Studies

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