Efficiency of Carbonate Precipitation and Removal of Copper and Nickel Ions from their Monocomponent and Two-component Aqueous Solutions

Junuzović, Halid; Bеgić, Sаbinа; Selimović, Amel; Đozić, Abdel; Cvrk, Ramzija; Ahmetović, Melisa

doi:10.2139/ssrn.3559391

Cited by 4 publications

(6 citation statements)

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“…At present, chemical precipitation, coagulation/flocculation, electrochemical method, ion exchange, membrane filtration and adsorption are the existing treatment technologies to remove heavy metals in water and wastewater streams [9,10]. Among these current methods, chemical precipitation is the most widely utilized method in the industry particularly due to the simplicity of process control, effectivity over a wide range of temperature and relatively low operating cost [9,11]. Traditionally, chemical precipitation processes produce insoluble precipitates of heavy metals in the form of hydroxides, sulfides, carbonates, and phosphates.…”

Section: Introductionmentioning

confidence: 99%

“…Removal efficiency of metal ions in the solution can reach optimum by changing the significant parameters including pH, temperature, initial metal concentration, and charge of the ions (via charge neutralization) [12]. Chemical precipitation process usually involves addition of reagents, pH adjustment inducing precipitation, flocculation, sedimentation and solid-liquid separation [11]. Oftentimes, alkaline reagents are utilized to raise the pH of the solution lowering the solubility of the metallic constituent, consequently leading to precipitation.…”

Section: Introductionmentioning

confidence: 99%

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Recovery of cobalt and copper from single- and co-contaminated simulated electroplating wastewater via carbonate and hydroxide precipitation

Quiton

Huang

2022

Sustain Environ Res

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Wastewater containing cobalt and copper comprised of plating wash water, plant wash water, and equipment cooling and wash water is generated in the electroplating industry. These metals can be detrimental to humans, animals, plants, and the environment. Thus, it is necessary to treat electroplating wastewater to remove these toxic metals. Carbonate and hydroxide precipitation were utilized for the removal of Co (II) and Cu (II) from synthetic electroplating wastewater by jar tests in this work. The effects of solution pH, precipitant-to-metal ratio, and type of precipitant on the precipitation efficiency of cobalt and copper from the single- and co-contaminated systems were investigated. Carbonate precipitation achieved higher removal efficiency for both target metals in the single- and co-contaminated wastewater streams. Furthermore, it can operate at relatively low pH range of about 7–8. Cobalt in both pollutant systems was almost completely removed at pH 10 using both precipitant systems. Copper was found to be easily removed which was possibly brought about by precipitation-adsorption mechanism. The extent of the co-removal of cobalt with copper is significantly pH dependent. The effect of precipitant-to-metal ratio for cobalt and copper treatment varied in single- and co-contaminated streams. Carbonate precipitation led to higher sludge volume than that of hydroxide precipitation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recovery of cobalt and copper from single- and co-contaminated simulated electroplating wastewater via carbonate and hydroxide precipitation

Quiton

Huang

2022

Sustain Environ Res

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show abstract

“…Removal efficiency of metal ions in the solution can reach optimum by changing the significant parameters including pH, temperature, initial metal concentration and charge of the ions [12]. Chemical precipitation process usually involves addition of reagents, pH adjustment inducing precipitation, flocculation, sedimentation and solid-liquid separation [11]. Oftentimes, alkaline reagents are utilized to raise the pH of the solution lowering the solubility of the metallic constituent, consequently leading to precipitation.…”

Section: Introductionmentioning

confidence: 99%

“…The most significant advantage of this process is its low cost [15]. On the other hand, carbonate precipitation using sodium carbonate (Na2CO3) is a low-cost chemical precipitation process with added advantages such as its simplicity, optimum treatment occurring at less pH levels and sludges with good filtration characteristics [11].…”

Section: Introductionmentioning

confidence: 99%

Reclamation of Cobalt and Copper from Single- and Co-contaminated Wastewater via Carbonate and Hydroxide Precipitation

Quiton

Huang

2021

Preprint

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Wastewater containing cobalt and copper comprised of plating wash water, plant wash water, and equipment cooling and wash water is generated in the electroplating industry. These metals can be detrimental to humans, animals, plants, and the environment. Thus, it is necessary to treat electroplating wastewater to remove these toxic metals. Carbonate and hydroxide precipitation were utilized for the removal of Co(II) and Cu(II) from synthetic electroplating wastewater by jar tests in this work. The effects of solution pH, precipitant-to-metal ratio, and type of precipitant on the precipitation efficiency of cobalt and copper from the single- and co-contaminated systems were investigated. Carbonate precipitation achieved higher removal efficiency for both target metals in the single- and co-contaminated wastewater streams. Furthermore, it can operate at relatively low pH range of about 7.0-8.0. Cobalt in both pollutant systems was almost completely removed at pH 10.0 using both precipitant systems. Copper was found to be easily removed which was possibly brought about by precipitation-adsorption mechanism. The extent of the co-removal of cobalt with copper is significantly pH dependent. The effect of precipitant-to-metal ratio for cobalt and copper treatment varied in single- and co-contaminated streams. Carbonate precipitation led to lower sludge density than that of hydroxide precipitation.

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“…By further increasing the pH value of treated sample, the efficiency of removal continuously decreased for both copper and nickel. Junuzović et al found that the highest percentage of Cu (II) removal from a solution which contained Cu (II) and Ni (II) of initial concentrations of 500 mg/L, obtained at approximate pH 7[23]. Negrea at al.…”

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confidence: 99%

INFLUENCE OF pH AND PRECIPITATING AGENT ON THE REMOVAL OF HEAVY METAL CATIONS FROM INDUSTRIAL SAMPLES

2020

IJESRT

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The purpose of this research was to examine the influence of pH and type of precipitating agent on the removal of heavy metal cations from industrial wastewater samples by method of chemical precipitation. Three precipitating agents were used: Na2CO3, NaOH and waste sludge from the Solvay process. Samples of industrial wastewater, in which the presence of Cu (II) and Ni (II) was determined, have been taken from the electroplating process, and samples in which the presence of Zn (II) was determined, have been taken from the galvanizing process. The experimental results showed that the highest percentage of removal of these cations was at pH > 7 for each precipitant used, with NaOH proving to be the best precipitating agent, followed by Solway waste sludge and Na2CO3.

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Efficiency of Carbonate Precipitation and Removal of Copper and Nickel Ions from their Monocomponent and Two-component Aqueous Solutions

Cited by 4 publications

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Recovery of cobalt and copper from single- and co-contaminated simulated electroplating wastewater via carbonate and hydroxide precipitation

Recovery of cobalt and copper from single- and co-contaminated simulated electroplating wastewater via carbonate and hydroxide precipitation

Reclamation of Cobalt and Copper from Single- and Co-contaminated Wastewater via Carbonate and Hydroxide Precipitation

INFLUENCE OF pH AND PRECIPITATING AGENT ON THE REMOVAL OF HEAVY METAL CATIONS FROM INDUSTRIAL SAMPLES

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