Review on the treatment of electroplating industry wastewater by electrochemical methods

Rajoria, Sonal; Vashishtha, Manish; Sangal, Vikas Kumar

doi:10.1016/j.matpr.2021.04.165

Cited by 34 publications

(9 citation statements)

References 44 publications

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“…Various treatment approaches have been developed for the removal of heavy metals ion exchange [ 10 ], adsorption [ 11 , 12 ], chemical precipitation [ 13 , 14 ], membrane separation [ 15 , 16 ], flocculation-coagulation [ 17 ], flotation [ 18 ], and electrochemical methods [ 19 ]. Amongst all the treatments proposed, adsorption using sorbents is one of the most popular methods since the proper design of the adsorption process will produce high-quality treated effluents.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Biodegradable Poly(vinyl alcohol)-Chitosan/Cellulose Hydrogel Beads for Efficient Removal of Pb(II), Cd(II), Zn(II), and Co(II) from Water

Aljar

Rashdan

Almutawah

et al. 2023

Gels

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Globally, water contamination by heavy metals is a serious problem that affects the environment and human health. Adsorption is the most efficient way of water treatment for eliminating heavy metals. Various hydrogels have been prepared and used as adsorbents to remove heavy metals. By taking advantage of poly(vinyl alcohol) (PVA), chitosan (CS), cellulose (CE), and the process for physical crosslinking, we propose a simple method to prepare a PVA-CS/CE composite hydrogel adsorbent for the removal of Pb(II), Cd(II), Zn(II) and Co(II) from water. Structural analyses of the adsorbent were examined by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy-energy dispersive X-ray (SEM-EDX) analysis, and X-ray diffraction (XRD). PVA-CS/CE hydrogel beads had a good spherical shape together with a robust structure and suitable functional groups for the adsorption of heavy metals. The effects of adsorption parameters such as pH, contact time, adsorbent dose, initial concentration of metal ions, and temperature on the adsorption capacity of PVA-CS/CE adsorbent were studied. The adsorption characteristics of PVA-CS/CE for heavy metals may be completely explained by pseudo-second-order adsorption and the Langmuir adsorption model. The removal efficiency of PVA-CS/CE adsorbent for Pb(II), Cd(II), Zn(II), and Co(II) was 99, 95, 92, and 84%, respectively, within 60 min. The heavy metal’s hydrated ionic radius may be crucial in determining the adsorption preference. After five consecutive adsorption–desorption cycles, the removal efficiency remained over 80%. As a result, the outstanding adsorption-desorption properties of PVA-CS/CE can potentially be extended to industrial wastewater for heavy metal ion removal.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Biodegradable Poly(vinyl alcohol)-Chitosan/Cellulose Hydrogel Beads for Efficient Removal of Pb(II), Cd(II), Zn(II), and Co(II) from Water

Aljar

Rashdan

Almutawah

et al. 2023

Gels

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“…The RSM is a statistical method that is useful for designing experiments, analyzing, and optimizing the studied variables and responses [32 , 54 , 55] . The validation of the adequacy of the mathematical models estimated is achieved by using the analysis of variance (ANOVA).…”

Section: Resultsmentioning

confidence: 99%

Electrocoagulation removal of Pb, Cd, and Cu ions from wastewater using a new configuration of electrodes

AlJaberi¹,

Hawaas²

2023

MethodsX

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“…These elements are highly soluble in water and easily absorbed by living organisms. Heavy metals can be very toxic and, even at low concentrations, can accumulate in the food chain of animals and humans [ 6 , 7 , 8 , 9 ]. Therefore, the study of heavy metal pollution in aquatic ecosystems is essential from the point of view of public health.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Adsorption/Desorption Process on Dolomite Adsorbent in the Copper(II) Removal from Aqueous Solutions

et al. 2023

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The removal of hazardous heavy metals that have been released into the environment due to industrial activities has become an important issue in recent years. The presented study concerned the removal of copper(II) ions from aqueous solutions using dolomites. Dolomite is a very attractive adsorbent due to its wide availability, low cost, good adsorption, and environmental compatibility. The paper describes the properties of D-I and D-II dolomites from two different open-cast mines in Poland. The properties of natural adsorbents were determined based on point of zero charges (PZC), elemental analysis of the adsorbent composition, FT-IR, XRD, and SEM spectra analysis. Depending on the initial concentration of the solution used, the adsorption efficiency of copper(II) ions was 58–80% for D-I and 80–97% for D-II. The adsorption mechanism in the case of D-II dolomite was mainly based on ion exchange, while chemisorption dominated the D-I dolomite surface. Considering the possibility of the regeneration and reuse of the adsorbent, dolomite D-II is a better material (the desorption efficiency of copper(II) ions was 58–80%). The adsorption behavior of dolomites has been described using six adsorption isotherms. The best fit was obtained for the Redlich–Peterson, Jovanović, and Langmuir isotherms, indicating that monolayer adsorption occurred. The maximum adsorption capacity for copper(II) was 378 mg/g of D-I and 308 mg/g of D-II.

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Review on the treatment of electroplating industry wastewater by electrochemical methods

Cited by 34 publications

References 44 publications

Synthesis and Characterization of Biodegradable Poly(vinyl alcohol)-Chitosan/Cellulose Hydrogel Beads for Efficient Removal of Pb(II), Cd(II), Zn(II), and Co(II) from Water

Synthesis and Characterization of Biodegradable Poly(vinyl alcohol)-Chitosan/Cellulose Hydrogel Beads for Efficient Removal of Pb(II), Cd(II), Zn(II), and Co(II) from Water

Electrocoagulation removal of Pb, Cd, and Cu ions from wastewater using a new configuration of electrodes

Characteristics of Adsorption/Desorption Process on Dolomite Adsorbent in the Copper(II) Removal from Aqueous Solutions

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