Complexing agent and heavy metal removals from metal plating effluent by electrocoagulation with stainless steel electrodes

Kabdaşlı, Işık; Arslan, Tülin; Ölmez-Hancı, Tuğba; Arslan-Alaton, İdil; Tünay, Olcay

doi:10.1016/j.jhazmat.2008.10.065

Cited by 160 publications

(53 citation statements)

References 29 publications

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“…The 34 5+ which finally result in situ formation of gelatinous Al(OH) 3 effecting the coagulation and co-precipitation or H 2 flotation of particulates from the solution by adsorption [Kobya et al, (18)]. The aluminium hydroxide flocks act as absorbents for heavy metal ions.…”

Section: Brief Description Of Electrocoagulationmentioning

confidence: 99%

“…These are generated during the electrolysis process by electrodissolution of a sacrificial anode made of aluminium or iron. Electrocoagulation has been successfully performed for treatment and remediation of textile wastewaters [18,19], oil wastes [20,21], diary effluents [22], diesel and biodiesel wastewaters [23,24], laundry wastewaters [25], slaughter house effluents [26], arsenic or fluoride containing waters [27,28] and heavy metal bearing effluents [29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

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Nickel removal from waste water by electrocoagulation with aluminum electrodes

Dermentzis¹,

Valsamidou²,

Lazaridou³

et al. 2011

JESTR

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In this study, the performance of electrocoagulation with aluminium electrodes for removing nickel from synthetic aqueous solutions and actual electroplating wastewater was investigated. Parameters affecting the electrocoagulation process, such as initial pH, current density, initial metal ion concentration and contact time were investigated. The removal efficiency is very high in the pH range 4-10. Increased current density accelerated the electrocoagulation process, however, on cost of increased energy consumption. Initial Ni 2+ concentrations of 100-300 mg/lit were quantitatively reduced under the admissible limits in only 10-20 minutes of electrolysis time respectively at the current density of 30 mA/cm 2 . The process has proved to be efficient in removing Ni 2+ ions also from industrial electroplating effluents, where an initial Ni 2+ concentration of 215 mg/lit fell under the legal limits in 20 minutes.

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Section: Brief Description Of Electrocoagulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nickel removal from waste water by electrocoagulation with aluminum electrodes

Dermentzis¹,

Valsamidou²,

Lazaridou³

et al. 2011

JESTR

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“…Wastewater from metal finishing industries contain a wide variety of toxic contaminants such as heavy metals [1], organic substances [2], cyanides, and suspended solids [3] in levels which are hazardous to the environment and pose potential health risks to the public. In particular, the presence of heavy metals such as nickel, cadmium, chromium, copper, lead, silver, tin, and zinc is of great environmental concern because of their toxicity to human and other biological life [4,5].…”

Section: Introductionmentioning

confidence: 99%

Electro-dissolution of metal scrap anodes for nickel ion removal from metal finishing effluent

Vignesh

Sridhar

Babu

2015

J Mater Cycles Waste Manag

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This contribution reports a novel and cost efficient strategy for nickel ion removal from metal finishing effluents by electro-dissolution of scrap aluminium and iron sacrificial anodes. Electro-coagulation of effluent was carried out at 30 mA/cm 2 current density for 60 min. The nickel ion concentration of electroplating effluent was analysed by Atomic Absorption Spectroscopy. SEM images of iron and aluminium scrap anodes were critically analysed. Parameters such as heavy metal removal, anode dissolution rate with respect to heavy metal removal, reaction kinetics and cost estimation have been elaborately studied. Electro-coagulation at 30 mA/cm 2 for 60 min using iron and aluminium scrap anodes resulted in 95.9 and 94.1 % nickel ion reduction, respectively, with 0.0094 and 0.0053 g/ppm dissolution rates. The energy consumption for scrap aluminium and iron anodes was 0.0547 kWh/L. Loose internal bonding and spongy surface morphology of used metal scrap render high porosity and active surface area, enhancing reaction rate. Low cost and ready availability of waste scrap makes the process of electro-coagulation economically viable. Thus, the findings from this contribution point decisively at the superiority of waste metal scrap-based anodes for economic and environmentally sustainable heavy metal ion removal from metal finishing effluent.

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“…These conditions highly affect the selection of the treatment process to be used for the removal of nickel from waste water (Popuri et al 2009). Traditional processes usually utilized for nickel removal from waste waters are adsorption (Vieria et al 2010;Popuri et al 2009;Kandah and Meunier 2007;Li and Champagne 2009;Aguilar-Gonzalez et al 2010;Ewecharoen et al 2008), bio-sorption (Ozturk 2007Bhatnagar and Minocha 2010), precipitation (Forstner and Wittman 1979), electrochemical methods (Dermentzis 2010;Akbal and Camci 2011;Kabadasli et al 2009;Pospisil et al 2008;Njau et al 2000), filtration (Katsou et al 2010;Borbely and Nagy 2009;Karate and Marathe 2008;Channarong et al 2010), electroflocculation-filtration hybrid system (Sun et al 2009), liquid-liquid extraction (Gonzalez et al 2010) and ion exchange (Rengaraj et al 2001;Alyuz and Veli 2009;Halle et al 1982). In fact, ion exchange is a well-known technology that we have utilized in several difficult separation tasks up to isotope separation (Ismail et al 1997a(Ismail et al , 1997b(Ismail et al , 2002Fujii et al 1998;Nogami et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Nickel removal from electroplating waste water using stand-alone and electrically assisted ion exchange processes

Ismail

Soliman

Abdelmonem

et al. 2013

Int. J. Environ. Sci. Technol.

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Wastewater discharged from metal-finishing processes usually contains nickel, a hazardous substance that is used extensively in the surface finishing industry. In the present study, an acidic solution containing nickel was treated using strong acid cation exchange resin. A continuous lab-scale cation exchange arrangement permitting the assessment of electric current as an enhancement mechanism was designed and utilized at different flow rates successfully. Applying the electrical potential enhanced the nickel removal by 12.7 % at flow rate 240 ml/h, and 2.5 % at flow rate 500 ml/h. Nickel recovery has been also investigated using hydrochloric acid as an eluent with and without electric current enhancement.

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Complexing agent and heavy metal removals from metal plating effluent by electrocoagulation with stainless steel electrodes

Cited by 160 publications

References 29 publications

Nickel removal from waste water by electrocoagulation with aluminum electrodes

Nickel removal from waste water by electrocoagulation with aluminum electrodes

Electro-dissolution of metal scrap anodes for nickel ion removal from metal finishing effluent

Nickel removal from electroplating waste water using stand-alone and electrically assisted ion exchange processes

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