Removal of copper from aqueous solutions by cementation in a bubble column reactor fitted with horizontal screens

El-Ashtoukhy, E-S.Z.; Abdel‐Aziz, M.H.

doi:10.1016/j.minpro.2013.03.001

Cited by 30 publications

(14 citation statements)

References 27 publications

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“…The 3-factorial experiments were carried out under the BBD with the DX11 software using the predicted and experimental data of the responses (copper removal (Y 1 ) and energy consumption (Y 2 )), which are presented in Table 2. The response functions with the fix coefficients for copper and energy consumption are performed with equations (7) and (8) Y 1 (copper removal, %) = 58.94333…”

Section: Response Analysis and Explanation By Bbd Methodsmentioning

confidence: 99%

“…The quadratic regression technique is appropriate, being apparent from the F-test with a shallow probability value (Prob > F). Table 3 resulted in ANOVA analysis considering the significance of factors in PV-EC experiment through equation (7) and (8). Because the p-values of each coefficient are less than 0.05, it shows that indicate model terms are significant.…”

Section: Response Analysis and Explanation By Bbd Methodsmentioning

confidence: 99%

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Optimization of Copper Removal by Photovoltaic Electrocoagulation from Aqueous Solution Using Response Surface Methodology Towards Sustainable Development

Nguyen¹,

Nguyen²,

Lan³

2019

J. Ecol. Eng.

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This research aims at illustrating the optimal functions of removing copper ions in aqueous solution by means of the electrocoagulation process in which portable solar power generators are used as renewable energy. A solar photovoltaic cell (PV), producing approximately 48A current intensity for 4-7 h per day, was sufficient to charge the lithium batteries completely during the day. This system was connected directly to the electrocoagulation tank. The Box-Behnken design (BBD) was applied to evaluate three effects of process factors: current density, the dose of electrolyte (NaCl), and application time. The results showed that an optimal efficiency of 99.01% Cu removal plus an energy savings of 1.039 kWh/m 3 were obtained at a current density of 4 A/m 2 , the dosage of NaCl (electrolyte) of 1.87 g/L, and electrolysis time of 10 min. The chemical components of the sludge produced under these optimized conditions were determined by means of EDX. It was illustrated that the copper ions were the main elements of sludge, and nonhazardous compounds were contained. The PV-lithium battery system is considered to be an efficient alternative energy source toward sustainable development.

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Section: Response Analysis and Explanation By Bbd Methodsmentioning

confidence: 99%

Section: Response Analysis and Explanation By Bbd Methodsmentioning

confidence: 99%

Optimization of Copper Removal by Photovoltaic Electrocoagulation from Aqueous Solution Using Response Surface Methodology Towards Sustainable Development

Nguyen¹,

Nguyen²,

Lan³

2019

J. Ecol. Eng.

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“…Several approaches have been studied and developed for the effective removal/recovery of copper ions including chemical precipitation [9], cementation [10], adsorption [6,[11][12][13], biosorption [14][15][16], ion exchange [17], chelation [18], electro-driven processes [19][20][21] and pressure-driven membrane processes [22,23]. Liquid membranes have also been used for the removal of copper from aqueous solution [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Copper Removal from Aqueous Solutions Using Emulsion Liquid Membranes with Benzoylacetone as a Carrier

León

Senent

et al. 2017

Metals

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Abstract:The presence of heavy metals in aqueous solutions above certain limits represents a serious threat to the environment due to their toxicity and non-degradability. Thus, the removal of these metals from contaminated waters has received increasing attention during recent decades. This paper describes the removal of Cu(II) from aqueous solutions by emulsion liquid membranes, through a carrier-facilitated counter-transport mechanism, using benzoylacetone as the carrier and HCl as the stripping agent (protons as counter-ions). To optimize the Cu(II) removal process, the effect of the following operating parameters on the on the stability of the emulsion liquid membrane and on the Cu(II) removal efficiency was studied: feed pH, HCl concentration in the permeate phase, carrier and emulsifier concentration in the membrane phase, feed phase/emulsion phase and permeate phase/membrane phase volume ratios, emulsification time and speed in the primary emulsion preparation and stirring speed in the whole feed phase/emulsion phase system. Typical membrane transport parameters, such as flux and permeability, were also determined. Optimal Cu(II) removal conditions were: 5.5 feed pH, 10 kg/m 3 benzoylacetone concentration in the membrane phase, 18.250 kg/m 3 HCl concentration in the permeate phase, 50 kg/m 3 Span 80 concentration in the membrane phase, 200 rpm stirring rate, 5 min emulsification time, 2700 rpm emulsification rate, 2:1 feed:emulsion volume ratio and 1:1 permeate:membrane volume ratio. In these optimal conditions, 80.3% of Cu(II) was removed in 15 min with an apparent initial flux and permeability of 0.3384 kg·m −3 ·min −1 and 0.3208 min −1 , respectively.

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“…[22,23] Different attempts have been made to enhance the rate of cementation reactions by different methods such as increasing the active surface area of the cementing agent using a fixed bed [29] or a fluidized bed, [30] generation of high degree of turbulence through the use of oscillatory motion, [31,32] gas sparging, [33,34] mechanical agitation and rotating packed geometry, [35,36] and jet impingement. [1] The aim of the present work is to investigate the kinetics of copper cementation on aluminum in a stirred tank employing multirotating cylinders.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Copper from Effluents by Cementation on Aluminum in a Multirotating Cylinder-Agitated Vessel

Abdel‐Aziz

El-Ashtoukhy

Bassyouni

2015

Metall Mater Trans B

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Recovery of copper from synthetic waste solution using cementation technique in a new agitated vessel employing multirotating aluminum cylinders impeller was investigated. Parameters studied are cylinder diameter, rotation speed, initial copper ion concentrations, and effect of surfactants. Solution analysis and scanning electron microscopy were employed to investigate the kinetic and mechanism of the process. The rate of recovery was found to be at its maximum value at the operating conditions of 350 rpm rotation speed, 5000 ppm initial CuSO 4 concentration, and 1.2 cm cylinder diameter. All data were correlated by the dimensionless equation: Sh ¼ 1:16Sc 0:33 Re 0:63 d c L 0:54 ;with an average deviation of ±8.5 pct and a standard deviation of 5.88 pct. Presence of nonylphenol ethoxylate surfactant in the solution decreased the rate of recovery by an amount ranging from 2.94 to 38.57 pct depending on the operating conditions. The present geometry gave higher rates of recovery compared to both the single rotating cylinder and rotating disc reactor.

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Removal of copper from aqueous solutions by cementation in a bubble column reactor fitted with horizontal screens

Cited by 30 publications

References 27 publications

Optimization of Copper Removal by Photovoltaic Electrocoagulation from Aqueous Solution Using Response Surface Methodology Towards Sustainable Development

Optimization of Copper Removal by Photovoltaic Electrocoagulation from Aqueous Solution Using Response Surface Methodology Towards Sustainable Development

Optimization of Copper Removal from Aqueous Solutions Using Emulsion Liquid Membranes with Benzoylacetone as a Carrier

Recovery of Copper from Effluents by Cementation on Aluminum in a Multirotating Cylinder-Agitated Vessel

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