Removal of heavy metals from industrial waste solutions by a rotating fixed bed of ion exchange resin

Hagag, Mohammed; El-Gayar, Dina Ahmed; Nosier, S. A.; Mubark, A.A.

doi:10.5004/dwt.2017.21794

Cited by 7 publications

(8 citation statements)

References 7 publications

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“…Previous mass transfer studies showed that film diffusion is the rate-determining step, which is consistent with the present finding 16 .…”

Section: Resultssupporting

confidence: 93%

“…According to previous studies, the rate-determining step of the ion exchange process is either the film diffusion or the intra-particle diffusion step 16 . The former is due to the resistance resulting from the boundary layer around the ion exchange resin, while the latter is due to the resistance resulting from the porosity of the resin particle.…”

Section: Resultsmentioning

confidence: 99%

“…4 , it enriches the bed with fresh solution and decreases the diffusion layer thickness around each particle, with a consequent increase in the mass transfer coefficient according to Eq. ( 7 ) 16 . In addition, it is well known that rotating cylinders are characterized by the formation of a high degree of turbulence at their outer rotating basket surface, with a consequent increase in the rate of (Cu 2+ , Fe 2+ and SO 4 2− ) removal 27 (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Variables studied were ion concentration, the effect of resin height inside the basket to the basket diameter ratio (L/d), and the rotation speed of the basket. Previous studies proved that using either fluidized bed (Agitation of resin freely in solution) reactor or fixed bed reactor has drawbacks, where mass transfer of a fluidized bed is low because of low slip (relative) velocity between the resin particles and the solution while fixed bed suffers from high-pressure drop and hence high pumping power and high operating costs of the process 9 , 16 , 17 . The present study seeks to reach a dimensionless mass transfer correlation that can be used in practice for the design and scale up of the present reactor.…”

Section: Introductionmentioning

confidence: 99%

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Removal of Cu2+, Fe2+ and SO42− ions from industrial wastewater by ion exchange resins contained in a rotating perforated cylindrical basket of different heights

Zakaria

Farag

El-Gayar

2023

Sci Rep

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The present study is concerned with the development of a new cylindrical basket filled with ion exchange resin. The performance of the reactor was examined by removing Cu2+, Fe2+ and SO42− ions from synthetic wastewater. Variables studied were the initial ion concentration in the solution, contact time, resin height inside the cylindrical basket and cylindrical basket rotational speed. Dimensionless analysis was used to obtain a mass transfer correlation for each of the mentioned ions suitable for scale up and design of the present reactor. The experimental results revealed that both the percentage and the rate of removal of (Cu2+, Fe2+ and SO42−) ions decrease as the initial ion concentration in the solution increases, while they increase as the contact time, rotational speed and (L/d) ratio increase. Both Langmuir’s and Freundlich’s adsorption isotherms were examined and it was found that Langmuir’s adsorption isotherm gives a better fitting for the obtained data than Freundlich’s. Regeneration ability was tested, which revealed the high resin efficiency upon operating several consequence cycles that could reach 4 cycles with a slight decrease in the removal efficiency.

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“…Previous mass transfer studies showed that film diffusion is the rate-determining step, which is consistent with the present finding 16 .…”

Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Removal of Cu2+, Fe2+ and SO42− ions from industrial wastewater by ion exchange resins contained in a rotating perforated cylindrical basket of different heights

Zakaria

Farag

El-Gayar

2023

Sci Rep

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“…Experimental examples of RPBs used for heterogeneous catalytic reactions include the Fischer-Tropsch process, 8 and heavy metals removal from wastewater with ion exchange resins. 9 Chen et al, adopted a RPB with Co/SiO 2 loaded on the rotor to promote the Fischer-Tropsch process. Changing the gravity level (g r ) varied the product selectivity: a g r of 50 m 2 s À1 yielded 10 times more hydrocarbons in the diesel fraction compared to a g r of 300 m 2 s À1 .…”

Section: Rotating Fixed Beds (Rpb)mentioning

confidence: 99%

Process Intensification and Catalysis

Boffito

Gerven

2019

Reference Module in Chemistry, Molecular Sciences and Chemical Engineering

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This article was published in the Elsevier Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, and the attached copy is provided by Elsevier for the author's benefit and for the benefit of the author's institution, for non-commercial research and educational use including without limitation use in instruction at your institution, sending it to specific colleagues who you know, and providing a copy to your institution's administrator.

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Applications of Ion Exchange in Environmental Remediation: Removal of Heavy Metals From Wastewater

Reda Hamed,

Abdallah

2024

Remediation Journal

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The concern over heavy metal contamination and its impact on human health and the environment has led to a growing interest in cost‐effective and sustainable remediation technologies. Ion exchange is recognized as an efficient method for removing heavy metal ions from wastewater. This study focused on the removal of heavy metal ions (Ni, Cu, Zn, and Pb) from aqueous solutions using the extended batch equilibrium technique. Experimental trials were conducted using Purolite C100, a strong acid ion‐exchange resin, to assess the influence of various treatment parameters such as pH, contact time, sorbent dosages, and initial heavy metal concentrations on the removal efficiency. The results indicated that significant treatment equilibrium could be achieved within 1 h. Notably, pH levels between 5 and 6 had a significant impact on heavy metal removal, with adsorption capacities of 71, 67, 66, and 62 mg/g for Ni, Cu, Zn, and Pb, respectively. Furthermore, the equilibrium data obtained from the batch experiments were well fitted with Langmuir, Freundlich, and pseudo‐first‐order kinetic models. Statistical analysis revealed a strong correlation with the Langmuir isotherm model, highlighting its superiority over the Freundlich isotherm and pseudo‐first‐order kinetic models.

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Removal of heavy metals from industrial waste solutions by a rotating fixed bed of ion exchange resin

Cited by 7 publications

References 7 publications

Removal of Cu2+, Fe2+ and SO42− ions from industrial wastewater by ion exchange resins contained in a rotating perforated cylindrical basket of different heights

Removal of Cu2+, Fe2+ and SO42− ions from industrial wastewater by ion exchange resins contained in a rotating perforated cylindrical basket of different heights

Process Intensification and Catalysis

Applications of Ion Exchange in Environmental Remediation: Removal of Heavy Metals From Wastewater

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