Analysis of the variation in the permeate flux and of the efficiency of the recovery of mercury by polyelectrolyte enhanced ultrafiltration (PE-UF)

Pastor, Manuel Rodríguez; Samper-Vidal, E.; Varó, Pedro; Prats, Daniel

doi:10.1016/s0011-9164(02)01017-2

Desalination

2003

DOI: 10.1016/s0011-9164(02)01017-2

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Analysis of the variation in the permeate flux and of the efficiency of the recovery of mercury by polyelectrolyte enhanced ultrafiltration (PE-UF)

Manuel Rodríguez Pastor

E. Samper-Vidal

Pedro Varó

et al.

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Cited by 15 publications

(2 citation statements)

References 6 publications

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“…For example, Pastof et al [8] reported that ultrafiltration enhanced by the addition of polymers soluble in water. It is a technique for the recuperation of heavy metals in wastewater streams.…”

mentioning

confidence: 99%

“…The removal of single metal ions including Cs + , Sr 2+ , Mn 2+ , Co 2+ , Cu 2+ , Zn 2+ , and Cr 3+ from aqueous solutions (up to 200 mg/l) by ultrafiltration (UF) with the help of an anionic surfactant sodium dodecyl sulfate (SDS) was investigated by Juang et al [9]. Their experiments were performed as a function of the membrane MWCO (1000-8000), material (polyamide, polyethersulfone), solution pH (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12), and molar concentration ratio of the surfactant to metals (the S/M ratio, 0.5-27). There results show that complete removal of metal ions, except for monovalent Cs+, could be achieved as long as the SDS micelles were formed.…”

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confidence: 99%

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Recovery of PVA Using Polyethersulfone (PES) Hollow Fiber Ultrafiltration Membranes: Part II: Effect of Carboxymethyl Cellulose (CMC) Concentration

Saleh¹,

Alhelaly²,

Ali³

et al. 2009

ETJ

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Polyethersulfone (PES) hollow fiber ultrafiltration (UF) membrane with the molecular weight cut-off (MWCO) 20,000 was used for the recovery of polyvinyl alcohol (PVA) from the simulated wastewater. An attempt to study the effect of carboxymethyl cellulose as synthetic warp sizing agents on the PVA recovery was investigated in this case. Experimental results shown that PVA concentration in the retentate of PES hollow fiber membrane were lower with addition of carboxymethyl cellulose (CMC) in PVA solution. Besides, higher trans-membrane pressure from 1.0 to 2.1 bars, solution temperature 50-75℃, and feed velocity 0.16-0.32 m/s, improved the PVA recovery in two different PVA solutions. PES hollow fiber ultrafiltration process was efficient for PVA recovery from the simulated wastewater using PVA solution with low carboxymethyl cellulose (CMC) concentration as synthetic warp sizing agents.

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mentioning

confidence: 99%

mentioning

confidence: 99%

Recovery of PVA Using Polyethersulfone (PES) Hollow Fiber Ultrafiltration Membranes: Part II: Effect of Carboxymethyl Cellulose (CMC) Concentration

Saleh¹,

Alhelaly²,

Ali³

et al. 2009

ETJ

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Functional water‐soluble polymers: polymer–metal ion removal and biocide properties

Rivas

Pereira

Maureira

2009

Polymer International

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Water‐soluble polymers have attracted much interest due to their potential applications in environmental protection engineering to remove harmful pollutants and in biomedicine in the areas of tissue engineering, within‐body implants or other medical devices, artificial organ prostheses, ophthalmology, dentistry, bone repair, and so on. In this review, particular emphasis is given to the ability of water‐soluble polymers with amine, amide, carboxylic acid, hydroxyl and sulfonic acid functional groups to remove metal ions by means of the liquid‐phase polymer‐based retention (LPR) technique that combines the use of water‐soluble polymers and ultrafiltration membranes. The second part is dedicated to showing the potential application of functional water‐soluble polymers and their polymer–metal complexes as biocides for various bacteria. These polymers and polymer–metal complexes show an efficient bactericide activity, especially to Gram‐negative bacteria, Staphylococcus aureus reaching concentrations lower than 4 µg mL−1. This activity depends on polymer size, type of metal ion, contact time and concentration of polymer and metal ion. The discussion reveals that in the case of the LPR process the efficiency of metal ion removal depends strongly on the type of polymer functional group and the feed pH value. In general, two mechanisms of ion entrapment are suggested: complex formation and electrostatic interaction. In the case of the medical use of water‐soluble polymers and their complexes with metal ions, the review documents the unique bactericide properties of the investigated species. The polymer‐metal ion complexes show a reduced genotoxic activity compared with free metal ions. Copyright © 2009 Society of Chemical Industry

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Metal removal from aqueous media by polymer-assisted ultrafiltration with chitosan

Crini

Morin‐Crini

Fatin‐Rouge

et al. 2017

Arabian Journal of Chemistry

101

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Analysis of the variation in the permeate flux and of the efficiency of the recovery of mercury by polyelectrolyte enhanced ultrafiltration (PE-UF)

Cited by 15 publications

References 6 publications

Recovery of PVA Using Polyethersulfone (PES) Hollow Fiber Ultrafiltration Membranes: Part II: Effect of Carboxymethyl Cellulose (CMC) Concentration

Recovery of PVA Using Polyethersulfone (PES) Hollow Fiber Ultrafiltration Membranes: Part II: Effect of Carboxymethyl Cellulose (CMC) Concentration

Functional water‐soluble polymers: polymer–metal ion removal and biocide properties

Metal removal from aqueous media by polymer-assisted ultrafiltration with chitosan

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