Reactive red 120 retention through ultrafiltration enhanced by synthetic and natural polyelectrolytes

Dasgupta, Jhilly; Sikder, Jaya; Mandal, Tamal; Adhikari, Utpal

doi:10.1016/j.jhazmat.2015.06.017

Cited by 13 publications

(11 citation statements)

References 41 publications

(118 reference statements)

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“…In addition, they represent a serious threat to global environmental sustainability since, in the aquatic environment, they hinder the penetration of light, causing flora not to carry out its photosynthesis process [ 4 , 5 ]. Moreover, the discharge of poorly fixed dyes into the terrestrial environment, together with industrial waste, causes an imbalance of nutrients affecting soil toxicology in agricultural fields, preventing the germination of seeds and the development of plants [ 6 ]. Dyes are also a threat to human health, because the intake of these dyes at small concentrations can cause cancer, allergy, dermatitis, and mutagenesis, among other health issues [ 2 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the discharge of poorly fixed dyes into the terrestrial environment, together with industrial waste, causes an imbalance of nutrients affecting soil toxicology in agricultural fields, preventing the germination of seeds and the development of plants [ 6 ]. Dyes are also a threat to human health, because the intake of these dyes at small concentrations can cause cancer, allergy, dermatitis, and mutagenesis, among other health issues [ 2 , 6 , 7 ]. Accordingly, several techniques have been developed to solve this problem.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, from an intermolecular point of view, the macromolecular complexation cooperates to produce better adsorption capability with respect to the use of the UF technique alone. Polymer–dye interactions are thermodynamically favorable, normally due to the presence of electrostatic, hydrophobic interactions, among others, which increase the solute retention performance [ 6 , 30 , 31 ]. Further advantages are that PEUF is environmentally friendly, is a continuous method, and easy to adapt to the characteristics of the effluent and the nature of the pollutant [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

“…Polymer–dye interactions are thermodynamically favorable, normally due to the presence of electrostatic, hydrophobic interactions, among others, which increase the solute retention performance [ 6 , 30 , 31 ]. Further advantages are that PEUF is environmentally friendly, is a continuous method, and easy to adapt to the characteristics of the effluent and the nature of the pollutant [ 6 ]. However, the operating principle of conventional ultrafiltration is the same as that of PEUF.…”

Section: Introductionmentioning

confidence: 99%

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Removal of Dyes by Polymer-Enhanced Ultrafiltration: An Overview

et al. 2021

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The current problem of contamination caused by colored industrial effluents has led to the development of different techniques to remove these species from water. One of them, polymer-enhanced ultrafiltration (PEUF), has been systematically studied in this mini review, in which research works from 1971 to date were found and analyzed. Dye retention rates of up to 99% were obtained in several cases. In addition, a brief discussion of different parameters, such as pH, interfering salts, type of polymer, dye concentration, and membrane type, and their influence in dye removal is presented. It was concluded from the above that these factors can be adapted depending on the pollutant to be remediated, in order to optimize the process. Finally, theoretical approaches have been used to understand the intermolecular interactions, and development of the studied technique. In this revision, it is possible to observe that molecular docking, molecular dynamics simulations, density functional theory calculations, and hybrid neural-genetic algorithms based on an evolutionary approach are the most usual approximations used for this purpose. Herein, there is a detailed discussion about what was carried out in order to contribute to the research development of this important science field.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Removal of Dyes by Polymer-Enhanced Ultrafiltration: An Overview

et al. 2021

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“…This pollution results from the inappropriate discharge of effluents [9,14]. In particular, colored effluents containing synthetic dyes lead to serious environmental problems, such as (i) destruction of the ecosystem because of decreased dissolved oxygen, (ii) inhibition of photosynthesis for self-purification by aquatic organisms due to blocked sunlight, and (iii) toxic/carcinogenic effects to animals and plants living in polluted water bodies [8,15,16]. Therefore, the fabrication of high-performance NF membranes is a key factor in the cost-effective treatment of wastewater containing synthetic dyes.…”

Section: Introductionmentioning

confidence: 99%

Post-Treatment of Nanofiltration Polyamide Membrane through Alkali-Catalyzed Hydrolysis to Treat Dyes in Model Wastewater

Jun

Yoon

Park

2019

Water

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This research focused on the influence of post-treatment using alkali-catalyzed hydrolysis with a full-aromatic nanofiltration (NF) polyamide membrane and its application to the efficient removal of selected dyes. The post-treated membranes were characterized through Fourier transform infrared spectroscopy, goniometry, and zeta-potential analysis to analyze the treatment-induced changes in the intrinsic properties of the membrane. Furthermore, the changes in permeability induced by the post-treatment were evaluated via the measurement of water flux, NaCl rejection, and molecular weight cutoff (MWCO) under different pH conditions and post-treatment times. Major changes induced by the post-treatment in terms of physicochemical properties were the enhancement of permeability, hydrophilicity, and negative charge due to the hydrolysis of the membrane’s amide bonds. Four different dyes were selected as representative organic pollutants considering the MWCO of the post-treated membranes. Compared with the pristine NF membrane, membranes post-treated at pH 13.5 showed better water flux with similar rejection of the target dyes. On the basis of these results, the proposed post-treatment method for NF membranes can be applied to the removal of organic pollutants of various size.

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