Effective treatment of dye polluted wastewater using nanoporous CaCl2 modified polyethersulfone membrane

Rambabu, K.; Bharath, G.; Monash, Purushothaman; Velu, S.; Banat, Fawzi; Naushad, Mu.; Arthanareeswaran, G.; Show, Pau Loke

doi:10.1016/j.psep.2019.02.015

Cited by 88 publications

(38 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Additional characteristics of this higher permeability included the hydrophilic nature of the clay, thickness of the filtering skin layer, porosity, and tortuosity. These factors have been shown to provide greater membrane efficiency [23]. In the indigo flow (Figure 7), the fouling phenomenon did not appear, which was expected because the fluid used composed solids, which could adhere to the pores of the membrane and preclude a favorable flow when compared to of water.…”

Section: Membrane Flow Properties and Efficiencymentioning

confidence: 92%

“…The increase in porosity is due to the clay acting as a porogenic agent together with the PVP in the membrane formation, obtaining a uniform porous morphology [21,22]. They also presented a greater number of fingers in every cross-section, where they are characteristic of PES membranes [23]. This happens due to the contact of the membrane with nonsolvent bath, occurring the spinodal decomposition with localized stresses [24].…”

Section: Membrane Morphologymentioning

confidence: 99%

Section: Membrane Flow Properties and Efficiencymentioning

confidence: 99%

“…In addition, although rejection was a little lower for the other membranes, the obtained results were satisfactory. These high rejections were probably due to the effects of combining size exclusion along with electrostatic repulsion, which plays a critical role in effecting dye separation for the membranes under study [23]. Solutes and dyes may form dimers in water, where trimers, tetramers and other aggregates may form due to the agglomeration of dye dimers in a gradual manner.…”

Section: Membrane Flow Properties and Efficiencymentioning

confidence: 99%

See 3 more Smart Citations

Treatment of Effluents from the Textile Industry through Polyethersulfone Membranes

Ferreira

Salviano

Oliveira

et al. 2019

Water

View full text Add to dashboard Cite

Membranes have been widely used in the treatment of industrial effluents. However, there are still some limitations in the separation and permeability with respect to these effluents. Therefore, this study investigated the addition of 1% and 5% of an inorganic filler (clay) in polyethersulfone polymer membranes. By contact angle analysis, it was observed that the clay influenced the hydrophilicity of the membrane. The presence of the clay had an important role in the morphology of the membrane, modifying and favoring a greater quantity of pores and macropores for the porous support. For the tensile test, it was seen that the high clay content decreased the membranes properties. The flow tests, having a flow stabilized around 300 L/h·m 2 for membranes containing clay, evidenced the efficiency of the membrane for the treatment of indigo blue, representing a 200% increase in relation to polyethersulfone membrane. The membrane containing 1% of clay presented the highest level of rejection to the effluent, around 94.0%. Thus, it was evident that the addition of montmorillonite clay modified the membrane structure contributing to a higher selectivity and permeability.

show abstract

Section: Membrane Flow Properties and Efficiencymentioning

confidence: 92%

Section: Membrane Morphologymentioning

confidence: 99%

Section: Membrane Flow Properties and Efficiencymentioning

confidence: 99%

Section: Membrane Flow Properties and Efficiencymentioning

confidence: 99%

See 2 more Smart Citations

Treatment of Effluents from the Textile Industry through Polyethersulfone Membranes

Ferreira

Salviano

Oliveira

et al. 2019

Water

View full text Add to dashboard Cite

show abstract

“…[1][2][3] As the removal of organic pollutants from the environment has become a strenuous task, various conventional methods, such as flocculation, adsorption, biological process, and membrane technology, have been employed. [4][5][6][7][8] Despite the fact that every process has its pros and cons, the membrane separation technique has garnered considerable interest in wastewater purification due to its simple operation process, less energy consumption, cost-effectiveness, and stable product quality. [9][10][11] In the membrane technology, membrane fouling diminishes the longevity of the membrane, but that issue can be vanquished by adopting an advanced oxidation process (AOP).…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic removal of organic pollutants and self‐cleaning performance of PES membrane incorporated sulfonated graphene oxide/ZnO nanocomposite

Boopathy

Arthanareeswaran

Ashok

2020

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND: Membrane technology is highly applicable to water purification due to its simple operation process. During the treatment of organic wastewater, the organic compounds are deposited on the membrane surface, which leads to membrane fouling. To alleviate this problem, the membrane separation process could be combined with eco-friendly photocatalytic technology. In this regard, facile synthesized nanomaterials, such as sulfonated graphene oxide (SGO), zinc oxide (ZnO), and SGO/ZnO (SGZ) are incorporated in a polyethersulfone (PES) membrane matrix used for antifouling analysis and degradation of organic pollutants in the presence of UV light irradiation. RESULTS: X-ray diffraction (XRD) and Transmission Electron Microscopy (TEM) analysis shows that ZnO is bound strongly within the SGO-ZnO nanocomposite. The optical property was also altered for hybrid SGO-ZnO nanocomposite as compared to the ZnO photocatalyst. The physicochemical characterization of PES-SGO, PES-ZnO, and PES-SGZ nanocomposite membranes was studied. Hydrophilicity and water flux are improved with the addition of nanomaterials. Among the membranes, PES-SGZ nanocomposite membranes exhibit maximum water flux and lower contact angle value of 152 L m −2 h −1 and 51.9°, respectively. The photocatalytic activity of the membrane was assessed by organic pollutants under the UV light. The PES-SGZ nanocomposite membrane revealed higher photocatalytic efficiency for crystal violet at 92.3% and ciprofloxacin at 95.1%. CONCLUSION: The modified PES membranes enhanced antifouling and hydrophilic properties. Specifically, the PES-SGZ nanocomposite membrane proved to be a superior material for the effective photodegradation of organic pollutants and it achieved a higher water flux. To conclude, the prepared photocatalytic membrane could have vast potential in the treatment of toxic organic industrial effluents.

show abstract

Development and characterization of porous membranes based on PPSU/PES using polyethylene glycol as porogen: Application for cobalt removal by polyelectrolyte‐enhanced ultrafiltration

Nafti‐Mateur,

Jaouadi,

Van der Bruggen

et al. 2023

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUNDIn this work, polyphenylsulfone /polyethersulfone (PPSU /PES) composite membrane was successfully prepared using the phase inversion method in the presence of polyethylene glycol (PEG) as the hydrophilic additive. The effect of concentration of PEG (0, 2, 4, and 6 wt.%), were investigated by SEM, FTIR, TGA, and contact angle analysis.RESULTSThe obtained results confirmed that the morphology and hydrophilicity of theporous membrane varied with the addition of PES as reinforcing agent and the PEG concentration as porogen. SEM results confirmed that the membranes obtained have a high permeability with a finger‐shaped structure and that the size and density of the pores increase with the increase in the incorporated PEG. The contact angle was decreased and the porosity of the PPPn blend membranes was increased from 16.06 with the neat PPSU membrane to 385. 3 Lh−1m−2 bar−1 with the PPP6 membrane. A strong interaction between the composition of (PPSU, PES and PEG) was revealed by FTIR and TGA analysis.CONCLUSIONThe filtration results showed PPP2 is the better formulation of the dope suspension in the range ultrafiltration membranes in terms of flux (179.3 Lh−1m−2 bar−1) and BSA retention (94%).The application of polyelectrolyte enhanced ultrafiltration (PEUF) using polyethylenimine (PEI) for the removal of cobalt ions allowed obtaining high removal rates (92.5%). The optimal performances have been obtained at pH ≥ 4, 4 bars of transmembrane pressure and 1200 ppm of PEI.This article is protected by copyright. All rights reserved.

show abstract

Effective treatment of dye polluted wastewater using nanoporous CaCl2 modified polyethersulfone membrane

Cited by 88 publications

References 56 publications

Treatment of Effluents from the Textile Industry through Polyethersulfone Membranes

Treatment of Effluents from the Textile Industry through Polyethersulfone Membranes

Photocatalytic removal of organic pollutants and self‐cleaning performance of PES membrane incorporated sulfonated graphene oxide/ZnO nanocomposite

Development and characterization of porous membranes based on PPSU/PES using polyethylene glycol as porogen: Application for cobalt removal by polyelectrolyte‐enhanced ultrafiltration

Contact Info

Product

Resources

About