Development of a novel dual-bioinspired method for synthesis of a hydrophobic/hydrophilic polyethersulfone coated membrane for membrane distillation

Ghorabi, Shima; Ashtiani, Farzin Zokaee; Karimi, Mohammad; Fouladitajar, Amir; Yousefi, Bahareh; Dorkalam, Farah

doi:10.1016/j.desal.2021.115242

Cited by 34 publications

(21 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The roughness of the membranes was expressed in terms of roughness average (SA), and the root mean square (SQ) of the data. SA is the arithmetic mean of the absolute values of the profile heights along the sampling or evaluation length while SQ is the root mean square average of the profile heights along the sampling or evaluation length 66,67 . In this current study, SQ values in nm were used to compare and describe the roughness of the membranes.…”

Section: Resultsmentioning

confidence: 99%

“…SA is the arithmetic mean of the absolute values of the profile heights along the sampling or evaluation length while SQ is the root mean square average of the profile heights along the sampling or evaluation length. 66,67 In this current study, SQ values in nm were used to compare and describe the roughness of the membranes. It is evident that the SQ values of the membranes slightly increased with an increase in Pd NPs content (M0 = 48.18 nm; M1 = 52.23 nm; M2 = 56.17 nm; and M3 = 62.43 nm).…”

Section: Afm and Contact Anglementioning

confidence: 99%

See 1 more Smart Citation

Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles

Ndlovu

Malatjie

Donga

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

Azo dyes effluent can cause severe and chronic effects to living organisms since they are toxic, carcinogenic, and mutagenic. They color water, reduce dissolved oxygen, block light penetration, decrease the rate of photosynthesis and adversely affect the whole aquatic biota. Catalysis is one of the methods used in degrading azo dyes to less harmful species. Catalytic palladium nanoparticles (Pd NPs) are effective in the degradation of azo dyes owing to their large surface area and unique electronic properties. However, they are costly, unstable and easily aggregate; hence, a substrate is necessary to enhance their stability, reusability, durability, catalytic efficiency, and cost effectiveness.Herein, Pd NPs were in-situ synthesized and immobilized in beta cyclodextrin (β-CD) modified polyvinylidene-fluoride (PVDF) membranes. The fabricated membranes were characterized using different techniques. Pd NPs slightly improved the properties and performance of the membranes. A complete catalytic degradation of methyl orange azo dye was carried out within 20 min in the presence of sodium borohydride and the increase in Pd NP content increased the rate of degradation. The membranes were recycled and reused five times with no considerable loss of catalytic performance. Therefore, PVDF/β-CD-Pd membranes proved to be self-cleaning, reusable, and efficient in removal of methyl orange from water.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Afm and Contact Anglementioning

confidence: 99%

Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles

Ndlovu

Malatjie

Donga

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Further research is necessary for the optimization of the membranes' performance. Additionally, membranes such as hydrophobic (PVDF, PTFE) or hyrdrophilic (PES), which are widely used in membrane distillation process [28][29][30] could be coated by SiF-NPs in order to estimate the compatibility of the coating with these membranes and to evaluate their perfomance.…”

Section: Dcmd and Fouling Evaluationmentioning

confidence: 99%

Superhydrophobic nanoparticle-coated PVDF–HFP membranes with enhanced flux, anti-fouling and anti-wetting performance for direct contact membrane distillation-based desalination

Tournis

Tsiourvas

Sideratou

et al. 2022

Environ. Sci.: Water Res. Technol.

View full text Add to dashboard Cite

show abstract

“…Based on previous works (Ghandashtani et al 2015;Tashvigh et al 2015;Armand et al 2017;Boshrouyeh et al 2018;Khodadousti 2019;Ghorabi et al 2021), the PES-SiO 2 membrane was prepared under the desired and specified preparation conditions as shown in Table 2. The non-solvent-induced phase separation (NIPS) was used to prepare the membrane.…”

Section: Membrane Preparation Filtration Module and Process Apparatusmentioning

confidence: 99%

Experimental studies on the effects of coagulation and adsorption as a pretreatment process on the microfiltration of oily wastewater

Shafiei

Ashtiani

Fouladitajar

2022

Journal of Water Reuse and Desalination

Self Cite

View full text Add to dashboard Cite

To improve the performance of the membrane process in the treatment of oily wastewater, the combined effects of pretreatment, membrane modification, and optimization of operating parameters on the microfiltration membrane system were investigated. First, coagulation and adsorption were used as pretreatment steps. Polyaluminium chloride and ferric chloride were employed as coagulants, and granular activated carbon was used as an adsorbent. In the optimal coagulation condition (1 g/L polyaluminium chloride, pH 7.5), chemical oxygen demand (COD) was reduced by 96%, while in the optimal adsorption condition, in which large amounts of activated carbon were utilized, 48% of COD was eliminated. A membrane of polyethersulfone containing SiO2-g-polymethacrylic acid (PMAA) nanoparticles was then prepared by the non-solvent-induced phase separation method. To reduce fouling and increase the flux of the membrane, the SiO2 nanoparticles were first activated with amine groups and then PMAA was grafted onto the surface of the particles. Subsequently, the operating parameters were studied to optimize the performance of the polyethersulfone (PES)/SiO2-g-PMAA membrane using the response surface methodology method. The results indicated that the flux of the modified membrane for pretreated wastewater was 72.2% higher than that of the PES membrane and non-pretreated wastewater at an optimum pressure of 2 bar and a flow rate of 3.5 L/min.

show abstract

Development of a novel dual-bioinspired method for synthesis of a hydrophobic/hydrophilic polyethersulfone coated membrane for membrane distillation

Cited by 34 publications

References 48 publications

Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles

Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles

Superhydrophobic nanoparticle-coated PVDF–HFP membranes with enhanced flux, anti-fouling and anti-wetting performance for direct contact membrane distillation-based desalination

Experimental studies on the effects of coagulation and adsorption as a pretreatment process on the microfiltration of oily wastewater

Contact Info

Product

Resources

About