Polysulfone nanofiltration membranes enriched with functionalized graphene oxide for dye removal from wastewater

Abdelhamid, Ahmed E.; El‐Sayed, Ahmed A.; Khalil, Ahmed M.

doi:10.1515/polyeng-2020-0141

Cited by 55 publications

(21 citation statements)

References 47 publications

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“…Previous research suggested that acrylic fibers comprise at least 85% to 90% acrylonitrile, with the remainder comprising the acrylic-based monomer known as acrylic ester or acid [ 24 ]. Moreover, the wide peak at 3418 cm −1 could be attributed to absorbed water and the OH group for the additives of the polymer, whereas the peaks at 2860 and 2933 cm −1 correspond to the stretching of CH and CH 2 , respectively [ 46 ]. The band of 1230 cm −1 relates to the bending vibration CH 2 .…”

Section: Resultsmentioning

confidence: 99%

“…Figure 12 d shows that the AF blank membrane cross-section contained a macro-void-like structure with numerous large pores. These indicate the spontaneous de-mixing during the immersion of the membrane solution in the coagulation bath (phase inversion technique) [ 46 , 47 ]. The cross-section of AF-U and AF-S membranes ( Figure 12 e,f) contains a similar structure with no obvious aggregation of the microparticles of algae at these magnifications.…”

Section: Resultsmentioning

confidence: 99%

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Removal of Methylene Blue and Congo Red Using Adsorptive Membrane Impregnated with Dried Ulva fasciata and Sargassum dentifolium

Labena

Abdelhamid

Amin

et al. 2021

Plants

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Biosorption is a bioremediation approach for the removal of harmful dyes from industrial effluents using biological materials. This study investigated Methylene blue (M. blue) and Congo red (C. red) biosorption from model aqueous solutions by two marine macro-algae, Ulva fasciata and Sargassum dentifolium, incorporated within acrylic fiber waste to form composite membranes, Acrylic fiber-U. fasciata (AF-U) and Acrylic fiber-S. dentifolium (AF-S), respectively. The adsorption process was designed to more easily achieve the 3R process, i.e., removal, recovery, and reuse. The process of optimization was implemented through one factor at a time (OFAT) experiments, followed by a factorial design experiment to achieve the highest dye removal efficiency. Furthermore, isotherm and kinetics studies were undertaken to determine the reaction nature. FT-IR and SEM analyses were performed to investigate the properties of the membrane. The AF-U membrane showed a significant dye removal efficiency, of 88.9% for 100 ppm M. blue conc. and 79.6% for 50 ppm C. red conc. after 240 min sorption time. AF-S recorded a sorption capacity of 82.1% for 100 ppm M. blue conc. after 30 min sorption time and 85% for 100 ppm C. red conc. after 240 min contact time. The membranes were successfully applied in the 3Rs process, in which it was found that the membranes could be used for five cycles of the removal process with stable efficiency.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Removal of Methylene Blue and Congo Red Using Adsorptive Membrane Impregnated with Dried Ulva fasciata and Sargassum dentifolium

Labena

Abdelhamid

Amin

et al. 2021

Plants

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“…Cellulose acetate-Ulva fasciata composite polymer membrane (CA-U membrane) was prepared via an immersionprecipitation method [37,38]. Firstly, a blank cellulose acetate (CA) (Aldrich, 40% acetyl content) polymer was prepared by dissolving the cellulose acetate powder in acetone (20 wt%) (El-Nassar company, Egypt) in a closed conical flask with stirring at room temperature till complete solubility.…”

Section: Preparation Of Cellulose Acetate-ulva Fasciata Composite Membranementioning

confidence: 99%

Highly efficient adsorptive membrane for heavy metal removal based on Ulva fasciata biomass

Abdelhamid

Labena

Mansor

et al. 2021

Biomass Conv. Bioref.

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New composite adsorptive membranes were prepared from non-living Ulva fasciata (U), marine algae and cellulose acetate (CA) as polymer matrix to develop CA-U composite membranes with different ratios using the phase inversion technique. These CA-U membranes were used for cadmium (Cd 2+ ) and zinc (Zn 2+ ) ion removal from aqueous media. The prepared membranes were characterized via different instrumental techniques as ATR-FTIR, SEM and EDX in addition to swelling and porosity measurements. Afterwards, they were optimized for Cd 2+ and Zn 2+ removal through one factor at a time (OFAT) trials followed by full factorial design. The morphology and porosity measurements were highly affected by the addition of Ulva fasciata biosorbent and showed a large increase of the size and density of pores of the CA-U membrane. Maximum adsorption capacities (q max ) of 95.2 and 91.7 mg/g were obtained for Cd 2+ and Zn 2+ ions, respectively. Results established that all isotherm models attained R 2 more than 0.9, where the Langmuir isotherm achieved the highest one with R 2 0.9993 for Cd 2+ and 0.9965 for Zn 2+ , and the adsorption process belongs to the pseudo-1st-order kinetic model. The CA-U membrane displayed a higher affinity for Cd 2+ and Zn 2+ ion removal by three to four times than the blank CA membrane. Furthermore, 3R processes (removal, recovery and re-use) were applied and indicated the suitability of this system in heavy metal removal with high efficiency.

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“…Dye removal can be achieved through various routes comprising adsorption [18], filtration [19] or catalyzed degradation [20,21]. Herein, we focus on the catalyzed degradation of MO in aqueous solution in order to assess the catalytic activity of the actual CuNi-decorated biochar.…”

Section: Potential Environmental Remediation Application: Heterogeneous Catalyzed Degradation Of Methyl Orange (Mo)mentioning

confidence: 99%

Copper/nickel-Decorated Olive Pit Biochar: One Pot Solid State Synthesis for Environmental Remediation

Khalil¹,

Michely²,

Pirès³

et al. 2021

Preprint

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Developing micro- and nanomaterials for environmental pollution remediation is hot topic presently. Among the plethora of strategies, designing supported nanocatalysts for the degradation of pollutants witnessed constant renewal. In this context, we are addressing one of the UN Sustainable Development Goals by valorizing agrowaste as a source of biochar which serves as support for bimetallic nanocatalysts. Herein, Olive pit powder particles were impregnated with copper and nickel nitrates and pyrolyzed at 400 °C. The resulting material consists of bimetallic CuNi-decorated biochar. CuNi nanocatalysts were found to be as small as 10 nm and very well dispersed over biochar with zero valent copper and nickel and formation of copper-nickel solid solutions. The biochar@CuNi exhibited typical soft ferromagnet hysteresis loops with zero remanence and zero coercivity. The biochar@CuNi was found to be efficient catalyst of the reduction of methyl orange (MO) dye, taken as model pollutant.<br> To sum up, the one pot method devised in this work provided unique CuNi-decorated biochar and opens new horizons for the emerging topic of biochar-supported nanocatalysts.

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Polysulfone nanofiltration membranes enriched with functionalized graphene oxide for dye removal from wastewater

Cited by 55 publications

References 47 publications

Removal of Methylene Blue and Congo Red Using Adsorptive Membrane Impregnated with Dried Ulva fasciata and Sargassum dentifolium

Removal of Methylene Blue and Congo Red Using Adsorptive Membrane Impregnated with Dried Ulva fasciata and Sargassum dentifolium

Highly efficient adsorptive membrane for heavy metal removal based on Ulva fasciata biomass

Copper/nickel-Decorated Olive Pit Biochar: One Pot Solid State Synthesis for Environmental Remediation

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