Hybrid Membranes Based on Clay-Polymer for Removing Methylene Blue from Water

Khalil, Ahmed M.; Kenawy, Sayed H.

doi:10.17344/acsi.2019.5227

Cited by 32 publications

(12 citation statements)

References 32 publications

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“…may cause environmental problems even at trace amounts. Interestingly, these organic contaminants were removed using CPNs as adsorbent, due to the existence of polymeric hydrophobic parts on the NCs surfaces [ 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 ]. In this perspective, several CPNs in the form of powder or tablets were prepared using the thin-coated layer methods.…”

Section: Clay-polymers Nanocomposites For Pollutants Removalmentioning

confidence: 99%

“…Other polymer types were used to formulate PNCs useful for dyes removal [ 74 , 75 , 76 , 77 , 78 ]. For example, reactive yellow K-4G, and disperse yellow-brown S-2RFL were removed via NCs of poly(epicholorohydrin-dimethylamine) and bentonite with maximum adsorption capacity of 30.9 mg/g and 12.5 mg/g, respectively.…”

Section: Clay-polymers Nanocomposites For Pollutants Removalmentioning

confidence: 99%

“…The resulted materials have porous structure with expanded surface area. An optimum removal of MB from water was obtained with clay membrane loaded with 20% (wt/wt) polystyrene [ 78 ]. The mechanism of MB removal over clay-polymer composites was described in the literature [ 31 ] as shown in Figure 2 .…”

Section: Clay-polymers Nanocomposites For Pollutants Removalmentioning

confidence: 99%

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Clay-Polymer Nanocomposites: Preparations and Utilization for Pollutants Removal

et al. 2021

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Nowadays, people over the world face severe water scarcity despite the presence of several water sources. Adsorption is considered as the most efficient technique for the treatment of water containing biological, organic, and inorganic contaminants. For this purpose, materials from various origins (clay minerals, modified clays, zeolites, activated carbon, polymeric resins, etc.,) have been considered as adsorbent for contaminants. Despite their cheapness and valuable properties, the use of clay minerals as adsorbent for wastewater treatment is limited due to many factors (low surface area, regeneration, and recovery limit, etc.). However, clay mineral can be used to enhance the performance of polymeric materials. The combination of clay minerals and polymers produces clay-polymers nanocomposites (CPNs) with advanced properties useful for pollutants removal. CPNs received a lot of attention for their efficient removal rate of various organic and inorganic contaminants via flocculation and adsorption ability. Three main classes of CPNs were developed (exfoliated nanocomposites (NCs), intercalated nanocomposites, and phase-separated microcomposites). The improved materials can be explored as novel and cost-effective adsorbents for the removal of organic and inorganic pollutants from water/wastewater. The literature reported the ability of CPNs to remove various pollutants such as bacteria, metals, phenol, tannic acid, pesticides, dyes, etc. CPNs showed higher adsorption capacity and efficient water treatment compared to the individual components. Moreover, CPNs offered better regeneration than clay materials. The present paper summarizes the different types of clay-polymers nanocomposites and their effective removal of different contaminants from water. Based on various criteria, CPNs future as promising adsorbent for water treatment is discussed.

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Section: Clay-polymers Nanocomposites For Pollutants Removalmentioning

confidence: 99%

Section: Clay-polymers Nanocomposites For Pollutants Removalmentioning

confidence: 99%

Section: Clay-polymers Nanocomposites For Pollutants Removalmentioning

confidence: 99%

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Clay-Polymer Nanocomposites: Preparations and Utilization for Pollutants Removal

et al. 2021

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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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“…Formerly, various techniques were followed to get rid of synthetic dyes [11,[44][45][46]. In the present study, NF approach is utilized for dye removal from water by means of polymeric-based membranes.…”

Section: Investigating the Performance Of The Prepared Nf Membranesmentioning

confidence: 99%

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

Abdelhamid

El‐Sayed

Khalil

2020

Journal of Polymer Engineering

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Composite-nanofiltration membranes based on polysulfone (PSU) and functionalized graphene oxide (f-GO) were prepared for dye removal from aqueous media. Graphene oxide (GO) was introduced to enhance the performance of these membranes. GO was functionalized using an aminated heterocyclic compound, namely 6-amino-4-(4-nitrophenyl)-3-methyl-4-phenyl-4,7-dihydro-1H-pyrazolo-[3,4-b]pyridine-5carbonitrile. The f-GO was incorporated into the PSU membrane matrix in different weight ratios (0.25, 0.5, 1, 2 and 4 wt %). Characterizing the produced membranes with scanning electron microscope, Fourier Transform Infrared - Attenuated Total Reflectance (FTIR-ATR) and X-ray diffraction indicated the well dispersion of f-GO in the membrane matrix. The obtained membranes were applied to remove Congo red and methylene blue, as typical anionic and cationic dyes respectively from water. The modified membranes showed superior efficiency in terms of water flux and dye rejection upon being compared with the control membrane. The composite membranes loaded with f-GO exhibited promising dye removal efficiency for both dyes.

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Hybrid Membranes Based on Clay-Polymer for Removing Methylene Blue from Water

Cited by 32 publications

References 32 publications

Clay-Polymer Nanocomposites: Preparations and Utilization for Pollutants Removal

Clay-Polymer Nanocomposites: Preparations and Utilization for Pollutants Removal

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

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

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