Activated carbon nanoparticles entrapped mixed matrix polyethersulfone based nanofiltration membrane for sulfate and copper removal from water

Hosseini, S.M.; Amini, Shouresh; Khodabakhshi, A.R.; Bagheripour, E.; Bruggen, Bart Van der

doi:10.1016/j.jtice.2017.11.017

Cited by 77 publications

(32 citation statements)

References 31 publications

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“…(2018) [ 44 ] and Hosseini et al. [ 45 ] correlated this change of mechanical behavior with the interfacial bonding affected by cohesive and adhesive forces. Poor interfacial bonding means there are filler particles blocking the polymer chain formation.…”

Section: Resultsmentioning

confidence: 99%

“…However, the tensile strengths of AC/AlgPU1 and AC/AlgPU2 are still in par with their materials, especially Hosseini et al. (2017) in which their material only reached 3.65 MPa at maximum [ 45 ]. Even though the mechanical properties of AlgPU1 and AC/AlgPU2 are worse than AlgPU, including the 45–48% reduction of elongation at break, the adsorption ability is far off better, which will be explained in the following section.…”

Section: Resultsmentioning

confidence: 99%

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Polyurethane film prepared from ball-milled algal polyol particle and activated carbon filler for NH3–N removal

Marlina

Iqhrammullah

Saleha

et al. 2020

Heliyon

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This research offers a novel approach of free chemical preparation to obtain algae-based biopolyol through a ball milling method. The algae-based polyurethane (AlgPU) film was obtained from a casting solution made of ball-milled algal polyol particle and methylene diphenyl diisocyanate (MDI). The characteristics of the material had been investigated using Fourier Transform Infrared, Scanning Electron Microscopy – Electron Dispersive Spectroscopy, Differential Scanning Calorimetry, and Tensile Strength Analysis. The surface area was determined by Brunauer–Emmett–Teller (BET) isotherm, meanwhile the total pore volume was by Barrett-Joyner-Halenda (BJH) isotherm, based on the adsorption-desorption of N 2 . The addition of activated carbon contributed in the increase of functional group and surface area, which were important for the NH 3 –N removal. As a result, the adsorption capacity increased greatly after the addition of activated carbon (from 187.84 to 393.43 μg/g). The results also suggested AlgPU as a good matrix for immobilizing activated carbon filler. The adsorption shows a better fit with Langmuir isotherm model, with R 2 = 0.97487 and root-mean-square error (RMSE) = 33.91952, compared to Freundlich isotherm model (R 2 = 0.96477 and RMSE = 44.05388). This means the NH 3 –N adsorption followed the assumption of homogenous and monolayer adsorption, in which the maximum adsorption was found to be 797.95 μg/g. This research suggests the potential of newly developed material for NH 3 –N removal.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Polyurethane film prepared from ball-milled algal polyol particle and activated carbon filler for NH3–N removal

Marlina

Iqhrammullah

Saleha

et al. 2020

Heliyon

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“…The aforementioned concept is commonly defined as composite or mixed matrix membranes [20]. As a membrane filler, activated carbon promoted the enhancement of the membrane surface hydrophilicity in a polyethersulfone (PES) nanofiltration membrane for sulfate and copper removal [21] and a nanofiber polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) membrane for direct contact membrane distillation [22]. Activated carbon-embedded membranes also helped with reducing fouling in polyvinylidene fluoride (PVDF) ultrafiltration for water treatment [23] and for treatment of dairy effluent [24].…”

Section: Introductionmentioning

confidence: 99%

Unravelling the Potency of Activated Carbon Powder Derived from Cultivated Marine Microalgae as a Promising Filler in Mixed Matrix Membranes

2019

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Activated carbon-filled mixed matrix membranes were commonly used to enhance the separation performance of liquid or gas separation processes. Activated carbon is traditionally derived from agricultural crops such as coconut shells or wood biomass. Marine microalgae however have a great potential to produce powdered activated carbon. In this study, marine microalgae Chlorella vulgaris have been evaluated for their carbon content, and the 16.09% carbon content has potential to be employed as a raw material in manufacturing activated carbon powder. Dry microalgae were carbonized at a temperature of 500 °C for 30 min, at a constant increment rate of temperature of 10 °C per minute to produce microalgae charcoal. Chemically-based activation treatments using H3PO4 and ZnCl2 with concentrations of 10%, 30%, and 50%, respectively, assisted by microwave irradiation, have been used to prepare activated carbon. The properties of activated carbon powder were analyzed including yields, ash content, volatile substances, pure activated carbon content, absorption of iodine solution, surface area, and imaging of activated carbon using SEM-EDX. The best treatment characteristics were obtained using H3PO4 at a concentration of 50% with characteristics of 19.47% yield, 11.19% ash content, 31.92% volatile content, 56.89% pure activated carbon, 325.17 mg g−1 iodine absorption, and 109.273 m2 g−1 surface area based on the Brunauer–Emmett–Teller (BET) method, as well as a 5.5-nm average pore diameter. The SEM-EDX imaging results showed the formation of micropores on the surface of activated carbon, with carbon content reaching 72.31%; however, impurities could decrease the surface area and reduce the absorption performance of microalgae activated carbon.

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“…Moreover, the absence of characteristic FTIR peaks of the biochar on the top and bottom surface of the MMMs indicated that there was no migration to either side of the film, and the biochar remained within the cross section. Considering that the migration of fillers to the surface of MMMs has been observed before, the concentration of biochar at the top surface may have been too dilute to measure its characteristic peaks by FTIR.…”

Section: Discussionmentioning

confidence: 98%

Biochar as a filler in mixed matrix materials: Synthesis, characterization, and applications

Lewis

Miller

Crumb

et al. 2019

J of Applied Polymer Sci

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The use of mixed-matrix materials (MMM) has become a major topic of research in recent years, due to unique properties achieved in these composites. In this work, biochar from sunflower seed hull pyrolysis and biochar/polysulfone (PSF) MMMs were produced and characterized. The optimal pyrolysis temperature for biochar production was determined to be 500 C. The resulting biochar properties were an iodine number of 203 mg/g and a pore volume of 0.595 mL/g. In MMM fabrication, the use 4% ethanol as nonsolvent in the wet phase inversion process increased the glass transition temperature by 8 C, indicating improved biochar/PSF interaction. The presence of biochar was shown to create pores in otherwise dense surfaces. The critical surface energy was also increased by the addition of biochar from 28.6 mN/m in pristine PSF to 35.7 mN/m in biochar/PSF MMMs. We identified and discussed several potential applications based on the determined properties.

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Activated carbon nanoparticles entrapped mixed matrix polyethersulfone based nanofiltration membrane for sulfate and copper removal from water

Cited by 77 publications

References 31 publications

Polyurethane film prepared from ball-milled algal polyol particle and activated carbon filler for NH3–N removal

Polyurethane film prepared from ball-milled algal polyol particle and activated carbon filler for NH3–N removal

Unravelling the Potency of Activated Carbon Powder Derived from Cultivated Marine Microalgae as a Promising Filler in Mixed Matrix Membranes

Biochar as a filler in mixed matrix materials: Synthesis, characterization, and applications

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