Improved separation of dyes and proteins using membranes made of polyphenylsulfone/cellulose acetate or acetate phthalate

Kumar, Mithun; Isloor, Arun M.; Todeti, Somasekhara Rao; Ibrahim, G.P. Syed; Inamuddin, .; Ismail, A.F.; Asiri, Abdullah M.

doi:10.1007/s10311-020-00965-3

Cited by 21 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, how to get rid of azo dye pollution from wastewater has been attracting significant attention. So far, numerous technical and engineering approaches have been engaged to treat azo dye wastewater, such as the adsorption method using activated carbon [ 9 ], membrane separation technology [ 10 ], magnetic separation technology [ 11 ], the chemical oxidation method [ 12 ] and the biological method [ 13 ]. Among these techniques, adsorption using a suitable adsorbent is an alternative procedure and exhibits the best results [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Oxidation-Induced and Hydrothermal-Assisted Template-Free Synthesis of Mesoporous CeO2 for Adsorption of Acid Orange 7

Ding

2022

Materials

View full text Add to dashboard Cite

Hydrogen peroxide (H2O2), an accessible and eco-friendly oxidant, was employed for the template-free hydrothermal synthesis of mesoporous CeO2 based on a cerium carbonate precursor (Ce2(CO3)3•xH2O). Its microstructure and physicochemical properties were characterized by XRD, TEM and N2 sorption techniques. The formation of the CeO2 phase with a porous structure was strongly dependent on the presence of H2O2, while the values of the BET surface area, pore diameter and pore volume of CeO2 were generally related to the amount of H2O2 in the template-free hydrothermal synthesis. The BET surface area and pore volume of the mesoporous CeO2 synthesized hydrothermally at 180 °C with 10 mL H2O2 were 112.8 m2/g and 0.1436 cm3/g, respectively. The adsorption process had basically finished within 30 min, and the maximum adsorption efficiency within 30 min was 99.8% for the mesoporous CeO2 synthesized hydrothermally at 140 °C with 10 mL, when the initial AO7 concentration was 120 mg/L without pH preadjustment. The experimental data of AO7 adsorption were analyzed using the Langmuir and Freundlich isotherm modes. Moreover, the mesoporous CeO2 synthesized at 140 °C with 10 mL H2O2 was regenerated in successive adsorption–desorption cycles eight times without significant loss in adsorption capacity, suggesting that the as-synthesized mesoporous CeO2 in this work was suitable as an adsorbent for the efficient adsorption of AO7 dye from an aqueous solution.

show abstract

Section: Introductionmentioning

confidence: 99%

Oxidation-Induced and Hydrothermal-Assisted Template-Free Synthesis of Mesoporous CeO2 for Adsorption of Acid Orange 7

Ding

2022

Materials

View full text Add to dashboard Cite

show abstract

“…Moreover, the removal efficiency was significantly increased from 82.7 mg g À1 for CA film to 519.1 mg g À1 for the porous CA-Ti-MIL-NH 2 film. 29,142,143,156,[158][159][160][161]242 (c) pharmaceuticals; 181,188,191,192,[195][196][197][198] (d) several selective polycyclic aromatic hydrocarbons (PAHs); 83,166,175,[243][244][245] and (e) pesticides including p-nitrophenol (PNP), 2,4-dinitrophenol (DNP), 3,5-dinitrosalicylic acid (DNSA), 2-methyl-4,6-dinitrophenol (DNOC), and 4-nitrophenyl phosphate disodium salt hexahydrate (NPP). 217,221,222 In another study, the removal efficiency of four pharmaceuticals by a cellulose triacetate (CTA)-based forward osmosis membrane was investigated.…”

Section: The Removal Of Contaminants By Adsorption Occurs When Thementioning

confidence: 99%

“…Fig.4Evidence for CA and CA-based membrane removal performance: (a) several heavy metals (Cu 2+ , Ni 2+ , Zn 2+ , Cd 2+ , Pb 2+ , and Fe 3+ );90,132,136,[138][139][140]241 (b) several industrial dyes including methylene blue (MB), Congo red (CR), reactive orange (RO), Reactive black (RB), indigo carmine (IC), and Rhodamine B;29,142,143,156,[158][159][160][161]242 (c) pharmaceuticals;181,188,191,192,[195][196][197][198] (d) several selective polycyclic aromatic hydrocarbons (PAHs);83,166,175,[243][244][245] and (e) pesticides including p-nitrophenol (PNP), 2,4-dinitrophenol (DNP), 3,5-dinitrosalicylic acid (DNSA), 2-methyl-4,6-dinitrophenol (DNOC), and 4-nitrophenyl phosphate disodium salt hexahydrate (NPP) 217,221,222. …”

mentioning

confidence: 99%

Cellulose acetate-based membrane for wastewater treatment—A state-of-the-art review

Islam¹,

Rashid²,

Shahruzzaman³

2023

Mater. Adv.

View full text Add to dashboard Cite

show abstract

“…The variation of the membrane surface roughness with varying amounts of incorporated p(MAO-DMPA) is shown in Figure 8, where the nodules or the brightest points are elevated areas, whilst the darker areas represent depressions on the membrane surfaces indicative of surface pores [71]. The surface roughness is reflected in the relative values of R a and R q parameters, the arithmetic mean deviation of roughness that is obtained by measuring the peak heights from one-dimensional plane and the root mean square Z-data, respectively [74]. It was observed that there was a general increase in these R parameters as the zwitterion content was increased.…”

Section: Afm Analysismentioning

confidence: 99%

Effect of the Zwitterion, p(MAO-DMPA), on the Internal Structure, Fouling Characteristics, and Dye Rejection Mechanism of PVDF Membranes

2020

View full text Add to dashboard Cite

The zwitterion poly-(maleic anhydride-alt-1-octadecene-3-(dimethylamino)-1-propylamine) (p(MAO-DMPA)) synthesized using a ring-opening reaction was used as a poly(vinylidene fluoride) (PVDF) membrane modifier/additive during phase inversion process. The zwitterion was characterized using proton nuclear magnetic resonance (1HNMR) and attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR). Atomic force microscopy (AFM), field emission scanning electron microscope (SEM), FTIR, and contact angle measurements were taken for the membranes. The effect of the zwitterionization content on membrane performance indicators such as pure water flux, membrane fouling, and dye rejection was investigated. The morphology of the membranes showed that the increase in the zwitterion amount led to a general decrease in pore size with a concomitant increase in the number of membrane surface pores. The surface roughness was not particularly affected by the amount of the additive; however, the internal structure was greatly influenced, leading to varying rejection mechanisms for the larger dye molecule. On the other hand, the wettability of the membranes initially decreased with increasing content to a certain point and then increased as the membrane homogeneity changed at higher zwitterion percentages. Flux and fouling properties were enhanced through the addition of zwitterion compared to the pristine PVDF membrane. The high (>90%) rejection of anionic dye, Congo red, indicated that these membranes behaved as ultrafiltration (UF). In comparison, the cationic dye, rhodamine 6G, was only rejected to <70%, with rejection being predominantly electrostatic-based. This work shows that zwitterion addition imparted good membrane performance to PVDF membranes up to an optimum content whereby membrane homogeneity was compromised, leading to poor performance at its higher loading.

show abstract

Improved separation of dyes and proteins using membranes made of polyphenylsulfone/cellulose acetate or acetate phthalate

Cited by 21 publications

References 9 publications

Oxidation-Induced and Hydrothermal-Assisted Template-Free Synthesis of Mesoporous CeO2 for Adsorption of Acid Orange 7

Oxidation-Induced and Hydrothermal-Assisted Template-Free Synthesis of Mesoporous CeO2 for Adsorption of Acid Orange 7

Cellulose acetate-based membrane for wastewater treatment—A state-of-the-art review

Effect of the Zwitterion, p(MAO-DMPA), on the Internal Structure, Fouling Characteristics, and Dye Rejection Mechanism of PVDF Membranes

Contact Info

Product

Resources

About