An eco-friendly and reusable syringe filter membrane for the efficient removal of dyes from water via low pressure filtration assisted self-assembling of graphene oxide and SBA-15/PDA

Subrahmanya, T.M.; Widakdo, Januar; Manickam, Sivakumar; Austria, Hannah Faye M.; Hung, Wei‐Song; Makari, Hanumanthappa K.; Nagar, Jitendra Kumar; Hu, Chien‐Chieh; Lai, Juin‐Yih

doi:10.1016/j.jclepro.2022.131425

Cited by 46 publications

(8 citation statements)

References 46 publications

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“…As a result, the positively charged MB molecules cannot be adsorbed in acidic solution, yet the negatively charged EBT molecules can be adsorbed onto the surface of the PAN/GO/PDA membrane. As a result, through pH adjustment, adsorption–desorption behavior can be obtained with the PAN/GO/PDA membrane in relation to pollutant molecules [ 39 , 43 ].…”

Section: Resultsmentioning

confidence: 99%

Recyclable Composite Membrane of Polydopamine and Graphene Oxide-Modified Polyacrylonitrile for Organic Dye Molecule and Heavy Metal Ion Removal

et al. 2022

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Developing efficient and recyclable membranes for water contaminant removal still remains a challenge in terms of practical applications. Herein, a recyclable membrane constituted of polyacrylonitrile-graphene and oxide-polydopamine was fabricated and demonstrated efficient adsorption capacities with respect to heavy metal ions (62.9 mg g−1 of Cu2+ ion, CuSO4 50 mg L−1) and organic dye molecules (306.7 mg g−1 of methylene blue and 339.6 mg g−1 of eriochrome black T, MB/EBT 50 mg L−1). The polyacrylonitrile fibers provide the skeleton of the membrane, while the graphene oxide and polydopamine endow the membrane with hydrophilicity, which is favorable for the adsorption of pollutants in water. Benefitting from the protonation and deprotonation effects of graphene oxide and polydopamine, the obtained membrane demonstrated promotion of the selective adsorption or desorption of pollutant molecules. This guarantees that the adsorbed pollutant molecules can be desorbed promptly from the membrane through simple pH adjustment, ensuring the reusability of the membrane. After ten adsorption–desorption cycles, the membrane could still maintain a desirable adsorption capacity. In addition, compared with other, similar membranes reported, this composite membrane displays the highest mechanical stability. This work puts forward an alternative strategy for recyclable membrane design and expects to promote the utilization of membrane techniques in practical wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

Recyclable Composite Membrane of Polydopamine and Graphene Oxide-Modified Polyacrylonitrile for Organic Dye Molecule and Heavy Metal Ion Removal

et al. 2022

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“…In membrane separation processes, such as microfiltration, ultrafiltration, nanofiltration, and reverse osmosis, the membrane pressure is also a critical factor. This technique is highly effective, simple to adopt, and resistant to temperature and microbial attack, but its drawbacks are membrane fouling and clogging, as well as a high cost [27].…”

Section: Physical and Physicochemical Treatmentmentioning

confidence: 99%

Methylene blue and Congo red removal by activated carbons: A current literature

Hao

Othman

Zaini

2022

Acta Universitatis Sapientiae, Agriculture and Environment

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Dye is a major source of water pollution. This mini-review highlights the origin of dye, its removal strategies, and the recent literature of methylene blue and Congo red adsorption by activated carbons. Adsorption is a unique process that relies upon the physicochemical properties of the activated carbon and the inherent characteristics of dye. Also, factors affecting adsorption, such as contact time, temperature, and concentration, were discussed to gain insight into dye removal mechanisms.

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“…Traditional methods of removing pollutants include filtration, membrane technology, oxidation, coagulation, biological processes, precipitation, disinfection and adsorption. [7][8][9][10][11][12] However, these techniques suffer from drawbacks, like high costs and energy consumption, and can generate additional hazardous waste. What's more, most of these methods are not effective in removing trace contaminants.…”

Section: Introductionmentioning

confidence: 99%

“…Unlike other photoactive MOFs, MIL-Fe MOFs have a band gap of 1.88 to 3.63 eV, 33,34 which allows direct excitation with visible light. In addition, MIL(Fe) MOFs exhibit key advantages compared to representative MOFs: they demonstrate high water adsorption (about 0.77 g) 35 and stability across a wide pH range (2-12) compared to others (3)(4)(5)(6)(7)(8)(9)(10), offer low toxicity and biocompatibility for diverse applications, benefit from abundant and cost-effective iron content, and possess exceptional surface area and porosity. 36 This review presents the latest synthesis techniques, structural diversity, advantages and main applications of MIL-(53, 68, 88A, 88B, 100 and 101)-Fe MOFs in wastewater purification along with the mechanisms involved.…”

Section: Introductionmentioning

confidence: 99%

Recent trends on MIL-Fe metal–organic frameworks: synthesis approaches, structural insights, and applications in organic pollutant adsorption and photocatalytic degradation

Channab,

El Ouardi,

Ait Layachi

et al. 2023

Environ. Sci.: Nano

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An eco-friendly and reusable syringe filter membrane for the efficient removal of dyes from water via low pressure filtration assisted self-assembling of graphene oxide and SBA-15/PDA

Cited by 46 publications

References 46 publications

Recyclable Composite Membrane of Polydopamine and Graphene Oxide-Modified Polyacrylonitrile for Organic Dye Molecule and Heavy Metal Ion Removal

Recyclable Composite Membrane of Polydopamine and Graphene Oxide-Modified Polyacrylonitrile for Organic Dye Molecule and Heavy Metal Ion Removal

Methylene blue and Congo red removal by activated carbons: A current literature

Recent trends on MIL-Fe metal–organic frameworks: synthesis approaches, structural insights, and applications in organic pollutant adsorption and photocatalytic degradation

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