Multi-functional polyethersulfone nanofibrous membranes with ultra-high adsorption capacity and ultra-fast removal rates for dyes and bacteria

Bao, Jianxu; Li, Hang; Xu, Yuanting; Chen, Shengqiu; Wang, Zhou‐jun; Jiang, Chunji; Li, Huilin; Wei, Zhiwei; Sun, Shudong; Zhao, Weifeng; Zhao, Changsheng

doi:10.1016/j.jmst.2020.10.065

Cited by 44 publications

(11 citation statements)

References 40 publications

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“…Many membrane filtration systems are installed in these factory premises to ensure high control of the treated water consistency and quality for their production or manufacturing process. It has been reported that membranes are more effective in removing contaminants such as bacteria and dyes than adsorption technology [65]. All these findings have consolidated that, with a proper design of the membrane water filtration systems, high quality of filtrate can be produced.…”

Section: Advantages and Disadvantages Of Membrane Technologies For Water Treatmentmentioning

confidence: 90%

A Review on the Use of Membrane Technology Systems in Developing Countries

et al. 2021

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Fulfilling the demand of clean potable water to the general public has long been a challenging task in most developing countries due to various reasons. Large-scale membrane water treatment systems have proven to be successful in many advanced countries in the past two decades. This paves the way for developing countries to study the feasibility and adopt the utilization of membrane technology in water treatment. There are still many challenges to overcome, particularly on the much higher capital and operational cost of membrane technology compared to the conventional water treatment system. This review aims to delve into the progress of membrane technology for water treatment systems, particularly in developing countries. It first concentrates on membrane classification and its application in water treatment, including membrane technology progress for large-scale water treatment systems. Then, the fouling issue and ways to mitigate the fouling will be discussed. The feasibility of membrane technologies in developing countries was then evaluated, followed by a discussion on the challenges and opportunities of the membrane technology implementation. Finally, the current trend of membrane research was highlighted to address future perspectives of the membrane technologies for clean water production.

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Section: Advantages and Disadvantages Of Membrane Technologies For Water Treatmentmentioning

confidence: 90%

A Review on the Use of Membrane Technology Systems in Developing Countries

et al. 2021

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“…Nanotechnologies possess great potential to improve water and wastewater treatment, increasing treatment efficiency as well as increasing water supply through the safe use of unconventional water sources [ 18 ]. The advantages of nanomaterials are high specific area, fast dispersion ability, high reactivity, and sorption ability to various organic pollutants [ 19 , 20 , 21 ], heavy metals [ 22 , 23 ] and bacteria [ 24 , 25 ]. Carbon nanomaterials [ 26 , 27 , 28 ], nanomaterials based on metals and metal oxides [ 29 , 30 , 31 ], and composite nanoparticles with magnetic and ferromagnetic properties [ 32 , 33 , 34 ] are widely applied for water purification [ 35 ].…”

Section: Materials For Membrane Purificationmentioning

confidence: 99%

Recent Advances on Membranes for Water Purification Based on Carbon Nanomaterials

et al. 2022

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Every year the problem of water purification becomes more relevant. This is due to the continuous increase in the level of pollution of natural water sources, an increase in the population, and sharp climatic changes. The growth in demand for affordable and clean water is not always comparable to the supply that exists in the water treatment market. In addition, the amount of water pollution increases with the increase in production capacity, the purification of which cannot be fully handled by conventional processes. However, the application of novel nanomaterials will enhance the characteristics of water treatment processes which are one of the most important technological problems. In this review, we considered the application of carbon nanomaterials in membrane water purification. Carbon nanofibers, carbon nanotubes, graphite, graphene oxide, and activated carbon were analyzed as promising materials for membranes. The problems associated with the application of carbon nanomaterials in membrane processes and ways to solve them were discussed. Their efficiency, properties, and characteristics as a modifier for membranes were analyzed. The potential directions, opportunities and challenges for application of various carbon nanomaterials were suggested.

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“…Low concentrations of bacteria in the environment can cause people to suffer from possible diseases, but these concentrations are often far beyond the detection range of instruments. Previous microbiology methods, including bacterial culture [ 9 ] or multiplex polymerase chain reaction (PCR) assay [ 10 , 11 ], immunology-based methods [ 12 , 13 ], have the following problems: long detection time, vulnerability to microbial contamination, limited laboratories of professional inspection institutions, and the inability to enrich and detect bacteria on-site in time [ 14 ]. Therefore, efficient enrichment of bacteria is a necessary and urgent matter, and the commonly used nanocomposite for electrostatic adsorption of bacteria are polyethersulfone nanofibrous membranes [ 15 ], flexible graphene oxide (GO) microsheets [ 16 ], and so on, but the production conditions of these materials are harsh, and the production process is complex.…”

Section: Introductionmentioning

confidence: 99%

Fe3O4@PDA@PEI Core-Shell Microspheres as a Novel Magnetic Sorbent for the Rapid and Broad-Spectrum Separation of Bacteria in Liquid Phase

Zhang¹,

Du²,

Wu³

et al. 2022

Materials

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Bacterial infection is a significant cause of morbidity and mortality to humans worldwide. Thus, a method for nonspecific, sensitive, and rapid enrichment of such bacteria is essential for bacteria detection and treatment. This study demonstrates a self-made core-shell Fe3O4@Polydopamine@Polyethyleneimine magnetic beads (Fe3O4@PDA@PEI MBs) with a high density positive charge-based magnetic separation scheme for the broad-spectrum rapid enrichment of microorganisms in the liquid phase. MBs with a high-density positive charge have a strong electrostatic attraction to most microorganisms in nature. Our scheme is as follows: (1) wrapping dopamine (DA) on the iron oxide through self-polymerization and wrapping PEI on the outermost shell layer in a mode of crosslinking with the PDA; (2) subsequently, the Fe3O4@PDA@PEI MBs were used to concentrate microorganisms from the sample solution; (3) performing magnetic separation and calculating the adsorption efficiency. The as-prepared Fe3O4@PDA@PEI MBs composite was carefully characterized by zeta potential analysis, Value stream-mapping (VSM), transmission electron microscopy (TEM), and Fourier transforms infrared spectrometry (FT-IR). In this study, both gram-positive and gram-negative bacteria could be captured in three minutes through electrostatic interaction. Furthermore, the adsorption efficiency on gram-negative (>98%) is higher than that on gram-positive (>95%), allowing for a simple, rapid assay to enrich organisms in resource-limited settings.

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Multi-functional polyethersulfone nanofibrous membranes with ultra-high adsorption capacity and ultra-fast removal rates for dyes and bacteria

Cited by 44 publications

References 40 publications

A Review on the Use of Membrane Technology Systems in Developing Countries

A Review on the Use of Membrane Technology Systems in Developing Countries

Recent Advances on Membranes for Water Purification Based on Carbon Nanomaterials

Fe3O4@PDA@PEI Core-Shell Microspheres as a Novel Magnetic Sorbent for the Rapid and Broad-Spectrum Separation of Bacteria in Liquid Phase

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