Electrospun membrane of cellulose acetate for heavy metal ion adsorption in water treatment

Tian, Ye; Wu, Min; Liu, Ruigang; Li, Yanxiang; Wang, Deqian; Tan, Junjun; Wu, Rongcheng; Huang, Yong

doi:10.1016/j.carbpol.2010.08.054

Cited by 269 publications

(115 citation statements)

References 27 publications

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“…The sorbents could be infinitely recycled. Tian et al (2011) studied cellulose acetate (CA) nonwoven membrane, prepared by electrospinning and surface modified with poly(methacrylic acid) (PMAA) using Ce 4+ initiated radical graft copolymerization), for heavy metal ions (Cu 2+ , Hg 2+ and Cd 2+ ) adsorption in water. It was observed that this membrane had quite high adsorption selectivity for Hg 2+ .…”

Section: Electrospun Nanofibersmentioning

confidence: 99%

Removal of heavy metals and pollutants by membrane adsorption techniques

2018

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Application of polymeric membranes for the adsorption of hazardous pollutants may lead to the development of next-generation reusable and portable water purification appliances. Membranes for membrane adsorption (MA) have the dual function of membrane filtration and adsorption to be very effective to remove trace amounts of pollutants such as cationic heavy metals, anionic phosphates and nitrates. In this review article, recent progresses in the development of MA membranes are surveyed. In addition, recent progresses in the development of advanced adsorbents such as nanoparticles are summarized, since they are potentially useful as fillers in the host membrane to enhance its performance. The future directions of R&D in this field are also shown in the conclusion section.

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Section: Electrospun Nanofibersmentioning

confidence: 99%

Removal of heavy metals and pollutants by membrane adsorption techniques

2018

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“…However, the heavy metal ions are in different states depending on solution pH, and the active component in nanofibers is unstable or dissolves under strong acidity, which would significantly influence the removal capacity, so the initial pH value of the solution should be optimized (Fig. 19.4c) [31,40,68]. Importantly, the initial concentration and the extraction time also have great impact on the adsorption capacity.…”

Section: Heavy Metal Ionsmentioning

confidence: 96%

“…To increase the adsorption of heavy metals on nanofiber materials, the following methods have attracted the most attention: (1) utilizing polymers which contain a molecular functional group as resources to electrospinning, such as cellulose acetate (CA), silk fibroin (SF), wool keratin (WK), and PA-6 [15,[64][65][66][67]; (2) surface modification with functional group (the removal efficiency of heavy metal ions increases significantly after the adsorbents have been modified by functional group of -NH 2 , -SH, -SO 3 H, -COO , etc.) [35,62,68]; and (3) increasing the surface areas of nanofibers [31].…”

Section: Heavy Metal Ionsmentioning

confidence: 99%

Adsorbents Based on Electrospun Nanofibers

Wang

2014

Nanostructure Science and Technology

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In the past few decades, removing or controlling the concentration levels of the pollutants including toxic gases, heavy metal ions, and organic contaminants in environmental systems has attracted tremendous attention. Among the numerous approaches, adsorption is considered to be one of the most versatile and promising approach in removing pollutants due to its convenience, ease of operation, simplicity of design, and universal in use. Electrospun nanofibers have unique properties such as large surface area, tailored pore structure, high porosity, and flexibility of surface functionalization, therefore could be used as advanced adsorbents for contaminant removal. Importantly, nanofiber-based adsorbents are expected to possess strong adsorption capacity, fast kinetics, and good reproducibility due to the unique structure of nanofibers. In this chapter, we summarize recent progress in the development of electrospun nanofibrous membrane-based adsorbent for the removal of toxic gases and pollutants in aqueous solution (heavy metal ions and organic contaminants), describe the design of the nanofibrous materials, and discuss their adsorption performance in detail. This chapter might trigger further development and evolution of adsorption based on electrospun nanofibers as one potential to ease the environmental pollution problem.

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“…Conventional synthetic polymers such as polyvinylidene fluoride (PVDF) were first used as battery separator as well as in fuel cell and solar cell applications [22,23] and later in ultrafiltration and membrane distillation applications [18,24]. Other polymers such as polyacrylonitrile (PAN) [25][26][27][28][29][30], CA [31][32][33], and PEO [14,34] were electrospun alone or together with other copolymers. Natural polymers such as silk [35][36][37] and chitin [38] have also been electrospun.…”

Section: Polymer Propertiesmentioning

confidence: 99%

Electrospun Nanofiber Membranes and Their Applications in Water and Wastewater Treatment

Tabe

2014

Lecture Notes in Nanoscale Science and Technology

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Electrospun nanofiber membranes (ENMs) are cutting edge new generation of membranes that offer significantly higher flux at similar rejection rate compared with the conventional membranes. Electrospinning has allowed for fabrication of highly porous ENMs with controllable pore size in the range of microfiltration and ultrafiltration. ENMs could replace conventional water treatment membranes with smaller systems that operate at lower pressures. In this chapter, the fundamentals of ENMs are presented and characterization methods, properties, and applications are discussed. IntroductionElectrospun nanofiber membranes (ENMs) are a new generation of membranes that could offer a breakthrough in water and wastewater treatment by providing lighter, less expensive, and less energy consuming processes than the existing processes including conventional membranes. The major advantages of ENMs over their conventional counterparts are their higher porosity and surface-to-volume ratio. While these cutting edge membranes have widely been used in commercial air filtration [1][2][3], their applications in water and wastewater treatment have only been explored recently [4][5][6][7].

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Electrospun membrane of cellulose acetate for heavy metal ion adsorption in water treatment

Cited by 269 publications

References 27 publications

Removal of heavy metals and pollutants by membrane adsorption techniques

Removal of heavy metals and pollutants by membrane adsorption techniques

Adsorbents Based on Electrospun Nanofibers

Electrospun Nanofiber Membranes and Their Applications in Water and Wastewater Treatment

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