Chitosan nanocomposites for water treatment by fixed-bed continuous flow column adsorption: A review

Taka, Anny Leudjo; Klink, Michael J.; Mbianda, Xavier Yangkou; Naidoo, Eliazer Bobby

doi:10.1016/j.carbpol.2020.117398

Cited by 65 publications

(23 citation statements)

References 118 publications

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“…Simple and cost-effective water filtration technologies based on recyclable biobased natural polymers such as chitosan, cellulose, and carbohydrate polymer modified with nanoparticles are needed [94]. These novel chitosan-based nanomaterials have been shown to effectively remove a range of pollutants from wastewater to permissible levels [95]. Other biobased polymer and polymeric support includes porous resins, polyaniline, polyacrylamides, cellulose acetate, cellulose or carboxymethyl cellulose, chitosan, alginate, eggshells, nanofibers and cellulose nanofillers (CNFs) [19,96].…”

Section: Polymeric Membrane and Biopolymersmentioning

confidence: 99%

Advanced Polymeric Nanocomposites for Water Treatment Applications: A Holistic Perspective

Adeola

Nomngongo

2022

Polymers

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Water pollution remains one of the greatest challenges in the modern era, and water treatment strategies have continually been improved to meet the increasing demand for safe water. In the last few decades, tremendous research has been carried out toward developing selective and efficient polymeric adsorbents and membranes. However, developing non-toxic, biocompatible, cost-effective, and efficient polymeric nanocomposites is still being explored. In polymer nanocomposites, nanofillers and/or nanoparticles are dispersed in polymeric matrices such as dendrimer, cellulose, resins, etc., to improve their mechanical, thermophysical, and physicochemical properties. Several techniques can be used to develop polymer nanocomposites, and the most prevalent methods include mixing, melt-mixing, in-situ polymerization, electrospinning, and selective laser sintering techniques. Emerging technologies for polymer nanocomposite development include selective laser sintering and microwave-assisted techniques, proffering solutions to aggregation challenges and other morphological defects. Available and emerging techniques aim to produce efficient, durable, and cost-effective polymer nanocomposites with uniform dispersion and minimal defects. Polymer nanocomposites are utilized as filtering membranes and adsorbents to remove chemical contaminants from aqueous media. This study covers the synthesis and usage of various polymeric nanocomposites in water treatment, as well as the major criteria that influence their performance, and highlights challenges and considerations for future research.

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Section: Polymeric Membrane and Biopolymersmentioning

confidence: 99%

Advanced Polymeric Nanocomposites for Water Treatment Applications: A Holistic Perspective

Adeola

Nomngongo

2022

Polymers

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“…Nos últimos anos, diversos estudos têm sido direcionados para o uso de biopolímeros (ex. : celulose 184 e quitosana 185 ) devido à elevada disponibilidade, não toxicidade, biodegradabilidade e versatilidade em termos de processamento.…”

Section: Aplicações No Tratamento De áGuaunclassified

Nanocompósitos Poliméricos

Martins¹,

Migliorini²,

Teodoro³

et al. 2022

Nanotecnologia Aplicada a Polímeros

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A busca por materiais com propriedades otimizadas para aplicações em áreas diversas como engenharia, medicina, indústria automobilística e aeroespacial tem levado à utilização em larga escala de materiais compósitos. Esses são produzidos pela combinação de dois ou mais materiais com propriedades físicas e/ou químicas distintas entre si, resultando em um material final multifásico com características intermediárias das fases constituintes e desempenho final superior, devido à combinação otimizada de propriedades. [1][2][3] Os materiais compósitos podem ser baseados em matrizes poliméricas (compósitos poliméricos), 4 matrizes cerâmicas (compósitos cerâmicos) 5 ou ainda matrizes metálicas (compósitos metálicos). 6 Dentre esses, os compósitos poliméricos são amplamente utilizados em diversas aplicações, pois os polímeros, atuando como matriz, oferecem vantagens sobre outros materiais, proporcionando propriedades otimizadas. 3,4

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“…They have a high number of surface active sites, are earth-abundant, have minimal surface defects, and are metal-free. These green properties of chitosan-based polymer nanocomposites make them efficient nano sorbent materials for the environment [ 31 , 32 , 33 , 34 ]. Such biopolymer-based nanocomposites have emerged as a promising adsorption material for the uptake of mercury from wastewater and the atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Chitosan-Based Polymer Nanocomposites for Environmental Remediation of Mercury Pollution

et al. 2023

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Mercury is a well-known heavy metal pollutant of global importance, typically found in effluents (lakes, oceans, and sewage) and released into the atmosphere. It is highly toxic to humans, animals and plants. Therefore, the current challenge is to develop efficient materials and techniques that can be used to remediate mercury pollution in water and the atmosphere, even in low concentrations. The paper aims to review the chitosan-based polymer nanocomposite materials that have been used for the environmental remediation of mercury pollution since they possess multifunctional properties, beneficial for the adsorption of various kinds of pollutants from wastewater and the atmosphere. In addition, these chitosan-based polymer nanocomposites are made of non-toxic materials that are environmentally friendly, highly porous, biocompatible, biodegradable, and recyclable; they have a high number of surface active sites, are earth-abundant, have minimal surface defects, and are metal-free. Advances in the modification of the chitosan, mainly with nanomaterials such as multi-walled carbon nanotube and nanoparticles (Ag, TiO2, S, and ZnO), and its use for mercury uptake by batch adsorption and passive sampler methods are discussed.

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Chitosan nanocomposites for water treatment by fixed-bed continuous flow column adsorption: A review

Cited by 65 publications

References 118 publications

Advanced Polymeric Nanocomposites for Water Treatment Applications: A Holistic Perspective

Advanced Polymeric Nanocomposites for Water Treatment Applications: A Holistic Perspective

Nanocompósitos Poliméricos

Chitosan-Based Polymer Nanocomposites for Environmental Remediation of Mercury Pollution

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