Insight of chitosan-based nanocomposite for removal of hexavalent chromium from wastewater- a review

Rimu, Sunzida H.; Rahman, Mohammed Mizanur

doi:10.1080/03067319.2020.1817426

Cited by 22 publications

(7 citation statements)

References 145 publications

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“…The hydroxyl and amino groups in its chain give it chromatographic uses. The chemical and physical features of chitosan can be enhanced by injecting other substances [42].…”

Section: Properties Of Chitosan-based Carbon Nanomaterialsmentioning

confidence: 99%

Retracted: Advances in chitosan biopolymer composite materials: from bioengineering, wastewater treatment to agricultural applications

Chadha

Bhardwaj

Selvaraj

et al. 2022

Mater. Res. Express

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Chitosan has become the most known and second abundantly available recyclable, non-hazardous and eco-friendly biopolymer after cellulose with several advantageous biomedical, agriculture, and wastewater treatment applications. As nanotechnology has progressed, researchers have begun incorporating chitosan-based carbon compounds into various compounds, elements, and carbonaceous materials to increase their efficiency and biocompatibility. Chitosan carbon compounds have also been used directly in many applications due to their inherent chelating and antibacterial features and the presence of customizable functional groups. In this review, synthesis technologies and microstructure of chitosan composites and its carbon materials in biomedical, agriculture, and wastewater treatment concerning the administration of abiotic stress within plants, water accessibility for crops, scheming food bear pathogens, photothermal cancer rehabilitation, and heavy water pollutants absorption and removal methods are widely deliberated upon, with a relevant discussion of the techniques that can be used to put these into action. Chitosan is also utilized in miscellaneous applications, including the food sector and cosmetics. Overall, chitosan-based carbon compounds promise to extend agricultural practices while also addressing health concerns in an environmentally friendly manner.

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“…The hydroxyl and amino groups in its chain give it chromatographic uses. The chemical and physical features of chitosan can be enhanced by injecting other substances [42].…”

Section: Properties Of Chitosan-based Carbon Nanomaterialsmentioning

confidence: 99%

Retracted: Advances in chitosan biopolymer composite materials: from bioengineering, wastewater treatment to agricultural applications

Chadha

Bhardwaj

Selvaraj

et al. 2022

Mater. Res. Express

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“…Due to severe health effects of Cr(VI), it is essential to treat water and wastewater containing Cr(VI) ions before release into the environment or modify it into less toxic forms. A variety of well-established methods are available namely chemical precipitation (Tumolo et al 2020;Mdlalose et al 2021), electrochemical (Dinker and Kulkarni 2015), ion exchange resin (Mahmud et al 2015), coagulation-flocculation , reverse-osmosis (Dinker and Kulkarni 2015; Aigbe & Osibote 2020), membrane filtration (Maleh et al 2020;Mdlalose et al 2021), electrocoagulation (Rimu & Rahman 2020), bioremediation (Maleh et al 2020), electrokinetics (Dinker and Kulkarni 2015), reduction ) and adsorption (Muhammad & Bilal 2020). Figure 2 gives a summary these methods for removing Cr(VI) ions from water.…”

Section: Methods Of Removing Cr(vi) Ions From Watermentioning

confidence: 99%

Polypyrrole-based adsorbents for Cr(VI) ions remediation from aqueous solution: a review

Chigondo¹,

Nyamunda²,

Maposa³

et al. 2022

Water Science and Technology

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Anthropogenic activities are principally responsible for the manifestation of toxic and carcinogenic hexavalent chromium (Cr(VI)) triggering water pollution that threaten the environment and human health. The World Health Organisation (WHO) restricts Cr(VI) ions concentration to 0.1 and 0.05 mg/L in inland surface water and drinking water, respectively. The available technologies for Cr(VI) ions removal from water were highlighted with emphasis on adsorption technology. Furthermore, the characteristics of several polypyrrole-based adsorbents were scrutinized including amino containing compounds, biosorbents, graphene/graphene oxide, clay materials and many other additives with reported effective Cr(VI) ions uptake. This efficiency in Cr(VI) ions adsorption is attributed to enhanced redox properties, increased number of functional groups and well as synergistic behaviour of the materials making up the composite. The Langmuir isotherm best described the adsorption processes with maximum adsorption capacities ranging from 3.40–961.50 mg/g. The regeneration of Cr(VI) ions laden adsorbents was studied. Ion exchange, electrostatic attractions, complexation, chelation reactions with protonated sites and the reduction were the mechanisms of adsorption. Nevertheless, there are limited details on comprehensive adsorbent regeneration studies to prolong robustness in adsorption-desorption cycles and utilization of the Cr(VI) ions laden adsorbent in other areas of research to limit the threat of secondary pollution.

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“…Recently, several review papers on removing Cr(VI) from water and wastewaters by adsorption process have been published [23][24][25]. Most of the reviews focused only one specifi c type of adsorbents such as carbon nanotubes [26], activated carbon derived from biomass [27], carbonaceous nanomaterials [28],microporous polymers [29], silica-based materials [30], chitosanbased nanocomposite [31], magnetic iron oxides [32], nanoparticle-based adsorbent [33,34], polyaniline-based materials [35], metal-organic framework (MOF)derivatives and their composites [36], and natural minerals [37]. This study off ers a signifi cant and thorough review on removing Cr(VI) from water by using biomass-based waste materials (BMWs) as adsorbents, especially those that have emerged in recent years.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Biomass-Based Waste Materials for the Removal of Chromium (VI) from Wastewater: A Review

et al. 2021

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Hexavalent chromium (Cr(VI)) is a critical pollutant with high toxicity, even at trace concentrations. Cr(VI) is possibly carcinogenic and mutagenic and can produce serious health issues. Hence, it is necessary to remove Cr(VI) from the water before releasing it into the environment. Currently, numerous removal techniques were used. Adsorption is the best method compared to others because it is simple, cheap, highly efficient, and can be used in water having trace concentrations of contaminants. Biomass-based waste materials (BMWs) are found as far better adsorbents than commercially and other available adsorbents. In this study, the existing Cr(VI) removal techniques are reviewed and, a broad range of current research studies of Cr(VI) removal from water by using BMWs are evaluated. This review can be helpful to develop a more efficient, cheap, reliable, and environmentally benign bio-adsorbent. It is obvious after the literature review given herein that BMWs exhibited potential adsorbents for the removal of Cr(VI). Also, the chemically modified adsorbents exhibited a higher adsorption capacity than unmodified adsorbents.

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Insight of chitosan-based nanocomposite for removal of hexavalent chromium from wastewater- a review

Cited by 22 publications

References 145 publications

Retracted: Advances in chitosan biopolymer composite materials: from bioengineering, wastewater treatment to agricultural applications

Retracted: Advances in chitosan biopolymer composite materials: from bioengineering, wastewater treatment to agricultural applications

Polypyrrole-based adsorbents for Cr(VI) ions remediation from aqueous solution: a review

Recent Advances in Biomass-Based Waste Materials for the Removal of Chromium (VI) from Wastewater: A Review

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