A novel route for the removal of Cu(II) and Ni(II) ions via homogeneous adsorption by chitosan solution

Kong, Aiqun; Ji, Yanhong; Ma, Hongwen; Song, Yunfei; He, Benqiao; Li, Jianxin

doi:10.1016/j.jclepro.2018.04.271

Cited by 104 publications

(22 citation statements)

References 36 publications

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“…1,000fold) over that of chitosan in its solid form reported for heterogeneous adsorption processes in aqueous solutions (Mohamed et al, 2015a). This was expected because the surface charge and accessibility of the active adsorption sites of chitosan are inferred to be greater for the solubilized form (Kong et al, 2018). In turn, the enhanced hydration effects and surface accessibility favor the kinetic and thermodynamic adsorption properties for the chitosan-NAFC system in homogeneous media.…”

Section: Sequestration Of Nafcsmentioning

confidence: 87%

Solubilized Chitosan Biopolymers for Sequestration of Organic Acids in Aquatic Environments after Biodegradation in a Constructed Wetland Treatment System

Mohamed¹,

Ajaero²,

McMartin³

et al. 2018

IJTech

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Pristine chitosan was dissolved in two different respective aqueous acids, namely acetic acid (AcA) and hydrochloric acid (HCl). The respective acid solutions were used as media to associate with naphthenic acid fraction compounds (NAFCs) from raw oil sands process water (R-OSPW) contaminants and constructed treatment wetland systems OSPW (CWTS-OSPW) samples. The results revealed selective removal of NAFCs and lyotropic effects due to variable counterion binding of chloride versus acetate with the ionized NAFCs (carboxylate species).

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Section: Sequestration Of Nafcsmentioning

confidence: 87%

Solubilized Chitosan Biopolymers for Sequestration of Organic Acids in Aquatic Environments after Biodegradation in a Constructed Wetland Treatment System

Mohamed¹,

Ajaero²,

McMartin³

et al. 2018

IJTech

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“…The presence of hydroxyl, amine, amide, and carboxyl functional group makes it an equally excellent adsorbent. An investigation on the removal of copper (II) ions by chitosan solution via homogenous adsorption resulted in adsorption capacity of 405 mg/g [85].…”

Section: Polymer-based Adsorbentsmentioning

confidence: 99%

Influence of Selective Conditions on Various Composite Sorbents for Enhanced Removal of Copper (II) Ions from Aqueous Environments

Adeeyo

Edokpayi

Bello

et al. 2019

IJERPH

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Numerous pollutants, including dyes, heavy metals, pesticides, and microorganisms, are found in wastewater and have great consequences when discharged onto natural freshwater sources. Heavy metals are predominantly reported in wastewater. Heavy metals are persistent, non-biodegradable and toxic, transforming from a less toxic form to more toxic forms in environmental media under favourable conditions. Among heavy metals, copper is dominantly found in wastewater effluent. In this review, the effects of high concentration of copper in plants and living tissues of both aquatic animals and humans are identified. The performance of different polymer adsorbents and the established optimum conditions to assess the resultant remediation effect as well as the amount of copper removed are presented. This procedure allows the establishment of a valid conclusion of reduced time and improved Cu (II) ion removal in association with recent nano-polymer adsorbents. Nano-polymer composites are therefore seen as good candidates for remediation of Cu ions while pH range 5–6 and room temperature were mostly reported for optimum performance. The optimum conditions reported can be applied for other metal remediation and development of potent novel adsorbents and process conditions.

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“…It has many environmentally friendly qualities and has high efficiency in water purification [13,14]. Chitosan is used for the removal of dyes and metals [15,16] as it has active adsorption sites like amino (-NH 2 ) and hydroxyl (-OH) functional groups and metals. However, it has some disadvantages for industrial applications [3], wastewater technologies, such as the too soft structure, which creates problems [17][18][19], its high solubility in the organic solvent, high swelling percent in water, low mechanical strength, and low surface area [20].…”

Section: Introductionmentioning

confidence: 99%

Chitosan biopolymer based nanocomposite hydrogels for removal of methylene blue dye

et al. 2020

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Nanocomposite hydrogels were synthesized by γ-radiation-induced copolymerization and crosslinking of Chitosan biopolymer (CS), acrylic acid (AAc) and TiO 2 nanoparticles (CS-PAAc/TiO 2). The structure, morphology, and properties of the nanocomposites were investigated using Fourier-transform infrared spectroscopy, X-Ray Diffraction, Scanning electron microscopy, Transmission electron microscopy, and thermogravimetric analysis techniques. The nanocomposites hydrogel was used for the removal of methylene blue dye (MB) from wastewater. It was found that the presence of TiO 2 in the copolymeric matrix enhances the adsorption by increasing the physical interaction between the dye molecules and the adsorbent surface. The removal percentage increases with the increase in pH of the medium of all investigated samples and the maximum value is obtained at the solution pH is 10. The maximum adsorbent dosage for CS-PAAc/ TiO 2 nanocomposites is 0.20 g and for CS-PAAc hydrogel is 0.15 g per liter of the adsorbate. This study revealed that the loading of TiO 2 nanoparticles into the polymeric matrix of CS-PAAc does a remarkable increase in the removal parentage of MB dye from its aqueous solution.

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A novel route for the removal of Cu(II) and Ni(II) ions via homogeneous adsorption by chitosan solution

Cited by 104 publications

References 36 publications

Solubilized Chitosan Biopolymers for Sequestration of Organic Acids in Aquatic Environments after Biodegradation in a Constructed Wetland Treatment System

Solubilized Chitosan Biopolymers for Sequestration of Organic Acids in Aquatic Environments after Biodegradation in a Constructed Wetland Treatment System

Influence of Selective Conditions on Various Composite Sorbents for Enhanced Removal of Copper (II) Ions from Aqueous Environments

Chitosan biopolymer based nanocomposite hydrogels for removal of methylene blue dye

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