Phosphonium-enhanced chitosan for Cr(VI) adsorption in wastewater treatment

Sessarego, Sebastian; Rodrigues, Simone C.Gallani; Xiao, Ye; Lu, Qingye; Hill, Josephine M.

doi:10.1016/j.carbpol.2019.02.003

Cited by 110 publications

(32 citation statements)

References 35 publications

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“…Water pollution has become a global issue because of its increasing impact on human and animal health. The presence of heavy metals in industrial water is not only causing severe damage to human and animal health, but it is also damaging aquatic life [1][2][3]. The effluents from a variety of industrial processes such as metallurgy, petroleum refining, batteries, and electroplating are responsible for introducing these heavy metals into aquatic environments [4,5].…”

Section: Introductionmentioning

confidence: 99%

Activated Carbon Microsphere from Sodium Lignosulfonate for Cr(VI) Adsorption Evaluation in Wastewater Treatment

Yang

Xing

et al. 2020

Polymers

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In this study, activated carbon microsphere (SLACM) was prepared from powdered sodium lignosulfonate (SL) and polystyrene by the Mannich reaction and ZnCl2 activation, which can be used to remove Cr(VI) from the aqueous solution without adding any binder. The SLACM was characterized and the batch experiments were conducted under different initial pH values, initial concentrations, contact time durations and temperatures to investigate the adsorption performance of Cr(VI) onto SLACM. The results indicated that the SLACM surface area and average pore size were 769.37 m2/g and 2.46 nm (the mesoporous material), respectively. It was found that the reduced initial pH value, the increased temperature and initial Cr(VI) concentration were beneficial to Cr(VI) adsorption. The maximum adsorption capacity of Cr(VI) on SLACM was 227.7 mg/g at an initial pH value of 2 and the temperature of 40 °C. The adsorption of SLACM for Cr(VI) mainly occurred during the initial stages of the adsorption process. The adsorption kinetic and isotherm experimental data were thoroughly described by Elovich and Langmuir models, respectively. SL could be considered as a potential raw material for the production of activated carbon, which had a considerable potential for the Cr(VI) removal from wastewater.

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Section: Introductionmentioning

confidence: 99%

Activated Carbon Microsphere from Sodium Lignosulfonate for Cr(VI) Adsorption Evaluation in Wastewater Treatment

Yang

Xing

et al. 2020

Polymers

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“…Mainly, the modications of chitosan can be by physical methods (changing from akes to beads), or chemical methods where cross-linking or graing functional groups is carried out. 21,59,[104][105][106] Recently, more composite materials incorporating chitosan backbone have been reported. 60,61 Preethi et al 15 synthesized biopolymers assisted oxyhydroxide materials, aluminum-lanthanum mixed oxyhydroxide (ALMOH) and chitosan/aluminum-lanthanum mixed oxyhydroxide (CSALMOH), and evaluated them for Cr(VI) removal.…”

Section: àmentioning

confidence: 99%

Recent advances in hexavalent chromium removal from aqueous solutions by adsorptive methods

2019

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“…Compared with other treatment technologies, adsorption separation technology has been widely used in waste water treatment because of its rich adsorbent resources, simple process and low cost. Therefore, the adsorption separation method is the most active research and application in recent years to remove toxic pollutants in sewage treatment methods [27][28][29][30][31] . It is well known that the adsorbent material is very important in the adsorption separation technology, but the existing adsorbent material still needs to be further improved, especially how to realize the fast separation and improve the adsorption performance of the material.…”

Section: Introductionmentioning

confidence: 99%

Constructing Carbon-Coated Fe3O4 Hierarchical Microstructures with a Porous Structure and their Excellent Cr(VI) Ion Removal Properties

Cheng

Song

et al. 2021

Preprint

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Here, a facile solvothermal method coupled with an annealing strategy is developed to synthesize Fe3O4/carbon (Fe3O4@C) magnetic composite microstructures with different morphologies, including flower-like, hollow spheres and egg-like. Owing to the unique multi-porous and hollow structure, the as-prepared hierarchical Fe3O4@C hollow microspheres composite exhibit appealing performance as an absorbent of Cr(VI) ions in aqueous solution, delivering a high capacity of ca.197.2mg/g. Furthermore, the magnetic Fe3O4 ‘‘core’’ in composite hierarchical microstructures makes them easy to separate from aqueous systems by magnetic separation, the layer of carbon effectively prevents agglomerations of magnetic nanoparticles and expands their range of applications. The excellent Cr(VI) ions adsorbent activities of the Fe3O4@C magnetic composite microstructures would have a potential adsorbing material application in environmental purification.

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Phosphonium-enhanced chitosan for Cr(VI) adsorption in wastewater treatment

Cited by 110 publications

References 35 publications

Activated Carbon Microsphere from Sodium Lignosulfonate for Cr(VI) Adsorption Evaluation in Wastewater Treatment

Activated Carbon Microsphere from Sodium Lignosulfonate for Cr(VI) Adsorption Evaluation in Wastewater Treatment

Recent advances in hexavalent chromium removal from aqueous solutions by adsorptive methods

Constructing Carbon-Coated Fe3O4 Hierarchical Microstructures with a Porous Structure and their Excellent Cr(VI) Ion Removal Properties

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Phosphonium-enhanced chitosan for Cr(VI) adsorption in wastewater treatment

Cited by 110 publications

References 35 publications

Activated Carbon Microsphere from Sodium Lignosulfonate for Cr(VI) Adsorption Evaluation in Wastewater Treatment

Activated Carbon Microsphere from Sodium Lignosulfonate for Cr(VI) Adsorption Evaluation in Wastewater Treatment

Recent advances in hexavalent chromium removal from aqueous solutions by adsorptive methods

Constructing Carbon-Coated Fe3O4&nbsp;Hierarchical&nbsp;Microstructures with a Porous Structure and their Excellent Cr(VI) Ion Removal&nbsp;Properties

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Constructing Carbon-Coated Fe3O4 Hierarchical Microstructures with a Porous Structure and their Excellent Cr(VI) Ion Removal Properties