Dual Responsive (pH and Magnetic) Nanocomposites Based on Fe3O4@Polyaniline/Itaconic Acid: Synthesis, Characterization and Removal of Toxic Hexavalent Chromium from Tannery Wastewater

Parthiban, E.; Kalaivasan, N.; Sudarsan, S.

doi:10.1007/s10904-020-01602-w

Cited by 25 publications

(8 citation statements)

References 40 publications

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“…In addition, more than 90% of Cr(VI) could be reduced to Cr(Ⅲ) by bacteria cell templated porous polyaniline in both acidic and neutral solutions [ 51 ]. Coating of PANI on sawdust [ 52 ], fibers [ 53 ], graphene oxide [ 54 ], and inorganic complexes [ 55 ], were also documented to enhance the removal of Cr(VI) by increasing the specific surface area [ 48 ], the treatment pH [ 56 ], hydrophilicity of adsorbents, and enhancing the reduction of Cr(VI) to Cr(III) [ 13 ]. It is worth noting that some PANI-based adsorbents showed excellent adsorption performance of Cr(VI) in neutral or nearly neutral solutions and real water.…”

Section: Polymers Used For Cr(vi) Removalmentioning

confidence: 99%

Advances in Sorptive Removal of Hexavalent Chromium (Cr(VI)) in Aqueous Solutions Using Polymeric Materials

Yuan

Luo

et al. 2023

Polymers

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Sorptive removal of hexavalent chromium (Cr(VI)) bears the advantages of simple operation and easy construction. Customized polymeric materials are the attracting adsorbents due to their selectivity, chemical and mechanical stabilities. The mostly investigated polymeric materials for removing Cr(VI) were reviewed in this work. Assembling of robust functional groups, reduction of self-aggregation, and enhancement of stability and mechanical strength, were the general strategies to improve the performance of polymeric adsorbents. The maximum adsorption capacities of these polymers toward Cr(VI) fitted by Langmuir isotherm model ranged from 3.2 to 1185 mg/g. Mechanisms of complexation, chelation, reduction, electrostatic attraction, anion exchange, and hydrogen bonding were involved in the Cr(VI) removal. Influence factors on Cr(VI) removal were itemized. Polymeric adsorbents performed much better in the strong acidic pH range (e.g., pH 2.0) and at higher initial Cr(VI) concentrations. The adsorption of Cr(VI) was an endothermic reaction, and higher reaction temperature favored more robust adsorption. Anions inhibited the removal of Cr(VI) through competitive adsorption, while that was barely affected by cations. Factors that affected the regeneration of these adsorbents were summarized. To realize the goal of industrial application and environmental protection, removal of the Cr(VI) accompanied by its detoxication through reduction is highly encouraged. Moreover, development of adsorbents with strong regeneration ability and low cost, which are robust for removing Cr(VI) at trace levels and a wider pH range, should also be an eternally immutable subject in the future. Work done will be helpful for developing more robust polymeric adsorbents and for promoting the treatment of Cr(VI)-containing wastewater.

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Section: Polymers Used For Cr(vi) Removalmentioning

confidence: 99%

Advances in Sorptive Removal of Hexavalent Chromium (Cr(VI)) in Aqueous Solutions Using Polymeric Materials

Yuan

Luo

et al. 2023

Polymers

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“…At last, the percentage of cation uptake (Uptake% = ((𝐶 0 − 𝐶 res. ) 𝐶 0 ⁄ ) × 100%) was calculated as the response of the design [22]. After analyzing the results, the optimum conditions were obtained.…”

Section: Batch Biosorption Experimentsmentioning

confidence: 99%

Design and Synthesis of Magnetic Immobilized Pineapple Cellulose/EDTA for Removal of Copper(II) and Zinc(II) by Coordination

Sayahi

Asadabadi

2022

Preprint

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In recent decades, treatment of polluted water has shifted towards the enhancement of environmentally friendly adsorbents. In this regard, a biosorbent originated from pineapple peel cellulose was synthesized and used for the adsorption of Cu2+ and Zn2+. The magnetic (3-aminopropyl)triethoxysilane was designated to immobilize modified cellulose and ethylenediaminetetraacetic acid. The biosorbent was characterized by FE-SEM, TEM, EDX, XRD, FT-IR, BET, VSM and TGA techniques. The influence of pH, temperature and biosorbent dosage on the cation removal was investigated by Central Composite Design. The maximum uptake% was 93.18 and 96.30% for Cu2+ and Zn2+, respectively. Coordination and electrostatic attraction were proposed as the main reasons for the removal of heavy metal cations. The adsorption of Zn2+ was ultrafast and completed within 40 s and it took 420 s for totally removal of Cu2+. External surface biosorption, the intra-particle diffusion and the diffusion through the smaller pores and slits, in sequence, were the dominant steps in the adsorption of each cation. Modified pseudo-n-order and modified Langmuir-Freundlich were the best models to describe kinetics and equilibrium results. The maximum adsorption capacity of biosorbent for Zn2+ was higher than one for Cu2+ (153.9 versus 149.4 mg·g-1). The regenerating of biosorbent was successfully accomplished for five cycles using a solution of EDTA in the presence of ultrasonic waves.

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“…At last, the percentage of cation uptake (Uptake% = ((𝐶 0 − 𝐶 res. ) 𝐶 0 ⁄ ) × 100%) was calculated as the response of the design (Parthiban et al 2020). After analyzing the results, the optimum conditions were obtained.…”

Section: Batch Biosorption Experimentsmentioning

confidence: 99%

Anchoring carboxylated pineapple peel cellulose and EDTA onto magnetic (3-aminopropyl)triethoxysilane to effective diminish copper(II) and zinc(II) from polluted water

Sayahi

Asadabadi

2022

Preprint

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In recent decades, remediation of polluted water has shifted towards the enhancement of environmentally friendly adsorbents with robust stability. In this regard, a biosorbent was designed and synthesized by anchoring carboxylated pineapple peel cellulose and ethylenediaminetetraacetic acid onto amino-silane modified Fe3O4 nanoparticles. A vast number of carboxyl and amino active groups in the structure of biosorbent led to the efficient adsorption of Cu2+ and Zn2+ from polluted water. The biosorbent was characterized by FE-SEM, TEM, EDX, XRD, FT-IR, BET, VSM and TGA techniques. The influence of pH, temperature and biosorbent dosage on the cation removal was investigated by Central Composite Design. The maximum uptake% was 93.18 and 96.30% for Cu2+ and Zn2+, respectively. Coordination and electrostatic attraction were proposed as the main reasons for the removal of heavy metal cations. Astonishingly, the adsorption of Zn2+ was ultrafast and completed within 40 s and it took 420 s for removal of Cu2+. External surface biosorption, the intra-particle diffusion and the diffusion through the smaller pores and slits, in sequence, were the dominant steps in the adsorption of each cation. Modified pseudo-n-order and modified Langmuir-Freundlich were the best models to describe kinetics and equilibrium results. The maximum adsorption capacity of biosorbent for Zn2+ was higher than one for Cu2+ (153.9 versus 149.4 mg·g-1). Besides, the regenerating of biosorbent was successfully accomplished for five cycles using a solution of EDTA in the presence of ultrasonic waves.

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Dual Responsive (pH and Magnetic) Nanocomposites Based on Fe3O4@Polyaniline/Itaconic Acid: Synthesis, Characterization and Removal of Toxic Hexavalent Chromium from Tannery Wastewater

Cited by 25 publications

References 40 publications

Advances in Sorptive Removal of Hexavalent Chromium (Cr(VI)) in Aqueous Solutions Using Polymeric Materials

Advances in Sorptive Removal of Hexavalent Chromium (Cr(VI)) in Aqueous Solutions Using Polymeric Materials

Design and Synthesis of Magnetic Immobilized Pineapple Cellulose/EDTA for Removal of Copper(II) and Zinc(II) by Coordination

Anchoring carboxylated pineapple peel cellulose and EDTA onto magnetic (3-aminopropyl)triethoxysilane to effective diminish copper(II) and zinc(II) from polluted water

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