Design of a paulownia-biochar/MoS<sub>2</sub> composite electrode material for efficient electrosorption removal of Cr(<scp>vi</scp>) from wastewater

Ni, Yushan; Zhang, Jie; You, Dongjiang

doi:10.1039/d2nj04310f

Cited by 3 publications

(1 citation statement)

References 25 publications

(32 reference statements)

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“…Such adsorbents deliver the dual purpose of waste management and environmental remediation in addition to addressing the green-chemistry principles. In this perspective, several adsorbents have been fabricated which exhibit effective remediation potential for heavy metals, anions, organic pollutants, and microbes [5][6][7]. The materials like Coal fly ash modified hydroxyapatite, iron doped Ethiopian nano clay, Hydrocalcite/hydroxyapatite impregnated carbon nanotubes, magnetic nanoparticles modified chitosan incorporated biochar, iron nanoparticles impregnated tea waste, magnetic nanoparticles decorated tea waste biochar, etc.…”

Section: Introductionmentioning

confidence: 99%

Biochar supported metallo-inorganic nanocomposite: A green approach for decontamination of heavy metals from water

Khalid,

Chaudhary,

Nazir

et al. 2023

PLoS ONE

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Heavy metal contamination of water has become a global environmental burden, which has stirred up agitation worldwide. Fabrication of adsorbents utilizing either low cost, environment friendly materials or waste products can be helpful in remediating environmental pollution. The current study evolved around the synthesis of nanocomposites derived from such raw precursors like spent tea waste biochar, hydroxyapatite, and clays. In this context, two nanocomposites, namely manganese ferrite doped hydroxyapatite/kaolinite/biochar (TK-NC) and manganese ferrite doped hydroxyapatite/vermiculite/biochar (TV-NC), were synthesized followed by their employment for decontamination of heavy metals from aqueous media. TK-NC and TV-NC exhibited the crystallite sizes in the range of 2.55–5.94 nm as obtained by Debye Scherrer Equation and Williamsons–Hall equation The fabricated nanocomposites were characterized using FT-IR, SEM-EDX, and powder XRD. Batch adsorption studies were performed, and influence of different adsorption parameters (contact time, reaction temperature, solution pH, adsorbent dose, and initial adsorbate concentration) on metal adsorption was examined. Thermodynamic studies revealed that the adsorption of Cr(VI), Ni(II) and Cu(II) on TK-NC and TV-NC was endothermic (+ΔH°) and indicates disorderness (+ΔS°) at the solid-liquid interface owing to the strong affinity of metal ions with adsorbent. The heavy metal uptake selectivity followed the following decreasing order; Cr(VI) > Cu(II) > Ni(II) by both nanocomposites, with adsorption capacities falling in the range of 204.68–343.05 mg g-1. Several adsorption kinetic and isotherm models were applied to experimentally calculated data, which suggest favorable adsorption of Cr(VI), Ni(II) and Cu(II) by TK-NC and TV-NC from the system while obeying general-order kinetics and R-P adsorption model, conferring the transition in adsorption kinetics order and involvement of multiple adsorption process.

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Section: Introductionmentioning

confidence: 99%

Biochar supported metallo-inorganic nanocomposite: A green approach for decontamination of heavy metals from water

Khalid,

Chaudhary,

Nazir

et al. 2023

PLoS ONE

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Advancing in wastewater treatment using sustainable electrosorbents

Fdez-Sanromán,

Pazos,

Rosales

et al. 2024

Current Opinion in Electrochemistry

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Development of biochar electrode materials for capacitive deionization: preparation, performance, regeneration and other challenges

Zeng,

Yan,

et al. 2023

New Carbon Materials

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Design of a paulownia-biochar/MoS₂ composite electrode material for efficient electrosorption removal of Cr(vi) from wastewater

Abstract: Cr (VI) in wastewater poses a serious threat to human health, so there is an urgent need to remove it using a cost-effective way. Herein, we report a composite electrode...

Cited by 3 publications

References 25 publications

Biochar supported metallo-inorganic nanocomposite: A green approach for decontamination of heavy metals from water

Biochar supported metallo-inorganic nanocomposite: A green approach for decontamination of heavy metals from water

Advancing in wastewater treatment using sustainable electrosorbents

Development of biochar electrode materials for capacitive deionization: preparation, performance, regeneration and other challenges

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Design of a paulownia-biochar/MoS2 composite electrode material for efficient electrosorption removal of Cr(vi) from wastewater

Abstract: Cr (VI) in wastewater poses a serious threat to human health, so there is an urgent need to remove it using a cost-effective way. Herein, we report a composite electrode...

Cited by 3 publications

References 25 publications

Biochar supported metallo-inorganic nanocomposite: A green approach for decontamination of heavy metals from water

Biochar supported metallo-inorganic nanocomposite: A green approach for decontamination of heavy metals from water

Advancing in wastewater treatment using sustainable electrosorbents

Development of biochar electrode materials for capacitive deionization: preparation, performance, regeneration and other challenges

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Product

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Design of a paulownia-biochar/MoS₂ composite electrode material for efficient electrosorption removal of Cr(vi) from wastewater