Upcycling tea waste particles into magnetic adsorbent materials for removal of Cr(VI) from aqueous solutions

Chemistry

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https://doi.org/10.1016/j.partic.2022.11.017
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Upcycling tea waste particles into magnetic adsorbent materials for removal of Cr(VI) from aqueous solutions. / Wu, J.; Annath, H.; Chen, H. et al.
In: Particuology, Vol. 80, 30.09.2023, p. 115-126.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{bb0cf97d36a447eea68b7e0bf086804f,

title = "Upcycling tea waste particles into magnetic adsorbent materials for removal of Cr(VI) from aqueous solutions",

abstract = "In this work, locally available tea wastes were used as precursors for the development of cost-effective bio-sorbent materials for heavy metal removal from wastewater. Chemical and thermal treatments to prepare magnetic/non-magnetic tea waste-based adsorbents were discussed and correlated their properties with corresponding Cr(VI) adsorption capacity. These bio-sorbents were thoroughly characterized by FT-IR, PXRD, N2 adsorption-desorption surface area techniques and Cr adsorption performance was investigated in batch reactor under different conditions such as adsorbent dosage, initial Cr concentration, solution pH and contact time. Careful bleaching steps, incorporation of magnetic iron nanoparticles and judicious temperature treatments of tea wastes resulted in high performing biosorbents with a complete removal of Cr at a dosage of 0.25 g/mL of the solution. Cr adsorption on these tea waste-based bio-sorbents were found to be fitting to a pseudo 2nd order kinetics.",

keywords = "Adsorption kinetics, Biosorption, Bleached-tea waste, Chromium, Magnetic-tea waste, Pyrolysis, Batch reactors, Bleaching, Chemicals removal (water treatment), Chromium compounds, Cleaning, Cost effectiveness, Heavy metals, Adsorbent materials, Cost effective, Cr adsorptions, Magnetic adsorbents, Sorbent materials, Tea wastes, Adsorption",

author = "J. Wu and H. Annath and H. Chen and C. Mangwandi",

year = "2023",

month = sep,

day = "30",

doi = "10.1016/j.partic.2022.11.017",

language = "English",

volume = "80",

pages = "115--126",

journal = "Particuology",

issn = "1674-2001",

publisher = "Elsevier Science B.V.",

}

RIS

TY - JOUR

T1 - Upcycling tea waste particles into magnetic adsorbent materials for removal of Cr(VI) from aqueous solutions

AU - Wu, J.

AU - Annath, H.

AU - Chen, H.

AU - Mangwandi, C.

PY - 2023/9/30

Y1 - 2023/9/30

N2 - In this work, locally available tea wastes were used as precursors for the development of cost-effective bio-sorbent materials for heavy metal removal from wastewater. Chemical and thermal treatments to prepare magnetic/non-magnetic tea waste-based adsorbents were discussed and correlated their properties with corresponding Cr(VI) adsorption capacity. These bio-sorbents were thoroughly characterized by FT-IR, PXRD, N2 adsorption-desorption surface area techniques and Cr adsorption performance was investigated in batch reactor under different conditions such as adsorbent dosage, initial Cr concentration, solution pH and contact time. Careful bleaching steps, incorporation of magnetic iron nanoparticles and judicious temperature treatments of tea wastes resulted in high performing biosorbents with a complete removal of Cr at a dosage of 0.25 g/mL of the solution. Cr adsorption on these tea waste-based bio-sorbents were found to be fitting to a pseudo 2nd order kinetics.

AB - In this work, locally available tea wastes were used as precursors for the development of cost-effective bio-sorbent materials for heavy metal removal from wastewater. Chemical and thermal treatments to prepare magnetic/non-magnetic tea waste-based adsorbents were discussed and correlated their properties with corresponding Cr(VI) adsorption capacity. These bio-sorbents were thoroughly characterized by FT-IR, PXRD, N2 adsorption-desorption surface area techniques and Cr adsorption performance was investigated in batch reactor under different conditions such as adsorbent dosage, initial Cr concentration, solution pH and contact time. Careful bleaching steps, incorporation of magnetic iron nanoparticles and judicious temperature treatments of tea wastes resulted in high performing biosorbents with a complete removal of Cr at a dosage of 0.25 g/mL of the solution. Cr adsorption on these tea waste-based bio-sorbents were found to be fitting to a pseudo 2nd order kinetics.

KW - Adsorption kinetics

KW - Biosorption

KW - Bleached-tea waste

KW - Chromium

KW - Magnetic-tea waste

KW - Pyrolysis

KW - Batch reactors

KW - Bleaching

KW - Chemicals removal (water treatment)

KW - Chromium compounds

KW - Cleaning

KW - Cost effectiveness

KW - Heavy metals

KW - Adsorbent materials

KW - Cost effective

KW - Cr adsorptions

KW - Magnetic adsorbents

KW - Sorbent materials

KW - Tea wastes

KW - Adsorption

U2 - 10.1016/j.partic.2022.11.017

DO - 10.1016/j.partic.2022.11.017

M3 - Journal article

VL - 80

SP - 115

EP - 126

JO - Particuology

JF - Particuology

SN - 1674-2001

ER -

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