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Probing the efficiency of magnetically modified biomass-derived biochar for effective phosphate removal

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Probing the efficiency of magnetically modified biomass-derived biochar for effective phosphate removal. / Ajmal, Zeeshan; Muhmood, Atif; Dong, Renjie; Wu, Shubiao.

In: Journal of Environmental Management, Vol. 253, 109730, 01.2020.

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Ajmal, Zeeshan ; Muhmood, Atif ; Dong, Renjie ; Wu, Shubiao. / Probing the efficiency of magnetically modified biomass-derived biochar for effective phosphate removal. In: Journal of Environmental Management. 2020 ; Vol. 253.

Bibtex

@article{c0b34b160cdd484eb498eb123a939994,
title = "Probing the efficiency of magnetically modified biomass-derived biochar for effective phosphate removal",
abstract = "Characterization of the driving forces for effective and economical phosphate (PO4 3−) removal from wastewater by using magnetically modified biochar was performed in this study. The biochar produced from slow pyrolysis of local agricultural biomass (wood and rice husks) were magnetically modified by co-precipitation of Fe(II) and Fe(III) ions in their presence. The surface characteristics before and after modification and their efficacy for PO4 3− sorption, and desorption were compared. Results show that, even though magnetic biochar surface modification slightly decreased their surface area, PO4 3− adsorption to the modified biochars was almost double (25–28 mg g−1) than that to the raw biochar (12–15 mg g−1). The adsorption isotherm of raw biochars was better simulated via the Langmuir model, while that of modified biochars was better fitted to the Freundlich model. Moreover, the integrated analysis by XRD, EDX, and FTIR show that PO4 3− sorption to modified biochars could be attributed to the simultaneously-occurring electrostatic attraction, surface precipitation, and ligand exchange. While the electrostatic attraction was dominant in the presence of unmodified biochars. The regenerated modified biochars retained substantial PO4 3− adsorption capacity up to several regeneration cycles. Their high reusability potential leads to the effective and economical phosphate recovery and thus modified biochars could offer a viable strategy for PO4 3− removal.",
keywords = "Adsorption kinetics, Economical evaluation, Engineered biochar, Phosphate removal, Regeneration",
author = "Zeeshan Ajmal and Atif Muhmood and Renjie Dong and Shubiao Wu",
year = "2020",
month = jan,
doi = "10.1016/j.jenvman.2019.109730",
language = "English",
volume = "253",
journal = "Journal of Environmental Management",
issn = "0301-4797",
publisher = "Academic Press",

}

RIS

TY - JOUR

T1 - Probing the efficiency of magnetically modified biomass-derived biochar for effective phosphate removal

AU - Ajmal, Zeeshan

AU - Muhmood, Atif

AU - Dong, Renjie

AU - Wu, Shubiao

PY - 2020/1

Y1 - 2020/1

N2 - Characterization of the driving forces for effective and economical phosphate (PO4 3−) removal from wastewater by using magnetically modified biochar was performed in this study. The biochar produced from slow pyrolysis of local agricultural biomass (wood and rice husks) were magnetically modified by co-precipitation of Fe(II) and Fe(III) ions in their presence. The surface characteristics before and after modification and their efficacy for PO4 3− sorption, and desorption were compared. Results show that, even though magnetic biochar surface modification slightly decreased their surface area, PO4 3− adsorption to the modified biochars was almost double (25–28 mg g−1) than that to the raw biochar (12–15 mg g−1). The adsorption isotherm of raw biochars was better simulated via the Langmuir model, while that of modified biochars was better fitted to the Freundlich model. Moreover, the integrated analysis by XRD, EDX, and FTIR show that PO4 3− sorption to modified biochars could be attributed to the simultaneously-occurring electrostatic attraction, surface precipitation, and ligand exchange. While the electrostatic attraction was dominant in the presence of unmodified biochars. The regenerated modified biochars retained substantial PO4 3− adsorption capacity up to several regeneration cycles. Their high reusability potential leads to the effective and economical phosphate recovery and thus modified biochars could offer a viable strategy for PO4 3− removal.

AB - Characterization of the driving forces for effective and economical phosphate (PO4 3−) removal from wastewater by using magnetically modified biochar was performed in this study. The biochar produced from slow pyrolysis of local agricultural biomass (wood and rice husks) were magnetically modified by co-precipitation of Fe(II) and Fe(III) ions in their presence. The surface characteristics before and after modification and their efficacy for PO4 3− sorption, and desorption were compared. Results show that, even though magnetic biochar surface modification slightly decreased their surface area, PO4 3− adsorption to the modified biochars was almost double (25–28 mg g−1) than that to the raw biochar (12–15 mg g−1). The adsorption isotherm of raw biochars was better simulated via the Langmuir model, while that of modified biochars was better fitted to the Freundlich model. Moreover, the integrated analysis by XRD, EDX, and FTIR show that PO4 3− sorption to modified biochars could be attributed to the simultaneously-occurring electrostatic attraction, surface precipitation, and ligand exchange. While the electrostatic attraction was dominant in the presence of unmodified biochars. The regenerated modified biochars retained substantial PO4 3− adsorption capacity up to several regeneration cycles. Their high reusability potential leads to the effective and economical phosphate recovery and thus modified biochars could offer a viable strategy for PO4 3− removal.

KW - Adsorption kinetics

KW - Economical evaluation

KW - Engineered biochar

KW - Phosphate removal

KW - Regeneration

UR - http://www.scopus.com/inward/record.url?scp=85073696119&partnerID=8YFLogxK

U2 - 10.1016/j.jenvman.2019.109730

DO - 10.1016/j.jenvman.2019.109730

M3 - Journal article

C2 - 31665689

AN - SCOPUS:85073696119

VL - 253

JO - Journal of Environmental Management

JF - Journal of Environmental Management

SN - 0301-4797

M1 - 109730

ER -