Adsorption recovery of phosphorus in contaminated water by calcium modified biochar derived from spent coffee grounds.

Liu, Y; Wang, S; Huo, J; Zhang, X; Wen, H; Zhang, D; Zhao, Y; Kang, D; Guo, W; Ngo, HH

Adsorption recovery of phosphorus in contaminated water by calcium modified biochar derived from spent coffee grounds.

Liu, Y Wang, S Huo, J Zhang, X Wen, H Zhang, D Zhao, Y Kang, D Guo, W

Ngo, HH

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Sci Total Environ, 2024, 909, pp. 168426
Issue Date:: 2024-01-20

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Field	Value	Language
dc.contributor.author	Liu, Y
dc.contributor.author	Wang, S
dc.contributor.author	Huo, J
dc.contributor.author	Zhang, X
dc.contributor.author	Wen, H
dc.contributor.author	Zhang, D
dc.contributor.author	Zhao, Y
dc.contributor.author	Kang, D
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858
dc.contributor.author	Ngo, HH
dc.date.accessioned	2024-01-07T09:03:20Z
dc.date.available	2023-11-06
dc.date.available	2024-01-07T09:03:20Z
dc.date.issued	2024-01-20
dc.identifier.citation	Sci Total Environ, 2024, 909, pp. 168426
dc.identifier.issn	0048-9697
dc.identifier.issn	1879-1026
dc.identifier.uri	http://hdl.handle.net/10453/174063
dc.description.abstract	Phosphate recovery from water is essential for reducing water eutrophication and alleviating the phosphorus resource crisis. In this study, spent coffee grounds and CaCl2 were used as raw materials and a modifier, respectively, to create a novel calcium modified biochar (MBC) for removing phosphorus from water. The modified biochar (MBC) was the best at removing phosphorous when the modifier concentration was 1.5 M with theoretically maximum adsorption capacity of 70.26 mg/g. MBC also performed well in the wide pH range of 3-11 under different phosphorus concentration gradients, with phosphorus removal efficiency of more than 50 %. According to kinetic analysis, the adsorption process at low phosphorus concentrations (50-100 mg/L) can be more properly described by the pseudo-first-order model, while the pseudo-second-order model best describes the adsorption process at high concentrations (200-600 mg/L). The thermodynamic analysis indicated that the adsorption process was spontaneous and endothermic. Characterization results revealed that surface precipitation, complexation, and ligand exchange were the dominant mechanisms of phosphorus adsorption. MBC has great potential to recover phosphorus from wastewater.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier
dc.relation.ispartof	Sci Total Environ
dc.relation.isbasedon	10.1016/j.scitotenv.2023.168426
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Environmental Sciences
dc.subject.mesh	Phosphorus
dc.subject.mesh	Calcium
dc.subject.mesh	Coffee
dc.subject.mesh	Adsorption
dc.subject.mesh	Kinetics
dc.subject.mesh	Water Pollutants, Chemical
dc.subject.mesh	Charcoal
dc.subject.mesh	Water
dc.subject.mesh	Charcoal
dc.subject.mesh	Calcium
dc.subject.mesh	Phosphorus
dc.subject.mesh	Water
dc.subject.mesh	Water Pollutants, Chemical
dc.subject.mesh	Kinetics
dc.subject.mesh	Adsorption
dc.subject.mesh	Coffee
dc.title	Adsorption recovery of phosphorus in contaminated water by calcium modified biochar derived from spent coffee grounds.
dc.type	Journal Article
utslib.citation.volume	909
utslib.location.activity	Netherlands
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	embargoed	*
utslib.copyright.embargo	2026-01-01T00:00:00+1000Z
dc.date.updated	2024-01-07T09:03:19Z
pubs.publication-status	Published
pubs.volume	909

Abstract:

Phosphate recovery from water is essential for reducing water eutrophication and alleviating the phosphorus resource crisis. In this study, spent coffee grounds and CaCl2 were used as raw materials and a modifier, respectively, to create a novel calcium modified biochar (MBC) for removing phosphorus from water. The modified biochar (MBC) was the best at removing phosphorous when the modifier concentration was 1.5 M with theoretically maximum adsorption capacity of 70.26 mg/g. MBC also performed well in the wide pH range of 3-11 under different phosphorus concentration gradients, with phosphorus removal efficiency of more than 50 %. According to kinetic analysis, the adsorption process at low phosphorus concentrations (50-100 mg/L) can be more properly described by the pseudo-first-order model, while the pseudo-second-order model best describes the adsorption process at high concentrations (200-600 mg/L). The thermodynamic analysis indicated that the adsorption process was spontaneous and endothermic. Characterization results revealed that surface precipitation, complexation, and ligand exchange were the dominant mechanisms of phosphorus adsorption. MBC has great potential to recover phosphorus from wastewater.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/174063