Characterization and sulfonamide antibiotics adsorption capacity of spent coffee grounds based biochar and hydrochar.

Zhang, X; Zhang, Y; Ngo, HH; Guo, W; Wen, H; Zhang, D; Li, C; Qi, L

Characterization and sulfonamide antibiotics adsorption capacity of spent coffee grounds based biochar and hydrochar.

Zhang, X Zhang, Y Ngo, HH Guo, W

Wen, H Zhang, D Li, C Qi, L

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: The Science of the total environment, 2020, 716, pp. 137015
Issue Date:: 2020-05

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Field	Value	Language
dc.contributor.author	Zhang, X
dc.contributor.author	Zhang, Y
dc.contributor.author	Ngo, HH
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858
dc.contributor.author	Wen, H
dc.contributor.author	Zhang, D
dc.contributor.author	Li, C
dc.contributor.author	Qi, L
dc.date.accessioned	2020-07-19T13:27:50Z
dc.date.available	2020-01-29
dc.date.available	2020-07-19T13:27:50Z
dc.date.issued	2020-05
dc.identifier.citation	The Science of the total environment, 2020, 716, pp. 137015
dc.identifier.issn	1879-1026
dc.identifier.issn	1879-1026
dc.identifier.uri	http://hdl.handle.net/10453/141804
dc.description.abstract	A large amount of spent coffee grounds is produced as a processing waste each year during making the coffee beverage. Sulfonamide antibiotics (SAs) are frequently detected in the environment and cause pollution problems. In this study, biochar (BC) and hydrochar (HC) were derived from spent coffee grounds through pyrolysis and hydrothermal carbonization, respectively. Their characteristics and sulfonamide antibiotics adsorption were investigated and compared with reference to adsorption capacity, adsorption isotherm and kinetics. Results showed BC possessed more carbonization and less oxygen-containing functional groups than HC when checked by Elemental Analysis, X-ray diffraction, X-ray photoelectron spectrometry and Fourier transform infrared. These groups affected the adsorption of sulfonamide antibiotics and adsorption mechanism. The maximum adsorption capacities of BC for sulfadiazine (SDZ) and sulfamethoxazole (SMX) were 121.5 μg/g and 130.1 μg/g at 25 °C with the initial antibiotic concentration of 500 μg/L, respectively. Meanwhile the maximum adsorption capacities of HC were 82.2 μg/g and 85.7 μg/g, respectively. Moreover, the adsorption mechanism for SAs adsorbed onto BC may be dominated by π-π electron donor-acceptor interactions, yet the SAs adsorption to HC may be attributed to hydrogen bonds. Further analysis of the adsorption isotherms and kinetics, found that physical and chemical interactions were involved in the SAs adsorption onto BC and HC. Overall, results suggested that: firstly, pyrolysis was an effective thermochemical conversion of spent coffee grounds; and secondly, BC was the more promising adsorbent for removing sulfonamide antibiotics.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	ELSEVIER
dc.relation.ispartof	The Science of the total environment
dc.relation.isbasedon	10.1016/j.scitotenv.2020.137015
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Environmental Sciences
dc.subject.mesh	Charcoal
dc.subject.mesh	Sulfonamides
dc.subject.mesh	Anti-Bacterial Agents
dc.subject.mesh	Water Pollutants, Chemical
dc.subject.mesh	Kinetics
dc.subject.mesh	Adsorption
dc.subject.mesh	Coffee
dc.subject.mesh	Adsorption
dc.subject.mesh	Anti-Bacterial Agents
dc.subject.mesh	Charcoal
dc.subject.mesh	Coffee
dc.subject.mesh	Kinetics
dc.subject.mesh	Sulfonamides
dc.subject.mesh	Water Pollutants, Chemical
dc.title	Characterization and sulfonamide antibiotics adsorption capacity of spent coffee grounds based biochar and hydrochar.
dc.type	Journal Article
utslib.citation.volume	716
utslib.location.activity	Netherlands
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
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
utslib.copyright.status	open_access	*
utslib.copyright.embargo	2022-05-01T00:00:00+1000Z
dc.date.updated	2020-07-19T13:27:39Z
pubs.publication-status	Published
pubs.volume	716

Abstract:

A large amount of spent coffee grounds is produced as a processing waste each year during making the coffee beverage. Sulfonamide antibiotics (SAs) are frequently detected in the environment and cause pollution problems. In this study, biochar (BC) and hydrochar (HC) were derived from spent coffee grounds through pyrolysis and hydrothermal carbonization, respectively. Their characteristics and sulfonamide antibiotics adsorption were investigated and compared with reference to adsorption capacity, adsorption isotherm and kinetics. Results showed BC possessed more carbonization and less oxygen-containing functional groups than HC when checked by Elemental Analysis, X-ray diffraction, X-ray photoelectron spectrometry and Fourier transform infrared. These groups affected the adsorption of sulfonamide antibiotics and adsorption mechanism. The maximum adsorption capacities of BC for sulfadiazine (SDZ) and sulfamethoxazole (SMX) were 121.5 μg/g and 130.1 μg/g at 25 °C with the initial antibiotic concentration of 500 μg/L, respectively. Meanwhile the maximum adsorption capacities of HC were 82.2 μg/g and 85.7 μg/g, respectively. Moreover, the adsorption mechanism for SAs adsorbed onto BC may be dominated by π-π electron donor-acceptor interactions, yet the SAs adsorption to HC may be attributed to hydrogen bonds. Further analysis of the adsorption isotherms and kinetics, found that physical and chemical interactions were involved in the SAs adsorption onto BC and HC. Overall, results suggested that: firstly, pyrolysis was an effective thermochemical conversion of spent coffee grounds; and secondly, BC was the more promising adsorbent for removing sulfonamide antibiotics.

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http://hdl.handle.net/10453/141804