Effect of calcium peroxide pretreatment on the remediation of sulfonamide antibiotics (SMs) by Chlorella sp.

Vo, HNP; Ngo, HH; Guo, W; Nguyen, KH; Chang, SW; Nguyen, DD; Cheng, D; Bui, XT; Liu, Y; Zhang, X

Effect of calcium peroxide pretreatment on the remediation of sulfonamide antibiotics (SMs) by Chlorella sp.

Vo, HNP Ngo, HH Guo, W

Nguyen, KH Chang, SW Nguyen, DD Cheng, D Bui, XT Liu, Y Zhang, X

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: The Science of the total environment, 2021, 793, pp. 148598
Issue Date:: 2021-11

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Field	Value	Language
dc.contributor.author	Vo, HNP
dc.contributor.author	Ngo, HH
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858
dc.contributor.author	Nguyen, KH
dc.contributor.author	Chang, SW
dc.contributor.author	Nguyen, DD
dc.contributor.author	Cheng, D
dc.contributor.author	Bui, XT
dc.contributor.author	Liu, Y
dc.contributor.author	Zhang, X
dc.date.accessioned	2021-12-06T06:34:43Z
dc.date.available	2021-06-18
dc.date.available	2021-12-06T06:34:43Z
dc.date.issued	2021-11
dc.identifier.citation	The Science of the total environment, 2021, 793, pp. 148598
dc.identifier.issn	0048-9697
dc.identifier.issn	1879-1026
dc.identifier.uri	http://hdl.handle.net/10453/152154
dc.description.abstract	This study investigated the effect of CaO<sub>2</sub> pretreatment on sulfonamide antibiotics (SMs) remediation by Chlorella sp. Results showed that a CaO<sub>2</sub> dose ranging from 0.05 to 0.1 g/g biomass was the best and led to higher SMs removal efficacy 5-10% higher than the control. The contributions made by cometabolism and CaO<sub>2</sub> in SMs remediation were very similar. Bioassimilation could remove 24% of sulfadiazine (SDZ) and sulfamethazine (SMZ), and accounted for 38% of sulfamethoxazole (SMX) remediation. Pretreatment by CaO<sub>2</sub> wielded a positive effect on microalgae. The extracellular polymeric substances (EPS) level of the CaO<sub>2</sub> pretreatment microalgae was three times higher when subjected to non-pretreatment. For the long-term, pretreatment microalgae removed SMs 10-20% more than the non-pretreatment microalgae. Protein fractions of EPS in continuous operation produced up to 90 mg/L for cometabolism. For bioassimilation, SMX intensity of the pretreatment samples was 160-fold less than the non-treatment one. It indicated the CaO<sub>2</sub> pretreatment has enhanced the biochemical function of the intracellular environment of microalgae. Peroxidase enzyme involved positively in the cometabolism and degradation of SMs to several metabolites including ring cleavage, hydroxylation and pterin-related conjugation.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier BV
dc.relation.ispartof	The Science of the total environment
dc.relation.isbasedon	10.1016/j.scitotenv.2021.148598
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Environmental Sciences
dc.subject.mesh	Chlorella
dc.subject.mesh	Peroxides
dc.subject.mesh	Sulfonamides
dc.subject.mesh	Anti-Bacterial Agents
dc.subject.mesh	Microalgae
dc.subject.mesh	Anti-Bacterial Agents
dc.subject.mesh	Chlorella
dc.subject.mesh	Microalgae
dc.subject.mesh	Peroxides
dc.subject.mesh	Sulfonamides
dc.title	Effect of calcium peroxide pretreatment on the remediation of sulfonamide antibiotics (SMs) by Chlorella sp.
dc.type	Journal Article
utslib.citation.volume	793
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	open_access	*
utslib.copyright.embargo	2023-11-01T00:00:00+1000Z
dc.date.updated	2021-12-06T06:34:42Z
pubs.publication-status	Published
pubs.volume	793

Abstract:

This study investigated the effect of CaO₂ pretreatment on sulfonamide antibiotics (SMs) remediation by Chlorella sp. Results showed that a CaO₂ dose ranging from 0.05 to 0.1 g/g biomass was the best and led to higher SMs removal efficacy 5-10% higher than the control. The contributions made by cometabolism and CaO₂ in SMs remediation were very similar. Bioassimilation could remove 24% of sulfadiazine (SDZ) and sulfamethazine (SMZ), and accounted for 38% of sulfamethoxazole (SMX) remediation. Pretreatment by CaO₂ wielded a positive effect on microalgae. The extracellular polymeric substances (EPS) level of the CaO₂ pretreatment microalgae was three times higher when subjected to non-pretreatment. For the long-term, pretreatment microalgae removed SMs 10-20% more than the non-pretreatment microalgae. Protein fractions of EPS in continuous operation produced up to 90 mg/L for cometabolism. For bioassimilation, SMX intensity of the pretreatment samples was 160-fold less than the non-treatment one. It indicated the CaO₂ pretreatment has enhanced the biochemical function of the intracellular environment of microalgae. Peroxidase enzyme involved positively in the cometabolism and degradation of SMs to several metabolites including ring cleavage, hydroxylation and pterin-related conjugation.

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http://hdl.handle.net/10453/152154