Hybrid use of coal slag and calcined ferralsol as wetland substrate for improving phosphorus removal from wastewater

Nguyen, TAH; Le, TV; Ngo, HH; Guo, WS; Vu, ND; Tran, TTT; Nguyen, THH; Nguyen, XC; Nguyen, VH; Pham, TT

Hybrid use of coal slag and calcined ferralsol as wetland substrate for improving phosphorus removal from wastewater

Nguyen, TAH Le, TV Ngo, HH Guo, WS Vu, ND Tran, TTT Nguyen, THH Nguyen, XC Nguyen, VH Pham, TT

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Publisher:: ELSEVIER SCIENCE SA
Publication Type:: Journal Article
Citation:: Chemical Engineering Journal, 2022, 428
Issue Date:: 2022-01-15

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Field	Value	Language
dc.contributor.author	Nguyen, TAH
dc.contributor.author	Le, TV
dc.contributor.author	Ngo, HH
dc.contributor.author	Guo, WS
dc.contributor.author	Vu, ND
dc.contributor.author	Tran, TTT
dc.contributor.author	Nguyen, THH
dc.contributor.author	Nguyen, XC
dc.contributor.author	Nguyen, VH
dc.contributor.author	Pham, TT
dc.date.accessioned	2023-01-26T01:40:31Z
dc.date.available	2023-01-26T01:40:31Z
dc.date.issued	2022-01-15
dc.identifier.citation	Chemical Engineering Journal, 2022, 428
dc.identifier.issn	1385-8947
dc.identifier.issn	1873-3212
dc.identifier.uri	http://hdl.handle.net/10453/165455
dc.description.abstract	In this study, natural ferralsol (NF) was calcined to enhance its phosphorus (P) adsorption. The NF and calcined ferralsol at the selected temperature (CF500) were characterized by SEM, FTIR, XRD, XRF and other experiments to elucidate changes in morphology and physicochemical properties. CF500 and coal slag (CS) were examined as wetland media individually and combinedly. The applicability of CF500 and CS as the hybrid media in the lab–scale horizontal sub–surface flow constructed wetlands (HSSF–CWs) was evaluated. It was found that 500 °C was the best calcination temperature of NF for P adsorption. The maximum P adsorption capacity of CF500 (19.4 mg/g) was 60.4 ± 2.2 % greater than that of NF. While isotherm data of P sorption by CF500 were fitted both Langmuir and Freundlich models, the kinetic data was better described by Pseudo-second-order model. Thermodynamic parameters revealed the endothermic and spontaneous nature of the P sorption by CF500. The combination of CF500 and CS leveraged the merits of individual substrates while mitigated their demerits. The optimal mixing ratio of CF500 to CS was 1.25:1 by volume. The hybrid CF500–CS substrate HSSF–CWs demonstrated satisfactory P removal efficiency (99.44% ± 0.1) and effluent P concentration (0.08 ± 0.01 mg/L). Application of the mixed substrate in the HSSF–CWs resulted in negligible side effects on their effluent quality. Due to abundant availability of raw materials, simplicity of preparation, as well as efficiency and safety of application, a mixture of CF500 and CS is a promising hybrid substrate in HSSF–CWs for P–rich wastewater decontamination.
dc.language	English
dc.publisher	ELSEVIER SCIENCE SA
dc.relation.ispartof	Chemical Engineering Journal
dc.relation.isbasedon	10.1016/j.cej.2021.132124
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0904 Chemical Engineering, 0905 Civil Engineering, 0907 Environmental Engineering
dc.subject.classification	Chemical Engineering
dc.title	Hybrid use of coal slag and calcined ferralsol as wetland substrate for improving phosphorus removal from wastewater
dc.type	Journal Article
utslib.citation.volume	428
utslib.for	0904 Chemical Engineering
utslib.for	0905 Civil Engineering
utslib.for	0907 Environmental Engineering
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	2024-01-01T00:00:00+1000Z
dc.date.updated	2023-01-26T01:40:28Z
pubs.publication-status	Published
pubs.volume	428

Abstract:

In this study, natural ferralsol (NF) was calcined to enhance its phosphorus (P) adsorption. The NF and calcined ferralsol at the selected temperature (CF500) were characterized by SEM, FTIR, XRD, XRF and other experiments to elucidate changes in morphology and physicochemical properties. CF500 and coal slag (CS) were examined as wetland media individually and combinedly. The applicability of CF500 and CS as the hybrid media in the lab–scale horizontal sub–surface flow constructed wetlands (HSSF–CWs) was evaluated. It was found that 500 °C was the best calcination temperature of NF for P adsorption. The maximum P adsorption capacity of CF500 (19.4 mg/g) was 60.4 ± 2.2 % greater than that of NF. While isotherm data of P sorption by CF500 were fitted both Langmuir and Freundlich models, the kinetic data was better described by Pseudo-second-order model. Thermodynamic parameters revealed the endothermic and spontaneous nature of the P sorption by CF500. The combination of CF500 and CS leveraged the merits of individual substrates while mitigated their demerits. The optimal mixing ratio of CF500 to CS was 1.25:1 by volume. The hybrid CF500–CS substrate HSSF–CWs demonstrated satisfactory P removal efficiency (99.44% ± 0.1) and effluent P concentration (0.08 ± 0.01 mg/L). Application of the mixed substrate in the HSSF–CWs resulted in negligible side effects on their effluent quality. Due to abundant availability of raw materials, simplicity of preparation, as well as efficiency and safety of application, a mixture of CF500 and CS is a promising hybrid substrate in HSSF–CWs for P–rich wastewater decontamination.

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