Combination of magnetic biochar beads and peroxymonosulfate pretreatment process for mitigating ultrafiltration membrane fouling caused by typical natural organic matters in water

Li, Y; Zhang, X; Ngo, HH; Guo, W; Long, T; Wen, HT; Zhang, D

Combination of magnetic biochar beads and peroxymonosulfate pretreatment process for mitigating ultrafiltration membrane fouling caused by typical natural organic matters in water

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

Long, T Wen, HT Zhang, D

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Journal of Membrane Science, 2023, 670, pp. 121383
Issue Date:: 2023-03-15

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Field	Value	Language
dc.contributor.author	Li, Y
dc.contributor.author	Zhang, X
dc.contributor.author	Ngo, HH
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858
dc.contributor.author	Long, T
dc.contributor.author	Wen, HT
dc.contributor.author	Zhang, D
dc.date.accessioned	2023-09-16T07:59:46Z
dc.date.available	2023-09-16T07:59:46Z
dc.date.issued	2023-03-15
dc.identifier.citation	Journal of Membrane Science, 2023, 670, pp. 121383
dc.identifier.issn	0376-7388
dc.identifier.issn	1873-3123
dc.identifier.uri	http://hdl.handle.net/10453/172134
dc.description.abstract	To relieve the serious membrane fouling caused by natural organic matter (NOM) in ultrafiltration (UF) process, in this study, magnetic biochar-iron cross-linking alginate (MBCA) beads were prepared using alginate doped with coffee grounds. These MBCA-beads when combined with peroxymonosulfate (PMS) served as an UF pretreatment to alleviate membrane fouling. Results demonstrated that membrane fouling caused by humic acid (HA) can be completely alleviated at a speed of 3 rpm, and dosages of 0.5 g and 25 mg/L for MBCA-beads and PMS, respectively. When HA (10 mg/L) and sodium alginate (SA, 5 mg/L) were present together, the MBCA-beads/PMS pretreatment could remove UV254 of 98% and DOC of 68%. The main mechanisms for HA and SA removal were radicals oxidation and coagulation with in situ generated Fe(III). The contribution of •OH was about 14.83% and the joint effect of SO4−• and coagulation accounted for about 50%. Additionally, the pathways of pretreatment to mitigate HA-SA induced membrane fouling were attributed to the reduced cake layer fouling and intermediate blocking. Finally, when treating real river water, the pretreatment significantly reduced 50% of total fouling, and about 60% of the reversible fouling after 10 h filtration. This also displayed long-lasting membrane fouling mitigation ability.
dc.language	en
dc.publisher	Elsevier
dc.relation.ispartof	Journal of Membrane Science
dc.relation.isbasedon	10.1016/j.memsci.2023.121383
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	03 Chemical Sciences, 09 Engineering
dc.subject.classification	Chemical Engineering
dc.subject.classification	34 Chemical sciences
dc.subject.classification	40 Engineering
dc.title	Combination of magnetic biochar beads and peroxymonosulfate pretreatment process for mitigating ultrafiltration membrane fouling caused by typical natural organic matters in water
dc.type	Journal Article
utslib.citation.volume	670
utslib.for	03 Chemical Sciences
utslib.for	09 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	embargoed	*
utslib.copyright.embargo	2025-03-01T00:00:00+1000Z
dc.date.updated	2023-09-16T07:59:45Z
pubs.publication-status	Published
pubs.volume	670

Abstract:

To relieve the serious membrane fouling caused by natural organic matter (NOM) in ultrafiltration (UF) process, in this study, magnetic biochar-iron cross-linking alginate (MBCA) beads were prepared using alginate doped with coffee grounds. These MBCA-beads when combined with peroxymonosulfate (PMS) served as an UF pretreatment to alleviate membrane fouling. Results demonstrated that membrane fouling caused by humic acid (HA) can be completely alleviated at a speed of 3 rpm, and dosages of 0.5 g and 25 mg/L for MBCA-beads and PMS, respectively. When HA (10 mg/L) and sodium alginate (SA, 5 mg/L) were present together, the MBCA-beads/PMS pretreatment could remove UV254 of 98% and DOC of 68%. The main mechanisms for HA and SA removal were radicals oxidation and coagulation with in situ generated Fe(III). The contribution of •OH was about 14.83% and the joint effect of SO4−• and coagulation accounted for about 50%. Additionally, the pathways of pretreatment to mitigate HA-SA induced membrane fouling were attributed to the reduced cake layer fouling and intermediate blocking. Finally, when treating real river water, the pretreatment significantly reduced 50% of total fouling, and about 60% of the reversible fouling after 10 h filtration. This also displayed long-lasting membrane fouling mitigation ability.

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http://hdl.handle.net/10453/172134