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dc.contributor.authorLi, Y
dc.contributor.authorWang, D
dc.contributor.authorYang, G
dc.contributor.authorYuan, X
dc.contributor.authorLi, H
dc.contributor.authorWang, Q
dc.contributor.authorNi, B
dc.contributor.authorHe, D
dc.contributor.authorFu, Q
dc.contributor.authorJiang, L
dc.contributor.authorTang, W
dc.contributor.authorYang, F
dc.contributor.authorChen, H
dc.description.abstractBefore disposal of dredged sediments (DS), filtrating DS is commonly used for their volume reduction. The work, for the first time, investigated Fe(II)/SPC processing DS to advance their solid–liquid separation from filtering feasibility, operational mechanism, technic reinforcement to potential implication. 16 mg Fe(II)/TSS & 60 mg SPC/TSS treatment elevated solid content of DS from 25.7% to 55.7% (vacuum filtration for 10 min), along with filtrate volume increased from 45.0 mL to 77.5 mL. •OH and Fe(III) with their hydrolyzed polymers, from Fe(II)/SPC system, are mainly lying behind the improved solid–liquid separation. Detailedly, the dilapidation of extracellular polymeric substances (EPS) with the destruction of biomolecules in EPS was completed by •OH invasion, which might rearrange the extracellular/intracellular protein configuration, with the increments of β-sheet & random coil but the decrement of α-helices. Simultaneously, Fe(III) and their hydrolyzed polymers promoted the relief of electrostatic repulsive-forces and the squeezing of double-electric layers, and the gathered DS could be held by integration of Fe(III) with –COOH and –OH. Additionally, CaO strengthened the filtering velocity/extent of Fe(II)/SPC-treated DS. After 70 mg/g CaO treatment, its solid content further elevated to 61.7% after vacuum filtration for 5.5 min, mainly resulting from skeleton construction by CaO, charge neutrality by released Ca2+, bridging cell debris and biopolymers by released Ca2+, compression of colloids double layers by released Ca2+, and binding PO43- in outer centrate liquid by released Ca2+.en_US
dc.publisherElsevier BVen_US
dc.relation.ispartofjournalChemical Engineering Journalen_US
dc.subject.fieldofresearchChemical Engineeringen_US
dc.subject.fieldofresearchCivil Engineeringen_US
dc.subject.fieldofresearchEnvironmental Engineeringen_US
dc.titleComprehensive investigation into in-situ chemical oxidation of ferrous iron/sodium percarbonate (Fe(II)/SPC) processing dredged sediments for positive feedback of solid–liquid separationen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Articlesen_US
dcterms.bibliographicCitationLi, Y; Wang, D; Yang, G; Yuan, X; Li, H; Wang, Q; Ni, B; He, D; Fu, Q; Jiang, L; Tang, W; Yang, F; Chen, H, Comprehensive investigation into in-situ chemical oxidation of ferrous iron/sodium percarbonate (Fe(II)/SPC) processing dredged sediments for positive feedback of solid–liquid separation, Chemical Engineering Journal, 2021, 425, pp. 130467en_US
gro.description.notepublicThis publication has been entered in Griffith Research Online as an advanced online version.en_US
gro.hasfulltextNo Full Text
gro.griffith.authorWang, Qilin

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