2008
DOI: 10.1016/j.watres.2008.07.028
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Coagulation behavior of Al13 aggregates

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Cited by 103 publications
(51 citation statements)
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“…Al 13 contributed to higher removal efficiencies at low dosages of 1.0-2.0 mg/L than AS and PACl, while the difference turned out to be neglectable at higher dosage range of 3.0-10.0 mg/L. This could be ascribed to the different charge neutralization abilities of coagulants, which was believed to be the major mechanism in pollutant removal at low coagulant concentrations [27]. Zeta potential data for different coagulation systems were measured ( Fig.…”
Section: Removal Of Ha With Different Al-based Coagulants/miex Resinmentioning
confidence: 93%
See 1 more Smart Citation
“…Al 13 contributed to higher removal efficiencies at low dosages of 1.0-2.0 mg/L than AS and PACl, while the difference turned out to be neglectable at higher dosage range of 3.0-10.0 mg/L. This could be ascribed to the different charge neutralization abilities of coagulants, which was believed to be the major mechanism in pollutant removal at low coagulant concentrations [27]. Zeta potential data for different coagulation systems were measured ( Fig.…”
Section: Removal Of Ha With Different Al-based Coagulants/miex Resinmentioning
confidence: 93%
“…The Al species distributions of coagulants were determined by the 27 Al NMR (nuclear magnetic resonance) spectroscopy to provide speciation based on structure symmetry of specie and Al-Ferron timed complexation spectrophotometer with ferron reagent to provide speciation based on chemical reactivity. Table 1 lists the Al species distributions of three coagulants.…”
Section: Preparation and Characterization Of Coagulantsmentioning
confidence: 99%
“…The outside fluoride is attached by ionic exchange and charge neutralization and is easy to be replaced by OH À . Comparatively, the inside fluoride as being removed by sweep flocculation is more stable than the outside fluoride [39], and it is reluctant to be substituted by OH À . This is in accordance with the release of fluoride from AlCl 3 flocs being more significant than that from PACl flocs [40].…”
Section: Proposed Mechanism Of Fluoride Removal By Different Al Speciesmentioning
confidence: 98%
“…According to the analysis method of ferron colorimetric and 27 Al nuclear magnetic resonance, Al species are usually divided into monomeric species (e.g., Al(OH) 2 + , Al 2 (OH) 2 4+ , Al 3 (OH) 4 5+ ), medium polymer species (i.e., AlO 4 Al 12 (OH) 24 (H 2 O) 12 7+ , Al 13 ), and colloidal or solid species [28][29][30]. Previous studies indicated that with high positive charge and strong binding ability [31][32][33], both pre-formed and in-situ formed Al 13 polymer are the most active species in Al based coagulants responsible for coagulation [21,34,35]. Thus, researchers paid more attention to the regulatory method of Al 13 formation and subsequent efficiency enhancement during CC process.…”
Section: Introductionmentioning
confidence: 99%