Hydrophobic flocculation characteristics of calcite and effects of some inorganic dispersants

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dc.contributor.authorUcbeyiay, H.
dc.contributor.authorOzkan, A.
dc.date.accessioned2020-03-26T17:03:41Z
dc.date.available2020-03-26T17:03:41Z
dc.date.issued2006
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractHydrophobic flocculation characteristics of calcite mineral were investigated using sodium dodecyl sulphate (SDS) and Acro 845. Calcite suspensions could be flocculated by these anionic surfactants in the pH range of 9.3-11.5. Especially SDS was more effective on the calcite suspensions at pH values lower than 10.5. The flocculation of calcite with SDS and Aero 845 increased rapidly with increasing surfactant concentration. However, it started to decrease at concentrations higher than 30 mg/L for Aero 845 and 50 mg/L for SDS. It was found that the maximum aggregation degree of calcite particles could be achieved with a stirring speed of 500 rpm and a flocculation time of 3 min. The effects of sodium silicate, sodium polyphosphate and sodium phosphate, used as inorganic dispersants, on the flocculation of calcite were also studied. In the presence of sodium silicate and sodium polyphosphate, the flocculation power values obtained with both surfactants decreased with increasing dispersant concentration till approximately 0.5 and 1 g/L concentrations, respectively. Also, the flocculation of calcite with Aero 845 and SDS decreased towards 0.5 and 1 g/L concentrations of sodium phosphate, respectively. At higher dispersant concentrations, these power values remained relatively constant for sodium silicate, and different effects were also observed for other dispersants depending on surfactant type used in the experiments. In addition, it was found that sodium silicate was more effective to disperse the calcite suspensions with SDS and Aero 845.en_US
dc.identifier.endpage454en_US
dc.identifier.issn0971-457Xen_US
dc.identifier.issue5en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage448en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12395/20529
dc.identifier.volume13en_US
dc.identifier.wosWOS:000241996500004en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherNATL INST SCIENCE COMMUNICATIONen_US
dc.relation.ispartofINDIAN JOURNAL OF CHEMICAL TECHNOLOGYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectcalciteen_US
dc.subjecthydrophobic flocculationen_US
dc.subjectsodium dodecyl sulphateen_US
dc.subjectAero 845en_US
dc.subjectdispersanten_US
dc.titleHydrophobic flocculation characteristics of calcite and effects of some inorganic dispersantsen_US
dc.typeArticleen_US

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