{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["5"],"submitter":["Mugele F"],"pubmed_abstract":["The relative wettability of oil and water on solid surfaces is generally governed by a complex competition of molecular interaction forces acting in such three-phase systems. Herein, we experimentally demonstrate how the adsorption of in nature abundant divalent Ca(2+) cations to solid-liquid interfaces induces a macroscopic wetting transition from finite contact angles (≈ 10°) with to near-zero contact angles without divalent cations. We developed a quantitative model based on DLVO theory to demonstrate that this transition, which is observed on model clay surfaces, mica, but not on silica surfaces nor for monovalent K(+) and Na(+) cations is driven by charge reversal of the solid-liquid interface. Small amounts of a polar hydrocarbon, stearic acid, added to the ambient decane synergistically enhance the effect and lead to water contact angles up to 70° in the presence of Ca(2+). Our results imply that it is the removal of divalent cations that makes reservoir rocks more hydrophilic, suggesting a generalizable strategy to control wettability and an explanation for the success of so-called low salinity water flooding, a recent enhanced oil recovery technology."],"journal":["Scientific reports"],"pagination":["10519"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC4444960"],"repository":["biostudies-literature"],"pubmed_title":["Ion adsorption-induced wetting transition in oil-water-mineral systems."],"pmcid":["PMC4444960"],"pubmed_authors":["Bera B","van den Ende D","Maestro A","Stocker I","Cavalli A","Duits M","Collins I","Cohen-Stuart M","Mugele F","Siretanu I"],"additional_accession":[]},"is_claimable":false,"name":"Ion adsorption-induced wetting transition in oil-water-mineral systems.","description":"The relative wettability of oil and water on solid surfaces is generally governed by a complex competition of molecular interaction forces acting in such three-phase systems. Herein, we experimentally demonstrate how the adsorption of in nature abundant divalent Ca(2+) cations to solid-liquid interfaces induces a macroscopic wetting transition from finite contact angles (≈ 10°) with to near-zero contact angles without divalent cations. We developed a quantitative model based on DLVO theory to demonstrate that this transition, which is observed on model clay surfaces, mica, but not on silica surfaces nor for monovalent K(+) and Na(+) cations is driven by charge reversal of the solid-liquid interface. Small amounts of a polar hydrocarbon, stearic acid, added to the ambient decane synergistically enhance the effect and lead to water contact angles up to 70° in the presence of Ca(2+). Our results imply that it is the removal of divalent cations that makes reservoir rocks more hydrophilic, suggesting a generalizable strategy to control wettability and an explanation for the success of so-called low salinity water flooding, a recent enhanced oil recovery technology.","dates":{"release":"2015-01-01T00:00:00Z","publication":"2015 May","modification":"2024-11-06T06:02:17.295Z","creation":"2019-03-27T01:52:12Z"},"accession":"S-EPMC4444960","cross_references":{"pubmed":["26013156"],"doi":["10.1038/srep10519"]}}