Factors influencing inapplicability of cosolvency-induced model on organic acid sorption onto humic substance from methanol mixture
DC Field | Value | Language |
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dc.contributor.author | Kim, Minhee | - |
dc.contributor.author | Kim, Juhee | - |
dc.contributor.author | Kim, Jeong-Gyu | - |
dc.contributor.author | Hyun, Seunghun | - |
dc.date.accessioned | 2021-09-04T11:52:52Z | - |
dc.date.available | 2021-09-04T11:52:52Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2015-10 | - |
dc.identifier.issn | 0944-1344 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/92266 | - |
dc.description.abstract | Applicability of cosolvency model for describing the sorption of organic acids to humic substance was investigated by analyzing dataset of sorption (K-m) and solubility (S-m) of selected solutes (benzoic acid, 1-naphthoic acid, 2,4-dichlorophenoxyacetic acid, and 2,4,6-trichlorophenol (2,4, 6-TCP)) as a function of pH(appCME) (apparent pH of liquid phase) and f(c) (methanol volume fractions). For all solutes, the Km decreased with fc with the Km reduction being less than the S-m-based prediction. The slope of log K-m-f(c) plot in the three organic carboxylic acids was well correlated with their cosolvency power, whereas the data of organic phenolic acid (2,4,6-TCP) was placed above the trend, indicating the different actions of functional groups. The occurrence of Ca2+ bridge between carboxylate and negatively charged humic surface may explain this phenomenon. Normalizing the Km to the corresponding Sm (alpha'= K-m/S-m) was not in unity over the pH(app)-f(c) range but decreased with f(c), indicating a possible structural modification of sorption domain favoring extra sorption. For a given solute, the alpha' of neutral species was always greater than that of anionic species, showing that extra interaction will be likely at pH(app) <pK(a)-2 when both solute and sorbent are uncharged. In short, the knowledge of cosolvent-enhanced solubility is incapable of describing sorption of organic acids by humic substance in methanol/water mixtures. Modification of humic structure and hydrophilic interaction (such as Ca2+ bridge and same-charge repulsion) is considered a relevant process that possibly restricts the applicability of the cosolvency model. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | SPRINGER HEIDELBERG | - |
dc.subject | VARIABLE-CHARGE SOILS | - |
dc.subject | PENTACHLOROPHENOL SORPTION | - |
dc.subject | ANION-EXCHANGE | - |
dc.subject | WATER SYSTEMS | - |
dc.subject | OCTANOL-WATER | - |
dc.subject | SOLUBILITY | - |
dc.subject | SOLVENTS | - |
dc.subject | SEDIMENT | - |
dc.subject | SOLUTE | - |
dc.subject | PH | - |
dc.title | Factors influencing inapplicability of cosolvency-induced model on organic acid sorption onto humic substance from methanol mixture | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Jeong-Gyu | - |
dc.contributor.affiliatedAuthor | Hyun, Seunghun | - |
dc.identifier.doi | 10.1007/s11356-015-4742-x | - |
dc.identifier.scopusid | 2-s2.0-84945451304 | - |
dc.identifier.wosid | 000363966900048 | - |
dc.identifier.bibliographicCitation | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, v.22, no.20, pp.15745 - 15754 | - |
dc.relation.isPartOf | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | - |
dc.citation.title | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | - |
dc.citation.volume | 22 | - |
dc.citation.number | 20 | - |
dc.citation.startPage | 15745 | - |
dc.citation.endPage | 15754 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.subject.keywordPlus | VARIABLE-CHARGE SOILS | - |
dc.subject.keywordPlus | PENTACHLOROPHENOL SORPTION | - |
dc.subject.keywordPlus | ANION-EXCHANGE | - |
dc.subject.keywordPlus | WATER SYSTEMS | - |
dc.subject.keywordPlus | OCTANOL-WATER | - |
dc.subject.keywordPlus | SOLUBILITY | - |
dc.subject.keywordPlus | SOLVENTS | - |
dc.subject.keywordPlus | SEDIMENT | - |
dc.subject.keywordPlus | SOLUTE | - |
dc.subject.keywordPlus | PH | - |
dc.subject.keywordAuthor | Hydrophobic organic acid | - |
dc.subject.keywordAuthor | Cosolvency | - |
dc.subject.keywordAuthor | Sorption | - |
dc.subject.keywordAuthor | Humic substance | - |
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