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Synthesis of quaternary ammonium-functionalized silica gel through grafting of dimethyl dodecyl [3-(trimethoxysilyl)propyl]ammonium chloride for nitrate removal in batch and column studies
DC Field | Value | Language |
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dc.contributor.author | Kang, Jin-Kyu | - |
dc.contributor.author | Lee, Seung-Chan | - |
dc.contributor.author | Kim, Song-Bae | - |
dc.date.accessioned | 2022-06-24T07:15:51Z | - |
dc.date.available | 2022-06-24T07:15:51Z | - |
dc.date.created | 2020-03-25 | - |
dc.date.created | 2020-03-25 | - |
dc.date.issued | 2019-09 | - |
dc.identifier.citation | Journal of the Taiwan Institute of Chemical Engineers, Vol.102, pp.153-162 | - |
dc.identifier.issn | 1876-1070 | - |
dc.identifier.uri | https://hdl.handle.net/10371/184029 | - |
dc.description.abstract | In this study, quaternary ammonium functionalized-silica gel was synthesized for nitrate removal using dimethyl dodecyl[3-(trimethoxysilyl)propyl] ammonium chloride (DMDAC) as a quaternary ammonium silane coupling agent, which was grafted to silica gel to obtain the DMDAC-silica gel. Batch experiments showed that the DMDAC-silica gel could effectively remove nitrate in the pH range of 4 to 10. Kinetic and equilibrium experiments showed that nitrate removal by the DMDAC-silica gel reached equilibrium in 60 min with a maximum nitrate removal capacity of 56.4 mg/g. Fixed-bed column experiments (bed depth = 10-30cm; inner diameter of column = 2.5 cm; flow rate = 0.06-0.18 L/h) in nitrate solution demonstrated the dynamic behaviors of nitrate removal by the DMDAC-silica gel under various experimental conditions of flow rate, bed depth, and influent nitrate concentration. The DMDAC-silica gels could be successfully used for nitrate removal and regenerated and reused with 10% NaCl solution in the column. In groundwater (nitrate =140 mg/L, chloride = 63 mg/L, sulfate = 440 mg/L, and bicarbonate = 20-300 mg/L), the nitrate BTCs appeared behind the sulfate BTCs with alpha(N)(S) values of 5.7-11.3, indicating that the DMDAC-silica gel could selectively remove nitrate over sulfate in dynamic flow conditions. (C) 2019 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved. | - |
dc.language | 영어 | - |
dc.publisher | Elsevier Science | - |
dc.title | Synthesis of quaternary ammonium-functionalized silica gel through grafting of dimethyl dodecyl [3-(trimethoxysilyl)propyl]ammonium chloride for nitrate removal in batch and column studies | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.jtice.2019.05.019 | - |
dc.citation.journaltitle | Journal of the Taiwan Institute of Chemical Engineers | - |
dc.identifier.wosid | 000479020700017 | - |
dc.identifier.scopusid | 2-s2.0-85066955596 | - |
dc.citation.endpage | 162 | - |
dc.citation.startpage | 153 | - |
dc.citation.volume | 102 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Kim, Song-Bae | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | FIXED-BED COLUMN | - |
dc.subject.keywordPlus | AQUEOUS-SOLUTION | - |
dc.subject.keywordPlus | DRINKING-WATER | - |
dc.subject.keywordPlus | SELECTIVE REMOVAL | - |
dc.subject.keywordPlus | ENHANCED REMOVAL | - |
dc.subject.keywordPlus | CHITOSAN BEADS | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | PHOSPHATE | - |
dc.subject.keywordPlus | EXCHANGE | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordAuthor | Column experiment | - |
dc.subject.keywordAuthor | Nitrate | - |
dc.subject.keywordAuthor | Quaternary ammonium chloride | - |
dc.subject.keywordAuthor | Quaternized adsorbent | - |
dc.subject.keywordAuthor | Silica gel | - |
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