DC Field | Value | Language |
---|---|---|
dc.contributor.author | Chung, Youngkun | ko |
dc.contributor.author | Park, Daeseon | ko |
dc.contributor.author | Kim, Hyojeon | ko |
dc.contributor.author | Kim, Yuri | ko |
dc.contributor.author | Kang, Seoktae | ko |
dc.date.accessioned | 2020-10-14T00:55:08Z | - |
dc.date.available | 2020-10-14T00:55:08Z | - |
dc.date.created | 2020-09-24 | - |
dc.date.created | 2020-09-24 | - |
dc.date.created | 2020-09-24 | - |
dc.date.created | 2020-09-24 | - |
dc.date.created | 2020-09-24 | - |
dc.date.created | 2020-09-24 | - |
dc.date.issued | 2021-02 | - |
dc.identifier.citation | JOURNAL OF HAZARDOUS MATERIALS, v.403, pp.123578 | - |
dc.identifier.issn | 0304-3894 | - |
dc.identifier.uri | http://hdl.handle.net/10203/276541 | - |
dc.description.abstract | In this study, the impacts of gamma-irradiation from the low- and intermediate-level liquid radioactive wastewaters (LILW) to polyamide (PA) structures of nanofiltration (NF) membranes were investigated. As the gamma-irradiation increased to 300 kGy in the aqueous solution at 5 bar, both the salt rejection and the water permeability of NF membranes were decreased from 95.6 ± 0.1%–74.6 ± 0.5%, and from 33.7 ± 0.3 LMH to 21.4 ± 0.5 LMH, respectively. The surface free energy and Young's modulus of the membrane indicated the decrease in hydrophilicity and the increase in fragility of PA structure after gamma-irradiation. X-ray photoelectron spectroscopy and the streaming potential analysis exhibited that the gamma-irradiation resulted the increase in the cross-linked portion of the amide bonding from 28% to 45% due to the gamma-induced new bonding between unbound carboxylic groups and amine groups. Nuclear magnetic resonance analysis confirmed that the poly(p-phenylene) in polyamide structure were changed to poly(cyclohexane) and poly(cyclohexene) by hydrogen radical disproportionation generated from the gamma-irradiated water, and it is responsible to the increase of the cross-linked PA structures. The decrease in salt rejection and water permeability is attributed to the aging of PA structures by gamma-irradiation, thus, should be carefully monitored during the treatment of LILW using NF membrane processes. | - |
dc.language | English | - |
dc.publisher | ELSEVIER | - |
dc.title | The impact of gamma-irradiation from radioactive liquid wastewater on polymeric structures of nanofiltration (NF) membranes | - |
dc.type | Article | - |
dc.identifier.wosid | 000596474100003 | - |
dc.identifier.scopusid | 2-s2.0-85090711088 | - |
dc.type.rims | ART | - |
dc.citation.volume | 403 | - |
dc.citation.beginningpage | 123578 | - |
dc.citation.publicationname | JOURNAL OF HAZARDOUS MATERIALS | - |
dc.identifier.doi | 10.1016/j.jhazmat.2020.123578 | - |
dc.contributor.localauthor | Kang, Seoktae | - |
dc.contributor.nonIdAuthor | Kim, Yuri | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Gamma-irradiation | - |
dc.subject.keywordAuthor | Polyamide | - |
dc.subject.keywordAuthor | Cross-linking | - |
dc.subject.keywordAuthor | Nanofiltration membrane | - |
dc.subject.keywordAuthor | Radioactive liquid wastewater | - |
dc.subject.keywordPlus | REVERSE-OSMOSIS MEMBRANES | - |
dc.subject.keywordPlus | ELECTRON-BEAM | - |
dc.subject.keywordPlus | LOW-LEVEL | - |
dc.subject.keywordPlus | DEGRADATION | - |
dc.subject.keywordPlus | REMOVAL | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | PERMEATION | - |
dc.subject.keywordPlus | SEPARATION | - |
dc.subject.keywordPlus | TRANSPORT | - |
dc.subject.keywordPlus | CS-137 | - |
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