Immobilization of radioactive corrosion products by cold sintering of pure hydroxyapatite

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dc.contributor.authorul Hassan, Muhmoodko
dc.contributor.authorIqbal, Sajidko
dc.contributor.authorYun, Jong-Ilko
dc.contributor.authorRyu, Ho Jinko
dc.date.accessioned2019-07-22T08:30:04Z-
dc.date.available2019-07-22T08:30:04Z-
dc.date.created2019-05-29-
dc.date.issued2019-07-
dc.identifier.citationJOURNAL OF HAZARDOUS MATERIALS, v.374, pp.228 - 237-
dc.identifier.issn0304-3894-
dc.identifier.urihttp://hdl.handle.net/10203/263717-
dc.description.abstractAn efficient method for the consolidation of cobalt (Co(II)) adsorbed calcium hydroxyapatite was investigated to develop a simplified route for decontamination of the coolant system of nuclear power plants and direct immobilization of as-spent adsorbent. Calcium hydroxyapatite nano-powder synthesized by a wet precipitation method was used as an adsorbent and 94% Co(II) surrogate removal from simulated water was measured. The as-spent adsorbent was sintered at 200 degrees C, a temperature significantly lower than conventional sintering temperatures (900-1300 degrees C) for hydroxyapatite, under a uniaxial pressure of 500 MPa for 10 min. The relative density after the cold sintering was > 97% and sintered samples displayed good compressive strength (175 MPa). The normalized leaching rate of the Co(II) was measured as per ASTM-C1285 standard and found to be 2.5 x 10(-5) g/m(2)/day. ANSI/ANS-16.1 test procedure was used to analyze the leachability of the sintered matrices and the measured leaching index value was 6.5. Thus, the use of pure calcium hydroxyapatite nano-powder as adsorbent and its cold sintering offers a mean by which radioactive waste form can be processed in an environment friendly manner.-
dc.languageEnglish-
dc.publisherELSEVIER SCIENCE BV-
dc.titleImmobilization of radioactive corrosion products by cold sintering of pure hydroxyapatite-
dc.typeArticle-
dc.identifier.wosid000472694500027-
dc.identifier.scopusid2-s2.0-85064336349-
dc.type.rimsART-
dc.citation.volume374-
dc.citation.beginningpage228-
dc.citation.endingpage237-
dc.citation.publicationnameJOURNAL OF HAZARDOUS MATERIALS-
dc.identifier.doi10.1016/j.jhazmat.2019.04.038-
dc.contributor.localauthorYun, Jong-Il-
dc.contributor.localauthorRyu, Ho Jin-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorCold sintering-
dc.subject.keywordAuthorWaste immobilization-
dc.subject.keywordAuthorNano-ceramic-
dc.subject.keywordAuthorApatite-
dc.subject.keywordAuthorRadioactive ionic-corrosion-products-
dc.subject.keywordPlusCALCIUM-PHOSPHATE-
dc.subject.keywordPlusAQUEOUS-SOLUTIONS-
dc.subject.keywordPlusHEAVY-METALS-
dc.subject.keywordPlusNUCLEAR-REACTORS-
dc.subject.keywordPlusSTEEL SURFACES-
dc.subject.keywordPlusREMOVAL-
dc.subject.keywordPlusADSORPTION-
dc.subject.keywordPlusSORPTION-
dc.subject.keywordPlusWATER-
dc.subject.keywordPlusTEMPERATURE-
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