WaterEnvironment & WaterEnvironment & 40In the FutureAfter GraduationRyotaroKiyonoAfter GraduationIn the FutureProfessorBS from Hokkaido Univ. in 1983, MS from Univ. of California, Davis in 1995. Specialized in hydrologic engineering and water resources. Appointed current position in 2016.AssociateProfessorPolymer Chemistry, Polymer MaterialsPreparation of novel polymer membranes, Analysis of transport mechanism across membranes. Civil EngineeringCivil EngineeringWater-relateddisastersarecommonproblemsworldwide.YoshitaniLaboratoryhasbeenconductingresearchontorrentialrainobservationbyRADAR,numericalmodelingtopredictandevaluatedamagemitigationmeasures,andevacuationofpublic,incooperationwithriveradministrators,companies,andexpertsfromotherorganizationssincetheChikumaRiverdisasterin2019.Studentschooseindividualtopicsoftheirinterestandconducttheirownresearch.Junichi YoshitaniMembraneseparationtechnologycanbefoundinvariousindustrialareas.Thetechnologyhasbecomeincreasinglyimportantanditrequiresnewmaterialsandmembranes.Inourlaboratorynovelmembranes(hollowfiberion-exchangemembranes,compositemembranesofpolydimethylsiloxanewithcarbonnanofiber,…)havebeenpreparedusingvariouspolymersandfunctionalmaterials.Transportpropertiesacrossthemembranesareinvestigated.YoshitaniLaboratoryconductsresearchonfloodriskassessmentandreduction,riverwaterenvironment,policycomparisonswithCalifornia,andraisingpublicawarenessofpre-floodevacuationthroughfunparent-childevents.Throughtheseefforts,weaimtomakeNagano'swaterenvironmentmoreprosperousandresilienttowater-relateddamage.Somegraduatesfindpositioninthepublicsectorsofcivilengineeringandconstructionandconsultantcompanies,andothersgoontograduateschool.Heprovidesgraduatestudentswithacollaborativeworkenvironmentwithpublicagenciesandbusinessesoncurrentwaterissues.Somescientistssaymembranetechnologyplaysacentralroleinourdailylife.Today,membraneprocessesareusedinawiderangeofindustrialapplications:desalinationofseawater,purificationofmaterials,fuelcell,gasseparation,etc.Thenumberofsuchapplicationsisstillgrowingandenvironmentalapplicationsforcleantechnologyareverypromising.Manyundergraduatestudentsadvancetoourgraduateschool.Afterthegraduation,theyworkatcompaniesthatdealwithpolymermaterialsormembraneseparationtechnology.foodandbeverage,Annual Radio Craft Workshop held in cooperation with Japan Radio Co. Ltd. Children enjoy assembling small radios and learn how to make family’s evacuation plans in case of flooding.Small-size weather radar installed on the roof of an engineering campus building to monitor and predict localized heavy rainfall so-called “guerilla rains.”The apparatus for membrane separation experiments and a result. Pure liquid was obtained by the separation.Cross-sectional images of hollow fiber ion-exchange polymer membranes prepared in laboratory. Promote Flood Damage Mitigation through Managing Best Available TechnologiesSeparation Technology using Polymer Membranes
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