?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Waste+cooking+oil+valorisation+into+biodiesel+using+supercritical+methanolysis%3A+Critical+assessment+on+the+effect+of+water+content&rft.creator=Umar%2C+Yusuf&rft.creator=Aboelazayem%2C+Omar&rft.creator=Echresh%2C+Zahra&rft.creator=Gadalla%2C+Mamdouh&rft.creator=Saha%2C+Basudeb&rft.description=In+this+work%2C+valorisation+of+high+acid+value+waste+cooking+oil+(WCO)+into+biodiesel+has+been+assessed+using%0D%0Asupercritical+methanolysis.+The+effect+of+the+water+content+in+the+feedstock+has+been+critically+investigated.+Using+supercritical%0D%0Amethanolysis%2C+the+higher+water+content+in+the+feedstock+enhanced+the+hydrolysis+of+triglycerides+to+free+fatty+acids+(FFAs)+and%0D%0Athe+esterification+of+FFAs+into+fatty+acid+methyl+esters+(FAMEs)+has+been+reported.+The+effect+of+water+content+has+been%0D%0Ainvestigated+by+adding+different+volumes+of+water+to+the+feedstock+prior+to+the+reaction.+Response+Surface+Methodology+(RSM)%0D%0Ausing+Central+Composite+Design+(CCD)+has+been+used+to+design+the+experiments+and+to+optimise+the+experimental+variables.%0D%0AFive+controllable+reaction+parameters+have+been+studied+including+methanol+to+oil+(M%3AO)+molar+ratio%2C+reaction+temperature%2C%0D%0Areaction+pressure%2C+reaction+time+and+water+content.+Biodiesel+yield+has+been+chosen+as+reaction+response+for+the+experimental%0D%0Aruns.+The+linear+effect+of+reaction+parameters+and+their+interactions+on+biodiesel+yield+has+been+analysed.+It+has+been+observed%0D%0Athat+increasing+the+water+content+of+the+feedstock+decreases+the+yield+of+biodiesel+at+specific+conditions.+However%2C+due+to+the%0D%0Ahigh+interactive+effect+between+water+content+and+reaction+time%2C+it+has+been+observed+increasing+effect+at+longer+reaction+time.%0D%0AA+quadratic+model+has+been+developed+using+the+reported+experimental+results+representing+biodiesel+yield+function+in+all+of%0D%0Athe+experimental+parameters.+The+adequacy+of+the+predicted+model+has+been+checked+statistically+using+analysis+of+variance%0D%0A(ANOVA).+Numerical+optimisation+has+been+applied+to+identify+the+optimal+reaction+conditions+for+maximum+production+of%0D%0Abiodiesel.+The+developed+optimal+condition+has+reported+99.8%25+biodiesel+yield+at+10%3A1+M%3AO+molar+ratio%2C+245+oC%2C+125+bar%2C%0D%0A6+vol%25+of+water+content+within+19+min.&rft.subject=Biodiesel%2C+Organic+waste%2C+Modelling%2C+Transesterification%2C+Esterification&rft.publisher=EUBCE+(European+Biomass+Conference+and+Exhibition)&rft.date=2019-05-30&rft.type=Proceedings+paper&rft.language=eng&rft.source=+++++In%3A++Proceedings+of+the+27th+European+Biomass+Conference+and+Exhibition.++++EUBCE+(European+Biomass+Conference+and+Exhibition)%3A+Lisbon%2C+Portugal.+(2019)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10150864%2F1%2F3DV.6.3_Paper_Zahra.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10150864%2F&rft.rights=open