%0 Thesis %9 Diploma %A Djayasinga, Rodhiansyah %A setiawan, Andi %A Purnomo, Agus %A Amien, Ahmad Zakaria %A Poltekkes Tanjungkarang, %A Jurusan Analis Kesehatan, %A Prodi D3 Teknologi Laboratorium Medis, %B Prodi D3 Teknologi Laboratorium Medis %D 2022 %F repo:4232 %I Poltekkes Tanjungkarang %T TURNITIN_Utilization of Breed Chicken Eggshells for Biodiesel Preparation from Waste CookingOil %U http://repository.poltekkes-tjk.ac.id/id/eprint/4232/ %X Chicken eggshell waste is a promising source of CaO which can be converted intoheterogeneous catalyst materials.The purpose of this study was to utilize CaO heterogeneous catalyst derived from breed chicken eggshell toproducebiodieselfromwastecookingoilthroughthetransesterification process.A totalof4gofcatalystmaterial wasmixedwith200gofwastecookingoiland60gofmethanol,and then the mixture was stirredataspeedof700rpmfor6hat60±40C.Theproduced biodieselwasanalyzedusingGC-MStoelucidate thevariousmethylestercompounds.Theproduced biodieselwasfoundtohaveadensityof855kg/m3, viscosity of 3.74 mm2/s (cSt), and flash point of 135 0C. Based on these results, it can beconcluded that breed chicken eggshells are potential sources for the preparation of CaO catalyst material to producebiodieselfromwastecookingoil.Thisfindingisveryusefulforfurtheropti-mizationofmasscatalystsheterogeneousCaOfrombreed chicken eggshellsincludingthecommercial productionofbiodiesel.Keywordsbiodiesel,CaOheterogeneouscatalyst,transesterification,wastecookingoil, breed chicken eggshell