Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Renita Manurung"'
Publikováno v:
Case Studies in Chemical and Environmental Engineering, Vol 9, Iss , Pp 100543- (2024)
In this study, silica derived from palm leaf ash impregnated with various alkali sodium and potassium hydroxide to obtain sodium and potassium silicate was calcined, prepared, and employed as a solid base catalyst for the conversion of oils to biodie
Externí odkaz:
https://doaj.org/article/e5140a4b78b74a349b0c42f9d4ab30bc
Autor:
Renita Manurung, Rosdanelli Hasibuan, Fatimah Batubara, Handy Inarto, Alwi Gery Agustan Siregar, Auryn Saputra
Publikováno v:
Indonesian Journal of Chemistry, Vol 21, Iss 5, Pp 1111-1119 (2021)
In Indonesia, the composition of waste has gradually changed over time. To reduce expanded polystyrene (EPS) foam waste, we converted it into a heterogeneous acid catalyst, namely Polystyrene Sulfonic Acid (PSSA). The catalyst was then used in an est
Externí odkaz:
https://doaj.org/article/704af261f0914a839dcd128fc404db27
Publikováno v:
Indonesian Journal of Chemistry, Vol 21, Iss 1, Pp 88-96 (2020)
In this study, silica derived from corncobs impregnated with sodium hydroxide to obtain sodium silicate was calcined, prepared, and employed as a solid base catalyst for the conversion of oils to biodiesel. The catalyst was characterized by X-Ray Dif
Externí odkaz:
https://doaj.org/article/9a6abb7347744de19fde954779c70fef
Publikováno v:
International Journal of Science and Engineering, Vol 7, Iss 2, Pp 174-177 (2014)
Biodiesel usually synthesized by transesterification of triglyceride and alcohol by addition of acid or base catalyst so there is could produce a waste of chemical process. Alternative process is by using biocatalyst such as enzyme to synthesize biod
Externí odkaz:
https://doaj.org/article/81da4cc0e6e64897a52e8e56c001ed3e
Publikováno v:
International Journal of Science and Engineering, Vol 5, Iss 2, Pp 36-40 (2013)
Palm Fatty Acid Distillate (PFAD) can be used as raw material for synthesis polyester. The aim of this research is to synthesis of polyester and to determine the effect of concentration of catalyst on polymerization methyl ester PFAD. The esterificat
Externí odkaz:
https://doaj.org/article/e388f28146f3424d878682f49cc5379a
Publikováno v:
Mathematical Modelling of Engineering Problems. 10:334-339
Rice is the main food in Indonesia. Rice drying by using the traditional method directly under the sun light can require a long time to complete. The aim of this study is to investigate the appropriate kinetics modeling of rice with applied by fluidi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cb12a99a0de0f82e27cd482e3a94fee
https://doi.org/10.18280/mmep.100138
https://doi.org/10.18280/mmep.100138
Publikováno v:
Journal of Ecological Engineering. 23:228-234
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70e274c191400ecf4efc96f0771f43a0
https://doi.org/10.12911/22998993/153455
https://doi.org/10.12911/22998993/153455
Publikováno v:
Pelita Masyarakat. 4:33-42
This public service aims to turn lokal wisdom into a guide, an attitude and behaviour in interacting with nature, as well as transforming lokal wisdom to efforts in sustaining marine life and increasing the catch of traditional fishermen. The steps t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d9f5dbce33dfbb4f7d362ec41dda75b
https://doi.org/10.31289/pelitamasyarakat.v4i1.6954
https://doi.org/10.31289/pelitamasyarakat.v4i1.6954
Publikováno v:
Journal of Biomimetics, Biomaterials and Biomedical Engineering. 54:129-137
In this research, the bamboo leaf shows promise as an alternative raw material for silica production. This study investigated the performance of heterogeneous catalyst prepared from silica derived bamboo leaf ash after that impregnated with phosphori
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a93eaac32d41a7c27813128e21d9ee9
https://doi.org/10.4028/www.scientific.net/jbbbe.54.129
https://doi.org/10.4028/www.scientific.net/jbbbe.54.129
Publikováno v:
Journal of Applied Engineering Science. 20:63-70
Biofuels as environmentally friendly alternative fuels such as biogasoline, biokerosene and others are generally obtained through a cracking process and take place more effectively to attend a catalyst. In this study, the synthesis of ZnO/ZSM-5 aims
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::894bafb0e6efe1e1205782af47e8b618
https://doi.org/10.5937/jaes0-31312
https://doi.org/10.5937/jaes0-31312