Ditemukan 5 dokumen yang sesuai dengan query
Santi Kertati
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Pelarut organik umumnya digunakan oleh laboratorium kimia untuk keperluan analisis sampel dan merupakan salah satu bahaya kimia yang potensial yang dapat memajani pekerja di laboratorium itu. Dalam penelitian ini dilakukan penilaian risiko terhadap uap pelarut organik di suatu laboratorium pelumas berupa toluena, xilena, heksana, dan klorobenzen. Penilaian risiko masing – masing uap plearut tersebut diakukan berdasarkan penilaian tingkat bahaya, tingkat pajanan, dan tingkat risiko beserta kondisi pengendalian yang telah ada sehingga dapat diketahui karakterisasi risikonya. ...
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Depok: Fakultas Kesehatan Masyarakat Universitas Indonesia, 2016
T-pdf
UI - Tesis Membership Universitas Indonesia Library
Azizil Hamid
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Film bionanokomposit kitosan/Na-MMT/glutaraldehid (GLA) telah berhasil disintesis dengan metode solvent casting. Selain itu, uji aktivitas antimikroba dengan bakteri S. aureus dan Salmonella juga telah dilakukan. Terdapat tiga tahapan dalam melakukan sintesis. Tahapan pertama adalah Sintesis serbuk Bionanokompoit dengan metode presipitasi lalu tahapan selanjutnya serbuk bionanokomposit digunakan untuk pembuatan Film berbasis kitosan sehingga terbentuk Film Bionanokomposit Na-MMT/Kitosan/GLA. Selain itu juga dilakukan variasi penambahan material pada permbuatan serbuk bionanokomposit yaitu penambahan kitosan (0,5; 1; 2; ...
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Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2021
T-Pdf
UI - Tesis Membership Universitas Indonesia Library
Kamarza Mulia
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This research considers the application of Natural Deep Eutectic Solvents (NADES) as green solvents for the extraction of bioactive compounds, mainly ?-mangostin, from the pericarp of mangosteen (Garcinia mangostana L.). Extractions were carried out using NADES consisting of choline chloride, a quarternary ammonium salt, and four hydrogen bond donors: 1,2-propanediol, citric acid, glycerol, and glucose. The highest ?-mangostin extraction yield of 2.6 % (w/w) in dried pericarp was obtained using a mixture of choline chloride ...
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Depok: Faculty of Engineering, Universitas Indonesia, 2015
UI-IJTECH 6:7 (2015)
Artikel Jurnal Universitas Indonesia Library
Mohammad, Ali, editor
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Green solvents volume I and II provides a throughout overview of the different types of solvents and discusses their extensive applications in fields such as extraction, organic synthesis, biocatalytic processes, production of fine chemicals, removal of hydrogen sulphide, biochemical transformations, composite material, energy storage devices and polymers. ...
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Dordrecht, Netherlands: Springer, 2012
e20406111
eBooks Universitas Indonesia Library
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Volatile organic solvents are the normal media used in both research scale and industrial scale synthesis of organic chemicals. Their environmental impact is significant, however, and so the development of alternative reaction media has become of great interest. Developments in the use of water as a solvent for organic synthesis have reached the point where it could now be considered a viable solvent for many organic reactions. Organic Reactions in Water demonstrates the underlying principles ...
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Oxford, UK: Blackwell, 2007
e20395787
eBooks Universitas Indonesia Library
