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Synthesis of Magnetite Nanocrystal Used Urea as Cr(VI) AdsorbentSintesis Nanokristal Magnetit Menggunakan Urea sebagai Penjerap Cr(VI)
(2010)
The study was to synthesize and characterize magnetite nanocrystal. Magnetite powder was synthesized using hydrothermal method from FeSO4 as precursor and sodium hydroxide and urea as the base sources. Characterization of ...
Transesterifrication Optimization of Sterculia foetida Biodiesel and Its Quality During StorageOptimisasi Transesterifikasi Biodiesel Kepuh dan Analisis Mutunya Selama Penyimpanan
(2010)
The availability of natural oil is decreasing rapidly. Therefore, alternative fuel is needed. Biodiesel is one of alternative fuel which can replace diesel fuel. Kepuh (Sterculia foetida) oil can be converted to biodiesel ...
Thin Layer Chromatography Fingerprints of Leaves of Three Guava TypesSidik Jari Kromatografi Lapis Tipis dari Daun Tiga Jenis Jambu Biji
(2011)
Guava leaf contains chemical compounds having antioxidant activity. Quality control methods are needed to maintain the quality of raw materials. The objective of this research is to find the chromatographic fingerprints ...
Adsorpsi ion Cr(III) dan Cr(VI) menggunakan bentonit alam termodifikasi oksida besi
(2012)
Speciation of trivalent and hexavalent chromiums is important to do because both have very different characteristics. Hexavalent chromium is toxic meanwhile trivalent chromium is needed in metabolism. The aim of this study ...
Sintesis Polimer Superabsorben Onggok Tapioka-Akrilamida: Pengaruh Konsentrasi Monomer dan inisiatorSynthesis of Superabsorbent Polymer Obtained from Cassava Waste Pulp-Graft-Acrylamide: Effect of Monomer and Initiator Concentration.
(2012)
Cassava waste pulp (CP) is a solid waste product from tapioca processing industry. This waste still contains high carbohydrates, so it can be modified into superabsorbent polymers (SAP) through grafting and crosslinking ...
Zeolit Alam Teraktivasi Basa untuk Pemurnian BioetanolBased-activated natural zeolite for bioethanol purification
(2012)
Utilization of bioethanol in mixing with fossil fuel greatly depends on its purity. To get high purity, adsorptive separation method with zeolite as adsorbent had been developed. Both natural and synthetic zeolite could ...
Pencirian Elektrode Membran Termodifikasi Zeolit untuk Pengukuran Kromium(VI)Characterization of Zeolite-Modified Membrane Electrode for Measurement of Chromium(VI).
(2012)
This research success fully made zeolite-modified membrane electrodes for measurement of Cr(VI). Zeolites used were mordenit type with particle size of 414.3 nm. Ion selective electrodes (ISE) were made with membrane ...
Uricase Kinetic Determination of Bacillus subtilis, B. megaterium, and B. cereus CellsPenentuan kinetika urikase dari sel Bacillus subtilis, B. megaterium, dan B. cereus
(2010)
Uric acid concentration could be determined based on the oxidation of uric acid into alantoin with the presence of uricase. Determination is needed to diagnose the occurrence of kidney disease in gout patients. This research ...
Fraksionasi Ekstrak Kemedangan Gaharu Aquilaria microcarpa Hasil Inokulasi Berpotensi Antioksidan
(2014)
Aquilaria microcarpa is an agarwood producing tree which is potential as an antioxidant resource. The objectives of this research were to determine the most active antioxidant fraction in the inoculated kemedangan A. ...
Isolasi dan Identifikasi Senyawa Alkaloid dalam Ekstrak Daun Sirsak Hutan (Annona glabra)
(2014)
Sirsak hutan (Annona glabra), is a plant that has been traditionally used as medicine. In previous studies, ethanol extract of A. glabra leaves has been reported to be toxic against brine shrimp and zebrafish embryo. The ...