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7.672  Articles
1 of 768 pages  |  10  records  |  more records»
Mines in Bintan were producing bauxite for many years. The production process of bauxite to alumina produced much red mud. From X-ray Fluorescence (XRF), alumina content on Bintan’s red mud was 28.87 wt.%. This research was studying on the extraction alum... see more

Alumina extraction from red mud has been investigated by magnetic separation with three-step treatment. First, the addition of red mud with Na2CO3 (12 wt%) and heated at 110 °C for 4 h. The second step was carbon reduction using coal with mass ratio of (r... see more

Porous aerogel of titania-alumina were prepared by hydrolysis of metal alkoxides and supercritical extraction of the solvent.  Monolithic wet-gel of 0.2TiO2-0.8Al2O3, prepared by hydrolysis of metal alkoxides in alcoholic solutions, and the solvent i... see more

The synthesis, phase structure and hardness analysis of cordierite ceramic has been done with addition of alumina 0, 20, 25, and 30wt%. Magnesium and alumina from Sigma-Aldrich has been used as raw materials while the silica was obtained from extraction o... see more

Purification of 99mTc from 99Mo activation using acidic alumina column chromatography system from MEK (Methyl Ethyl Keton) extraction has been carried out through cooperation between PTRR - BATAN, Chiyoda and JAEA Japan. This method has a limitation that ... see more

Unjuk Kerja Generator Radioistop 99Mo/99mTc dengan radioaktivitas 99Mo 600 dan 800 mCi Berbasis PZC. Radioisotop 99mTc mempunyai umur paro pendek (6 jam), pemancar sinar gamma mono-energik (140 KeV), mudah membentuk senyawa komplek dengan berbagai kit, da... see more

To lower the sulphur content below 500 ppm and to increase the quality of bitumen derived heavy oil, a combination of hydrotreating followed by oxidative desulfurization (ODS) and oxidative denitrogenation (ODN) is proposed in this work. NiMo/γ-Al2O... see more

The textile industry uses synthetic dyes because they are cheaper and easier to obtain. Moreover, the color availability is guaranteed and more varied. However, these synthetic dyes have a negative impact on health and the environment. The natural dye fro... see more

The textile industry uses synthetic dyes because they are cheaper and easier to obtain. Moreover, the color availability is guaranteed and more varied. However, these synthetic dyes have a negative impact on health and the environment. The natural dye fro... see more

1 of 768 pages  |  10  records  |  more records»