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There are urgently needed to support a governmenaental programme in the developing of non oil and gas industries in accordance with increasing of National deposits, i.e., mining ares such as white plumbum. An investigation and treating the material would be necessary to increasing efficiency of the...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/12278 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | There are urgently needed to support a governmenaental programme in the developing of non oil and gas industries in accordance with increasing of National deposits, i.e., mining ares such as white plumbum. An investigation and treating the material would be necessary to increasing efficiency of the mentioned mineral resources. Nowaday, some experiments to investigate the differentiation effect of several treatments are eventually foundun homogenous of available experiment unit, and therefore it is important to conduct blockaging experiment as well as the block units will become homogen. The one important effort to determine analysis result are converting the material inform readily analysable of matters. In the experimental has been designed a fully randomised of factorial schemas by 2x4x3x7 with 3 (three) repeating times. The solvents of HCl and HNO3 was applied by concentration values of 1%, 3%, 6% and 12% where as a beaker glass, cold finger and reflux method are used as dilution apparatus. Heating proses was carried out by varying time of 0, 5, 10, 15, 20, 25 and 30 minutes with total volume 60 ml for each. Acid-base titration is used to determine the concentration of HCl treated material, and spectrophotometric measurement appointed to HNO3 treated material at suitable wave-length of 425 nm. The treatment methods indicate the significant results as the following: * By neglecting a heating time the best results would be achicved with HCl solvent at concentration values of 1% and 12%, by using a beaker glass and cold finger as dilution apparatus; * By neglecting a dilution apparatus the best results would be achieved with HNO3 solvent at concentration values of 1% and 12%; by heating time of 0 and 5 minutes; * By neglecting a concentration value the best results would be achieved with HNO3 solvent at heating time of 15 and 20 minutes, respectively; * By neglecting the kind of solvents the best results would be achieved by using a beaker glass and cold finger apparatus at concentration values of 1% and 12% ; by heating time of 5 and 20 minutes, respratively. <br />
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