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Journal of Mathematical and Fundamental Sciences
Published by Institut Teknologi Bandung
ISSN : 23375760     EISSN : 23385510     DOI : https://doi.org/10.5614/j.math.fund.sci.
Core Subject : Science, Education,
Astronomy Chemistry Earth & Planetary Sciences Mathematics Physics
Journal of Mathematical and Fundamental Sciences welcomes full research articles in the area of Mathematics and Natural Sciences from the following subject areas: Astronomy, Chemistry, Earth Sciences (Geodesy, Geology, Geophysics, Oceanography, Meteorology), Life Sciences (Agriculture, Biochemistry, Biology, Health, Medical, Pharmacy), Mathematics, Physics, and Statistics.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
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Search results for , issue "Vol. 21 No. 2/3 (1988)" : 1 Documents clear
Analisis Kronopotensiometri Arus Balik pada Interaksi Elektrokimia Platina-Xantat Arief Sudarsono
Journal of Mathematical and Fundamental Sciences Vol. 21 No. 2/3 (1988)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract

The electrochemical interaction of xanthate ions commonly used as a sulphide minerals flotation collector with platinum electrodes is analyzed by using chronopotentiometric methods. Currents were applied to a platinum electrode immersed in xanthate free and xanthate containing borate solutions. The formation of dixanthogen from xanthate ions oxidation was observed at the application of positive currents. Its reduction is observed at negative currents. The equilibrium of xanthate-dixanthogen couple is applied current dependent. At low applied currents, the time required to reach the equilibrium is longer than the one of high applied currents. Interaksie letrokimia antara xantat sebagai reagen flotasi dengan logam platina dipelajari dengan cara pemuatan berganti. Pemuatan dilakukan dengan memberikan arus pada elektroda platina yang tercelup dalam larutan xantat dengan berbagai konsentrasi. Oksidasi ion xantat menjadi dixantogen teramati beberapa saat setelah pemberian arus positif dan reduksi dixantogen terjadi beberapa saat setelah pemberian arus negatif. Tercapainya kesetimbangan antara ion xantat dengan dixantogen sangat bergantung pada kuat arus yang diberikan. Pada kuat arus yang rendah diperlukan waktu yang relatif lebih lama untuk mencapai kesetimbangan.

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