Polarized behaviour of lead anode with 0,8 % silver in synthetic solution for electrollytic zinc precipitation in presence of depolarized substances
At density current of 400A/m2, average voltage of electrolytic cell in zinc industrial production is approx. 3,7V, making anode potential approx. 2,0V. In the process of electrolysis, almost 80% of electric energy is spent, so there is a great economic interest to reduce specific electric energy con...
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Engineering Society for Corrosion, Belgrade, Serbia
2017-03-01
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| Series: | Zaštita Materijala |
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| Online Access: | https://www.zastita-materijala.org/index.php/home/article/view/591 |
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| author | Miroslav Jokić Nikolić Mirjana Antonijević |
| author_facet | Miroslav Jokić Nikolić Mirjana Antonijević |
| author_sort | Miroslav Jokić |
| collection | DOAJ |
| description | At density current of 400A/m2, average voltage of electrolytic cell in zinc industrial production is approx. 3,7V, making anode potential approx. 2,0V. In the process of electrolysis, almost 80% of electric energy is spent, so there is a great economic interest to reduce specific electric energy consumption per zinc mass unit. The solution of this problem can be found in reducing anode potential (depolarization) by adding, in electrolyte, the substances that oxidize at potentials lower than the one of water oxidation. This paper examined the behaviour of anode potential by adding 1, 3, 5 and 8% (vol) methanol, i.e. 1, 3 and 5% (vol) formic acid in synthetic industrial electrolyte with 150g/dm3 H2SO4, as well as the influence of chloride presence in electrolyte on anode polarization effects. Lead anode alloyed with 0,8% silver was used, being a standard for zinc industrial production. Corrosion behavior of such an anode was examined in presence of methanol in synthetic industrial electrolyte with 150g/dm3 sulphuric acid. The results show that in the field of industrial relevant density current, depolarization effect while adding methanol exists, that the presence of methanol doesn't affect adversely on corrosion stability of anode, but the acceptable content of chloride in electrolyte cancels the effects of depolarization in the presence of methanol. The presence of formic acid in synthetic electrolyte doesn't show clear and uniform depolarization effects. |
| format | Article |
| id | doaj-art-1ad9395378564e9bab8e237dc0b96fc3 |
| institution | Kabale University |
| issn | 0351-9465 2466-2585 |
| language | English |
| publishDate | 2017-03-01 |
| publisher | Engineering Society for Corrosion, Belgrade, Serbia |
| record_format | Article |
| series | Zaštita Materijala |
| spelling | doaj-art-1ad9395378564e9bab8e237dc0b96fc32024-12-09T16:53:09ZengEngineering Society for Corrosion, Belgrade, SerbiaZaštita Materijala0351-94652466-25852017-03-01581657910.5937/ZasMat1701065S590Polarized behaviour of lead anode with 0,8 % silver in synthetic solution for electrollytic zinc precipitation in presence of depolarized substancesMiroslav Jokić0Nikolić Mirjana Antonijević1University of East Sarajevo, Faculty of Technology, Zvornik, Republic of Srpska, B&HVisoka medicinska I poslovno-tehnološka škola strukovnih studija, ŠabacAt density current of 400A/m2, average voltage of electrolytic cell in zinc industrial production is approx. 3,7V, making anode potential approx. 2,0V. In the process of electrolysis, almost 80% of electric energy is spent, so there is a great economic interest to reduce specific electric energy consumption per zinc mass unit. The solution of this problem can be found in reducing anode potential (depolarization) by adding, in electrolyte, the substances that oxidize at potentials lower than the one of water oxidation. This paper examined the behaviour of anode potential by adding 1, 3, 5 and 8% (vol) methanol, i.e. 1, 3 and 5% (vol) formic acid in synthetic industrial electrolyte with 150g/dm3 H2SO4, as well as the influence of chloride presence in electrolyte on anode polarization effects. Lead anode alloyed with 0,8% silver was used, being a standard for zinc industrial production. Corrosion behavior of such an anode was examined in presence of methanol in synthetic industrial electrolyte with 150g/dm3 sulphuric acid. The results show that in the field of industrial relevant density current, depolarization effect while adding methanol exists, that the presence of methanol doesn't affect adversely on corrosion stability of anode, but the acceptable content of chloride in electrolyte cancels the effects of depolarization in the presence of methanol. The presence of formic acid in synthetic electrolyte doesn't show clear and uniform depolarization effects.https://www.zastita-materijala.org/index.php/home/article/view/591zinc electrolysisanode potentialmethanolformic acidchlorides |
| spellingShingle | Miroslav Jokić Nikolić Mirjana Antonijević Polarized behaviour of lead anode with 0,8 % silver in synthetic solution for electrollytic zinc precipitation in presence of depolarized substances Zaštita Materijala zinc electrolysis anode potential methanol formic acid chlorides |
| title | Polarized behaviour of lead anode with 0,8 % silver in synthetic solution for electrollytic zinc precipitation in presence of depolarized substances |
| title_full | Polarized behaviour of lead anode with 0,8 % silver in synthetic solution for electrollytic zinc precipitation in presence of depolarized substances |
| title_fullStr | Polarized behaviour of lead anode with 0,8 % silver in synthetic solution for electrollytic zinc precipitation in presence of depolarized substances |
| title_full_unstemmed | Polarized behaviour of lead anode with 0,8 % silver in synthetic solution for electrollytic zinc precipitation in presence of depolarized substances |
| title_short | Polarized behaviour of lead anode with 0,8 % silver in synthetic solution for electrollytic zinc precipitation in presence of depolarized substances |
| title_sort | polarized behaviour of lead anode with 0 8 silver in synthetic solution for electrollytic zinc precipitation in presence of depolarized substances |
| topic | zinc electrolysis anode potential methanol formic acid chlorides |
| url | https://www.zastita-materijala.org/index.php/home/article/view/591 |
| work_keys_str_mv | AT miroslavjokic polarizedbehaviourofleadanodewith08silverinsyntheticsolutionforelectrollyticzincprecipitationinpresenceofdepolarizedsubstances AT nikolicmirjanaantonijevic polarizedbehaviourofleadanodewith08silverinsyntheticsolutionforelectrollyticzincprecipitationinpresenceofdepolarizedsubstances |