کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
641235 1456990 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Recovery of nickel and water from nickel electroplating wastewater by electrodialysis
ترجمه فارسی عنوان
بازیابی نیکل و آب از فاضلاب آبکاری نیکل توسط الکترو دیالیز
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی


• Electrodialysis was applied to treat nickel plating effluent, targeting water reuse.
• Concentrated solution was used to reinforce the Ni bath.
• ED diluted product was used as rinsewater.
• Brass pieces were plated and rinsed with solutions recovered by ED.
• The quality of the products showed the high quality of the solutions.

Galvanic processes are one of the main activities contributing to metal discharges into the environment. The wastewater generated contains a high load of salts and metals that should be treated. In this work, the electrodialysis (ED) treatment was studied in order to concentrate and extract nickel (Ni) and its salts of effluents from the bright nickel electroplating process, aiming at water and concentrated solution recovery for reuse, and saving industrial and environmental resources. A laboratory-scale ED system was applied in the treatment of a synthetic effluent based on industrial bath composition. Properties of recovered water and nickel-concentrated solution have also been analyzed to verify their quality: Both solutions were used in the nickel-plating process in order to analyze their effects on the properties of electroplated pieces. It was found that ED treatment generates a very low conductivity solution, enabling its reuse as rinsewater, and a concentrated solution, which can be fed to the bath to recover volumes lost by evaporation and drag out during the nickel-electroplating process. The reuse does not cause any harm to the quality of plated pieces with regard to the visual aspects and corrosion resistance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 129, 29 May 2014, Pages 106–112
نویسندگان
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