کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8011986 1516934 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cascade sulfidation and separation of copper and arsenic from acidic wastewater via gas-liquid reaction
ترجمه فارسی عنوان
سولفیداسیون و جداسازی مس و آرسنیک از فاضلاب اسیدی از طریق واکنش گاز مایع
کلمات کلیدی
فاضلاب اسیدی، فلز مس، آرسنیک، سولفیداسیون آبشار، جدایی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
Copper and arsenic in acidic wastewater were separated by cascade sulfidation followed by replacement of arsenic in the precipitates by copper in the solution which was realized by recycling precipitates obtained in the first stage into the initial solution. The effects of reaction time, temperature and H2S dosage on copper and arsenic removal efficiencies as well as the effects of solid-to-liquid ratio, time and temperature on the replacement of arsenic by copper were investigated. With 20 mmol/L H2S at 50 °C within 0.5 min, more than 80% copper and nearly 20% arsenic were precipitated. The separation efficiencies of copper and arsenic were higher than 99% by the replacement reaction between arsenic and copper ions when solid-to-liquid ratio was more than 10% at 20 °C within 10 min. CuS was the main phases in precipitate in which copper content was 63.38% in mass fraction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 27, Issue 4, April 2017, Pages 925-931
نویسندگان
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