کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7007651 1455251 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation of the hydrogen evolution phenomenon on CaCO3 precipitation in artificial seawater
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Investigation of the hydrogen evolution phenomenon on CaCO3 precipitation in artificial seawater
چکیده انگلیسی
Precipitation of CaCO3, as the most important part of scales, causes a serious problem in industrial equipment such as pipelines and desalination plants. The effect of the hydrogen evolution phenomenon on the electrochemical precipitation was studied through varying different factors including cathodic potential (CP), bicarbonate concentration, and solution temperature. The application of CP from −0.8 VSCE to −1.2 VSCE, an increase in bicarbonate concentration and temperature elevation from 25 °C to 45 °C led to the increase of scaling time (ts) and residual current density (ir). In all cases, it was indisputably found that the hydrogen evolution phenomenon had a predominant effect on the calcium carbonate precipitation. The surface analyses by means of scanning electron microscopy (SEM) showed formation of crystals in two defined forms of calcite and aragonite. Moreover, the energy dispersive spectroscopy (EDS) technique confirmed the formation of CaCO3 crystals.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 444, 15 October 2018, Pages 142-150
نویسندگان
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