کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
623313 1455338 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Interaction mechanisms of humic acid combined with calcium ions on membrane fouling at different conditions in an ultrafiltration system
ترجمه فارسی عنوان
مکانیزم های تعامل اسید هومیک در ترکیب با یون های کلسیم بر روی غشاء در شرایط مختلف در یک سیستم اولترافیلتراسیون
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی
The Extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) approach was used to predict the mechanisms regarding the influence of humic acid together with calcium ions on membrane fouling in an ultrafiltration (UF) system. The polymeric UF membranes composed of polyvinylchloride (PVC) were selected to investigate membrane fouling. The results indicated that membrane fouling was aggravated when the total interaction energy caused by humic acid combined with calcium ions decreased. Calcium ions aggravated membrane fouling, compared with water samples without calcium ions. Increasing concentrations of calcium ions resulted in greater membrane fouling due to their chelation with humic acid. Increased pH influenced the interaction between calcium ions and humic acid, resulting in an increase in the total interaction energy, which reduced membrane fouling. Prechlorination reduced the interaction between calcium ions and humic acid, and resulted in an increase in the total interaction energy of the water sample, indicating that prechlorination may reduce membrane fouling, due to characteristic changes in organic matter.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 357, 2 February 2015, Pages 26-35
نویسندگان
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