کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
643460 884374 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of total hardness on the coagulation performance of aluminum salts with different Al species
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
The effect of total hardness on the coagulation performance of aluminum salts with different Al species
چکیده انگلیسی

In order to investigate the effect of total hardness on coagulation efficiencies of Al species, different Al coagulants – conventional Al salt (AlCl3), polyaluminum chloride (PAC-1) and the purified polyaluminum chloride (PAC-2) – were used to treat humic acid (HA) and kaoline clay in this study. The coagulation efficiency and coagulation kinetics were investigated by treating synthetic water with different total hardness. The results suggest that total hardness can influence the coagulation efficiencies of aluminum salts. The coagulation efficiency of AlCl3, PAC-1 and PAC-2 increased when total hardness increased. The investigations on coagulation kinetics showed that total hardness influences the flocs aggregation in the coagulation process of aluminum salts. Higher total hardness results in longer reaction time in all cases. The maximum floc size of AlCl3, PAC-1 and PAC-2 occurs when total hardness reaches 8, 4, and 1 mmol L−1, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 66, Issue 3, 7 May 2009, Pages 457–462
نویسندگان
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