کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
221599 464260 2016 8 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Phosphorus release from coprecipitants formed during orthophosphate removal with Fe(III) salt coagulation: Effects of pH, Eh, temperature and aging time
ترجمه فارسی عنوان
آزادسازی فسفر از پروتئین های تشکیل دهنده در طی حذف اورتروفسفات با اکسیداسیون نمک Fe (III): اثرات pH، Eh، دما و زمان پیری
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
سفارش ترجمه تخصصی
با تضمین قیمت و کیفیت
خدمات تولید محتوا

این مقاله ISI می تواند منبع ارزشمندی برای تولید محتوا باشد.

  • تولید محتوا برای سایت و وبلاگ
  • تولید محتوا برای کتاب
  • تولید محتوا برای نشریات و روزنامه ها
  • و...

پایگاه «دانشیاری» آمادگی دارد با همکاری مجموعه «شهر محتوا» با استفاده از این مقاله علمی، برای شما به زبان فارسی، تولید محتوا نماید.

تولید محتوا
با 10 درصد تخفیف ویژه دانشیاری
کلمات کلیدی
فسفر؛ رهایی؛ نمک فریت؛ انعقاد؛ Coprecipitants
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Solution pH affected P release more obviously than Fe release.
• Proper aging benefited for inhibiting P release under oxidizing conditions.
• Fe and P release of reducing conditions were above those of oxidizing conditions.
• Linear correlation between Fe and P release was good under reducing conditions.
• Surface properties of coprecipitants were analyzed.

Although Fe(III) salts coagulation has been widely used for phosphate removal, knowledge about the phosphorus release from the formed Fe-P coprecipitants is limited. This paper investigated the effects of Fe/P molar ratio, aging time, pH, Eh, and temperature on the release of phosphorus and iron in coprecipitants using batch tests. At neutral pH, three kinds of coprecipitants were prepared: unaged FP-1 (Fe/P = 3), FP-2 (Fe/P = 6) and aged FP-2 for 3 months (Fe/P = 6). Results showed that solution pH (4–10) affected the release of phosphorus obviously while its effect on Fe release was slight. Alkaline condition (pH 10) resulted in the greatest release rate of phosphorus due to the desorption of adsorbed phosphorus mainly via ligand exchange, which finally reached about 10% after 48 h. Under near-neutral pH and oxidizing conditions (Eh > 200 mV), P release rates were below 10% and proper aging was favorable for inhibiting P release. Under reducing conditions, the release rates of iron and phosphorus were higher than those under oxidizing conditions. As the Eh ranged from −261 mV to −194 mV, remarkable P release rates (> 15%) began to occur after 48 h. Higher Fe/P molar ratio benefited to control the P release. With the rising of water temperature from 10 °C to 40 °C, P release rates increased. Under reducing conditions and at different temperatures, good linear correlation between Fe and P release hinted the predominant role of Fe for P release. Surface property analyses of coprecipitants including XRD, zeta potentials and FTIR were further conducted.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 4, Issue 3, September 2016, Pages 3322–3329
نویسندگان
, , , , ,
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
سفارش ترجمه تخصصی
با تضمین قیمت و کیفیت