کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7043919 | 1456923 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of titanium tetrachloride and polytitanium tetrachloride to remove phosphorus from wastewater
ترجمه فارسی عنوان
ارزیابی تترا کلرید تیتانیوم و پلیتیتانیم تتراکلرید برای حذف فسفر از فاضلاب
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
چکیده انگلیسی
Coagulation of titanium tetrachloride (TiCl4) and polytitanium tetrachloride (PTC) was studied at various conditions in treating wastewater that contained phosphorus (P). Jar-test experiments were performed at various chemical doses (0.02-0.49â¯mM), alkalinities (50â¯â¤â¯ATâ¯â¤â¯150â¯mg CaCO3/L of NaHCO3), pH levels (3.0-8.5), and OH/Ti ratio (0.3â¯â¤â¯Bâ¯â¤â¯3.0) to determine the conditions at which P (2â¯mg/L) removal was most efficient. The TiCl4 concentration ([TiCl4]) required to achieve 98-99% P removal was 0.25â¯mM at 50â¯mg CaCO3/L, 0.31â¯mM at 100â¯mg CaCO3/L, and 0.49â¯mM at 150â¯mg CaCO3/L. Response surface analysis predicted that P removal would reach 100% at controlled pHâ¯=â¯3.5 with minimum [TiCl4]â¯=â¯0.21â¯mM. PTC removed P most effectively at Bâ¯=â¯0.3, and the optimal dose at Bâ¯=â¯0.3 was 0.27â¯mM. Laboratory results and a pilot experiment will help to optimize use of Ti-based coagulants to remediate wastewater that contains P.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 197, 31 May 2018, Pages 197-201
Journal: Separation and Purification Technology - Volume 197, 31 May 2018, Pages 197-201
نویسندگان
Kyeong-Jun Jeon, Johng-Hwa Ahn,