کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7475222 1485192 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Exploratory study on modification of sludge-based activated carbon for nutrient removal from stormwater runoff
ترجمه فارسی عنوان
بررسی اکتشافی در اصلاح کربن فعال بر پایه لجن برای حذف مواد مغذی از رواناب است
کلمات کلیدی
جذب، حذف مواد مغذی، سوراخ کننده بر پایه لجن، مدیریت طوفان،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Nutrients (P, N) in stormwater runoff are a major cause of eutrophication and algal blooms. A promising solution to this problem is to amend the rain garden growing medium (RGGM) with sewage sludge-based activated carbon (SBAC). To optimize the SBAC production process, different metals, pyrolysis conditions (temperature, heating time, carrier gas), and post-treatments were explored. When pyrolyzed at 400 °C for two hours, Zn-activated SBAC removed up to 41% of PO4-P (initial concentration of 1 mg/L) and 72% of NO3-N (initial concentration of 2 mg/L), at a dose of 1 g sorbent/L of nutrient-spiked distilled water. When the same dosage was applied to stormwater leachate made from RGGM and spiked with nutrients, the removal efficiencies were reduced to 20% for PO4-P and 38% for NO3-N. These reductions were probably caused by competition from other leachate components. Increasing the dosage to 3 g/L leachate improved PO4-P removal to 31% and NO3-N to 72%, while also resulting in the removal of 46% of total organic carbon. The major energy cost of producing such sorbents is estimated to be ∼$0.76 CAD/kg SBAC.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Management - Volume 226, 15 November 2018, Pages 37-45
نویسندگان
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