کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11012946 | 1797856 | 2019 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sewage sludge can provide a washing agent for remediation of soil from a metallurgical area
ترجمه فارسی عنوان
لجن فاضلاب می تواند یک عامل شستشو برای ترمیم خاک از یک منطقه متالورژیکی فراهم کند
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کلمات کلیدی
فلزات سنگین، شستشو خاک، ماده آلی حل شده، شاخص پارتیشن کاهش یافته است
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
چکیده انگلیسی
The search for washing agents recovered from waste is a new trend in the washing of soils contaminated with heavy metals (HMs). In the present study, dissolved organic matter (DOM) recovered from sewage sludge was used to remediate soil that originated from a metallurgical area and was contaminated with Cu (8109â¯mgâ¯kgâ1), Pb (1473â¯mgâ¯kgâ1) and Zn (531â¯mgâ¯kgâ1). At pHâ¯4 and a washing agent concentration of 4â¯gâ¯TOCâ¯dmâ3, HMs removal proceeded according to pseudo-second-order kinetics with a relatively short equilibrium time (120â¯min). DOM was especially effective for removing Cu; in double washing, Cu removal was 5854â¯mgâ¯kgâ1 (process effectiveness 72%), Zn removal was 258â¯mgâ¯kgâ1 (process effectiveness 50.5%), but Pb removal was low (131â¯mgâ¯kgâ1; 8.7%). DOM effectively removed metals from the exchangeable and acid soluble fraction. Based on the reduced partition index (IR), the intensity of Cu and Zn bonding in soil washed with DOM was twice as high as that in unwashed soil. Thus, DOM can serve as an effective washing agent for remediating soils contaminated with Cu and Zn, but it is not useful for removing Pb.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: CATENA - Volume 173, February 2019, Pages 22-28
Journal: CATENA - Volume 173, February 2019, Pages 22-28
نویسندگان
Dorota Kulikowska, Barbara K. Klik, Zygmunt M. Gusiatin, RafaÅ JabÅoÅski,