کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6365104 1623071 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Eutrophication management in surface waters using lanthanum modified bentonite: A review
ترجمه فارسی عنوان
مدیریت ائوتروفیکی در آبهای سطحی با استفاده از بنتونیت اصلاح شده لانتانیم: بررسی
کلمات کلیدی
بنتونیت اصلاح شده لانتانیم، سمی بودن فسفر، رسوبات، بهبود زیست محیطی، مهندسی ژئوماتیک،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی


- High phosphorus binding efficiency of the lanthanum modified bentonite.
- Efficiency is reduced by the presence of humic substances and competing oxyanions.
- Low eco-toxicological and human health risks.
- Long term investigation are suggested to verify the impact on the ecosystem.

This paper reviews the scientific knowledge on the use of a lanthanum modified bentonite (LMB) to manage eutrophication in surface water. The LMB has been applied in around 200 environments worldwide and it has undergone extensive testing at laboratory, mesocosm, and whole lake scales. The available data underline a high efficiency for phosphorus binding. This efficiency can be limited by the presence of humic substances and competing oxyanions. Lanthanum concentrations detected during a LMB application are generally below acute toxicological threshold of different organisms, except in low alkalinity waters. To date there are no indications for long-term negative effects on LMB treated ecosystems, but issues related to La accumulation, increase of suspended solids and drastic resources depletion still need to be explored, in particular for sediment dwelling organisms. Application of LMB in saline waters need a careful risk evaluation due to potential lanthanum release.

422

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 97, 15 June 2016, Pages 162-174
نویسندگان
, , , , , , , , , , , , ,