Eutrophication management in surface waters using lanthanum modified bentonite: A review

WATER RESEARCH

卷:97

Review

Copetti, Diego¹  Finsterle, Karin²  Marziali, Laura¹  Stefani, Fabrizio¹  Tartari, Gianni¹  Douglas, Grant³  Reitzel, Kasper⁴  Spears, Bryan M.⁵  Winfield, Ian J.⁶  Crosa, Giuseppe⁷  D'Haese, Patrick⁸  Yasseri, Said²  Lurling, Miquel⁹ 

[1] Natl Res Council Italy IRSA CNR, Water Res Inst, Via Mulino 19, I-20861 Brugherio, MB, Italy

[2] Inst Dr Nowak, Mayenbrook 1, D-28870 Ottersberg, Germany

[3] CSIRO Land & Water, Wembley, WA, Australia

[4] Univ Southern Denmark, Dept Biol, DK-5230 Odense M, Denmark

[5] Ctr Ecol & Hydrol, Penicuik EH26 0QB, Midlothian, Scotland

[6] Ctr Ecol & Hydrol, Lake Ecosyst Grp, Lancaster LA1 4AP, England

[7] Univ Insubria, Dept Theoret & Appl Sci, Ecol Unit, Via H Dunant 3, I-21100 Varese, Italy

[8] Univ Antwerp, Lab Pathophysiol, Univ Pl 1, B-2610 Antwerp, Belgium

[9] Wageningen Univ, Dept Environm Sci, Aquat Ecol & Water Qual Management Grp, POB 47, NL-6700 AA Wageningen, Netherlands

关键词: Lanthanum modified bentonite;    Toxicity;    Phosphorus;    Sediments;    Ecological recovery;    Geo-engineering;   

DOI  :  10.1016/j.watres.2015.11.056

来源: Elsevier

【 摘 要 】

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. (C) 2015 Elsevier Ltd. All rights reserved.

【 授权许可】

Free