عنوان المقالة: Nitrogen and phosphorus uptake and biomass production in four riparian plants grown in subsurface flow constructed wetlands for urban wastewater treatment
عبد السلام النبيلي | Abdeslam Ennabili | 5766
نوع النشر
مجلة علمية
المؤلفون بالعربي
المؤلفون بالإنجليزي
Abdeslam Ennabili, Michel Radoux
الملخص الانجليزي
Riparian woodlands play a multiple ecological and environmental role, including control of non-point source pollution and increasing of nutrients retention. Four riparian species (Arundo donax L., Salix purpurea L., Populus euphratica Olivier and Tamarix gallica L.) were tested comparatively in tertiary treatment and/or secondary one under a Mediterranean climate. Mesocosm inlets and outlets have been sampled every two weeks, during 21 successive months, and analyzed to determine nitrogen (N) and phosphorus (P) contents. Growth, biomass production and/or NP contents of macrophytes were monitored during three successive vegetation periods. Results show that A. donax presents a higher growth rate (2.39 cm d-1) during the vegetation period, and a large harvestable biomass (118–134 t dry weight.ha-1.y-1) and aboveground N/P accumulation (1.55–2.13 t N.ha-1.y-1/0.16–0.17 t P.ha-1.y-1). S. purpurea and T. gallica show medium performances in this respect. In addition, A. donax-Mesocosm retains more particulate and dissolved forms of total nitrogen and total phosphorus, and orthophosphates in both treatment levels. In tertiary treatment, the annual collecting of aboveground biomass contributes to the export of 31.4% N-14.1% P and 14.5% N-7.71% P removed, by A. donax and T. gallica mesocosms in the same order. Collecting biomass of riparian plant grown in subsurface flow constructed wetland promotes more N retention when compared to the P one.
تاريخ النشر
23/12/2020
الناشر
Journal of Environmental Management
رقم المجلد
280
رقم العدد
ISSN/ISBN
0301-4797
رابط DOI
https://doi.org/10.1016/j.jenvman.2020.111806
الصفحات
111806
رابط خارجي
https://authors.elsevier.com/a/1cHo1_6sjVAUJp
الكلمات المفتاحية
Macrophytes, Macro-elements, Phytoremediation, Biomass collecting, Constructed wetland
رجوع