Microbial nitrate removal efficiency in groundwater polluted from agricultural activities with hybrid cork treatment wetlands
| Autor: | Isabel Ferrera, Lorena Aguilar, Ángel Gallegos, Raquel Rubio, Jordi Morató, Beatriz Missagia, Marwa Ben Saad, Patricia del Mar Caro, Carlos A. Pérez, Carlos A. Arias, Olga Sánchez, Santiago Sahuquillo |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Òptica i Optometria, Universitat Politècnica de Catalunya. SUMMLab - Sustainability Measurement and Modeling Lab, European Commission |
| Rok vydání: | 2018 |
| Předmět: |
Microbial diversity
Denitrification Nitrats 010504 meteorology & atmospheric sciences Cork by-product DIVERSITY Wetland Plant Bark/chemistry 010501 environmental sciences 01 natural sciences chemistry.chemical_compound Quercus SUBSTRATE Nitrate Water Purification/methods Suro -- Indústria i comerç Quercus/chemistry Waste Management and Disposal Groundwater Water Pollutants Chemical/analysis geography.geographical_feature_category High-throughput sequencing Microbiota high-throughput sequencing Agriculture Pollution TREATMENT SYSTEMS Groundwater--Pollution Centro Oceanográfico de Málaga Aigües subterrànies -- Contaminació Plant Bark ABUNDANCE BACTERIAL COMMUNITIES COMMUNITY STRUCTURE nitrate pollution Denitrifying bacteria Groundwater/chemistry Environmental Engineering microbial communities Microbial communities Cork engineering.material Cork industry Proteobacteria/isolation & purification Enginyeria civil::Geologia::Hidrologia subterrània [Àrees temàtiques de la UPC] Water Purification Nitrate pollution Proteobacteria cork by-product Enginyeria agroalimentària::Ciències de la terra i de la vida::Microbiologia [Àrees temàtiques de la UPC] FLOW CONSTRUCTED WETLANDS Environmental Chemistry Subsurface flow Nitrogen cycle 0105 earth and related environmental sciences Microbiologia -- Aspectes ambientals geography Hybrid treatment wetland Nitrates Construction Materials denitrifiers Environmental engineering PERFORMANCE NITROGEN REMOVAL WASTE-WATER TREATMENT Construction Materials/analysis Aiguamolls chemistry Spain Nutrient pollution Desenvolupament humà i sostenible::Degradació ambiental::Contaminació de l'aigua [Àrees temàtiques de la UPC] Wetlands engineering Desenvolupament humà i sostenible::Desenvolupament humà::Aigua i sanejament [Àrees temàtiques de la UPC] Microbiota/physiology Environmental science Nitrates/analysis Denitrifiers Adsorption Filtration Water Pollutants Chemical |
| Zdroj: | Recercat. Dipósit de la Recerca de Catalunya instname e-IEO. Repositorio Institucional Digital de Acceso Abierto del Instituto Español de Oceanografía UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Digital.CSIC. Repositorio Institucional del CSIC Aguilar, L, Gallegos, Á, Arias, C A, Ferrera, I, Sánchez, O, Rubio, R, Saad, M B, Missagia, B, Caro, P, Sahuquillo, S, Pérez, C & Morató, J 2019, ' Microbial nitrate removal efficiency in groundwater polluted from agricultural activities with hybrid cork treatment wetlands ', Science of the Total Environment, vol. 653, pp. 723-734 . https://doi.org/10.1016/j.scitotenv.2018.10.426 |
| ISSN: | 1879-1026 |
| DOI: | 10.1016/j.scitotenv.2018.10.426 |
| Popis: | 12 pages, 14 figures, 3 tables, supplementary data https://doi.org/10.1016/j.scitotenv.2018.10.426 Agricultural practices have raised the level of nutrients reaching aquifers. In Europe, nitrate pollution is considered as one of the main threats for the quality of groundwater in agricultural areas. Treatment wetlands (TWs), also known as Constructed Wetlands, are used for groundwater treatment in areas with an important concentration of nitrogen compounds; total nitrogen removal depends on the type and operation scheme. Cork by-product from the industry has shown clear adsorbent properties to remove organic pollutants. The work is focused on the characterization of microbial communities involved in the nitrate‑nitrogen removal process in groundwater polluted from agricultural activities. The experimental design allowed the comparison of nitrate removal efficiency depending on the filter media material, cork by-product or gravel, used in two hybrid TWs (a vertical flow cell followed by a horizontal subsurface flow cell), installed in areas close to two irrigated agricultural plots at the Lleida plain area (Spain). Both physicochemical and microbial results were consistent and confirm the nitrate removal efficiency using cork as a filter media. A significant (p = 0.0025) higher removal in Bellvís TW using cork compared with the Vilanova de la Barca gravel system was observed, achieving a removal rate from 80 to 99% compared to the 5–46%, respectively. Regarding the community composition of the two different TWs, microorganisms were mainly related to the phylum Proteobacteria, and included members found to be key players in the nitrogen cycle, such as ammonia and nitrite oxidizers, as well as denitrifiers. Also, the group Bacteroidetes turns to be another abundant phylum from our bacterial dataset, whose members are suggested to be strongly involved in denitrification processes. Some groups showed to prevail depending on the type of media (cork or gravel); Firmicutes and Delta and Epsilonproteobacteria had a significant higher abundance in the TW with cork, while Acidobacteria and Planctomyces were prevalent in gravel. Therefore, cork could be an alternative material used by treatment wetlands to minimize the impact in the environment caused by nitrogen pollution in groundwater bodies To LIFE Programme, the EU's financial instrument supporting environmental, nature conservation and climate action projects throughout the EU, that supports REAGRITECH LIFE 11 ENV/ES/579 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect