Arsenic adsorption and plant availability in an agricultural soil irrigated with As-rich water: Effects of Fe-rich amendments and organic and inorganic fertilisers
| العنوان: | Arsenic adsorption and plant availability in an agricultural soil irrigated with As-rich water: Effects of Fe-rich amendments and organic and inorganic fertilisers |
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| المؤلفون: | Tania Pardo, M.P. Bernal, Rafael Clemente, Elena Arco-Lázaro |
| المساهمون: | Fundación Séneca, Ministerio de Economía y Competitividad (España), European Commission |
| المصدر: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Irrigation, Environmental Engineering, Sorption isotherms, Plant uptake, 0211 other engineering and technologies, 02 engineering and technology, 010501 environmental sciences, Management, Monitoring, Policy and Law, engineering.material, complex mixtures, 01 natural sciences, Iron oxides, Arsenic, Soil, Nutrient, Adsorption, Soil Pollutants, Leaching (agriculture), Fertilizers, Waste Management and Disposal, 0105 earth and related environmental sciences, Red mud, 021110 strategic, defence & security studies, Chemistry, Compost, fungi, food and beverages, Water, General Medicine, Soil conditioner, Spain, Environmental chemistry, Soil water, engineering |
| الوصف: | The use of As-rich water for irrigation in agricultural soils may result in As accumulation in soil and crops, with the consequent risk of its entry into the food chain. The effectiveness of three different Fe-based materials (a commercial iron oxide (Bayoxide®), lamination slag (a by-product of the hot rolling of steel) and a commercial red mud derivative (ViroBind™)) used as soil amendments to minimise the impact of irrigation with As-rich water in an agricultural soil-plant system was evaluated in a pot experiment. Simultaneously, the influence of organic and inorganic fertilisation (olive oil mill waste compost versus NPK fertiliser) on the effectiveness of iron oxide in As adsorption processes was also assessed. The As adsorption capacity of the amendments was determined in a preliminary batch experiment using sorption isotherms. Then, a pot experiment was carried out in a growth chamber using an agricultural soil (arenosol) from Segovia province (central Spain), amended with the different materials, in which Lactuca sativa (lettuce) was grown for two months. The As adsorption capacity was higher in the commercial iron oxide and in the red mud derivative, which fitted the Freundlich model (no saturation), than in the lamination slag, which fitted the Langmuir model (limited adsorption). All the materials decreased the pore water As concentration compared to the control (by 29–80%), but only iron oxide reduced As availability in the soil, and none of the amendments decreased the As concentration in plant leaves. The combination of iron oxide and compost did not significantly improve plant growth, but increased nutrients (N, K, Ca, Na and Mg) concentrations and availability in the soil and their concentration in the plants, relative to the other treatments and the control. Therefore, this seems to be a viable option to prevent As leaching and improve the plant nutritional status. This work was financed by the Spanish “Ministerio de Economía y Competitividad” (MINECO)/EU-FEDER funds (project CTM2013-48697-C2-1-R) and by the Fundación Séneca (Murcia Region, project 11785/PI/09). E. Arco-Lázaro thanks the Spanish MINECO for the FPI grant awarded (ref.: BES-2011-050608). |
| تدمد: | 1095-8630 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65400f1ee4b38200c0e16444f0d9cb7d https://pubmed.ncbi.nlm.nih.gov/29306143 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....65400f1ee4b38200c0e16444f0d9cb7d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10958630 |
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