15 results on '"Antón-Herrero, Rafael"'
Search Results
2. Evaluation of the Rhizosphere Resistome of Cultivated Soils Polluted with Antibiotics from Reclaimed Wastewater
- Author
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Mayans, Begoña, primary, Zamora-Martin, Sergio, additional, Antón-Herrero, Rafael, additional, García-Delgado, Carlos, additional, Delgado-Moreno, Laura, additional, Guirado, María, additional, Pérez-Esteban, Javier, additional, Segura, Mª Luz, additional, Escolástico, Consuelo, additional, and Eymar, Enrique, additional
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- 2024
- Full Text
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3. Main Factors Determining the Scale-Up Effectiveness of Mycoremediation for the Decontamination of Aliphatic Hydrocarbons in Soil.
- Author
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Antón-Herrero, Rafael, Chicca, Ilaria, García-Delgado, Carlos, Crognale, Silvia, Lelli, Davide, Gargarello, Romina Mariel, Herrero, Jofre, Fischer, Anko, Thannberger, Laurent, Eymar, Enrique, Petruccioli, Maurizio, and D'Annibale, Alessandro
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FUNGAL remediation , *ALIPHATIC hydrocarbons , *ENVIRONMENTAL remediation , *THERMAL desorption , *SOIL remediation - Abstract
Soil contamination constitutes a significant threat to the health of soil ecosystems in terms of complexity, toxicity, and recalcitrance. Among all contaminants, aliphatic petroleum hydrocarbons (APH) are of particular concern due to their abundance and persistence in the environment and the need of remediation technologies to ensure their removal in an environmentally, socially, and economically sustainable way. Soil remediation technologies presently available on the market to tackle soil contamination by petroleum hydrocarbons (PH) include landfilling, physical treatments (e.g., thermal desorption), chemical treatments (e.g., oxidation), and conventional bioremediation. The first two solutions are costly and energy-intensive approaches. Conversely, bioremediation of on-site excavated soil arranged in biopiles is a more sustainable procedure. Biopiles are engineered heaps able to stimulate microbial activity and enhance biodegradation, thus ensuring the removal of organic pollutants. This soil remediation technology is currently the most environmentally friendly solution available on the market, as it is less energy-intensive and has no detrimental impact on biological soil functions. However, its major limitation is its low removal efficiency, especially for long-chain hydrocarbons (LCH), compared to thermal desorption. Nevertheless, the use of fungi for remediation of environmental contaminants retains the benefits of bioremediation treatments, including low economic, social, and environmental costs, while attaining removal efficiencies similar to thermal desorption. Mycoremediation is a widely studied technology at lab scale, but there are few experiences at pilot scale. Several factors may reduce the overall efficiency of on-site mycoremediation biopiles (mycopiles), and the efficiency detected in the bench scale. These factors include the bioavailability of hydrocarbons, the selection of fungal species and bulking agents and their application rate, the interaction between the inoculated fungi and the indigenous microbiota, soil properties and nutrients, and other environmental factors (e.g., humidity, oxygen, and temperature). The identification of these factors at an early stage of biotreatability experiments would allow the application of this on-site technology to be refined and fine-tuned. This review brings together all mycoremediation work applied to aliphatic petroleum hydrocarbons (APH) and identifies the key factors in making mycoremediation effective. It also includes technological advances that reduce the effect of these factors, such as the structure of mycopiles, the application of surfactants, and the control of environmental factors. [ABSTRACT FROM AUTHOR]
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- 2023
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4. Design of a hydroponic test to evaluate the biostimulant potential of new organic and organomineral products
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Antón Herrero, Rafael, García Delgado, Carlos, Antón Herrero, Gabriel, Mayans, Begoña, Delgado Moreno, Laura, Eymar Alonso, Enrique, UAM. Departamento de Geología y Geoquímica, and UAM. Departamento de Química Agrícola
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Biostimulant efficiency ,Hydroponics ,Water-saving ,Química ,Horticulture ,Root analysis ,Transmission electron microscopy ,Pepper plants - Abstract
Currently, the use of biostimulants is increasing due to the need for greater productivity in agriculture. The European Union presented a new fertilizer regulation, UE 2019/1009, appearing for the first time the concept of biostimulants. Its main objective is to improve the efficiency of plants in the absorption and assimilation of nutrients or their tolerance to biotic or abiotic stresses, regardless of the nutrient content of the product. The objective of this work consisted in the development of a methodology to test in a short-term experiment the efficiency of commercial products as potential biostimulants in a crop of Capsicum annuum L. in strictly hydroponic conditions. Plants were irrigated with the respective product at the recommended dose in water, without the addition of other nutritional sources for 15 days. At the end of the test, the weights of the root and aerial part, the humidity, the chlorophyll indexes, and nutritional leaf content, as well as the volume and morphology of the roots and plants were obtained to evaluate the biostimulant effects on the plant growth and development. The water consumption was also evaluated to analyze whether any of the products generates greater water savings. The study concluded that the nutritive solutions with biostimulants produced a greater increase in the weight of the plant and a lower percentage of leaf moisture, as well as higher values of leaf chlorophyll. On the other hand, it was humic, fulvic, and algae biostimulants that presented the best values in terms of water savings. The methodology developed could be set to test in the short term the biostimulant potential of new products, This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors
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- 2022
5. Assessment of Different Spent Mushroom Substrates to Bioremediate Soils Contaminated with Petroleum Hydrocarbons
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Antón-Herrero, Rafael, primary, García-Delgado, Carlos, additional, Baena, Natalia, additional, Mayans, Begoña, additional, Delgado-Moreno, Laura, additional, and Eymar, Enrique, additional
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- 2022
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6. New uses of treated urban waste digestates on stimulation of hydroponically grown tomato (Solanum lycopersicon L.
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Ayuntamiento de Madrid, Antón Herrero, Rafael [0000-0002-6244-5449], García Delgado, Carlos [0000-0001-9358-361X], Cuevas, Jaime [ 0000-0001-6327-1404], Carreras, Nely [0000-0002-3309-4889], Mayans, Begoña [0000-0002-0563-135X], Camacho-Arévalo, R. [0000-0003-1641-7161], Eymar, Enrique [0000-0003-4982-1216], Antón-Herrero, Rafael, García Delgado, Carlos, Alonso Izquierdo, María, Cuevas, Jaime, Carreras, Nely, Mayans, Begoña, Camacho Arévalo, Raquel, Eymar, Enrique, Ayuntamiento de Madrid, Antón Herrero, Rafael [0000-0002-6244-5449], García Delgado, Carlos [0000-0001-9358-361X], Cuevas, Jaime [ 0000-0001-6327-1404], Carreras, Nely [0000-0002-3309-4889], Mayans, Begoña [0000-0002-0563-135X], Camacho-Arévalo, R. [0000-0003-1641-7161], Eymar, Enrique [0000-0003-4982-1216], Antón-Herrero, Rafael, García Delgado, Carlos, Alonso Izquierdo, María, Cuevas, Jaime, Carreras, Nely, Mayans, Begoña, Camacho Arévalo, Raquel, and Eymar, Enrique
- Abstract
One strategy to re-use solid urban wastes is the production of energy by anaerobic digestion. This process also generates high volume of digestates, which are frequently disposal in landfills. The aim of this work is to assess anaerobic digestates as agricultural inputs. Three different biomethanation wastes from different plants were collected. Firstly, a complete physico-chemical characterization of the wastes was done according to the Spanish regulation, showing that the materials had the 90% of the particles below 25 mm, high values of pH, electric conductivity, organic matter, humic acids and soluble nutrients such as NO3−, SO42−, Ca2+, Mg2+, PO43− and K+. Total concentrations of heavy metals and microbiological parameters were below the threshold levels allowed for agricultural use. The wastes were then treated with a strong acid and a strong base having two different solutions (ATr and BTr, respectively) which were evaluated as biostimulants for tomato plants in hydroponic culture. Those liquid extracts, ATr and BTr, demonstrated their biostimulant ability towards root system of tomato enhancing the hair root density and plant biometric parameters including plants weight and chlorophyll content. This work demonstrates the re-use feasibility of treated digestates in agriculture as fertilizers and more over as feedstock for biostimulants production.
- Published
- 2020
7. Synergistic effects of biochar and biostimulants on nutrient and toxic element uptake by pepper in contaminated soils
- Author
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Plaza de Carlos, César [0000-0001-8616-7001], Antón-Herrero, Rafael, Vega-Jara, Liliana, García-Delgado, Carlos, Mayans, Begoña, Camacho-Arévalo, Raquel, Moreno-Jiménez, Eduardo, Plaza de Carlos, César, Eymar, Enrique, Plaza de Carlos, César [0000-0001-8616-7001], Antón-Herrero, Rafael, Vega-Jara, Liliana, García-Delgado, Carlos, Mayans, Begoña, Camacho-Arévalo, Raquel, Moreno-Jiménez, Eduardo, Plaza de Carlos, César, and Eymar, Enrique
- Abstract
[BACKGROUND] Nowadays a significant amount of land contaminated with toxic elements is being used for agriculture, posing a serious risk of crop contamination and toxicity. Several methodologies are being used to remediate soil contamination, including the use of amendments such as biochar. This work evaluated the effects of biochar combined with different fertirrigations (water, a conventional fertilizer solution, or a fertilizer solution with a commercial biostimulant derived from leonardite) on the availability of toxic elements and nutrients for pepper cultivated in a soil contaminated with As, Cd, Pb, and Zn., [RESULTS] Irrigation with fertilizer solutions improved plant growth regardless of the biochar amendment. Biochar decreased the bioavailability of Cu and Pb in soil and the Cu content in pepper leaves. Combined with fertilization, biochar also decreased plant As and Pb content. Biochar combined with biostimulant decreased the bioavailable content of Cd in soil and its uptake by pepper plants., [CONCLUSION] The use of biochar and biostimulant presented advantages for plant production in a non-suitable scenario of nutrient scarcity and contamination.
- Published
- 2022
8. Biostimulant Effects of Micro Carbon Technology (MCT®)-Based Fertilizers on Soil and Capsicum annuum Culture in Growth Chamber and Field
- Author
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Antón-Herrero, Rafael, primary, García-Delgado, Carlos, additional, Mayans, Begoña, additional, Camacho-Arévalo, Raquel, additional, Delgado-Moreno, Laura, additional, and Eymar, Enrique, additional
- Published
- 2021
- Full Text
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9. Sulfonamides in Tomato from Commercial Greenhouses Irrigated with Reclaimed Wastewater: Uptake, Translocation and Food Safety
- Author
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Camacho-Arévalo, Raquel, primary, García-Delgado, Carlos, additional, Mayans, Begoña, additional, Antón-Herrero, Rafael, additional, Cuevas, Jaime, additional, Segura, María Luz, additional, and Eymar, Enrique, additional
- Published
- 2021
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10. An assessment of Pleurotus ostreatus to remove sulfonamides, and its role as a biofilter based on its own spent mushroom substrate
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Ministerio de Ciencia e Innovación (España), García Delgado, Carlos [0000-0001-9358-361X], Mayans, Begoña, Camacho Arévalo, Raquel, García Delgado, Carlos, Antón-Herrero, Rafael, Escolástico, Consuelo, Segura, María Luz, Eymar, Enrique, Ministerio de Ciencia e Innovación (España), García Delgado, Carlos [0000-0001-9358-361X], Mayans, Begoña, Camacho Arévalo, Raquel, García Delgado, Carlos, Antón-Herrero, Rafael, Escolástico, Consuelo, Segura, María Luz, and Eymar, Enrique
- Abstract
A double strategy based on the removal of sulfonamide antibiotics by Pleurotus ostreatus and adsorption on spent mushroom substrate was assessed to reclaim contaminated wastewater. P. ostreatus was firstly tested in a liquid medium fortified with five sulfonamides: sulfamethoxazole, sulfadiazine, sulfathiazole, sulfapyridine and sulfamethazine, to evaluate its capacity to remove them and to test for any adverse effects on fungal growth and for any reduction in residual antibiotic activity. P. ostreatus was effective in removing sulfonamides up to 83 to 91% of the applied doses over 14 days. The antibiotic activity of the sulfonamide residues was reduced by 50%. Sulfamethoxazole transformation products by laccase were identified, and the degradation pathway was proposed. In addition, P. ostreatus growth on a semi-solid medium of spent mushroom substrate and malt extract agar was used to develop a biofilter for the removal of sulfonamides from real wastewater. The biofilter was able to remove more than 90% of the sulfonamide concentrations over 24 h by combining adsorption and biodegradation mechanisms.
- Published
- 2021
11. Mycoremediation of Soils Polluted with Trichloroethylene: First Evidence of Pleurotus Genus Effectiveness
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Mayans, Begoña, primary, Camacho-Arévalo, Raquel, additional, García-Delgado, Carlos, additional, Alcántara, Cynthia, additional, Nägele, Norbert, additional, Antón-Herrero, Rafael, additional, Escolástico, Consuelo, additional, and Eymar, Enrique, additional
- Published
- 2021
- Full Text
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12. Impact of New Micro Carbon Technology Based Fertilizers on Growth, Nutrient Efficiency and Root Cell Morphology of Capsicum annuum L.
- Author
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Antón-Herrero, Rafael, primary, García-Delgado, Carlos, additional, Mayans, Begoña, additional, Camacho-Arévalo, Raquel, additional, and Eymar, Enrique, additional
- Published
- 2020
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13. Comparative adsorption of tetracyclines on biochars and stevensite: Looking for the most effective adsorbent
- Author
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Ministerio de Economía, Industria y Competitividad (España), Antón-Herrero, Rafael, García Delgado, Carlos, Alonso Izquierdo, María, García Rodríguez, Gabriel, Cuevas, Jaime, Eymar, Enrique, Ministerio de Economía, Industria y Competitividad (España), Antón-Herrero, Rafael, García Delgado, Carlos, Alonso Izquierdo, María, García Rodríguez, Gabriel, Cuevas, Jaime, and Eymar, Enrique
- Abstract
Tetracyclines are one of the most widely used class of veterinary and human antibiotics. The conventional treatment of wastewater based on activated sludge is not effective to remove antibiotics and their residues are still biologically active, which represents a problem in terms of bacterial resistance. The main objective of this work is to assess ability of stevensite and two biochars to adsorb three tetracycline antibiotics from water. Batch adsorption experiments were carried out to test the ability of these materials to adsorb tetracyclines. Then desorption experiments were performed to determine the adsorption strength on stevensite. In order to elucidate the adsorption mechanism of tetracyclines on stevensite, cation exchange analysis and spectroscopic analyses by IR and XRD were performed. The adsorption of tetracyclines on stevensite was tested on continuous system with water artificially contaminated. Finally, the designed filter was validated with tetracyclines spiked wastewater. The two biochars and stevensite were able to adsorb between 60 and 100% of the tetracyclines present in the batch system. Stevensite was the material with the highest tetracyclines removal capacity (around 100% at low concentrations of tetracyclines). Biochars showed less affinity for tetracyclines adsorption (70%). Tetracyclines desorption from stevensite reached values lower than 10% for low tetracyclines concentrations. The IR spectroscopy suggested that cation exchange is the main mechanism of tetracyclines adsorption on clay and also proved the role of amide and amine groups in this adsorption. The cation exchange mechanism was confirmed by displacement of Ca and Mg from stevensite. A continuous wastewater flow through a system composed by stevensite leaved this system with no tetracyclines, indicating water purification by tetracyclines adsorption in clay.
- Published
- 2018
14. Biostimulant Effects of Micro Carbon Technology (MCT ®)-Based Fertilizers on Soil and Capsicum annuum Culture in Growth Chamber and Field.
- Author
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Antón-Herrero, Rafael, García-Delgado, Carlos, Mayans, Begoña, Camacho-Arévalo, Raquel, Delgado-Moreno, Laura, and Eymar, Enrique
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CAPSICUM annuum , *BIOFERTILIZERS , *FERTILIZERS , *SOILS , *SOIL texture , *ALTERNATIVE crops - Abstract
Due to the environmental issues that conventional fertilization is causing, biostimulants are proposed as environmentally friendly alternative for crop nutrition in agriculture. The aim of this study was to determine the effects of new Micro Carbon Technology (MCT®) fertilizers with biostimulant activity based on humic acids biologically digested from leonardite on pepper plant growth in three different soils with different textures. The assays were performed under controlled conditions in a growth chamber and in commercial greenhouses in Spain. The effects on soil were analyzed after the addition of the fertilizers by microbial respiration and enzymatic activities (hydrolase, dehydrogenase and urease). For the plant assays, biometric parameters (fresh weight and fruit hardness) and foliar analysis (chlorophyll indices and nutrients) were evaluated. Under controlled conditions, the use of these biostimulants resulted in a greater soil microbial activity in a 24 h interval with increased soil enzymatic activity. In plants, a positive correlation was found between fertilizers with biostimulant activity and Dualex indices of leaves and content of macronutrients Ca and Mg. In commercial greenhouses, the fertilizers with biostimulant activity strongly depended on the soil texture. In conclusion, these products have real potential to replace conventional fertilizers in commercial production fields. [ABSTRACT FROM AUTHOR]
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- 2022
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15. New Uses of Treated Urban Waste Digestates on Stimulation of Hydroponically Grown Tomato (Solanum lycopersicon L.)
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N. Carreras, Enrique Eymar, Jaime Cuevas, Begoña Mayans, Rafael Antón-Herrero, Carlos García-Delgado, M. Alonso-Izquierdo, Raquel Camacho-Arévalo, UAM. Departamento de Geología y Geoquímica, UAM. Departamento de Química Agrícola, Ayuntamiento de Madrid, Antón Herrero, Rafael, García Delgado, Carlos, Cuevas, Jaime, Carreras, Nely, Mayans, Begoña, Camacho-Arévalo, R., Eymar, Enrique, Antón Herrero, Rafael [0000-0002-6244-5449], García Delgado, Carlos [0000-0001-9358-361X], Cuevas, Jaime [ 0000-0001-6327-1404], Carreras, Nely [0000-0002-3309-4889], Mayans, Begoña [0000-0002-0563-135X], Camacho-Arévalo, R. [0000-0003-1641-7161], and Eymar, Enrique [0000-0003-4982-1216]
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0106 biological sciences ,Nutrient cycle ,Environmental Engineering ,020209 energy ,02 engineering and technology ,Raw material ,01 natural sciences ,Lycopersicon ,Anaerobic digestate ,Nutrient ,010608 biotechnology ,0202 electrical engineering, electronic engineering, information engineering ,Geología ,Organic matter ,Waste Management and Disposal ,chemistry.chemical_classification ,biology ,Nutrient recycling ,Renewable Energy, Sustainability and the Environment ,Química ,biology.organism_classification ,Pulp and paper industry ,Waste treatment ,Biostimulant ,Anaerobic digestion ,Biostimulants ,chemistry ,Municipal solid wastes ,Solanum - Abstract
26 páginas, 5 tablas, 3 figuras. -- This is a post-peer-review, pre-copyedit version of an article published in Waste and Biomass Valorization. The final authenticated version is available online at: http://dx.doi.org/10.1007/s12649-020-01137-8, One strategy to re-use solid urban wastes is the production of energy by anaerobic digestion. This process also generates high volume of digestates, which are frequently disposal in landfills. The aim of this work is to assess anaerobic digestates as agricultural inputs. Three different biomethanation wastes from different plants were collected. Firstly, a complete physico-chemical characterization of the wastes was done according to the Spanish regulation, showing that the materials had the 90% of the particles below 25 mm, high values of pH, electric conductivity, organic matter, humic acids and soluble nutrients such as NO3−, SO42−, Ca2+, Mg2+, PO43− and K+. Total concentrations of heavy metals and microbiological parameters were below the threshold levels allowed for agricultural use. The wastes were then treated with a strong acid and a strong base having two different solutions (ATr and BTr, respectively) which were evaluated as biostimulants for tomato plants in hydroponic culture. Those liquid extracts, ATr and BTr, demonstrated their biostimulant ability towards root system of tomato enhancing the hair root density and plant biometric parameters including plants weight and chlorophyll content. This work demonstrates the re-use feasibility of treated digestates in agriculture as fertilizers and more over as feedstock for biostimulants production., The city Hall of Madrid funded this work.
- Published
- 2020
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