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Santhappan JS, Kalaiselvan N, Assis SM, Amjith LR, Glivin G, Mathimani T. Origin, types, and contribution of emerging pollutants to environmental degradation and their remediation by physical and chemical techniques. ENVIRONMENTAL RESEARCH 2024; 257:119369. [PMID: 38848998 DOI: 10.1016/j.envres.2024.119369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 05/24/2024] [Accepted: 06/05/2024] [Indexed: 06/09/2024]
Abstract
The growing presence of emerging pollutants (EPs) in aquatic environments, as well as their harmful impacts on the biosphere and humans, has become a global concern. Recent developments and advancements in pharmaceuticals, agricultural practices, industrial activities, and human personal care substances have paved the way for drastic changes in EP concentrations and impacts on the ecosystem. As a result, it is critical to mitigate EP's harmful effects before they jeopardize the ecological equilibrium of the overall ecosystem and the sustainable existence of life on Earth. This review comprehensively documented the types, origins, and remediation strategies of EPs, and underscored the significance of this study in the current context. We briefly stated the major classification of EPs based on their organic and inorganic nature. Furthermore, this review systematically evaluates the occurrence of EPs due to the fast-changing ecological scenarios and their impact on human health. Recent studies have critically discussed the emerging physical and chemical processes for EP removal, highlighting the limitations of conventional remediation technologies. We reviewed and presented the challenges associated with EP remediation and degradation using several methods, including physical and chemical methods, with the application of recent technologies. The EP types and various methods discussed in this review help the researchers understand the nature of present-day EPs and utilize an efficient method of choice for EP removal and management in the future for sustainable life and development activities on the planet.
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Affiliation(s)
- Joseph Sekhar Santhappan
- College of Engineering and Technology, University of Technology and Applied Sciences, Musandam, Oman
| | - Narasimman Kalaiselvan
- Technology Information Forecasting and Assessment Council (TIFAC), Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Shan M Assis
- Department of Mechanical Engineering, Musaliar College of Engineering and Technology, Pathanamthitta, Kerala, 689653, India
| | - L R Amjith
- Department of Mechanical Engineering, Marian Engineering College, Kazhakuttom, Thiruvananthapuram, 695582, Kerala, India
| | - Godwin Glivin
- Department of Mechanical Engineering, Sree Chitra Thirunal College of Engineering, Pappanamcode, Thiruvananthapuram, Kerala, 695018, India
| | - Thangavel Mathimani
- Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam; School of Engineering & Technology, Duy Tan University, Da Nang, Viet Nam.
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Míguez-González A, Cela-Dablanca R, Barreiro A, Rodríguez-López L, Rodríguez-Seijo A, Arias-Estévez M, Núñez-Delgado A, Fernández-Sanjurjo MJ, Castillo-Ramos V, Álvarez-Rodríguez E. Adsorption of antibiotics on bio-adsorbents derived from the forestry and agro-food industries. ENVIRONMENTAL RESEARCH 2023; 233:116360. [PMID: 37295584 DOI: 10.1016/j.envres.2023.116360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/22/2023] [Accepted: 06/07/2023] [Indexed: 06/12/2023]
Abstract
Antibiotic consumption at high levels in both human and veterinary populations pose a risk to their eventual entry into the food chain and/or water bodies, which will adversely affect the health of living organisms. In this work, three materials from forestry and agro-food industries (pine bark, oak ash and mussel shell) were investigated as regards their potential use as bio-adsorbents in the retention of the antibiotics amoxicillin (AMX), ciprofloxacin (CIP) and trimethoprim (TMP). Batch adsorption/desorption tests were conducted, adding increasing concentrations of the pharmaceuticals individually (from 25 to 600 μmol L-1), reaching maximum adsorption capacities of ≈ 12000 μmol kg-1 for the three antibiotics, with removal percentages of ≈ 100% for CIP, 98-99% adsorption for TMP onto pine bark, and 98-100% adsorption for AMX onto oak ash. The presence of high calcium contents and alkaline conditions in the ash favored the formation of cationic bridges with AMX, whereas the predominance of hydrogen bonds between pine bark and TMP and CIP functional groups explain the strong affinity and retention of these antibiotics. The Freundlich's model provided the best prediction for AMX adsorption onto oak ash and mussel shell (heterogeneous adsorption), whereas the Langmuir's model described well AMX adsorption onto pine bark, as well as CIP adsorption onto oak ash (homogeneous and monolayer adsorption), while all three models provided satisfactory results for TMP. In the present study, the results obtained were crucial in terms of valorization of these adsorbents and their subsequent use to improve the retention of antibiotics of emerging concern in soils, thereby preventing contamination of waters and preserving environment quality.
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Affiliation(s)
- Ainoa Míguez-González
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, University of Santiago de Compostela, 27002, Lugo, Spain
| | - Raquel Cela-Dablanca
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, University of Santiago de Compostela, 27002, Lugo, Spain
| | - Ana Barreiro
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, University of Santiago de Compostela, 27002, Lugo, Spain
| | - Lucia Rodríguez-López
- Soil Science and Agricultural Chemistry, Faculty of Sciences, University of Vigo, 32004, Ourense, Spain
| | - Andrés Rodríguez-Seijo
- Soil Science and Agricultural Chemistry, Faculty of Sciences, University of Vigo, 32004, Ourense, Spain
| | - Manuel Arias-Estévez
- Soil Science and Agricultural Chemistry, Faculty of Sciences, University of Vigo, 32004, Ourense, Spain
| | - Avelino Núñez-Delgado
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, University of Santiago de Compostela, 27002, Lugo, Spain
| | - María J Fernández-Sanjurjo
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, University of Santiago de Compostela, 27002, Lugo, Spain
| | - Ventura Castillo-Ramos
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, 18071, Granada, Spain.
| | - Esperanza Álvarez-Rodríguez
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, University of Santiago de Compostela, 27002, Lugo, Spain
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Rodríguez-López L, Santás-Miguel V, Cela-Dablanca R, Núñez-Delgado A, Álvarez-Rodríguez E, Rodríguez-Seijo A, Arias-Estévez M. Clarithromycin as soil and environmental pollutant: Adsorption-desorption processes and influence of pH. ENVIRONMENTAL RESEARCH 2023; 233:116520. [PMID: 37390951 DOI: 10.1016/j.envres.2023.116520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/07/2023] [Accepted: 06/27/2023] [Indexed: 07/02/2023]
Abstract
Antibiotics pollution is a growing environmental issue, as high amounts of these compounds are found in soil, water and sediments. This work studies the adsorption/desorption of the macrolide antibiotic clarithromycin (CLA) for 17 agricultural soils with different edaphic characteristics. The research was carried out using batch-type experiments, with an additional assessment of the specific influence of pH for 6 of the soils. The results show that CLA adsorption reaches between 26 and 95%. In addition, the fit of the experimental data to adsorption models provided values between 1.9 and 19.7 Ln μmol1-n kg-1 for the KF, Freundlich affinity coefficient, and between 2.5 and 10.5 L kg-1 for Kd, distribution constant of Linear model. Regarding the linearity index, n, it varied between 0.56 and 1.34. Desorption showed lower scores than adsorption, with an average of 20%, and with values of 3.1 and 93.0 Ln μmol1-n kg-1 for KF(des) and 4.4 and 95.0 L kg-1 for Kd(des). The edaphic characteristics with the highest influence on adsorption were the silt fraction content and the exchangeable Ca content, while in the case of desorption, they were the total nitrogen, organic carbon, and exchangeable Ca and Mg contents. Regarding the pH, within the range studied (between 3 and 10), its value did not decisively affect the adsorption/desorption process. Overall, the set of these results could be of help to program appropriate measures leading to the retention/elimination of this antibiotic when it reaches the environment as a pollutant.
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Affiliation(s)
- Lucía Rodríguez-López
- Department of Plant Biology and Soil Science, Facultade de Ciencias, Universidade de Vigo, 32004, Ourense, Spain; Instituto de Agroecoloxía e Alimentación (IAA), Universidade de Vigo - Campus Auga, 32004, Ourense, Spain.
| | - Vanesa Santás-Miguel
- Department of Plant Biology and Soil Science, Facultade de Ciencias, Universidade de Vigo, 32004, Ourense, Spain; Instituto de Agroecoloxía e Alimentación (IAA), Universidade de Vigo - Campus Auga, 32004, Ourense, Spain
| | - Raquel Cela-Dablanca
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Universidade de Santiago de Compostela, 27002, Lugo, Spain
| | - Avelino Núñez-Delgado
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Universidade de Santiago de Compostela, 27002, Lugo, Spain
| | - Esperanza Álvarez-Rodríguez
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Universidade de Santiago de Compostela, 27002, Lugo, Spain
| | - Andrés Rodríguez-Seijo
- Department of Plant Biology and Soil Science, Facultade de Ciencias, Universidade de Vigo, 32004, Ourense, Spain; Instituto de Agroecoloxía e Alimentación (IAA), Universidade de Vigo - Campus Auga, 32004, Ourense, Spain
| | - Manuel Arias-Estévez
- Department of Plant Biology and Soil Science, Facultade de Ciencias, Universidade de Vigo, 32004, Ourense, Spain; Instituto de Agroecoloxía e Alimentación (IAA), Universidade de Vigo - Campus Auga, 32004, Ourense, Spain
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Coccia M, Bontempi E. New trajectories of technologies for the removal of pollutants and emerging contaminants in the environment. ENVIRONMENTAL RESEARCH 2023; 229:115938. [PMID: 37086878 DOI: 10.1016/j.envres.2023.115938] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 02/02/2023] [Accepted: 04/17/2023] [Indexed: 05/03/2023]
Abstract
Modern society has increasingly a diffusion of pollutants and emerging contaminants (e.g., different types of chemicals and endocrine disruptors in pharmaceuticals, pesticides, household cleaning, and personal care products, etc.) that have detrimental effects on the environment (atmosphere, hydrosphere, biosphere and anthroposphere) and also generate diseases and disorders on the people health. Environmental science requires efforts in the detection and elimination of manifold pollutants and emerging pollutants with appropriate product and process technologies. This study aims to analyze different paths of treatment technologies to investigate their evolution and predict new directions of promising technological trajectories to support the removal of contaminants directed to reach, whenever possible, sustainable development objectives. The work is mainly devoted to wastewater treatment technologies. A proposed model analyzes the evolution of patents (proxy of innovation and new technology) on publications (proxy of science and knowledge advances) to quantify the relative growth rate of new trajectories of technologies to remove pollutants and emerging contaminants. Results reveal that new directions of treatment technologies having an accelerated rate of growth are (in decreasing order): biochar and reverse osmosis in physical-based technologies, coagulation, and disinfection water treatments in chemical-based technologies and anaerobic processes in biological-based technologies. Other main technologies, such as carbon nanotubes and advanced oxidation processes, seem to be in the initial phase of development and need learning by using processes and further science and technology advances to be implemented as effective treatments and cost-effective. The results here are in accord with global water and wastewater equipment treatment market revenues by technology, showing a similar trend. These findings bring us to the main information to extend the knowledge about new directions of technologies for the treatment and/or elimination of pollutants and microorganisms that can support decisions of policymakers towards goals of sustainable development by reducing environmental degradation and people health disorders.
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Affiliation(s)
- Mario Coccia
- National Research Council of Italy, IRCRES-CNR, Turin Research Area of the National Research Council, Strada Delle Cacce, 73-10135, Torino, Italy.
| | - Elza Bontempi
- INSTM and Chemistry for Technologies Laboratory, University of Brescia, Via Branze 38, 25123, Brescia, Italy.
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Rodríguez-González L, Núñez-Delgado A, Álvarez-Rodríguez E, Díaz-Raviña M, Arias-Estévez M, Fernández-Calviño D, Santás-Miguel V. Direct toxicity of six antibiotics on soil bacterial communities affected by the addition of bio-adsorbents. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 322:121161. [PMID: 36720341 DOI: 10.1016/j.envpol.2023.121161] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 01/14/2023] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
Reducing the toxicity caused by antibiotics on bacterial communities in the soil is one of the great challenges of this century. For this, the effectiveness of amending the soil with different bioadsorbents such as crushed mussel shell (CMS), pine bark (PB) and biomass ash (BA), as well as combinations of them (CMS + PB and PB + BA) was studied at different doses (0 g kg-1 to 48 g kg-1). Soil samples were spiked, separately, with increasing doses (0-2000 mg kg-1) of cefuroxime (CMX), amoxicillin (AMX), clarithromycin (CLA), azithromycin (AZI), ciprofloxacin (CIP) and trimethoprim (TMP). Their toxicity on bacterial growth was estimated using the tritium-labeled leucine (3H) incorporation method. Toxicity was observed to behave differently depending on the antibiotic family and bioadsorbent, although in different magnitude and at different doses. The toxicity of β-lactams (AMX and CXM) was reduced by up to 54% when the highest doses of bio-adsorbents were added due to the increase in pH (CMS and BA) and carbon (PB) contribution. Macrolides (CLA and AZI) showed slight toxicity in un-amended soil samples, which increased by up to 65% with the addition of the bio-adsorbents. The toxicity of CIP (a fluoroquinolone) increased with the dose of the bio-adsorbents, reaching up to 20% compared with the control. Finally, the toxicity of TMP (a diaminopyrimidine) slightly increased with the dose of bio-adsorbents. The by-products that increase soil pH are those that showed the highest increases of CLA, AZI, CIP and TMP toxicities. These results could help to prevent/reduce environmental pollution caused by different kinds of antibiotics, selecting the most appropriated bio-adsorbents and doses.
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Affiliation(s)
- Laura Rodríguez-González
- Área de Edafoloxía e Química Agrícola, Departamento de Bioloxía Vexetal e Ciencia do Solo, Facultade de Ciencias, Universidade de Vigo, Campus As Lagoas, s/n, 32004, Ourense, Spain
| | - Avelino Núñez-Delgado
- Departamento de Edafoloxía e Química Agrícola, Escola Politécnica Superior de Enxeñaría, Universidade de Santiago de Compostela, Campus Univ, 27002, Lugo, Spain
| | - Esperanza Álvarez-Rodríguez
- Departamento de Edafoloxía e Química Agrícola, Escola Politécnica Superior de Enxeñaría, Universidade de Santiago de Compostela, Campus Univ, 27002, Lugo, Spain
| | - Montserrat Díaz-Raviña
- Departamento de Bioquímica del Suelo, Misión Biológica de Galicia (MBG-CSIC), Apartado 122, 15780, Santiago de Compostela, Spain
| | - Manuel Arias-Estévez
- Departamento de Edafoloxía e Química Agrícola, Escola Politécnica Superior de Enxeñaría, Universidade de Santiago de Compostela, Campus Univ, 27002, Lugo, Spain
| | - David Fernández-Calviño
- Área de Edafoloxía e Química Agrícola, Departamento de Bioloxía Vexetal e Ciencia do Solo, Facultade de Ciencias, Universidade de Vigo, Campus As Lagoas, s/n, 32004, Ourense, Spain
| | - Vanesa Santás-Miguel
- Área de Edafoloxía e Química Agrícola, Departamento de Bioloxía Vexetal e Ciencia do Solo, Facultade de Ciencias, Universidade de Vigo, Campus As Lagoas, s/n, 32004, Ourense, Spain.
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Souza TG, Olusegun SJ, Galvao BR, Da Silva JL, Mohallem ND, Ciminelli VS. Mechanism of amoxicillin adsorption by ferrihydrites: experimental and computational approaches. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Álvarez-Esmorís C, Rodríguez-López L, Núñez-Delgado A, Álvarez-Rodríguez E, Fernández-Calviño D, Arias-Estévez M. Influence of pH on the adsorption-desorption of doxycycline, enrofloxacin, and sulfamethoxypyridazine in soils with variable surface charge. ENVIRONMENTAL RESEARCH 2022; 214:114071. [PMID: 35995223 DOI: 10.1016/j.envres.2022.114071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 07/19/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
In this research, the adsorption/desorption of the antibiotics doxycycline (DC), enrofloxacin (ENR), and sulfamethoxypyradazine (SMP) was studied in 6 agricultural soils with predominance of variable charge, both before and after removing organic matter by calcination. DC adsorption was high at acidic pH, and decreased at pH values above 8. Removal of organic matter with calcination caused just a slight decrease in adsorption, and even in some soils adsorption was similar to that in non-calcined samples. The adsorption coefficients (Kd) were higher for the DC- species compared to DC+, DC0 and DC2-. Regarding DC desorption, the values were very low throughout the pH range covered in the study (2-12), both in the calcined samples and in those not subjected to calcination. ENR showed a similar behavior to DC regarding the effect of pH, since ENR adsorption also decreased at basic pH, but the effect of removing organic matter was different, as it caused a clear decrease in ENR adsorption. The species with the highest Kd was in this case ENR0, although ENR+ is also quantitatively important as regards Kd value in calcined samples. For this antibiotic, no differences in desorption were observed between calcined and non-calcined samples. Finally, SMP adsorption also decreased as pH increased, and, in addition, similarly to what happened with ENR, in general, there was a strong decrease in SMP adsorption when organic matter was removed. The species with the highest Kd in this case was SMP+ in non-calcined samples, but SMP0 and SMP- become more relevant in calcined samples. The percentages of SMP desorption were higher than those for the other two antibiotics, and an increase occurs at intermediate pH values, being higher for calcined samples. These results can be considered relevant in terms of increasing the knowledge as regards the possible evolution and fate of the three antibiotics studied. Specifically, for different pH conditions and with different organic matter contents, when they reach soils and other environmental compartments after being discharged as contaminants. This could have important repercussions on public health and the overall environment.
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Affiliation(s)
| | - Lucia Rodríguez-López
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - Avelino Núñez-Delgado
- Dept. Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - Esperanza Álvarez-Rodríguez
- Dept. Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | | | - Manuel Arias-Estévez
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain.
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Rodríguez-González L, Núñez-Delgado A, Álvarez-Rodríguez E, García-Campos E, Martín Á, Díaz-Raviña M, Arias-Estévez M, Fernández-Calviño D, Santás-Miguel V. Effects of ciprofloxacin, trimethoprim, and amoxicillin on microbial structure and growth as emerging pollutants reaching crop soils. ENVIRONMENTAL RESEARCH 2022; 214:113916. [PMID: 35872321 DOI: 10.1016/j.envres.2022.113916] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/06/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
The presence of emerging pollutants, and specifically antibiotics, in agricultural soils has increased notably in recent decades, causing growing concern as regards potential environmental and health issues. With this in mind, the current study focuses on evaluating the toxicity exerted by three antibiotics (amoxicillin, trimethoprim, and ciprofloxacin) on the growth of soil bacterial communities, when these pollutants are present at different doses, and considered in the short, medium, and long terms (1, 8 and 42 days of incubation). Specifically, the research was carried out in 12 agricultural soils having different physicochemical characteristics and was performed by means of the leucine (3H) incorporation method. In addition, changes in the structure of soil microbial communities at 8 and 42 days were studied in four of these soils, using the phospholipids of fatty acids method for this. The main results indicate that the most toxic antibiotic was amoxicillin, followed by trimethoprim and ciprofloxacin. The results also show that the toxicity of amoxicillin decreases with time, with values of Log IC50 ranging from 0.07 ± 0.05 to 3.43 ± 0.08 for day 1, from 0.95 ± 0.07 to 3.97 ± 0.15 for day 8, and from 2.05 ± 0.03 to 3.18 ± 0.04 for day 42, during the incubation period. Regarding trimethoprim, 3 different behaviors were observed: for some soils the growth of soil bacterial communities was not affected, for a second group of soils trimethoprim toxicity showed dose-response effects that remained persistent over time, and, finally, for a third group of soils the toxicity of trimethoprim increased over time, being greater for longer incubation times (42 days). As regards ciprofloxacin, this antibiotic did not show a toxicity effect on the growth of soil bacterial communities for any of the soils or incubation times studied. Furthermore, the principal component analysis performed with the phospholipids of fatty acids results demonstrated that the microbial community structure of these agricultural soils, which persisted after 42 days of incubation, depended mainly on soil characteristics and, to a lesser extent, on the dose and type of antibiotic (amoxicillin, trimethoprim or ciprofloxacin). In addition, it was found that, in this research, the application of the three antibiotics to soils usually favored the presence of fungi and Gram-positive bacteria.
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Affiliation(s)
- Laura Rodríguez-González
- Área de Edafoloxía e Química Agrícola. Facultade de Ciencias. Universidade de Vigo, As Lagoas 1, 32004, Ourense. Spain
| | - Avelino Núñez-Delgado
- Departamento de Edafoloxía e Química Agrícola, Escola Politécnica Superior de Enxeñaría, Universidade de Santiago de Compostela, Lugo, Spain
| | - Esperanza Álvarez-Rodríguez
- Departamento de Edafoloxía e Química Agrícola, Escola Politécnica Superior de Enxeñaría, Universidade de Santiago de Compostela, Lugo, Spain
| | - Elena García-Campos
- Departamento de Bioquímica del Suelo, Misión Biológica de Galicia (MBG-CSIC), Apartado 122, 15780, Santiago de Compostela, Spain
| | - Ángela Martín
- Departamento de Bioquímica del Suelo, Misión Biológica de Galicia (MBG-CSIC), Apartado 122, 15780, Santiago de Compostela, Spain
| | - Montserrat Díaz-Raviña
- Departamento de Bioquímica del Suelo, Misión Biológica de Galicia (MBG-CSIC), Apartado 122, 15780, Santiago de Compostela, Spain
| | - Manuel Arias-Estévez
- Área de Edafoloxía e Química Agrícola. Facultade de Ciencias. Universidade de Vigo, As Lagoas 1, 32004, Ourense. Spain
| | - David Fernández-Calviño
- Área de Edafoloxía e Química Agrícola. Facultade de Ciencias. Universidade de Vigo, As Lagoas 1, 32004, Ourense. Spain
| | - Vanesa Santás-Miguel
- Área de Edafoloxía e Química Agrícola. Facultade de Ciencias. Universidade de Vigo, As Lagoas 1, 32004, Ourense. Spain.
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Ciprofloxacin and Trimethoprim Adsorption/Desorption in Agricultural Soils. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19148426. [PMID: 35886277 PMCID: PMC9318069 DOI: 10.3390/ijerph19148426] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/05/2022] [Accepted: 07/07/2022] [Indexed: 12/10/2022]
Abstract
The current research focuses on the adsorption/desorption characteristics of the antibiotics ciprofloxacin (CIP) and trimethoprim (TRI) taking place in 17 agricultural soils, which are studied by means of batch-type experiments. The results show that adsorption was higher for CIP, with Freundlich KF values ranging between 1150 and 5086 Ln µmol1−n kg−1, while they were between 29 and 110 Ln µmol1−n kg−1 in the case of TRI. Other parameters, such as the Langmuir maximum adsorption capacity (qm(ads)), as well as the Kd parameter in the linear model and also the adsorption percentages, follow the same trend as KF. Desorption was lower for CIP (with KF(des) values in the range 1089–6234 Ln µmol1−n kg−1) than for TRI (with KF(des) ranging between 26 and 138 Ln µmol1−n kg−1). The higher irreversibility of CIP adsorption was also confirmed by its lower nF(des)/nF(ads) ratios, compared to TRI. Regarding soil characteristics, it was evidenced that nitrogen and carbon contents, as well as mineral fractions, had the highest influence on the adsorption/desorption process. These results can be considered relevant as regards the fate of both antibiotics when they reach the environment as pollutants and therefore could be considered in assessment procedures focused on environmental and public health aspects.
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