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Yang Y, Kang Z, Wang J, Xu G, Yu Y. Simultaneous achievement of removing bensulfuron-methyl and reducing CO 2 emission in paddy soil by Acinetobacter YH0317 immobilized boron-doping biochar. JOURNAL OF HAZARDOUS MATERIALS 2024; 467:133758. [PMID: 38350318 DOI: 10.1016/j.jhazmat.2024.133758] [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: 12/12/2023] [Revised: 01/22/2024] [Accepted: 02/07/2024] [Indexed: 02/15/2024]
Abstract
Herbicide residue and greenhouse gas (GHG) emission are two main problems in the paddy rice field, which have barely been considered simultaneously. Herein, a bensulfuron-methyl (BSM)-degrading bacterium named Acinetobacter YH0317 was successfully immobilized on two kinds of biochars and subsequently applied in the paddy soil. The BSM removal rate of Acinetobacter YH0317 immobilized boron-doping biochar (BBC) was 80.42% after 30 d, which was significantly higher than that of BBC (39.05%) and Acinetobacter YH0317 (49.10%) applied alone. BBC acting as an immobilized carrier could enable Acinetobacter YH0317 to work in harsh and complex environment and thus improve the BSM removal efficiency. The addition of Acinetobacter YH0317 immobilized BBC (TP5) significantly improved the soil physicochemical properties (pH, SOC, and NH4+-N) and increased the diversity of soil microbial community compared to control group (CG). Meanwhile, Acinetobacter YH0317 immobilized BBC reduced the CO2-equivalent emission by 41.0%. Metagenomic sequencing results revealed that the decreasing CO2 emission in TP5 was correlated with carbon fixation gene (fhs), indicating that fhs gene may play an important role in reducing CO2 emission. The work presents a practical and supportive technique for the simultaneous achievement on the soil purification and GHG emission reduction in paddy soil.
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Affiliation(s)
- Yang Yang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhichao Kang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian Wang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Guanghui Xu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Yong Yu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
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Yang Y, Kang Z, Wang J, Xu G, Yu Y. Enhanced removal efficiency of bensulfuron-methyl by a novel boron doping biochar-based Acinetobacter YH0317 at a lower temperature. BIORESOURCE TECHNOLOGY 2023; 386:129570. [PMID: 37506925 DOI: 10.1016/j.biortech.2023.129570] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/17/2023] [Accepted: 07/25/2023] [Indexed: 07/30/2023]
Abstract
Biochar-based bacteria are regarded as an efficient strategy for remediating organic pollutants in aquatic environments. Herein, a strain named Acinetobacter YH0317 that could degrade bensulfuron-methyl (BSM) at a lower temperature (15 °C) was isolated from a paddy rice field with long-term BSM application. Then Acinetobacter YH0317 was loaded on unmodified biochar (BC) and boron doping biochar (BBC). Results showed that BBC-based YH0317 significantly enhanced the removal efficiency of BSM (71.8-99.1%) compared with BC-based YH0317 (41.9-44.0%) and YH0317 alone (18.1-20.7%) in 24 h. BBC promoted the growth of YH0317 and secretion of extracellular secretions by providing a carrier and shelter for YH0317. The electrochemical analysis suggested BBC improved the electron transfer rate, which ultimately facilitated the removal of BSM. Hydroponic experiments indicated that BBC-based YH0317 effectively improved the growth of soybean. This work reports a novel BBC-based Acinetobacter YH0317 that could effectively remediate BSM contamination in the water environment.
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Affiliation(s)
- Yang Yang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhichao Kang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian Wang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Guanghui Xu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Yong Yu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
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Yang Y, Kang Z, Xu G, Yu Y. Enhanced adsorption performance of bensulfuron methyl with B doping biochar: Mechanism and density functional theory calculations. BIORESOURCE TECHNOLOGY 2023; 372:128657. [PMID: 36690217 DOI: 10.1016/j.biortech.2023.128657] [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: 12/08/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 06/17/2023]
Abstract
It is an urgent task to develop suitable adsorbents for the control of herbicide-bensulfuron methyl (BSM) in the paddy rice fields at cold regions. Herein, B doping biochar was synthesized via one-step method. Results showed that the adsorption capacity for BSM on 1.0BBC was significantly superior to BC at 15 °C. Besides, low temperature resistance, wide pH adaptability, stable adsorption performance and reusability test suggested that 1.0BBC have potential practical application. The mechanisms of BSM removal by 1.0BBC were mainly attributed to pore filling and π-π electron donor-acceptor (EDA) interaction. Theoretical calculations revealed that BCO2 could enhance the adsorption capacity by π-π EDA between BSM and adsorbent. Meanwhile, hydroponic experiment demonstrated that the toxicity to soybean after adsorption of BSM by 1.0BBC was within the safe range. This study proves that 1.0BBC is an easy-to-prepare adsorbent with promising application in BSM removal in the rice paddy fields at lower temperature.
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Affiliation(s)
- Yang Yang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhichao Kang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guanghui Xu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Yong Yu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
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Hu T, Gui Z, Gong J, Rong R, Wang X, Tan W, Wang Z, Xu X. INOS-mediated acute stomach injury and recovery in mice after oral exposure to halloysite nanotubes. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 258:113758. [PMID: 31881510 DOI: 10.1016/j.envpol.2019.113758] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 11/24/2019] [Accepted: 12/06/2019] [Indexed: 06/10/2023]
Abstract
Natural halloysite nanotubes (HNTs) with a hollow lumen are already applied in numerous fields and enter the environment in increasing quantities, which may have effects on animal and human health. However their in vivo toxicity in mammals is still largely unclear. The aim of this study is to assess acute oral toxicity of HNTs in the stomach of mice and recovery. Oral HNTs at low dose (5 mg HNTs/kg BW) for 30 days increased in daily food and water intake and promoted mouse growth with no obvious adverse effect on the stomach. The promotive effect on mouse growth disappeared after cessation of oral administration of the nanotubes. Oral HNTs for 30 days at high dose (50 mg HNTs/kg BW) induced Si and Al accumulation in the stomach, which caused oxidative stress, inflammation and iNOS-mediated damage in the organ. The damage in the stomach led to slight atrophic gastritis and reduced mouse growth. Oral HNTs-induced changes at high dose were not observed after a 30-days recovery period. The findings provided the evidence that oral HNTs-induced acute toxicity in the stomach was reversible. More importantly, this research showed that Al and Si were cleared out of the mice by hepatic excretion and renal excretion, respectively, during the recovery period. The results suggest that HNTs at low concentration in environments have no adverse effect on mice, while there are health risks to mice under severe contamination by HNTs.
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Affiliation(s)
- Tingting Hu
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, PR China
| | - Zongxiang Gui
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, PR China
| | - Jiachun Gong
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, PR China
| | - Rui Rong
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, PR China
| | - Xiaoqin Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, PR China
| | - Weihang Tan
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, PR China
| | - Ziyi Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, PR China
| | - Xiaolong Xu
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, PR China; National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230027, PR China.
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López-Piñeiro A, Peña D, Albarrán Á, Sánchez-Llerena J, Becerra D, Fernández D, Gómez S. Environmental fate of bensulfuron-methyl and MCPA in aerobic and anaerobic rice-cropping systems. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 237:44-53. [PMID: 30780054 DOI: 10.1016/j.jenvman.2019.02.058] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 01/31/2019] [Accepted: 02/10/2019] [Indexed: 05/23/2023]
Abstract
Bensulfuron-methyl (BM) and 4-chloro-2-methylphenoxyacetic acid (MCPA) are herbicides widely used in rice agroecosystems, and are commonly found in their environments, especially in water resources. The objective of this study was to evaluate the sorption-desorption, leaching, and dissipation of BM and MCPA under aerobic and anaerobic rice cropping conditions. For this purpose, a three-year field experiment was conducted in SW Spain using four management systems: aerobic with sprinkler irrigation and tillage (ST), sprinkler irrigation and no-tillage (SNT), long-term sprinkler irrigation and no-tillage (SNTLT), and anaerobic with flooding and tillage (FT). At the end of the experiment, the partition coefficients (Kd-values) in ST were (2.7, 3.1, and 3.9) and (1.2, 1.5, and 1.9) times significantly lower than the values in {SNT, SNTLT, and FT} for BM and MCPA, respectively. Greater sorption was related to lower values of soil pH for both herbicides and to higher contents in humic acids for BM and fulvic acids for MCPA. The persistence was much longer for BM (t1/2 = 26.9-52.1 days) than for MCPA (t1/2 = 1.54-21.1 days) in all management systems, and both herbicides' dissipation rates were generally greater under aerobic than under anaerobic conditions. The mobility of MCPA was much greater than that of BM. Compared with SNT and SNTLT, leaching losses of the applied BM were greater by 51% for ST, and of the applied MCPA by 55% and 99% for ST and FT, respectively. Therefore, only aerobic rice production with no-tillage in the short- or long-terms could be considered as alternative management strategies with which to reduce water contamination by BM and MCPA in rice-growing environments.
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Affiliation(s)
- Antonio López-Piñeiro
- Área de Edafología y Química Agrícola, Facultad de Ciencias - IACYS, Universidad de Extremadura, Avda de Elvas s/n, 06071, Badajoz, Spain
| | - David Peña
- Área de Edafología y Química Agrícola, Facultad de Ciencias - IACYS, Universidad de Extremadura, Avda de Elvas s/n, 06071, Badajoz, Spain.
| | - Ángel Albarrán
- Área de Producción Vegetal, Escuela de Ingenierías Agrarias - IACYS, Universidad de Extremadura, Ctra de Cáceres, 06071, Badajoz, Spain
| | - Javier Sánchez-Llerena
- Área de Edafología y Química Agrícola, Facultad de Ciencias - IACYS, Universidad de Extremadura, Avda de Elvas s/n, 06071, Badajoz, Spain
| | - Daniel Becerra
- Área de Edafología y Química Agrícola, Facultad de Ciencias - IACYS, Universidad de Extremadura, Avda de Elvas s/n, 06071, Badajoz, Spain
| | - Damián Fernández
- Área de Edafología y Química Agrícola, Facultad de Ciencias - IACYS, Universidad de Extremadura, Avda de Elvas s/n, 06071, Badajoz, Spain
| | - Soraya Gómez
- Área de Edafología y Química Agrícola, Facultad de Ciencias - IACYS, Universidad de Extremadura, Avda de Elvas s/n, 06071, Badajoz, Spain
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Geng Q, Li T, Wang X, Chu W, Cai M, Xie J, Ni H. The mechanism of bensulfuron-methyl complexation with β-cyclodextrin and 2-hydroxypropyl-β-cyclodextrin and effect on soil adsorption and bio-activity. Sci Rep 2019; 9:1882. [PMID: 30760785 PMCID: PMC6374456 DOI: 10.1038/s41598-018-38234-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 12/20/2018] [Indexed: 01/19/2023] Open
Abstract
In this work, the inclusion complexes of hydrophobic herbicide bensulfuron-methyl (BSM) with β-cyclodextrin (β-CD) and (2-hydroxypropyl)-β-CD (2-HP-β-CD) were prepared and characterized. Phase solubility study showed that both β-CD and 2-HP-β-CD increased the solubility of BSM. Three-dimensional structures of the inclusion complexes were simulated by the molecular docking method. The docking results indicated that guest BSM could enter into the cavities of host CDs, folded, and centrally aligned inside the inclusion complexes. The benzene ring of the guest molecule was close to the wide rim of the host molecules; the pyrimidine ring and side chains of the guest molecule were oriented toward the narrow rim of the host molecule. The inclusion complexes were successfully prepared by the coprecipitation method. The physiochemical characterization data of 1H NMR, FT-IR, XRD, and DSC showed that the guest and host molecules were well included. BSM had lower soil adsorption and higher herbicidal activity in the complexation form with β-CD or 2-HP-β-CD than in the pure form. The present study provides an approach to develop a novel CDs-based formulation for hydrophobic herbicides.
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Affiliation(s)
- Qianqian Geng
- College of Plant Protection, China Agricultural University, Beijing, P. R. China
| | - Tian Li
- College of Plant Protection, China Agricultural University, Beijing, P. R. China
| | - Xin Wang
- College of Plant Protection, China Agricultural University, Beijing, P. R. China
| | - Weijing Chu
- College of Plant Protection, China Agricultural University, Beijing, P. R. China
| | - Mengling Cai
- College of Plant Protection, China Agricultural University, Beijing, P. R. China
| | - Jingchan Xie
- College of Plant Protection, China Agricultural University, Beijing, P. R. China
| | - Hanwen Ni
- College of Plant Protection, China Agricultural University, Beijing, P. R. China.
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Woignier T, Clostre F, Fernandes P, Soler A, Rangon L, Sastre-Conde MI, Jannoyer ML. The pesticide chlordecone is trapped in the tortuous mesoporosity of allophane clays. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:21350-21361. [PMID: 28577145 DOI: 10.1007/s11356-017-9370-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 05/23/2017] [Indexed: 06/07/2023]
Abstract
Some volcanic soils like andosols contain short-range order nanoclays (allophane) which build aggregates with a tortuous and fractal microstructure. The aim of the work was to study the influence of the microstructure and mesoporosity of the allophane aggregates on the pesticide chlordecone retention in soils. Our study shows that the allophane microstructure favors pollutants accumulation and sequestration in soils. We put forth the importance of the mesoporous microstructure of the allophane aggregates for pollutant trapping in andosols. We show that the soil contamination increases with the allophane content but also with the mesopore volume, the tortuosity, and the size of the fractal aggregate. Moreover, the pore structure of the allophane aggregates at nanoscale favors the pesticide retention. The fractal and tortuous aggregates of nanoparticles play the role of nanolabyrinths. It is suggested that chlordecone storage in allophanic soils could be the result of the low transport properties (permeability and diffusion) in the allophane aggregates. The poor accessibility to the pesticide trapped in the mesopore of allophane aggregates could explain the lower pollutant release in the environment.
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Affiliation(s)
- Thierry Woignier
- Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale (IMBE), Aix Marseille Université, CNRS, IRD, Avignon Université, 13397, Marseille Cedex 20, France.
- IRD, UMR IMBE, Campus Agro Environnemental Caraibes B. P. 214 Petit Morne, 97235, Le Lamentin, Martinique.
| | - Florence Clostre
- Cirad, UPR fonctionnement agroécologique et performances des systèmes de culture horticoles, Campus Agro Environnemental Caraïbes B.P. 214 Petit Morne, 97232, Le Lamentin, Martinique
| | - Paula Fernandes
- Cirad, UPR fonctionnement agroécologique et performances des systèmes de culture horticoles, Campus Agro Environnemental Caraïbes B.P. 214 Petit Morne, 97232, Le Lamentin, Martinique
- Cirad UR HortSys, TA B-103/PS4, Boulevard de la Lironde, 34398, Montpellier Cedex5, France
| | - Alain Soler
- Cirad UR Banana, plantain and pinneapple cropping system, Campus Agro Environnemental Caraïbes B.P. 214 Petit Morne, 97232, Le Lamentin, Martinique
| | - Luc Rangon
- Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale (IMBE), Aix Marseille Université, CNRS, IRD, Avignon Université, 13397, Marseille Cedex 20, France
- IRD, UMR IMBE, Campus Agro Environnemental Caraibes B. P. 214 Petit Morne, 97235, Le Lamentin, Martinique
| | | | - Magalie Lesueur Jannoyer
- Cirad, UPR fonctionnement agroécologique et performances des systèmes de culture horticoles, Campus Agro Environnemental Caraïbes B.P. 214 Petit Morne, 97232, Le Lamentin, Martinique
- Cirad UR HortSys, TA B-103/PS4, Boulevard de la Lironde, 34398, Montpellier Cedex5, France
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Palma G, Jorquera M, Demanet R, Elgueta S, Briceño G, de la Luz Mora M. Urea Fertilizer and pH Influence on Sorption Process of Flumetsulam and MCPA Acidic Herbicides in a Volcanic Soil. JOURNAL OF ENVIRONMENTAL QUALITY 2016; 45:323-330. [PMID: 26828188 DOI: 10.2134/jeq2015.07.0358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The aim of this study was to evaluate the influence of urea fertilizer and pH on the sorption process of two acidic herbicides, flumetsulam (2',6'-difluoro-5-methyl[1,2,4]triazolo[1,5-a]pyrimidine-2-sulfonanilide) and MCPA (4-chloro--tolyloxyacetic acid), on an Andisol. Urea reduced the adsorption of MCPA but not that of flumetsulam. The Freundlich parameter of MCPA decreased from 8.5 to 5.1 mg L kg. This finding could be attributed to an increase in dissolved organic C due to an initial increase in soil pH for urea application. The higher acidic character of MCPA compared with that of flumetsulam produced a greater hydrolysis of urea, leading to a further pH increase. A marked effect of pH on the adsorption of both herbicides was observed. The organic C distribution coefficient () values for flumetsulam were in the range of 74 to 10 L kg, while those of MCPA were in the range of 208 to 45 L kg. In the kinetic studies, the pseudo-second-order model appeared to fit the data best ( > 0.994). The initial adsorption rates () ranged from 20.00 to 4.59 mg kg h for flumetsulam and from 125.00 to 25.60 mg kg hfor MCPA. Both herbicides were adsorbed rapidly during the first stage of the sorption process, and the rates of sorption were dependent on pH. The application of the Elovich and Weber-Morris models led us to conclude that mass transfer through the boundary layer and, to a lesser degree, intraparticle diffusion were influenced by the chemical character of the herbicide. These results suggest that urea application could increase leaching of acid herbicides in soils.
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Báez ME, Espinoza J, Silva R, Fuentes E. Sorption-desorption behavior of pesticides and their degradation products in volcanic and nonvolcanic soils: interpretation of interactions through two-way principal component analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:8576-85. [PMID: 25561264 DOI: 10.1007/s11356-014-4036-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Accepted: 12/22/2014] [Indexed: 06/04/2023]
Abstract
Sorption-desorption behavior of six pesticides and some degradation products was assessed on seven agricultural volcanic and nonvolcanic soils belonging to Andisol, Ultisol, Mollisol, and Alfisol orders. The global interpretation of sorption data was performed by principal component analysis. Results showed exceptionally high sorption of glyphosate and aminomethylphosphonic acid (AMPA) (the breakdown product) on volcanic soils (K f > 1500 μg(1 - 1 / n) mL(1 / n) g(-1)) related mainly to contents of amorphous aluminum oxides (Andisols) and crystalline minerals (Ultisols). The lower sorption on nonvolcanic soils was associated to low organic matter contents and lack of significant minerals. Metsulfuron-methyl and 3,5,6-trichloro-2-pyridinol (metabolite of chlorpyrifos) were weakly to substantially sorbed on Andisols and Ultisols, but the first one was not sorbed at pH > 6.4, including nonvolcanic soils. The metabolite of diazinon, 2-isopropyl-4-methyl-6-hydroxypyrimidine, was weakly sorbed on all soils (K f = 0.4 to 3.6 μg(1 - 1 / n) mL(1 / n) g(-1)). Acidic compounds would be lixiviated in Mollisols and Alfisols, but they could leach also in Andisols and Ultisols if they reach greater depths. Atrazine and deethylatrazine sorption was related to organic carbon content; therefore, they were weakly retained on nonvolcanic soils (K f = 0.7 to 2.2 μg(1 - 1 / n) mL(1 / n) g(-1)). Chlorpyrifos was highly sorbed on all soils reaching K OC values of >8000. Finally, the significant retention of chlorothalonil and diazinon on Mollisols and Alfisols in spite of their low OC contents showed the contribution of clay minerals in the sorption process.
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Affiliation(s)
- María E Báez
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Sergio Livingstone Pohlhammer 1007, 8380000, Santiago, Chile,
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Woignier T, Fernandes P, Soler A, Clostre F, Carles C, Rangon L, Lesueur-Jannoyer M. Soil microstructure and organic matter: keys for chlordecone sequestration. JOURNAL OF HAZARDOUS MATERIALS 2013; 262:357-364. [PMID: 24056248 DOI: 10.1016/j.jhazmat.2013.08.070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 08/22/2013] [Accepted: 08/26/2013] [Indexed: 06/02/2023]
Abstract
Past applications of chlordecone, a persistent organochlorine pesticide, have resulted in diffuse pollution of agricultural soils, and these have become sources of contamination of cultivated crops as well as terrestrial and marine ecosystems. Chlordecone is a very stable and recalcitrant molecule, mainly present in the solid phase, and has a strong affinity for organic matter. To prevent consumer and ecosystem exposure, factors that influence chlordecone migration in the environment need to be evaluated. In this study, we measured the impact of incorporating compost on chlordecone sequestration in andosols as a possible way to reduce plant contamination. We first characterized the transfer of chlordecone from soil to plants (radish, cucumber, and lettuce). Two months after incorporation of the compost, soil-plant transfers were reduced by a factor of 1.9-15 depending on the crop. Our results showed that adding compost modified the fractal microstructure of allophane clays thus favoring chlordecone retention in andosols. The complex structure of allophane and the associated low accessibility are important characteristics governing the fate of chlordecone. These results support our proposal for an alternative strategy that is quite the opposite of total soil decontamination: chlordecone sequestration.
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Affiliation(s)
- T Woignier
- IRD UMR 237 Institut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale PRAM B.P. 214 Petit Morne, 97232, Le Lamentin, Martinique; CNRS 7263 - Institut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale PRAM B.P. 214 Petit Morne, 97232, Le Lamentin, Martinique.
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Báez ME, Fuentes E, Espinoza J. Characterization of the atrazine sorption process on Andisol and Ultisol volcanic ash-derived soils: kinetic parameters and the contribution of humic fractions. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:6150-6160. [PMID: 23711282 DOI: 10.1021/jf400950d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Atrazine sorption was studied in six Andisol and Ultisol soils. Humic and fulvic acids and humin contributions were established. Sorption on soils was well described by the Freundlich model. Kf values ranged from 2.2-15.6 μg(1-1/n)mL(1/n)g⁻¹. The relevance of humic acid and humin was deduced from isotherm and kinetics experiments. KOC values varied between 221 and 679 mLg⁻¹ for these fractions. Fulvic acid presented low binding capacity. Sorption was controlled by instantaneous equilibrium followed by a time-dependent phase. The Elovich equation, intraparticle diffusion model, and a two-site nonequilibrium model allowed us to conclude that (i) there are two rate-limited phases in Andisols related to intrasorbent diffusion in organic matter and retarded intraparticle diffusion in the organo-mineral complex and that (ii) there is one rate-limited phase in Ultisols attributed to the mineral composition. The lower organic matter content of Ultisols and the slower sorption rate and mechanisms involved must be considered to assess the leaching behavior of atrazine.
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Affiliation(s)
- María E Báez
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Sergio Livingstone Pohlhammer 1007, Casilla 233, Santiago, Chile.
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Cáceres L, Escudey M, Fuentes E, Báez ME. Modeling the sorption kinetic of metsulfuron-methyl on Andisols and Ultisols volcanic ash-derived soils: kinetics parameters and solute transport mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2010; 179:795-803. [PMID: 20399011 DOI: 10.1016/j.jhazmat.2010.03.074] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2009] [Revised: 03/15/2010] [Accepted: 03/15/2010] [Indexed: 05/29/2023]
Abstract
Metsulfuron-methyl sorption kinetic was studied in Andisol and Ultisol soils in view of their distinctive physical and chemical properties: acidic pH and variable surface charge. Different kinetic models were applied to the experimental results. The pseudo-second-order model fitted sorption kinetics data better than the pseudo-first-order model. The rate constant and the initial rate constant values obtained through this model demonstrated the different behavior of metsulfuron-methyl in both kinds of soils, both parameters being the highest for Andisol. The application of Elovich equation, intraparticle diffusion model and a two-site nonequilibrium model (TSNE) allowed to conclude that: (i) the high organic matter content is the governing factor for Andisols where mass transfer across the boundary layer, and in a lesser degree, intraparticle diffusion were the two processes controlling sorption kinetic and (ii) the mineral composition was more relevant in Ultisols where rate was controlled almost exclusively by intraparticle diffusion into macropores and micropores. The slower sorption rate on Ultisols, the mechanism involved and the lower sorption capacity of this kind of soils must be taken into account to assess leaching behavior of this herbicide.
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Affiliation(s)
- Lizethly Cáceres
- Facultad de Ciencias Básicas, Universidad Metropolitana de Ciencias de la Educación, Av. José Pedro Alessandri 540, Santiago, Chile
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