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Guidelines to Study the Adsorption of Pesticides onto Clay Minerals Aiming at a Straightforward Evaluation of Their Removal Performance. MINERALS 2021. [DOI: 10.3390/min11111282] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Natural and modified clay minerals have been extensively used for the adsorption/desorption of organic substances, especially pesticides, from waters and wastewater, aiming at pollution control and more efficient use of the herbicides through controlled release. While natural clay minerals efficiently remove organic cations such as paraquat and diquat, the adsorption of anionic or neutral species demands surface chemical modification with, for instance, quaternary ammonium salts containing long alkyl chains. Basic pesticides, on the other hand, are better absorbed in clay minerals modified with polycations. Kinetic studies and adsorption/desorption isotherms provide the parameters needed to evaluate the clay mineral’s adsorptive performance towards the pollutant target. However, the direct comparison of these parameters is complicated because the experimental conditions, the analytical techniques, the kinetic and isotherm models, and the numerical fitting method differ among the various studies. The free-energy-related Langmuir constant depends on the degree of site occupation; that is, it depends on the concentration window used to construct the adsorption isotherm and, consequently, on the analytical technique used to quantify the free concentrations. This paper reviews pesticides’ adsorption on natural and modified clay minerals and proposes guidelines for designing batch adsorption/desorption studies to obtain easily comparable and meaningful adsorption parameters. Articles should clearly describe the experimental conditions such as temperature, contact time, total concentration window, the solution to adsorbent ratio, the analytical technique, and its detection and quantification limits, besides the fitting models. Research should also evaluate the competitive effects of humic substances, colloidal inorganic particles, and ionic strength to emulate real-world adsorption experiments.
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Abstract
Hospital wastewater contains a complex mixture of bioactive substances and microorganisms that are deleterious to humans and aquatic animals. In this study, four antibiotics, namely, ofloxacin, ciprofloxacin, cefuroxime, and amoxicillin, respectively, from the wastewater of seven hospitals in Ho Chi Minh City, Vietnam, were monitored. The results revealed that the wastewater from these hospitals is contaminated with at least one of the antibiotics. In addition, the degradation capacity of the antibiotics by the wastewater treatment plant at one of the hospitals by the cold plasma technique was investigated. Furthermore, effects of the variation in pH, interelectrode distance, applied voltage, and reaction time on the removal efficiency were investigated in terms of the reduction in antibiotics concentration, COD, and ammonia. Ciprofloxacin, cefuroxime, COD, and ammonia were almost eliminated, while ofloxacin and amoxicillin were reduced by more than 72% under optimum conditions (initial pH of 10, reaction time of 15 min, applied voltage of 30 kV, and interelectrode distance of 10 mm). All of these factors affected the removal efficiency. The removal efficiency was most robust in the first 5 min, and it increased with the increase in the reaction time. However, the removal efficiency tended to saturate over time, while it decreased with the increase in the reaction time. With an applied voltage of 30 kV onwards, the removal efficiency was not significantly different. Most of the pollutants were predominately eliminated under slightly alkaline conditions (pH of ∼10). In addition, primary oxidants in the aqueous phase, such as O3, H2O2, and ⋅OH, were generated. Besides, the obtained results also revealed that the decomposition of ciprofloxacin and cefuroxime follows the first-order reaction kinetics; meanwhile, the third-order reaction kinetics was most likely for the decomposition of ofloxacin and amoxicillin.
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Cosgrove S, Jefferson B, Jarvis P. Pesticide removal from drinking water sources by adsorption: a review. ACTA ACUST UNITED AC 2019. [DOI: 10.1080/21622515.2019.1593514] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | - Bruce Jefferson
- Cranfield Water Science Institute, Cranfield University, Bedford, UK
| | - Peter Jarvis
- Cranfield Water Science Institute, Cranfield University, Bedford, UK
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Yuan M, Liu X, Li C, Yu J, Zhang B, Ma Y. A higher efficiency removal of neonicotinoid insecticides by modified cellulose-based complex particle. Int J Biol Macromol 2019; 126:857-866. [PMID: 30597243 DOI: 10.1016/j.ijbiomac.2018.12.157] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 12/13/2018] [Accepted: 12/17/2018] [Indexed: 11/17/2022]
Abstract
Cellulose as an eco-friendly material is extensive in the nature. In this study, modified cellulose-based complex particle (MCCP) was produced through hydrothermal carbonization with methacrylic acid in the stirring and sand bath circumstance. The activated modified carbon-based porous particle (AMCCP) was prepared by treating with potassium hydroxide at high temperature, showing higher efficiency in removing neonicotinoids than MCCP. The AMCCP was fully characterized via scanning electron microscopy, X-ray photoelectron spectroscopy and Brunauer-Emmett-Teller analysis. The Brunauer-Emmett-Teller analysis showed the prepared AMCCP has smaller aggregated particles with higher surface area than MCCP. The adsorption kinetic and the adsorption isotherm of AMCCP were studied, revealing that the pseudo-second-order kinetic model and the Langmuir model correlated with the experimental data better. The maximum adsorption capacity of AMCCP is 142.36 mg/g for acetamiprid. The adsorption process is spontaneous, favorable, and endothermic in nature. After five regeneration time, the adsorption efficiency of the AMCCP is still over 95%.
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Affiliation(s)
- Meng Yuan
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Xue Liu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Changsheng Li
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Jingyang Yu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Bingjie Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Yongqiang Ma
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.
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Gamba M, Lázaro-Martínez JM, Olivelli MS, Yarza F, Vega D, Curutchet G, Torres Sánchez RM. Kinetic and equilibrium adsorption of two post-harvest fungicides onto copper-exchanged montmorillonite: synergic and antagonistic effects of both fungicides' presence. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:2421-2434. [PMID: 30467755 DOI: 10.1007/s11356-018-3638-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 10/30/2018] [Indexed: 06/09/2023]
Abstract
The simultaneous adsorption of both imazalil (IMZ) and thiabendazole (TBZ) fungicides in a Cu2+-exchanged Mt was studied in this work. Kinetic studies were used to determine the rate law which describes the adsorption of individual fungicides onto the adsorbent. Adsorption isotherm of individual and combined fungicides was done to evaluate synergic or antagonistic effects. The Mt-Cu material considerably improved TBZ and/or IMZ adsorption from aqueous suspensions with respect to raw Mt, leading to removal efficiencies higher than 99% after 10 min of contact time for TBZ and IMZ Ci = 15 and 40 mg/L, respectively, when a solid dosage = 1 g/L was used. The adsorption sites involved were determined by a combination of X-ray diffraction (XRD) determinations and electron paramagnetic resonance (EPR), indicating that fungicides were bonded to Cu2+ cations, while the rate limiting step was the formation of coordination bonds. The adsorption mechanism proposed is that of ligand exchange between water and fungicide molecules in the metal coordination sphere. The single-crystal structure for the IMZ-Cu2+ complex indicated that four molecules were bounded to the copper centers, while two molecules of TBZ are bounded to copper explaining the higher IMZ uptake capacity for the Mt-Cu material. Graphical abstract.
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Affiliation(s)
- Martina Gamba
- CETMIC-CONICET-CCT La Plata-CIC, Camino Centenario y 506, (1897) M. B. Gonnet, La Plata, Argentina
| | - Juan M Lázaro-Martínez
- IQUIMEFA -CONICET, Facultad de Farmacia y Bioquímica, Departamento de Química Orgánica, Universidad de Buenos Aires, Junín 956 (1113), Buenos Aires, Argentina
| | - Melisa S Olivelli
- Escuela de Ciencia y Tecnología e Instituto de Investigación e Ingeniería Ambiental, CONICET, Universidad Nacional de San Martín, Av. 25 de Mayo y Francia, 1650 General San Martín, Buenos Aires, Argentina
| | - Florencia Yarza
- CETMIC-CONICET-CCT La Plata-CIC, Camino Centenario y 506, (1897) M. B. Gonnet, La Plata, Argentina
| | - Daniel Vega
- Departamento de Física de la Materia Condensada, Comisión Nacional de Energía Atómica, Av. Gral. Paz 1499 (1650) San Martín, Buenos Aires, Argentina
| | - Gustavo Curutchet
- Escuela de Ciencia y Tecnología e Instituto de Investigación e Ingeniería Ambiental, CONICET, Universidad Nacional de San Martín, Av. 25 de Mayo y Francia, 1650 General San Martín, Buenos Aires, Argentina
| | - Rosa M Torres Sánchez
- CETMIC-CONICET-CCT La Plata-CIC, Camino Centenario y 506, (1897) M. B. Gonnet, La Plata, Argentina.
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Jain SK, Shakil NA, Dutta A, Kumar J, Saini MK. Sorption kinetics and isotherm modelling of imidacloprid on bentonite and organobentonites. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2017; 52:326-337. [PMID: 28277079 DOI: 10.1080/03601234.2017.1281653] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Bentonite was modified by quaternary ammonium cations viz. cetytrimethylammonium (CTA), cetylpyridinium (CP), rioctylmethylammonium (TOM) and pcholine (PTC) at 100% cation exchange capacity of bentonite and was characterized by X-ray diffraction, CHNS elemental analyser and Fourier transform infrared spectroscopy. The sorption of imidacloprid on organobentonites/bentonite was studied by batch method. Normal bentonite could adsorb imidacloprid only upto 19.31-22.18% while all organobentonites except PTC bentonite (PTCB), enhanced its adsorption by three to four times. Highest adsorption was observed in case of TOM bentonite (TOMB) (76.94-83.16%). Adsorption kinetic data were fitted to pseudo-first-order, pseudo-second-order and intraparticle diffusion models. For normal bentonite data were best fitted to pseudo-first-order kinetic, while for organobentonites fitted to pseudo-second-order kinetics. Sorption data were analysed using Freundlich, Langmuir, Temkin and Dubinin-Radushkevich isotherm models. Data were well fitted to Freundlich adsorption isotherm. Product of Freundlich adsorption constant and heterogeneity parameter (Kf.1/n) was in following order: TOMB (301.87) > CTA bentonite (CTAB) (152.12) > CP bentonite (CPB) (92.58) > bentonite (27.25). Desorption study confirmed hysteresis and concentration dependence. The present study showed that the organobentonite could be a good sorbent for removal of imidacloprid from natural water sample also. Percentage adsorption and Distribution coefficient (mL g-1) value of different adsorbent was in following order: TOMB (74.85% and 297.54) > CTAB (55.78% and 126.15) > CPB (45.81% and 84.55) > bentonite (10.65% and 11.92).
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Affiliation(s)
- Shailesh K Jain
- a ICAR-Division of Agricultural Chemicals , Indian Agricultural Research Institute , New Delhi , India
| | - Najam A Shakil
- a ICAR-Division of Agricultural Chemicals , Indian Agricultural Research Institute , New Delhi , India
| | - Anirban Dutta
- a ICAR-Division of Agricultural Chemicals , Indian Agricultural Research Institute , New Delhi , India
| | - Jitendra Kumar
- a ICAR-Division of Agricultural Chemicals , Indian Agricultural Research Institute , New Delhi , India
- b ICAR-Directorate of Medicinal & Aromatic Plants Research , Anand , Gujarat , India
| | - Mukesh K Saini
- a ICAR-Division of Agricultural Chemicals , Indian Agricultural Research Institute , New Delhi , India
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Chang C, Chen M, Gao J, Luo J, Wu K, Dong T, Zhou K, He X, Hu W, Wu W, Lu C, Hang B, Meeker JD, Wang X, Xia Y. Current pesticide profiles in blood serum of adults in Jiangsu Province of China and a comparison with other countries. ENVIRONMENT INTERNATIONAL 2017; 102:213-222. [PMID: 28284820 DOI: 10.1016/j.envint.2017.03.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 03/01/2017] [Accepted: 03/02/2017] [Indexed: 05/27/2023]
Abstract
Although various pesticides were used globally, the pesticides profiles in human blood serum remain largely unknown. We determined pesticide exposure profiles using solid-phase extraction and gas chromatography tandem with triple quadrupole mass spectrometry in 200 human blood serum samples from the adult population in Jiangsu Province, China. A systematic and comprehensive literature review was carried out to identify the articles investigating pesticide exposure and compare exposure data. Of the 88 pesticides, 76 were found in the blood serum of the population in Jiangsu Province. To the best of our knowledge, 58 pesticides were reported in human blood serum for the first time, and among these pesticides, parathion-methyl, pyrimethanil, fluacrypyrim, simazine, cloquintocet-mexyl and barban were debatable in more than half of the samples. By statistical comparison of the blood serum levels of pesticides between this study and other countries, we found the levels of several organochlorine pesticides were significantly higher in the female population of Jiangsu Province. Health risks related to the pesticide profiling were then revealed, which identified higher carcinogenic toxicity and teratogenic toxicity risk in the female adults of Jiangsu Province caused by organochlorine pesticide exposure. This study not only provides a high-throughput pesticide screening method for future studies of the exposome, but also presents the first human data on exposure to a number of pesticides. It may provide a knowledge database for the risk assessment and management of the pesticides.
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Affiliation(s)
- Chunxin Chang
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Minjian Chen
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Wuxi Maternal and Child Health Hospital Affiliated to Nanjing Medical University, Wuxi 214002, China
| | - Jiawei Gao
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Jia Luo
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Keqin Wu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Tianyu Dong
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Kun Zhou
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Xiaowei He
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Weiyue Hu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Wei Wu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Chuncheng Lu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Bo Hang
- Department of Organismal Systems and Bioresilience, Biological Systems and Engineering Division, Lawrence Berkeley National Lab, Berkeley, CA 94549, USA
| | - John D Meeker
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, MI 48109, USA
| | - Xinru Wang
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Yankai Xia
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
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Narayanan N, Gupta S, Gajbhiye VT, Manjaiah KM. Optimization of isotherm models for pesticide sorption on biopolymer-nanoclay composite by error analysis. CHEMOSPHERE 2017; 173:502-511. [PMID: 28131920 DOI: 10.1016/j.chemosphere.2017.01.084] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 01/09/2017] [Accepted: 01/15/2017] [Indexed: 05/21/2023]
Abstract
A carboxy methyl cellulose-nano organoclay (nano montmorillonite modified with 35-45 wt % dimethyl dialkyl (C14-C18) amine (DMDA)) composite was prepared by solution intercalation method. The prepared composite was characterized by infrared spectroscopy (FTIR), X-Ray diffraction spectroscopy (XRD) and scanning electron microscopy (SEM). The composite was utilized for its pesticide sorption efficiency for atrazine, imidacloprid and thiamethoxam. The sorption data was fitted into Langmuir and Freundlich isotherms using linear and non linear methods. The linear regression method suggested best fitting of sorption data into Type II Langmuir and Freundlich isotherms. In order to avoid the bias resulting from linearization, seven different error parameters were also analyzed by non linear regression method. The non linear error analysis suggested that the sorption data fitted well into Langmuir model rather than in Freundlich model. The maximum sorption capacity, Q0 (μg/g) was given by imidacloprid (2000) followed by thiamethoxam (1667) and atrazine (1429). The study suggests that the degree of determination of linear regression alone cannot be used for comparing the best fitting of Langmuir and Freundlich models and non-linear error analysis needs to be done to avoid inaccurate results.
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Affiliation(s)
- Neethu Narayanan
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India.
| | - Suman Gupta
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
| | - V T Gajbhiye
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
| | - K M Manjaiah
- Division of Soil Science and Agricultural Chemistry, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
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