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Sun H, Gao Y, Li J, Zou Y, Feng M, Huang X. Removal of Toxic Dyes and Paraquat by a Dual‐Functional Metal‐Organic Framework. ChemistrySelect 2022. [DOI: 10.1002/slct.202203826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hai‐Yan Sun
- Department: State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 350001 Fu Zhou China
- University of Chinese Academy of Sciences 350001 Fu Zhou China
| | - Yu‐Jie Gao
- Department: State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 350001 Fu Zhou China
| | - Ji‐Long Li
- Department: State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 350001 Fu Zhou China
| | - Yan‐Min Zou
- Department: State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 350001 Fu Zhou China
| | - Mei‐Ling Feng
- Department: State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 350001 Fu Zhou China
| | - Xiao‐Ying Huang
- Department: State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 350001 Fu Zhou China
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Hammami H, Mozafarjalali M, Hajiani M, Nassirli H. Removal of paraquat from aqueous solutions by plant extracts as an ecofriendly approach. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2022; 24:1222-1230. [PMID: 35037539 DOI: 10.1080/15226514.2021.2025037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Paraquat is a very water-soluble herbicide widely used in agricultural and nonagricultural lands. The removal of paraquat from polluted water is very essential. Hence, three experiments were arranged separately to investigate the ability of plant extracts include Aloe vera, Portulaca grandiflora, kalanchoe daigremontiana, Sedum rubotinctum, Brassica rapa var. rapa, Helxine soleirolii, Brassica oleracea var. capitata, Crassula ovate, Aptenia cordifolia, Tradescantia albiflora to the removal of paraquat (PQ) from water. In the 1st experiment, High-performance liquid chromatography was used to determine the removal rate of PQ by using plant extracts. In the 2nd and 3rd experiments, PQ solutions were subjected to plant extracts treatments and then spray on the leaves of littleseed canarygrass (Phalaris minor) under greenhouse and field conditions, respectively. In general, the results of these experiments revealed that all plant extracts resulted in higher PQ removal from water compared to control. The maximum removal of PQ was observed at pH 11, 25 °C, 30 Min, and 0.2 mL in the presence of plant extracts. In the presence of P. grandiflora, C. ovate, k. daigremontiana, A. cordifolia, H. soleirolii, Aloe vera, S. rubotinctum, B. oleracea var. capitata, B. rapa var. rapa, and T. albiflora plant extracts, PQ removal from water increased to 68.34%, 65.45%, 63.97%, 59.81%, 59.29%, 55.44%, 52.06%, 50.34%, 48.86%, and 46.44% under normal conditions and 79.71%, 78.61%, 78.00%, 75.83%, 74.66%, 72.12%, 71.57%, 71.02%, 69.35%, and 68.73% under optimum conditions, respectively. Results of the 2nd and 3rd experiments were demonstrated a decrease in PQ performance on littleseed canarygrass control. It can be concluded that plant extracts can reduce the residual of PQ in water bodies.
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Affiliation(s)
- Hossein Hammami
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Birjand, Birjand, Iran
| | - Maryam Mozafarjalali
- Department of Environmental Engineering, Faculty of Natural Resources and Environment, University of Birjand, Birjand, Iran
| | - Mahmood Hajiani
- Department of Environmental Engineering, Faculty of Natural Resources and Environment, University of Birjand, Birjand, Iran
| | - Hooriyeh Nassirli
- Pharmaceutical Research Center, Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences, Mashhad, Iran
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AlHousami T, Stojanov IJ, Deighan P, Rhoads DD, Sundararajan D, Lassetter J, Shamritsky Y, Kabani S, Noonan V. Diatoms: A novel cause of granulomatous inflammation of the head and neck. Oral Surg Oral Med Oral Pathol Oral Radiol 2020; 131:565-571. [PMID: 33187943 DOI: 10.1016/j.oooo.2020.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 08/17/2020] [Accepted: 10/11/2020] [Indexed: 11/20/2022]
Abstract
OBJECTIVE We report the first 4 cases of intraoral nonnecrotizing granulomatous foreign body reactions to diatoms, plausibly as a result of exogenous material introduced following iatrogenic or traumatic injury. STUDY DESIGN Clinical and histopathologic findings of 4 intraoral cases of nonnecrotizing granulomatous foreign body reaction to diatoms, single-celled algae belonging to the taxonomic phylum Bacillariophyta, are reported. RESULTS The lesions presented either in the jaws or in the soft tissue overlying the alveolar bone, in some instances mimicking an inflammatory lesion of odontogenic etiology. Microscopically, the lesions presented as nonnecrotizing granulomatous inflammation associated with either spherical and radially symmetric or rectangular and bilaterally symmetric diatomaceous foreign material. CONCLUSION The diagnosis of a diatom-associated foreign body reaction necessitates familiarization with the histopathologic features of these organisms to accurately characterize the nature of such lesions.
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Affiliation(s)
- Thabet AlHousami
- Department of Endodontics, Boston University Henry M. Goldman School of Dental Medicine, Boston, MA, USA; Department of Basic and Clinical Oral Sciences, Faculty of Dentistry, Umm Al-Qura University, Makkah, Saudi Arabia.
| | - Ivan J Stojanov
- Department of Oral and Maxillofacial Medicine and Diagnostic Sciences, Case Western Reserve University School of Dental Medicine, Cleveland, OH, USA; Department of Pathology, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | | | - Daniel D Rhoads
- Cleveland Clinic Lerner College of Medicine (CCLCM), Case Western Reserve University, Cleveland, OH, USA
| | - Devaki Sundararajan
- Division of Oral and Maxillofacial Pathology, Boston University Henry M. Goldman School of Dental Medicine, Boston, MA, USA
| | | | | | | | - Vikki Noonan
- Division of Oral and Maxillofacial Pathology, Boston University Henry M. Goldman School of Dental Medicine, Boston, MA, USA
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Solar Photo-Assisted Degradation of Bipyridinium Herbicides at Circumneutral pH: A Life Cycle Assessment Approach. Processes (Basel) 2020. [DOI: 10.3390/pr8091117] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This study investigated the degradation of the herbicides diquat (DQ) and paraquat (PQ) by a solar photo-Fenton process that is mediated by Fe(III)-oxalate complexes at circumneutral pH = 6.5 in compound parabolic collectors (CPC)-type reactors. The photo-Fenton process operates efficiently at acidic pH; however, circumneutral operation was key to overcome drawbacks, such as acidification and neutralization steps, reagent costs, and the environmental footprint of chemical auxiliaries. This work revealed a remarkable reduction of total organic carbon for PQ (87%) and DQ (80%) after 300 min (at ca. 875 kJ L−1). Phytotoxicity assays confirmed that the treatment led to a considerable increase in the germination index for DQ (i.e., from 4.7% to 55.8%) and PQ (i.e., from 16.5% to 59.7%) using Cucumis sativus seeds. Importantly, treatment costs (DQ = USD$8.05 and PQ = USD$7.72) and the carbon footprint of the process (DQ = 7.37 and PQ = 6.29 kg CO2-Eqv/m3) were within the ranges that were reported for the treatment of recalcitrant substances at acidic conditions in CPC-type reactors. Life cycle assessment (LCA) evidenced that H2O2 and electricity consumption are the variables with the highest environmental impact because they contribute with ca. 70% of the carbon footprint of the process. Under the studied conditions, a further reduction in H2O2 use is counterproductive, because it could impact process performance and effluent quality. On the other hand, the main drawback of the process (i.e., energy consumption) can be reduced by using renewable energies. The sensitivity study evidenced that carbon footprint is dependent on the energy share of the local electricity mix; therefore, the use of more renewable electrical energy sources, such as wind-power and photovoltaic, can reduce greenhouse gases emissions of the process an average of 26.4% (DQ = 5.57 and PQ = 4.51 kg CO2-Eqv/m3) and 78.4% (DQ = 3.72 and PQ = 2.65 kg CO2-Eqv/m3), respectively. Finally, from the economic and environmental points of view, the experimental results evidenced that photo-assisted treatment at circumneutral pH is an efficient alternative to deal with quaternary bipyridinium compounds.
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Kujlu R, Moslemzadeh M, Rahimi S, Aghayani E, Ghanbari F, Mahdavianpour M. Selecting the best stabilization/solidification method for the treatment of oil-contaminated soils using simple and applied best-worst multi-criteria decision-making method. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 263:114447. [PMID: 32283453 DOI: 10.1016/j.envpol.2020.114447] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 02/14/2020] [Accepted: 03/22/2020] [Indexed: 06/11/2023]
Abstract
Oil-contaminated soils resulted from drilling activities can cause significant damages to the environment, especially for living organisms. Treatment and management of these soils are the necessity for environmental protection. The present study investigates the field study of seven oil-contaminated soils treated by different stabilization/solidification (S/S) methods, and the selection of the best treated site and treatment method. In this study, first, the ratios of consumed binders to the contaminated soils (w/w) and the treatment times for each unit of treated soils were evaluated. The ratios of consumed binders to the contaminated soils were between 6 and 10% and the treatment times for each unit of treated soils were between 4.1 and 18.5 min/m3. Physicochemical characteristics of treated soils were also determined. Although S/S methods didn't change the water content of treated soils, they increased the porosity of soils. Unexpectedly, the cement-based S/S methods didn't increase the pH of the treated soils. The highest and the lowest leaching of petroleum hydrocarbons was belonging to S/S using diatomaceous earth (DE) and the combination of Portland cement, sodium silicate and DE (CS-DE), respectively. The best acid neutralization capacity was obtained for soils treated using the combination of Portland cement and sodium silicate (CS). Based on the best-worst multi-criteria decision-making method (BWM-MCDM), the soils treated using CS-DE was select as the best. The BWM-MCDM can be used as an effective tool for the selection of the best alternative in all areas of environmental decontamination.
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Affiliation(s)
- Rahele Kujlu
- Department of Environmental Health Engineering, Abadan Faculty of Medical Sciences, Abadan, Iran
| | - Mehrdad Moslemzadeh
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Somayeh Rahimi
- Department of Environmental Health Engineering, Abadan Faculty of Medical Sciences, Abadan, Iran
| | - Ehsan Aghayani
- Department of Environmental Health Engineering, Abadan Faculty of Medical Sciences, Abadan, Iran
| | - Farshid Ghanbari
- Department of Environmental Health Engineering, Abadan Faculty of Medical Sciences, Abadan, Iran
| | - Mostafa Mahdavianpour
- Department of Environmental Health Engineering, Abadan Faculty of Medical Sciences, Abadan, Iran.
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Calisto JS, Pacheco IS, Freitas LL, Santana LK, Fagundes WS, Amaral FA, Canobre SC. Adsorption kinetic and thermodynamic studies of the 2, 4 - dichlorophenoxyacetate (2,4-D) by the [Co-Al-Cl] layered double hydroxide. Heliyon 2019; 5:e02553. [PMID: 31872095 PMCID: PMC6911883 DOI: 10.1016/j.heliyon.2019.e02553] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 08/12/2019] [Accepted: 09/27/2019] [Indexed: 11/27/2022] Open
Abstract
[Co-Al-Cl] layered double hydroxide (LDH) obtained by co-precipitation at constant pH 8 presented a single phase in a hexagonal unit cell parameters similar to the hydrotalcite (JCPDS 14-191) belonging to the rhombohedral crystal system and space group R (-3)m . The adsorption kinetics of 2,4-D onto [Co-Al-Cl] LDH was better described by the Pseudo Second-Order (best adjust R2 = 0.9998 for 60 mg L-1 2,4-D adsorption). Intra-particle diffusion model was not the sole rate-controlling factor, indicating the adsorption of 2,4-D by the [Co-Al-Cl] LDH is a complex process for the experimental conditions performed, involving both boundary layer and intra-particle diffusion. The adsorption isotherm adjusted better to the Freundlich model (R2 = 0.9845) and the ΔH° value of - 51.18 kJ mol-1 indicated the predominance of the physical adsorption. The FT-IR spectrum of LDH after adsorption presented 2,4-D bands together with those of LDH and XRD showed an increase in the interlamellar distance (d 003) due to the intercalation of 2,4-D in the interlayer structure of the [Co-Al-Cl] LDH, corroborating inter and intra-particle adsorption data. Thus, [Co-Al-Cl] LDH, commonly used as electrodes in supercapacitors, can be effectively used as an adsorbent for the removal of 2,4-D from contaminated waters.
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Affiliation(s)
| | | | | | | | | | | | - Sheila C. Canobre
- LAETE - Laboratório de Armazenamento de Energia e Tratamento de Efluentes, Institute of Chemistry, UFU- Uberlândia Federal University, João Naves de Ávila Avenue, 2121, 38400-902, Uberlândia- Minas Gerais, Brazil
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Jodeh S, Hanbali G, Tighadouini S, Radi S, Hamed O, Jodeh D. Removal and extraction efficiency of Quaternary ammonium herbicides paraquat (PQ) from aqueous solution by ketoenol-pyrazole receptor functionalized silica hybrid adsorbent (SiNPz). BMC Chem 2019; 13:86. [PMID: 31384833 PMCID: PMC6661747 DOI: 10.1186/s13065-019-0599-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 06/29/2019] [Indexed: 11/21/2022] Open
Abstract
Pesticides and herbicides have been used extensively in agricultural practices to control pests and increase crop yields. Paraquat (PQT2+, 1,1-dimethyl-4,4-dipyridinium chloride) is one of the herbicide that belois classified as bipyridines and is used over the world. The objective of this study is to use ketoenol–pyrazole receptor functionalized silica hybrid as adsorbent for removal PQT2+ from aqueous solution. The adsorbent was synthesized, and characterized using scanning electron microscopy (SEM), nuclear magnetic resonance (NMR), Thermal analysis and other techniques. Different experimental parameters such as the effect of the amount of adsorbent, solution pH and temperatures and contact times were studied. Pseudo-order kinetics models were studied, and our data followed a pseudo second order. Experimental data were analyzed for both Langmuir and Freundlich models and the data fitted well with the Langmuir isotherm model. To understand the mechanism of adsorption, thermodynamic parameters like standard enthalpy, standard Gibbs free energy, and standard entropy were studied. The study indicated that the process is spontaneous, exothermic in nature and follow physisorption mechanisms. The novelty of this study showed surface of pyrazol-enol-imine-substituted silica (SiNPz) has the ability to highlight the surface designed for efficient removal of PQT2+, from aqueous solutions more than other studies. The study also showed that ketoenol–pyrazole receptor can be regenerated in five cycles using HNO3 without affecting its adsorption capacity.
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Affiliation(s)
- Shehdeh Jodeh
- 1Department of Chemistry, An-Najah National University, P. O. Box 7, Nablus, Palestine
| | - Ghadir Hanbali
- 1Department of Chemistry, An-Najah National University, P. O. Box 7, Nablus, Palestine
| | - Said Tighadouini
- LCAE, Department of Chemistry, Faculty of Sciences, Mohamed Premier University, 60000 Oujda, Morocco
| | - Smaail Radi
- LCAE, Department of Chemistry, Faculty of Sciences, Mohamed Premier University, 60000 Oujda, Morocco.,LCAE, Faculté des Sciences, Université Mohamed I, 60000 Oujda, Morocco
| | - Othman Hamed
- 1Department of Chemistry, An-Najah National University, P. O. Box 7, Nablus, Palestine
| | - Diana Jodeh
- 4Division of Plastic and Reconstructive Surgery, Johns Hopkins All Children's Hospital, St. Petersburg, FL USA
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Junthip J. Water-insoluble cyclodextrin polymer crosslinked with citric acid for paraquat removal from water. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2019. [DOI: 10.1080/10601325.2019.1586444] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Jatupol Junthip
- Faculty of Science and Technology, Nakhon Ratchasima Rajabhat University, Nakhon Ratchasima, Thailand
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Huang CF, Tu CW, Lee RH, Yang CH, Hung WC, Andrew Lin KY. Study of various diameter and functionality of TEMPO-oxidized cellulose nanofibers on paraquat adsorptions. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.01.023] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Junthip J, Promma W, Sonsupap S, Boonyanusith C. Adsorption of paraquat from water by insoluble cyclodextrin polymer crosslinked with 1,2,3,4-butanetetracarboxylic acid. IRANIAN POLYMER JOURNAL 2019. [DOI: 10.1007/s13726-019-00692-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Junthip J, Jumrernsuk N, Klongklaw P, Promma W, Sonsupap S. Removal of paraquat herbicide from water by textile coated with anionic cyclodextrin polymer. SN APPLIED SCIENCES 2018. [DOI: 10.1007/s42452-018-0102-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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12
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Rivera M, Ha B, Zamini L, Gamby S, Pitter D, Muhoro CN. N-methylcarbamate pesticides and their phenolic degradation products: hydrolytic decay, sequestration and metal complexation studies. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2018; 54:54-60. [PMID: 30460875 DOI: 10.1080/03601234.2018.1531659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 09/25/2018] [Accepted: 09/27/2018] [Indexed: 06/09/2023]
Abstract
We report on the rates of decomposition of a group of N-methylcarbamate (NMC) pesticides (carbaryl, carbofuran and propoxur) under pre-determined tropical field conditions. Rates of decomposition for three NMCs were determined at pH 7.08 and T = 20 °C and pH 7.70 and T = 33 °C respectively, as follows: carbaryl (78 days and 69 days); carbofuran (143 days and 83 days) and propoxur (116 days and 79 days). Investigation on methods for removal of NMCs and their phenolic decomposition products shows that activated charcoal outperforms zeolite, alumina, diatomaceous earth, cellulose and montmorillonite clay in the removal of both NMCs and phenols from aqueous solution. Furthermore, metal complexation studies on the NMCs and phenols showed that Fe (III) forms a complex with isopropoxyphenol (IPP) within which the Fe:IPP ratio is 1:3, indicative of the formation of a metal chelate complex with the formula Fe(IPP)3.
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Affiliation(s)
- Michael Rivera
- a Department of Chemistry , Towson University, Jess and Mildred Fisher College of Science and Mathematics , Towson , Maryland , USA
| | - Bao Ha
- a Department of Chemistry , Towson University, Jess and Mildred Fisher College of Science and Mathematics , Towson , Maryland , USA
| | - Leili Zamini
- a Department of Chemistry , Towson University, Jess and Mildred Fisher College of Science and Mathematics , Towson , Maryland , USA
| | - Sonja Gamby
- a Department of Chemistry , Towson University, Jess and Mildred Fisher College of Science and Mathematics , Towson , Maryland , USA
| | - Demar Pitter
- a Department of Chemistry , Towson University, Jess and Mildred Fisher College of Science and Mathematics , Towson , Maryland , USA
| | - Clare N Muhoro
- a Department of Chemistry , Towson University, Jess and Mildred Fisher College of Science and Mathematics , Towson , Maryland , USA
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β-Cyclodextrin–graphene oxide–diatomaceous earth material: preparation and its application for adsorption of organic dye. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-018-2168-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Otalvaro JO, Brigante M. Interaction of pesticides with natural and synthetic solids. Evaluation in dynamic and equilibrium conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:6707-6719. [PMID: 29260478 DOI: 10.1007/s11356-017-1020-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 12/11/2017] [Indexed: 06/07/2023]
Abstract
Interactions between pesticides (paraquat, glyphosate, 2,4-D, atrazine, and metsulfuron methyl) and soil organic and inorganic components have been studied in batch experiments by performing adsorption, dissolution, and chemical and photochemical degradation under different conditions. The obtained results confirm that the affinity of a pesticide to the solid surface depends on the nature of both and shows that each reactant strongly affects the mobility of the other one, e.g., anionic pesticides promote the dissolution of the solid humic acid but if this last is retained into the inorganic matrix enhances the adsorption of a cationic pesticide. Adsorption also seems to protect the bonded specie to be chemical degraded, such as shown in two pesticide/clay systems at constant pH. The use of mesoporous silicas could result in a good alternative for pesticide remediation. In fact, the solid shows high adsorption capacity towards paraquat and its modification with TiO2 nanoparticles increases not only the pesticide adsorption but also seems to catalyze its degradation under UV light to less-toxic metabolites. UV-VIS spectroscopy was relevant and novel in such sense. Electrostatic interactions, hydrogen and coordinative bonds formations, surface complexations and hydrophobic associations play a key role in the fate of mentioned pesticides on soil and ground/surface water environments.
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Affiliation(s)
- Julián Ortiz Otalvaro
- INQUISUR, Departamento de Química, Universidad Nacional del Sur (UNS)-CONICET, Av. Alem 1253, B8000CPB, Bahía Blanca, Argentina
| | - Maximiliano Brigante
- INQUISUR, Departamento de Química, Universidad Nacional del Sur (UNS)-CONICET, Av. Alem 1253, B8000CPB, Bahía Blanca, Argentina.
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, C1425FQB, Ciudad Autónoma de Buenos Aires, Argentina.
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Stromer BS, Woodbury B, Williams CF. Tylosin sorption to diatomaceous earth described by Langmuir isotherm and Freundlich isotherm models. CHEMOSPHERE 2018; 193:912-920. [PMID: 29874766 DOI: 10.1016/j.chemosphere.2017.11.083] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/13/2017] [Accepted: 11/16/2017] [Indexed: 06/08/2023]
Abstract
Tylosin, an antibiotic used for maintaining livestock health, is a macrolide structurally similar to a number of important, often prescribed human antibiotics. Because of this relationship, tylosin presents a potential threat of antimicrobial resistance from environmental buildup. This work investigated tylosin sorption to natural diatomaceous earth product (DE) and the types of physical interactions responsible for sorption. Most sorption processes were best described by the Langmuir model when compared with Freundlich model. Heat of sorption (ΔH) was 1.14 kJ mol-1 indicating a physisorption process. Change in entropy (ΔS) was 119 J mol-1. Sorption was evaluated from aqueous solution with various H+, KCl and Urea concentrations. In 0.01 M phosphate buffer (PB) pH 6.6, a maximum sorption capacity of 15 mg tylosin per g of DE was achieved. Changing the pH to 2.9 or 11.2 resulted in decreased sorption of tylosin (13 and 10 mg g-1, respectively). Addition of 1 M KCl to 0.01 M PB pH 6.6 decreased sorption of tylosin to DE with the maximum binding capacity of 7 mg g-1. Sorption in 1.0 M urea, 0.01 M phosphate buffer pH 6.6 showed a maximum sorption of 13 mg g-1. Based on these results, the sorption of tylosin appears to be a physisorption process, with charge-charge interactions being the mode of sorption at neutral pH and small contributions from secondary interactions. This information will be useful for developing effective strategies for mitigating tylosin and other antimicrobial's impact on the environment.
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Affiliation(s)
- Bobbi S Stromer
- U.S. Meat and Animal Research Center, Agricultural Research Service, United States Department of Agriculture, Clay Center, NE 68933, USA.
| | - Bryan Woodbury
- U.S. Meat and Animal Research Center, Agricultural Research Service, United States Department of Agriculture, Clay Center, NE 68933, USA
| | - Clinton F Williams
- U.S. Arid Lang Agricultural Research Center, Agricultural Research Service, United States Department of Agriculture, Maricopa, AZ 85138, USA
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Vinhal JO, Lage MR, Carneiro JWM, Lima CF, Cassella RJ. Modeling, kinetic, and equilibrium characterization of paraquat adsorption onto polyurethane foam using the ion-pairing technique. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 156:200-208. [PMID: 25846000 DOI: 10.1016/j.jenvman.2015.03.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 03/02/2015] [Accepted: 03/13/2015] [Indexed: 06/04/2023]
Abstract
We studied the adsorption of paraquat onto polyurethane foam (PUF) when it was in a medium containing sodium dodecylsulfate (SDS). The adsorption efficiency was dependent on the concentration of SDS in solution, because the formation of an ion-associate between the cationic paraquat and the dodecylsulfate anion was found to be a fundamental step in the process. A computational study was carried out to identify the possible structure of the ion-associate in aqueous medium. The obtained data demonstrated that the structure is probably formed from four units of dodecylsulfate bonded to one paraquat moiety. The results showed that 94% of the paraquat present in 45 mL of a solution containing 3.90 × 10(-5) mol L(-1) could be retained by 300 mg of PUF, resulting in the removal of 2.20 mg of paraquat. The experimental data were reasonably adjusted to the Freundlich isotherm and to the pseudo-second-order kinetic model. Also, the application of Morris-Weber and Reichenberg models indicated that both film-diffusion and intraparticle-diffusion processes were active during the control of the adsorption kinetics.
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Affiliation(s)
- Jonas O Vinhal
- Instituto de Química, Programa de Pós Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil; Departamento de Química, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil
| | - Mateus R Lage
- Instituto de Química, Programa de Pós Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil
| | - José Walkimar M Carneiro
- Instituto de Química, Programa de Pós Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil
| | - Claudio F Lima
- Departamento de Química, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil
| | - Ricardo J Cassella
- Instituto de Química, Programa de Pós Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil.
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17
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Gu Z, Gao M, Lu L, Liu Y, Yang S. Montmorillonite Functionalized with Zwitterionic Surfactant as a Highly Efficient Adsorbent for Herbicides. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b00438] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zheng Gu
- State Key
Laboratory of Heavy
Oil Processing, College of Science, China University of Petroleum, Beijing 102249, P. R. China
| | - Manglai Gao
- State Key
Laboratory of Heavy
Oil Processing, College of Science, China University of Petroleum, Beijing 102249, P. R. China
| | - Laifu Lu
- State Key
Laboratory of Heavy
Oil Processing, College of Science, China University of Petroleum, Beijing 102249, P. R. China
| | - Yuening Liu
- State Key
Laboratory of Heavy
Oil Processing, College of Science, China University of Petroleum, Beijing 102249, P. R. China
| | - Senfeng Yang
- State Key
Laboratory of Heavy
Oil Processing, College of Science, China University of Petroleum, Beijing 102249, P. R. China
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18
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Martins DA, Simões M, Melo L. ADSORPTION OF PARAQUAT DICHLORIDE TO KAOLIN PARTICLES AND TO MIXTURES OF KAOLIN AND HEMATITE PARTICLES IN AQUEOUS SUSPENSIONS. ACTA ACUST UNITED AC 2015. [DOI: 10.15544/jws.2015.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Deliberate contamination with pesticides is a potential risk to water security, due to the availability of these contaminants and the fact that they do not need special expertise to handle or apply. Adsorption of the herbicide paraquat from an aqueous solution to suspended particles of kaolin and kaolin/hematite mixture was investigated by kinetic and equilibrium assays, taking into consideration several parameters such as initial pH, sorbent dosage and agitation speed. The results showed that the adsorption process is quite fast, reaching an 18% reduction in paraquat concentration in a very short period of time. The addition of hematite particles to kaolin suspension had no apparent effect on the maximum amount of paraquat adsorbed. Kinetic parameters were determined by fitting the pseudo-second order model to the experimental data (correlation coefficients close to 1). Isotherm studies indicate an inhibitory effect, promoted by hematite particles, that was not detected in the adsorption assays. Equilibrium data was best adjusted using the Langmuir model which yielded higher correlation coefficient values and smaller normalized standard deviations.
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19
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Shirzad-Siboni M, Khataee A, Hassani A, Karaca S. Preparation, characterization and application of a CTAB-modified nanoclay for the adsorption of an herbicide from aqueous solutions: Kinetic and equilibrium studies. CR CHIM 2015. [DOI: 10.1016/j.crci.2014.06.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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Huang Y, Li C, Lin Z. EDTA-induced self-assembly of 3D graphene and its superior adsorption ability for paraquat using a teabag. ACS APPLIED MATERIALS & INTERFACES 2014; 6:19766-19773. [PMID: 25359004 DOI: 10.1021/am504922v] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In the past two years, three-dimensional graphene (3DG) was introduced to the environmental treatment area as a promising new material. Despite much progress in its synthesis and applications, 3DG is still limited in terms of green large-scale synthesis and practical environmental applications. In this work, a 3DG synthetic method was developed at 95 °C in an EDTA-induced self-assembly process. Because little EDTA was found to be consumed during synthesis, which might be due to its great stability and poor reducibility, 3DG with complete structure can be successively obtained by reusing the EDTA solution more than 10 times. Furthermore, 3DG was found to possess a superior adsorption capacity of 119 mg g(-1) (pH 6.0) for paraquat, a highly toxic herbicide with positive charges and a conjugated system of π bonds in its molecular structure. The adsorption capacity was much higher than those in classic paraquat adsorbents, such as clay and activated carbon. To address the problem of 3DG damage by stirring, a pyramid-shaped nylon teabag was adopted to protect the soft hydrogel during the repeated adsorption-desorption processes. After five cycles, the 3DG teabag still maintained 88% of the initial adsorption capacity. This facile method may be easily applied in other environmental treatment conditions.
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Affiliation(s)
- Yang Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou, Fujian 350002, People's Republic of China
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21
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Bello OS, Adegoke KA, Oyewole RO. Insights into the Adsorption of Heavy Metals from Wastewater using Diatomaceous Earth. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2014.910223] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Khoshnood M, Azizian S. Adsorption of 2,4-dichlorophenoxyacetic acid pesticide by graphitic carbon nanostructures prepared from biomasses. J IND ENG CHEM 2012. [DOI: 10.1016/j.jiec.2012.04.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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23
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Hakami O, Zhang Y, Banks CJ. Thiol-functionalised mesoporous silica-coated magnetite nanoparticles for high efficiency removal and recovery of Hg from water. WATER RESEARCH 2012; 46:3913-3922. [PMID: 22608609 DOI: 10.1016/j.watres.2012.04.032] [Citation(s) in RCA: 176] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 04/10/2012] [Accepted: 04/22/2012] [Indexed: 06/01/2023]
Abstract
The preparation and testing of thiol-functionalised silica-coated magnetite nanoparticles (TF-SCMNPs) is described. The characteristics of these particles are assessed at different stages in the production process using X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), and a magnetometer. The particles were found to be almost spherical with a uniform mesoporous structure with a pore size of ∼2.1nm. The particles were strongly responsive to an external magnetic field making separation from solution possible in less than 1min. The adsorption characteristics of the particles were quantified in a series of isotherm experiments using Hg(II) solution concentrations between 40 and 1000μg l(-1) at adsorbent concentrations of 4 and 8mg l(-1). The adsorption capacity was higher than for other commonly used adsorbents with 90% of Hg(II) removed during the first 5min and equilibrium in less than 15min. Both the Langmuir and Freundlich isotherm models were applied to the isotherm data and the maximum adsorption capacity was achieved when the ratio of adsorbent to adsorbate was low. Both temperature and pH had an effect on adsorption but when the TF-SCMNPs were used for removal of Hg(II) from tap water and bottled water, which contained other ions, there appeared to be no interference. Hg(II) could be successfully desorbed using thiourea in a 3M HCl solution; this did not result in the destruction of the nanoparticles and they could subsequently be reused without loss of their activity in repetitive adsorption tests.
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Affiliation(s)
- Othman Hakami
- Faculty of Engineering and the Environment, University of Southampton, Highfield, Southampton SO17 1BJ, UK.
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24
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Aivalioti M, Papoulias P, Kousaiti A, Gidarakos E. Adsorption of BTEX, MTBE and TAME on natural and modified diatomite. JOURNAL OF HAZARDOUS MATERIALS 2012; 207-208:117-127. [PMID: 21493002 DOI: 10.1016/j.jhazmat.2011.03.040] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 02/08/2011] [Accepted: 03/11/2011] [Indexed: 05/30/2023]
Abstract
The removal of BTEX (benzene, toluene, ethyl-benzene and m-,p-,o-xylenes), MTBE (methyl tertiary butyl ether) and TAME (tertiary amyl methyl ether) from aqueous solutions by raw, thermally, chemically and both chemically and thermally treated diatomite was studied, through batch adsorption experiments. In total, 14 different diatomite samples were created and tested. Selected physical characteristics of the adsorbents, such as specific surface area and pore volume distribution, were determined. Matrix and competitive adsorption effects were also explored. It was proved that the diatomite samples were effective in removing BTEX, MTBE and TAME from aqueous solutions, with the sample treated with HCl being the most effective, as far as its adsorption capacity and equilibrium time are concerned. Among the contaminants, BTEX appeared to have the strongest affinity, based on mass uptake by the diatomite samples. Matrix effects were proved to be strong, significantly decreasing the adsorption of the contaminants onto diatomite. The kinetics data proved a closer fit to the pseudo second order model, while the isotherm experimental data were a better fit to the Freundlich model. However, the latter produced values of the isotherm constant 1/n greater than one, indicating unfavorable adsorption.
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Affiliation(s)
- Maria Aivalioti
- Technical University of Crete, Department of Environmental Engineering, Laboratory of Toxic and Hazardous Waste Management, University Campus, P.C. 73100, Chania, Crete, Greece.
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25
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Aivalioti M, Pothoulaki D, Papoulias P, Gidarakos E. Removal of BTEX, MTBE and TAME from aqueous solutions by adsorption onto raw and thermally treated lignite. JOURNAL OF HAZARDOUS MATERIALS 2012; 207-208:136-146. [PMID: 21571423 DOI: 10.1016/j.jhazmat.2011.04.084] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Revised: 03/18/2011] [Accepted: 04/18/2011] [Indexed: 05/30/2023]
Abstract
The removal of BTEX (benzene, toluene, ethyl-benzene and m-,p-,o-xylenes), MTBE (methyl tertiary butyl ether) and TAME (tertiary amyl methyl ether) from aqueous solutions by raw (L(raw)) and thermally treated lignite at 250 C, 550 °C and 750 °C (L250, L550 and L750, respectively) was studied, through batch experiments. Selected physical characteristics of both raw and treated lignite such as surface area and pore volume distribution were determined. Competitive adsorption effects were also explored. It was proved that the examined lignite samples were quite effective in removing BTEX, MTBE and TAME from aqueous solutions, with sample treated at 750 °C being the most effective. Among the contaminants, BTEX appeared to have the strongest affinity, based on mass uptake by lignite samples. BTEX presence was found to significantly prevent MTBE and TAME adsorption on lignite (up to ∼55%). In all cases, equilibrium was achieved within 3h. The kinetics data proved a closer fit to the pseudo second order model, while the isotherm experimental data were a better fit to the Freundlich model, producing in some cases values of the isotherm constant 1/n less than one, indicating favorable adsorption. Respective batch experiments using commercial activated carbon (AC) were also conducted for comparison.
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Affiliation(s)
- Maria Aivalioti
- Technical University of Crete, Department of Environmental Engineering, Laboratory of Toxic and Hazardous Waste Management, University Campus, P.C. 73100, Chania, Crete, Greece.
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26
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Caliskan N, Kul AR, Alkan S, Sogut EG, Alacabey I. Adsorption of Zinc(II) on diatomite and manganese-oxide-modified diatomite: a kinetic and equilibrium study. JOURNAL OF HAZARDOUS MATERIALS 2011; 193:27-36. [PMID: 21764214 DOI: 10.1016/j.jhazmat.2011.06.058] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Revised: 06/07/2011] [Accepted: 06/22/2011] [Indexed: 05/31/2023]
Abstract
The removal of Zn(II) ions from aqueous solution was studied using natural and MnO(2) modified diatomite samples at different temperatures. The linear Langmuir, Freundlich and Dubinin-Radushkevich (D-R) adsorption equations were applied to describe the equilibrium isotherms. From the D-R model, the mean adsorption energy was calculated as >8 kJ mol(-1), indicating that the adsorption of Zn(II) onto diatomite and Mn-diatomite was physically carried out. In addition, the pseudo-first-order, pseudo-second-order and intraparticle diffusion models were used to determine the kinetic data. The experimental data were well fitted by the pseudo-second-order kinetic model. Thermodynamic parameters such as the enthalpy (ΔH(0)), Gibbs' free energy (ΔG(0)) and entropy (ΔS(0)) were calculated for natural and MnO(2) modified diatomite. These values showed that the adsorption of Zn(II) ions onto diatomite samples was controlled by a physical mechanism and occurred spontaneously.
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Affiliation(s)
- Necla Caliskan
- Department of Physical Chemistry, Faculty of Science, Yüzüncü Yıl University, Van 65080, Turkey.
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27
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Brigante M, Schulz PC. Adsorption of paraquat on mesoporous silica modified with titania: effects of pH, ionic strength and temperature. J Colloid Interface Sci 2011; 363:355-61. [PMID: 21843892 DOI: 10.1016/j.jcis.2011.07.061] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2011] [Revised: 07/13/2011] [Accepted: 07/15/2011] [Indexed: 10/17/2022]
Abstract
The adsorption of the herbicide paraquat (PQ(2+)) on the binary system titania-silica has been studied in batch experiments by performing adsorption isotherms under different conditions of pH, supporting electrolyte concentration, and temperature. Adsorption kinetic on the studied material has also been carried out and discussed. PQ(2+) adsorption is very low on the bare silica surface but important on the composed TiO(2)-SiO(2) adsorbent. In this last case, the adsorption increases by increasing pH and decreasing electrolyte concentration. There are no significant effects of temperature on the adsorption. The increase of the adsorption in TiO(2)-SiO(2) seems to be related to an increase in acid sites of the supported titania and to the homogenously dispersion of the TiO(2) nanoparticles over the silica support. The adsorption takes place by direct binding of PQ(2+) to TiO(2) leading to the formation of surface species of the type SiO(2)-TiO(2)-PQ(2+). Electrostatic interactions and charge-transfer and outer-sphere complexes formations seem to play a key role in the adsorption mechanism. The analysis of thermodynamic parameters suggests that the adsorption on TiO(2)-SiO(2) is endothermic and spontaneous in nature.
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Affiliation(s)
- Maximiliano Brigante
- INQUISUR, Departamento de Química, Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahía Blanca, Argentina.
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28
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Silva MDS, Cocenza DS, Grillo R, de Melo NFS, Tonello PS, de Oliveira LC, Cassimiro DL, Rosa AH, Fraceto LF. Paraquat-loaded alginate/chitosan nanoparticles: preparation, characterization and soil sorption studies. JOURNAL OF HAZARDOUS MATERIALS 2011; 190:366-74. [PMID: 21493003 DOI: 10.1016/j.jhazmat.2011.03.057] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 03/11/2011] [Accepted: 03/15/2011] [Indexed: 05/19/2023]
Abstract
Agrochemicals are amongst the contaminants most widely encountered in surface and subterranean hydrological systems. They comprise a variety of molecules, with properties that confer differing degrees of persistence and mobility in the environment, as well as different toxic, carcinogenic, mutagenic and teratogenic potentials, which can affect non-target organisms including man. In this work, alginate/chitosan nanoparticles were prepared as a carrier system for the herbicide paraquat. The preparation and physico-chemical characterization of the nanoparticles was followed by evaluation of zeta potential, pH, size and polydispersion. The techniques employed included transmission electron microscopy, differential scanning calorimetry and Fourier transform infrared spectroscopy. The formulation presented a size distribution of 635 ± 12 nm, polydispersion of 0.518, zeta potential of -22.8 ± 2.3 mV and association efficiency of 74.2%. There were significant differences between the release profiles of free paraquat and the herbicide associated with the alginate/chitosan nanoparticles. Tests showed that soil sorption of paraquat, either free or associated with the nanoparticles, was dependent on the quantity of organic matter present. The results presented in this work show that association of paraquat with alginate/chitosan nanoparticles alters the release profile of the herbicide, as well as its interaction with the soil, indicating that this system could be an effective means of reducing negative impacts caused by paraquat.
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Affiliation(s)
- Mariana dos Santos Silva
- Department of Environmental Engineering, São Paulo State University - UNESP, Avenida Três de Março, No. 511, CEP 18087-180, Sorocaba, SP, Brazil
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29
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Capasso R, De Martino A. Polymerin and lignimerin, as humic acid-like sorbents from vegetable waste, for the potential remediation of waters contaminated with heavy metals, herbicides, or polycyclic aromatic hydrocarbons. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:10283-10299. [PMID: 20828126 DOI: 10.1021/jf101574r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Polymerin is a humic acid-like polymer, which we previously recovered for the first time from olive oil mill waste waters (OMWW) only, and chemically and physicochemically characterized. We also previously investigated its versatile sorption capacity for toxic inorganic and organic compounds. Therefore, a review is presented on the removal, from simulated polluted waters, of cationic heavy metals [Cu(II), Zn, Cr(III)] and anionic ones [Cr(VI)) and As(V)] by sorption on this natural organic sorbent in comparison with its synthetic derivatives, K-polymerin, a ferrihydrite-polymerin complex and with ferrihydrite. An overview is also performed of the removal of ionic herbicides (2,4-D, paraquat, MCPA, simazine, and cyhalofop) by sorption on polymerin, ferrihydrite, and their complex and of the removal of phenanthrene, as a representative of polycyclic aromatic hydrocarbons, by sorption on this sorbent and its complexes with micro- or nanoparticles of aluminum oxide, pointing out the employment of all these sorbents in biobed systems, which might allow the remediation of water and protection of surface and groundwater. In addition, a short review is also given on the removal of Cu(II) and Zn from simulated contaminated waters, by sorption on the humic acid-like organic fraction, named lignimerin, which we previously isolated for the first time, in collaboration with a Chilean group, from cellulose mill Kraft waste waters (KCMWW) only. More specifically, the production methods and the characterization of the two natural sorbents (polymerin and lignimerin) and their derivatives (K-polymerin ferrihydrite-polymerin, polymerin-microAl(2)O(3) and -nanoAl(2)O(3), and H-lignimerin, respectively) as well as their sorption data and mechanism are reviewed. Published and original results obtained by the cyclic sorption on all of the considered sorbents for the removal of the above-mentioned toxic compounds from simulated waste waters are also reported. Moreover, sorption capacity and mechanism of the considered compounds on polymerins and lignimerins are evaluated in comparison with other known natural sorbents, especially of humic acid nature and other organic matter. Some of their technical aspects and relative costs are also considered. Finally, the possible large-scale application of the considered sorption systems for water remediation is briefly discussed.
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Affiliation(s)
- Renato Capasso
- Department of Soil, Plant, Environment and Animal Productions Sciences, Agriculture Faculty, University of Naples Federico II, Via Università 100, 80055 Portici, Naples, Italy.
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Ahmad T, Rafatullah M, Ghazali A, Sulaiman O, Hashim R, Ahmad A. Removal of pesticides from water and wastewater by different adsorbents: a review. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, ENVIRONMENTAL CARCINOGENESIS & ECOTOXICOLOGY REVIEWS 2010; 28:231-271. [PMID: 21069614 DOI: 10.1080/10590501.2010.525782] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this review article, the use of various low-cost adsorbents for the removal of pesticides from water and wastewater has been reviewed. Pesticides may appear as pollutants in water sources, having undesirable impacts to human health because of their toxicity, carcinogenicity, and mutagenicity or causing aesthetic problems such as taste and odors. These pesticides pollute the water stream and it can be removed very effectively using different low-cost adsorbents. It is evident from a literature survey of about 191 recently published papers that low-cost adsorbents have demonstrated outstanding removal capabilities for pesticides.
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Affiliation(s)
- Tanweer Ahmad
- School of Industrial Technology, Universiti Sains Malaysia, Malaysia
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31
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Seki H, Maruyama H, Shoji Y. Flocculation of diatomite by a soy protein-based bioflocculant. Biochem Eng J 2010. [DOI: 10.1016/j.bej.2010.04.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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32
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Aivalioti M, Vamvasakis I, Gidarakos E. BTEX and MTBE adsorption onto raw and thermally modified diatomite. JOURNAL OF HAZARDOUS MATERIALS 2010; 178:136-143. [PMID: 20133057 DOI: 10.1016/j.jhazmat.2010.01.053] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2009] [Revised: 01/07/2010] [Accepted: 01/09/2010] [Indexed: 05/28/2023]
Abstract
The removal of BTEX (benzene, toluene, ethyl-benzene and xylenes) and MTBE (methyl tertiary butyl ether) from aqueous solution by raw (D(R)) and thermally modified diatomite at 550, 750 and 950 degrees C (D(550), D(750) and D(950) respectively) was studied. Physical characteristics of both raw and modified diatomite such as specific surface, pore volume distribution, porosity and pH(solution) were determined, indicating important structural changes in the modified diatomite, due to exposure to high temperatures. Both adsorption kinetic and isotherm experiments were carried out. The kinetics data proved a closer fit to the pseudo-second order model. Maximum values for the rate constant, k(2), were obtained for MTBE and benzene (48.9326 and 18.0996 g mg(-1)h(-1), respectively) in sample D(550). The isotherm data proved to fit the Freundlich model more closely, which produced values of the isotherm constant 1/n higher than one, indicating unfavorable adsorption. The highest adsorption capacity, calculated through the values of the isotherm constant k(F), was obtained for MTBE (48.42 mg kg(-1) (mg/L)(n)) in sample D(950).
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Affiliation(s)
- Maria Aivalioti
- Technical University of Crete, Department of Environmental Engineering, Laboratory of Toxic and Hazardous Waste Management, University Campus, P.C. 73100, Chania, Crete, Greece
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33
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Green-Ruiz C. Effect of salinity and temperature on the adsorption of Hg(II) from aqueous solutions by a Ca-montmorillonite. ENVIRONMENTAL TECHNOLOGY 2009; 30:63-68. [PMID: 19213467 DOI: 10.1080/09593330802503859] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Use of clay minerals for removing mercury is an effective technology for the treatment of industrial wastewaters and can become an effective tool for the remediation of coastal ecosystems polluted with this metal. Calcic montmorillonite was employed for adsorbing Hg(II) ions from aqueous solutions at different conditions of salinity (0, 20 and 35 g NaCl L(-1)), temperature (15, 25 and 35 degrees C), and initial concentrations (0.25, 0.50, 1.00, 2.50, 5.00 and 10.00 mg Hg L(-1)). It was observed that 0.4 g dry weight of montmorillonite removed from 0.02 mg g(-1) (at 0.25 mg L(-1) of Hg(II)) to 0.68 mg g(-1) (at 10.0 mg L(-1) of Hg(II)) at 25 degrees C, salinity of 0 g NaCl L(-1) and pH of 6. The initial concentration of Hg(II) and salinity had an effect on the behaviour of the adsorption process, which was temperature independent. The data fit well the Freundlich adsorption isotherm, indicating that heterogeneous conditions prevail in this process.
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Affiliation(s)
- C Green-Ruiz
- Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnologia, Universidad Nacional Autónoma de México, Mazatlán, Sinaloa, Mexico.
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Tsai WT, Hsu HC, Su TY, Lin KY, Lin CM. Removal of basic dye (methylene blue) from wastewaters utilizing beer brewery waste. JOURNAL OF HAZARDOUS MATERIALS 2008; 154:73-78. [PMID: 18006225 DOI: 10.1016/j.jhazmat.2007.09.107] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2007] [Revised: 09/26/2007] [Accepted: 09/27/2007] [Indexed: 05/25/2023]
Abstract
In the work, the beer brewery waste has been shown to be a low-cost adsorbent for the removal of basic dye from the aqueous solution as compared to its precursor (i.e., diatomite) based on its physical and chemical characterizations including surface area, pore volume, scanning electron microscopy (SEM), and non-mineral elemental analyses. The pore properties of this waste were significantly larger than those of its raw material, reflecting that the trapped organic matrices contained in the waste probably provided additional adsorption sites and/or adsorption area. The results of preliminary adsorption kinetics showed that the diatomite waste could be directly used as a potential adsorbent for removal of methylene blue on the basis of its adsorption-biosorption mechanisms. The adsorption parameters thus obtained from the pseudo-second-order model were in accordance with their pore properties. From the results of adsorption isotherm at 298 K and the applicability examinations in treating industrial wastewater containing basic dye, it was further found that the adsorption capacities of diatomite waste were superior to those of diatomite, which were also in good agreement with their corresponding physical properties. From the results mentioned above, it is feasible to utilize the food-processing waste for removing dye from the industrial dying wastewater.
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Affiliation(s)
- Wen-Tien Tsai
- Graduate Institute of Bioresources, National Pingtung University of Science and Technology, Pingtung 912, Taiwan.
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Khazali O, Abu-El-Halawa R, Al-Sou'od K. Removal of copper(II) from aqueous solution by Jordanian pottery materials. JOURNAL OF HAZARDOUS MATERIALS 2007; 139:67-71. [PMID: 16870335 DOI: 10.1016/j.jhazmat.2006.06.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2006] [Revised: 05/21/2006] [Accepted: 06/05/2006] [Indexed: 05/11/2023]
Abstract
The aim of this work was to assess the possibility of removing some heavy metals from water by a low-cost adsorbent, like Jordanian raw pottery. Five types of raw and modified pottery materials have been investigated. The effects of initial metal concentration, agitation time, pH and temperature on the removal of Cu(II) were studied. A pseudo-first order was used to test the adsorption kinetics. In order to investigate the sorption isotherm, two equilibrium models, the Freundlich and Langmuir isotherms, were analyzed. The effect of solution pH on the adsorption onto pottery was studied in the pH range 1-5. The adsorption was exothermic at ambient temperature and the computation of the parameters, DeltaH, DeltaS and DeltaG, indicated the interactions to be thermodynamically favorable.
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Affiliation(s)
- Omar Khazali
- Department of Chemistry, Al al-Bayt University, Mafraq, Jordan
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