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Limonta G, Panti C, Fossi MC, Nardi F, Baini M. Exposure to virgin and marine incubated microparticles of biodegradable and conventional polymers modulates the hepatopancreas transcriptome of Mytilus galloprovincialis. JOURNAL OF HAZARDOUS MATERIALS 2024; 468:133819. [PMID: 38402680 DOI: 10.1016/j.jhazmat.2024.133819] [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: 12/05/2023] [Revised: 02/02/2024] [Accepted: 02/15/2024] [Indexed: 02/27/2024]
Abstract
Biodegradable polymers have been proposed as an alternative to conventional plastics to mitigate the impact of marine litter, but the research investigating their toxicity is still in its infancy. This study evaluates the potential ecotoxicological effects of both virgin and marine-incubated microparticles (MPs), at environmentally relevant concentration (0.1 mg/l), made of different biodegradable polymers (Polycaprolactone, Mater-Bi, cellulose) and conventional polymers (Polyethylene) on Mytilus galloprovincialis by using transcriptomics. This approach is increasingly being used to assess the effects of pollutants on organisms, obtaining data on numerous biological pathways simultaneously. Whole hepatopancreas de novo transcriptome sequencing was performed, individuating 972 genes differentially expressed across experimental groups compared to the control. Through the comparative transcriptomic profiling emerges that the preponderant effect is attributable to the marine incubation of MPs, especially for incubated polycaprolactone (731 DEGs). Mater-Bi and cellulose alter the smallest number of genes and biological processes in the mussel hepatopancreas. All microparticles, regardless of their polymeric composition, dysregulated innate immunity, and fatty acid metabolism biological processes. These findings highlight the necessity of considering the interactions of MPs with the environmental factors in the marine ecosystem when performing ecotoxicological evaluations. The results obtained contribute to fill current knowledge gaps regarding the potential environmental impacts of biodegradable polymers.
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Affiliation(s)
- Giacomo Limonta
- Department of Physical, Earth and Environmental Sciences, University of Siena, Via P.A. Mattioli, 4, Siena, Italy; National Biodiversity Future Center (NBFC), Palermo, Italy
| | - Cristina Panti
- Department of Physical, Earth and Environmental Sciences, University of Siena, Via P.A. Mattioli, 4, Siena, Italy; National Biodiversity Future Center (NBFC), Palermo, Italy.
| | - Maria Cristina Fossi
- Department of Physical, Earth and Environmental Sciences, University of Siena, Via P.A. Mattioli, 4, Siena, Italy; National Biodiversity Future Center (NBFC), Palermo, Italy
| | - Francesco Nardi
- National Biodiversity Future Center (NBFC), Palermo, Italy; Department of Life Sciences, University of Siena, Via A. Moro, 2, Siena, Italy
| | - Matteo Baini
- Department of Physical, Earth and Environmental Sciences, University of Siena, Via P.A. Mattioli, 4, Siena, Italy; National Biodiversity Future Center (NBFC), Palermo, Italy
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2
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Yan Y, Shen K, Fan W, Kang X, Lu Q. Single and Competitive Adsorption of Naphthalene, Phenanthrene, and Pyrene on Polystyrene Nanofibers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 38306395 DOI: 10.1021/acs.langmuir.3c03090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2024]
Abstract
In this investigation, polystyrene (PS) nanofibers were prepared by electrospinning for the adsorption of naphthalene (Nap), phenanthrene (Phe), and pyrene (Pyr) from an aqueous solution. Surface morphology and physicochemical characteristics of PS nanofibers were analyzed using Fourier transform infrared spectroscopy (FT-IR) and point-of-zero-charge calorimetry (pHpzc). The effects of pH, ion concentration, and temperature on the adsorption were also investigated. The adsorption mechanism of target pollutants on PS nanofibers was investigated by a batch adsorption method. The adsorption kinetic studies showed that the adsorption of the three polycyclic aromatic hydrocarbons (PAHs) on PS nanofibers conformed to the pseudo-second-order kinetic model in both single and ternary systems. Meanwhile, in a single system, the three PAHs adsorbed on nanofibers were controlled by both intraparticle diffusion and liquid film diffusion, whereas the adsorption of Nap in a ternary system was controlled mainly by intraparticle diffusion, and the adsorption of Phe and Pyr was controlled mainly by liquid film diffusion. The isotherm data indicated that the Freundlich model performed better than the Langmuir model for the adsorptions of Nap, Phe, and Pyr on PS nanofibers in both the single system and the ternary system. Due to competitive adsorption, the adsorption capacities of Nap and Pyr on PS nanofibers decreased from 105.816 and 19.098 mg g-1 in the single system to 23.626 and 12.126 mg g-1 in the ternary system, but the adsorption of Phe was not affected. π-π interactions and pore filling may be jointly involved in the adsorption of PAHs on PS nanofibers.
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Affiliation(s)
- Yan Yan
- School of Public Health of Southeast University, Laboratory of Environment and Biosafety Research Institute of Southeast University in Suzhou, Suzhou 215123, China
| | - Kangwei Shen
- China Key Laboratory of Child Development and Learning Science, Ministry of Education, School of Biological Sciences & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Wei Fan
- China Key Laboratory of Child Development and Learning Science, Ministry of Education, School of Biological Sciences & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Xuejun Kang
- China Key Laboratory of Child Development and Learning Science, Ministry of Education, School of Biological Sciences & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Qing Lu
- China Key Laboratory of Child Development and Learning Science, Ministry of Education, School of Biological Sciences & Medical Engineering, Southeast University, Nanjing 210096, China
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Betraoui A, Seddiki N, Souag R, Guerfi N, Semlali A, Aouak T, Aliouche D. Synthesis of New Hydrogels Involving Acrylic Acid and Acrylamide Grafted Agar-Agar and Their Application in the Removal of Cationic Dyes from Wastewater. Gels 2023; 9:499. [PMID: 37367168 DOI: 10.3390/gels9060499] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/15/2023] [Accepted: 06/15/2023] [Indexed: 06/28/2023] Open
Abstract
Polyacrylic Acid grafted Agar-agar (AAc-graf-Agar), and polyacrylamide grafted Agar-Agar (AAm-graf-Agar) have been synthesised by free radical polymerisation route initiated by ammonium peroxodisulphate (APS), the grafted polymers were characterised by FTIR, TGA and SEM methods. The swelling properties were studied in deionised water and saline solution at room temperature. The prepared hydrogels were examined by removing cationic methylene blue (MB) dye from the aqueous solution, in which the adsorption kinetics and isotherms models were also investigated. It was found that the pseudo-second-order and Langmuir equations are the most suitable for the different sorption processes. The maximum dye adsorption capacity was 1035.96 mg∙g-1 for AAc-graf-Agar in pH medium 12 and 1015.7 mg∙g-1 for AAm-graf-Agar in neutral pH medium. This indicates that the AAc-graf-Agar hydrogel could be an excellent adsorbent for removing MB from aqueous solutions.
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Affiliation(s)
- Amina Betraoui
- Laboratory of Polymers Treatment and Forming, F.S.I., M'Hamed Bougara University, Boumerdes 35000, Algeria
| | - Nesrinne Seddiki
- Laboratory of Polymers Treatment and Forming, F.S.I., M'Hamed Bougara University, Boumerdes 35000, Algeria
| | - Rafika Souag
- Research Unit, Materials, Processes and Environment (URMPE), University of Boumerdes, Boumerdes 35000, Algeria
| | - Nabila Guerfi
- Centre de Recherche en Technologiedes Semi-Conducteurs pour l'Energétique (CRTSE), 02 Bd Frantz Fanon BP140, 7 Merveilles, Algiers 16038, Algeria
| | - Abdelhabib Semlali
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Taieb Aouak
- Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Djamel Aliouche
- Laboratory of Polymers Treatment and Forming, F.S.I., M'Hamed Bougara University, Boumerdes 35000, Algeria
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4
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Hu X, Yu Q, Gatheru Waigi M, Ling W, Qin C, Wang J, Gao Y. Microplastics-sorbed phenanthrene and its derivatives are highly bioaccessible and may induce human cancer risks. ENVIRONMENT INTERNATIONAL 2022; 168:107459. [PMID: 35964535 DOI: 10.1016/j.envint.2022.107459] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/22/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
Microplastics (MPs) are ubiquitous in environmental media and human diets and can enrich organic contaminants, including polycyclic aromatic hydrocarbons (PAHs) and their derivatives. The bioaccessibilities and triggering cancer risks of MP-sorbed PAHs and PAH derivatives are closely linked with human health, which, however, were rarely focused on. This study explored the sorption behaviors of phenanthrene (PHE) and PHE derivatives on polyethylene (PE), polypropylene (PP), and polystyrene (PS) MPs, and assessed their bioaccessibilities in gastrointestinal fluids as well as their inducing human cancer risks. PE MPs harbored the highest sorption capacity, secondly the PP MPs, then the PS ones. Sorption of PHE and PHE derivatives on MPs was positively correlated with their hydrophobicities. The bioaccessibilities of sorbed PHE and PHE derivatives could reach 53.59 %±0.46 %-90.28 %±0.92 % in gastrointestinal fluids and 81.34 %±0.77 %-98.72 %±1.44 % in gastrointestinal fluids with the addition of Tenax (more close to the bioavailability). The hydrophobicities also controlled the bioaccessibilities of PHE and PHE derivatives in gastric fluids, and those in intestinal fluids with Tenax for PS MPs. The incremental lifetime cancer risk (ILCR) values for PHE, PHE-Cl, and PHE-NO2 on MPs at tested concentrations were all higher than the USEPA-suggested safety limit (10-6), and most of them were even higher than 10-4, which thus indicates serious cancer risks. This study promoted our understanding of the potential health threats posed by organic pollutant-bearing MPs in the environment.
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Affiliation(s)
- Xiaojie Hu
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Qing Yu
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Michael Gatheru Waigi
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Wanting Ling
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Chao Qin
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Jian Wang
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Yanzheng Gao
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
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5
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Amorini M, Riboni N, Pesenti L, Dini VA, Pedrini A, Massera C, Gualandi C, Bianchi F, Pinalli R, Dalcanale E. Reusable Cavitand-Based Electrospun Membranes for the Removal of Polycyclic Aromatic Hydrocarbons from Water. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2104946. [PMID: 34755446 DOI: 10.1002/smll.202104946] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 10/13/2021] [Indexed: 06/13/2023]
Abstract
The removal of toxic and carcinogenic polycyclic aromatic hydrocarbons (PAHs) from water is one of the most intractable environmental problems nowadays, because of their resistance to remediation. This work introduces a highly efficient, regenerable membrane for the removal of PAHs from water, featuring excellent filter performance and pH-driven release, thanks to the integration of a cavitand receptor in electrospun polyacrylonitrile (PAN) fibers. The role of the cavitand receptor is to act as molecular gripper for the uptake/release of PAHs. To this purpose, the deep cavity cavitand BenzoQxCav is designed and synthetized and its molecular structure is elucidated via X-Ray diffraction. The removal efficiency of the new adsorbent material toward the 16 priority PAHs is demonstrated via GC-MS analyses at ng L-1 concentration. A removal efficiency in the 32%, to 99% range is obtained. The regeneration of the membrane is performed by exploiting the pH-driven conformational switching of the cavitand between the vase form, where the PAHs uptake takes place, to the kite one, where the PAHs release occurs. The absorbance and regeneration capability of the membrane are successfully tested in four uptake/release cycles and the morphological stability.
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Affiliation(s)
- Mattia Amorini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale and INSTM UdR Parma, Università di Parma, Parco Area delle Scienze 17/A, Parma, 43123, Italy
| | - Nicolò Riboni
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale and INSTM UdR Parma, Università di Parma, Parco Area delle Scienze 17/A, Parma, 43123, Italy
| | - Lucia Pesenti
- Dipartimento di Chimica "G. Ciamician" and INSTM UdR Bologna, Università di Bologna, Via Selmi 2, Bologna, 40126, Italy
| | - Valentina Antonia Dini
- Dipartimento di Chimica "G. Ciamician" and INSTM UdR Bologna, Università di Bologna, Via Selmi 2, Bologna, 40126, Italy
| | - Alessandro Pedrini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale and INSTM UdR Parma, Università di Parma, Parco Area delle Scienze 17/A, Parma, 43123, Italy
| | - Chiara Massera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale and INSTM UdR Parma, Università di Parma, Parco Area delle Scienze 17/A, Parma, 43123, Italy
| | - Chiara Gualandi
- Dipartimento di Chimica "G. Ciamician" and INSTM UdR Bologna, Università di Bologna, Via Selmi 2, Bologna, 40126, Italy
| | - Federica Bianchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale and INSTM UdR Parma, Università di Parma, Parco Area delle Scienze 17/A, Parma, 43123, Italy
| | - Roberta Pinalli
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale and INSTM UdR Parma, Università di Parma, Parco Area delle Scienze 17/A, Parma, 43123, Italy
| | - Enrico Dalcanale
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale and INSTM UdR Parma, Università di Parma, Parco Area delle Scienze 17/A, Parma, 43123, Italy
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6
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Minkina T, Vasilyeva G, Popileshko Y, Bauer T, Sushkova S, Fedorenko A, Antonenko E, Pinskii D, Mazarji M, Ferreira CSS. Sorption of benzo[a]pyrene by Chernozem and carbonaceous sorbents: comparison of kinetics and interaction mechanisms. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2022; 44:133-148. [PMID: 33909189 DOI: 10.1007/s10653-021-00945-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 04/19/2021] [Indexed: 06/12/2023]
Abstract
Benzo[a]pyrene (BaP) is a polycyclic aromatic hydrocarbon, highly persistent and toxic and a widespread environmental pollutant. Although various technologies have been developed to remove BaP from the environment, its sorption through solid matrixes has received increasing attention due to cost-effectiveness. The present research compares the adsorption capacity of Haplic Chernozem, granular activated carbon and biochar in relation to BaP from water solution. Laboratory experiments with different initial BaP concentrations in the liquid phase and different ratios of the solid and liquid phases show that Freundlich model describes well the adsorption isotherms of BaP by the soil and both sorbents. Moreover, the BaP isotherm sorption by the Haplic Chernozem is better illustrated by the Freundlich model than the Langmuir equation. The results reveal that the sorption capacity of the carbonaceous adsorbents at a ratio 1:20 (solid to liquid phases) is orders of magnitude higher (13 368 ng mL-1 of activated carbon and 3 578 ng mL-1 of biochar) compared to the soil (57.8 ng mL-1). At the ratio of 0.5:20, the adsorption capacity of the carbonaceous sorbents was 17-45 times higher than that of the soil. This is due to the higher pore volume and specific surface area of the carbonaceous sorbents than soil particles, assessed through scanning electron microscopy. The sorption kinetic of BaP by Chernozem was compared with the adsorption kinetics by the carbonaceous sorbents. Results indicate that the adsorption dynamic involves two steps. The first one is associated with a fast BaP adsorption on the large available surface and inside macro- and meso-pores of the sorbent particles of the granular activated carbon and biochar. Then, the adsorption is followed by a slower process of BaP penetration into the microporous space and/or redistribution into a hydrophobic fraction. The effectiveness of the sorption process depends on both the sorbent properties and the solvent competition. Overall, the granular activated carbon and biochar are highly effective adsorbents for BaP, whereas the Haplic Chernozem has a rather limited capacity to remove BaP from contaminated solutions.
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Affiliation(s)
- Tatiana Minkina
- Southern Federal University, Rostov-on-Don, 344090, Russian Federation
| | - Galina Vasilyeva
- Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, 142290, Russian Federation
| | - Yana Popileshko
- Southern Federal University, Rostov-on-Don, 344090, Russian Federation
| | - Tatiana Bauer
- Southern Federal University, Rostov-on-Don, 344090, Russian Federation
| | - Svetlana Sushkova
- Southern Federal University, Rostov-on-Don, 344090, Russian Federation
| | - Aleksey Fedorenko
- Southern Federal University, Rostov-on-Don, 344090, Russian Federation
| | - Elena Antonenko
- Southern Federal University, Rostov-on-Don, 344090, Russian Federation
| | - David Pinskii
- Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, 142290, Russian Federation
| | - Mahmoud Mazarji
- Southern Federal University, Rostov-on-Don, 344090, Russian Federation.
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Negrete-Bolagay D, Zamora-Ledezma C, Chuya-Sumba C, De Sousa FB, Whitehead D, Alexis F, Guerrero VH. Persistent organic pollutants: The trade-off between potential risks and sustainable remediation methods. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 300:113737. [PMID: 34536739 DOI: 10.1016/j.jenvman.2021.113737] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 06/13/2023]
Abstract
Persistent Organic Pollutants (POPs) have become a very serious issue for the environment because of their toxicity, resistance to conventional degradation mechanisms, and capacity to bioconcentrate, bioaccumulate and biomagnify. In this review article, the safety, regulatory, and remediation aspects of POPs including aromatic, chlorinated, pesticides, brominated, and fluorinated compounds, are discussed. Industrial and agricultural activities are identified as the main sources of these harmful chemicals, which are released to air, soil and water, impacting on social and economic development of society at a global scale. The main types of POPs are presented, illustrating their effects on wildlife and human beings, as well as the ways in which they contaminate the food chain. Some of the most promising and innovative technologies developed for the removal of POPs from water are discussed, contrasting their advantages and disadvantages with those of more conventional treatment processes. The promising methods presented in this work include bioremediation, advanced oxidation, ionizing radiation, and nanotechnology. Finally, some alternatives to define more efficient approaches to overcome the impacts that POPs cause in the hydric sources are pointed out. These alternatives include the formulation of policies, regulations and custom-made legislation for controlling the use of these pollutants.
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Affiliation(s)
- Daniela Negrete-Bolagay
- School of Biological Sciences and Engineering, Yachay Tech University, 100119, Urcuquí, Ecuador.
| | - Camilo Zamora-Ledezma
- Tissue Regeneration and Repair: Orthobiology, Biomaterials & Tissue Engineering Research Group, UCAM - Universidad Católica de Murcia, Avda. Los Jerónimos 135, Guadalupe, 30107, Murcia, Spain.
| | - Cristina Chuya-Sumba
- School of Biological Sciences and Engineering, Yachay Tech University, 100119, Urcuquí, Ecuador.
| | - Frederico B De Sousa
- Laboratório de Sistemas Poliméricos e Supramoleculares, Physics and Chemistry Institute, Federal University of Itajubá, 37500-903, Itajubá, Brazil.
| | - Daniel Whitehead
- Department of Chemistry, Clemson University, Clemson, SC, 29634, USA.
| | - Frank Alexis
- School of Biological Sciences and Engineering, Yachay Tech University, 100119, Urcuquí, Ecuador.
| | - Victor H Guerrero
- Department of Materials, Escuela Politécnica Nacional, Ladrón de Guevara E11-253, Quito, 170525, Ecuador.
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Soberman MJ, Farnood RR, Tabe S. Functionalized powdered activated carbon electrospun nanofiber membranes for adsorption of micropollutants. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117461] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Frescura LM, Pereira HA, da Silva FV, de Menezes BB, Hilgemman M, Lazzaretti AP, do Nascimento PC, da Rosa MB. A Comparative Study Between High Density Polyethylene, Polyurethane Foam and Amberlite XAD-2 in the Removal of Different PAHs. Polycycl Aromat Compd 2018. [DOI: 10.1080/10406638.2018.1545680] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Hercules Abie Pereira
- Department of Chemistry, Federal University of Santa Maria – UFSM, Santa Maria, Brazil
| | - Fábio Vieira da Silva
- Department of Chemistry, Federal University of Santa Maria – UFSM, Santa Maria, Brazil
| | | | - Maurício Hilgemman
- Center of Exact Sciences and Technology University Center UNIVATES, Lajeado, Brazil
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10
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Nisticò R, Cesano F, Franzoso F, Magnacca G, Scarano D, Funes IG, Carlos L, Parolo ME. From biowaste to magnet-responsive materials for water remediation from polycyclic aromatic hydrocarbons. CHEMOSPHERE 2018; 202:686-693. [PMID: 29602101 DOI: 10.1016/j.chemosphere.2018.03.153] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 03/21/2018] [Accepted: 03/22/2018] [Indexed: 06/08/2023]
Abstract
Composted urban biowaste-derived substances (BBS-GC) are used as carbon sources for the preparation of carbon-coated magnet-sensitive nanoparticles obtained via co-precipitation method and the subsequent thermal treatment at 550 °C under nitrogen atmosphere. A multitechnique approach has been applied to investigate the morphology, magnetic properties, phase composition, thermal stability of the obtained magnet-sensitive materials. In particular, pyrolysis-induced modifications affecting the BBS-GC/carbon shell were highlighted. The adsorption capacity of such bio-derivative magnetic materials for the removal of hydrophobic contaminants such as polycyclic aromatic hydrocarbons was evaluated in order to verify their potential application in wastewater remediation process. The promising results suggest their use as a new generation of magnet-responsive easily-recoverable adsorbents for water purification treatments.
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Affiliation(s)
- Roberto Nisticò
- University of Torino, Department of Chemistry, Via P. Giuria 7, 10125 Torino, Italy; Polytechnic of Torino, Department of Applied Science and Technology DISAT, C.so Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Federico Cesano
- University of Torino, Department of Chemistry, Via P. Giuria 7, 10125 Torino, Italy; NIS Interdepartment Centre, Via P. Giuria 7, 10125 Torino, Italy
| | - Flavia Franzoso
- University of Torino, Department of Chemistry, Via P. Giuria 7, 10125 Torino, Italy
| | - Giuliana Magnacca
- University of Torino, Department of Chemistry, Via P. Giuria 7, 10125 Torino, Italy; NIS Interdepartment Centre, Via P. Giuria 7, 10125 Torino, Italy
| | - Domenica Scarano
- University of Torino, Department of Chemistry, Via P. Giuria 7, 10125 Torino, Italy; NIS Interdepartment Centre, Via P. Giuria 7, 10125 Torino, Italy
| | - Israel G Funes
- Instituto de Investigación en Toxicología Ambiental y Agrobiotecnología, CITAAC (CONICET-UNCo), Facultad de Ingeniería, Universidad Nacional Del Comahue, Buenos Aires 1400, 8300 Neuquén, Argentina
| | - Luciano Carlos
- Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas, PROBIEN (CONICET-UNCo), Facultad de Ingeniería, Universidad Nacional Del Comahue, Buenos Aires 1400, 8300 Neuquén, Argentina
| | - Maria E Parolo
- Instituto de Investigación en Toxicología Ambiental y Agrobiotecnología, CITAAC (CONICET-UNCo), Facultad de Ingeniería, Universidad Nacional Del Comahue, Buenos Aires 1400, 8300 Neuquén, Argentina.
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11
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Long W, Liu H, Yan X, Fu L. Preparation of new nano magnetic material Fe3O4@g-C3N4 and good adsorption performance on uranium ion. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1757-899x/322/2/022019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Bhadra BN, Song JY, Lee SK, Hwang YK, Jhung SH. Adsorptive removal of aromatic hydrocarbons from water over metal azolate framework-6-derived carbons. JOURNAL OF HAZARDOUS MATERIALS 2018; 344:1069-1077. [PMID: 30216966 DOI: 10.1016/j.jhazmat.2017.11.057] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 11/27/2017] [Accepted: 11/28/2017] [Indexed: 06/08/2023]
Abstract
Metal azolate framework-6 (MAF-6) was pyrolyzed at 1000°C to yield MOF-derived carbons (MCs). The obtained MCs were used to eliminate aromatic hydrocarbons, including polyaromatic hydrocarbons (PAHs; e.g., naphthalene (NAP), anthracene (ATC), and pyrene (PRN)) and benzene (BZ) from water via adsorption. The adsorption results over the MCs were compared with that of pristine MAF-6 and commercial activated carbon (AC). MC obtained after 24h (MC-24) exhibited a remarkable adsorption efficiency compared to that of the other MCs (obtained after different durations), MAF-6, and AC. For example, MC-24 led to adsorptions of NAP around 17 and 2.5 times those of pristine MAF-6 and AC, respectively. Or, the maximum adsorption capacities (Q0) of MAF-6, AC and MC-24 for NAP were 14, 104 and 237mg/g, respectively. Moreover, Q0 values of MC-24 for ATC and PRN were also very high of 284 and 307mg/g, respectively. Based on the properties of PAHs and the hydrophobicity of MC-24, hydrophobic interaction was suggested as the main mechanism for the adsorption of PAHs and BZ. In addition, MC-24 can be recycled by washing with acetone with little loss in performance. Therefore, MC-24 is recommended as a competitive adsorbent for aromatic hydrocarbon removal from water.
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Affiliation(s)
- Biswa Nath Bhadra
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, Daegu 41566, South Korea
| | - Ji Yoon Song
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, Daegu 41566, South Korea
| | - Su-Kyung Lee
- Research Group for Nanocatalysts, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, South Korea; Department of Chemistry, Korea Advanced of Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Young Kyu Hwang
- Research Group for Nanocatalysts, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, South Korea; Department of Advanced Materials and Chemical Engineering, University of Science and Technology (UST), 217 Gajeong-Ro, Yuseong, Daejeon 34113, South Korea
| | - Sung Hwa Jhung
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, Daegu 41566, South Korea.
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Sabah E, Ouki S. Mechanistic insight into pyrene removal by natural sepiolites. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:21680-21692. [PMID: 28756601 DOI: 10.1007/s11356-017-9524-1] [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: 01/11/2017] [Accepted: 06/12/2017] [Indexed: 06/07/2023]
Abstract
This paper investigates the sorption characteristics and mechanisms of pyrene onto two types of natural sepiolite-brown (B-Sep) and white (W-Sep). The effects of relevant properties such as clay content, surface area, pore diameter and volume, divalent cations, and organic carbon content were investigated by single component batch adsorption systems. The results suggest that pyrene has high affinity for both sepiolite and its sorption behavior could be mainly affected by exchangeable strongly hydrated cations such as Ca2+ and H2O in the zeolite-like channels and by open channel defects (OCD) structures but no so much by the large number of Si-OH groups located on the sepiolite's basal surfaces. Mesoporosity rather than surface area largely controls the sorption capacity and intensity of both sepiolites. This is shown by the increase in pore volume that exhibited the greatest increase in BET surface area. Particle size and morphological changes of both sepiolites following pyrene adsorption determined by FE-SEM showed that the sepiolite fibers are much longer than their widths, which are only several laths (several nanometers). This is a result of growth, mostly along the c-axis, at the expense of the diffusion of pyrene molecules through aqueous solution. As a consequence, a significant fibrous morphology is produced following the adsorption of pyrene by both sepiolites.
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Affiliation(s)
- Eyüp Sabah
- Department of Mining Engineering, Faculty of Engineering, Afyon Kocatepe University, 03200, Afyonkarahisar, Turkey.
| | - Sabeha Ouki
- Department of Civil and Environmental Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, UK
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Smol M, Włodarczyk-Makuła M. The Effectiveness in the Removal of PAHs from Aqueous Solutions in Physical and Chemical Processes: A Review. Polycycl Aromat Compd 2016. [DOI: 10.1080/10406638.2015.1105828] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Marzena Smol
- The Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, Krakow, Poland
| | - Maria Włodarczyk-Makuła
- Faculty of Environmental Engineering and Biotechnology, Czestochowa University of Technology, Czestochowa, Poland
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Lamichhane S, Bal Krishna KC, Sarukkalige R. Polycyclic aromatic hydrocarbons (PAHs) removal by sorption: A review. CHEMOSPHERE 2016; 148:336-53. [PMID: 26820781 DOI: 10.1016/j.chemosphere.2016.01.036] [Citation(s) in RCA: 211] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 12/01/2015] [Accepted: 01/09/2016] [Indexed: 05/27/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are organic micro pollutants which are persistent compounds in the environment due to their hydrophobic nature. Concerns over their adverse effects in human health and environment have resulted in extensive studies on various types of PAHs removal methods. Sorption is one of the widely used methods as PAHs possess a great sorptive ability into the solid media and their low aqueous solubility property. Several adsorbent media such as activated carbon, biochar, modified clay minerals have been largely used to remove PAHs from aqueous solution and to immobilise PAHs in the contaminated soils. According to the past studies, very high removal efficiency could be achieved using the adsorbents such as removal efficiency of activated carbon, biochar and modified clay mineral were 100%, 98.6% and >99%, respectively. PAHs removal efficiency or adsorption/absorption capacity largely depends on several parameters such as particle size of the adsorbent, pH, temperature, solubility, salinity including the production process of adsorbents. Although many studies have been carried out to remove PAHs using the sorption process, the findings have not been consolidated which potentially hinder to get the correct information for future study and to design the sorption method to remove PAHs. Therefore, this paper summarized the adsorbent media which have been used to remove PAHs especially from aqueous solutions including the factor affecting the sorption process reported in 142 literature published between 1934 and 2015.
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Affiliation(s)
- Shanti Lamichhane
- Department of Civil Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - K C Bal Krishna
- Department of Civil Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia; Institute for Infrastructure Engineering, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.
| | - Ranjan Sarukkalige
- Department of Civil Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
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Li X, Tong D, Allinson G, Jia C, Gong Z, Liu W. Adsorption of Pyrene onto the Agricultural By-Product: Corncob. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2016; 96:113-119. [PMID: 26573838 DOI: 10.1007/s00128-015-1687-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 10/26/2015] [Indexed: 06/05/2023]
Abstract
The adsorption behavior of pyrene on corncob was studied to provide a theoretical basis for the possible use of this material as an immobilized carrier for improving the bioremediation of PAH-contaminated soil. The results were as follows. Kinetic experiments showed that the adsorption processes obeyed a pseudo-second-order model. The intraparticle diffusion of Weber-Morris model fitting showed that the film and intraparticle diffusions were the key rate-limiting processes, and the adsorption process mainly consisted of three steps: boundary layer diffusion and two intra-particle diffusions. Experimental adsorption data for pyrene were successfully described by the adsorption-partition equilibrium model. The maximum adsorption capacity at 25°C was 214.8 μg g(-1). The adsorption contribution decreased significantly when the Ce/Sw (the equilibrium concentration/solubility in water) was higher than 1. Adsorption decreased with increased temperature. Based on the above results, the corncob particles could be helpful in the bioremediation of pyrene-contaminated soil.
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Affiliation(s)
- Xiaojun Li
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China.
| | - Dongli Tong
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Graeme Allinson
- Centre for Environmental Sustainability and Remediation (EnSuRe), RMIT University, Melbourne, VIC, 3001, Australia
- Australia-China Joint Research Centre on River Basin Management (Water Resources and Water Quality), University of Melbourne, Melbourne, VIC, Australia
| | - Chunyun Jia
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China.
| | - Zongqing Gong
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Wan Liu
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
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Wang LN, Xin CZ, Liu WT, Xia XL, He SQ, Liu H, Zhu CS. Electrospun PET/PEG Fibrous Membrane with Enhanced Mechanical Properties and Hydrophilicity for Filtration Applications. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2015. [DOI: 10.1007/s13369-015-1828-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hassan S, Sayour H, El Azab W, Mansour M. Synthesis and Characterization of Molecularly Imprinted Nanoparticle Polymers for Selective Separation of Anthracene. J DISPER SCI TECHNOL 2015. [DOI: 10.1080/01932691.2015.1089514] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Xie H, Chen Y, Wang C, Shi W, Zuo L, Xu H. The removal of fluoranthene by Agaricus bisporus immobilized in Ca-alginate modified by Lentinus edodes nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra04419g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fruiting bodies of Agaricus bisporus (A. bisporus) were entrapped in Ca-alginate modified by Lentinus edodes nanoparticles (CA-LENP) to adsorb and biodegrade fluoranthene (FLU) efficiently from an aqueous solution in a fluidized bed bioreactor.
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Affiliation(s)
- Han Xie
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
| | - Yijiao Chen
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
| | - Can Wang
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
| | - Wenjin Shi
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
| | - Lei Zuo
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
| | - Heng Xu
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
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Xi Z, Chen B. The effect of structural compositions on the biosorption of phenanthrene and pyrene by tea leaf residue fractions as model biosorbents. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:3318-3330. [PMID: 24234757 DOI: 10.1007/s11356-013-2266-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 10/21/2013] [Indexed: 06/02/2023]
Abstract
To enhance the removal efficiency of polycyclic aromatic hydrocarbons (PAHs) by natural biosorbent, sorption of phenanthrene and pyrene onto raw and modified tea leaves as a model biomass were investigated. Tea leaves were treated using Soxhlet extraction, saponification, and acid hydrolysis to yield six fractions. The structures of tea leaf fractions were characterized by elemental analysis, Fourier transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM). The amorphous cellulose components regulated the sorption kinetics, capacity, and mechanism of biomass fractions. The adsorption kinetics fit well to pseudo-second-order model and isotherms followed the Freundlich equation. By the consumption of the amorphous cellulose under acid hydrolysis, both the aliphatic moieties and aromatic domains contributed to total sorption, thus sorption capacities of the de-sugared fractions were dramatically increased (5–20-fold for phenanthrene and 8–36-fold for pyrene). All de-sugared fractions exhibited non-linear sorption due to strong specific interaction between PAHs and exposed aromatic domains of biosorbent, while presenting a relative slow rate because of the condensed domain in de-sugared samples. The availability of strong sorption phases (aromatic domains) in the biomass fractions were controlled by polar polysaccharide components, which were supported by the FTIR, CHN, and SEM data.
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21
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Dai Y, Niu J, Yin L, Xu J, Sun K. Enhanced sorption of perfluorooctane sulfonate (PFOS) on carbon nanotube-filled electrospun nanofibrous membranes. CHEMOSPHERE 2013; 93:1593-1599. [PMID: 24001664 DOI: 10.1016/j.chemosphere.2013.08.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 07/26/2013] [Accepted: 08/05/2013] [Indexed: 06/02/2023]
Abstract
Multi-walled carbon nanotube-filled electrospun nanofibrous membranes (MWCNT-ENFMs) were prepared by electrospinning. The addition of MWCNTs (0.5 wt.% vs. ENFMs) doubled the specific surface area and tensile strength of the ENFMs. The MWCNT-ENFMs were used to adsorb perfluorooctane sulfonate (PFOS) in aqueous solutions. The sorption kinetics results showed that the sorption rate of PFOS onto the MWCNT-ENFMs was much higher than the sorption rate of PFOS onto the pure ENFMs control, and the pseudo-second-order model (PSOM) described the sorption kinetics well. The sorption isotherms indicated that the sorption capacity of the MWCNT-ENFMs for PFOS (16.29±0.26 μmol g(-1)) increased approximately 18 times, compared with the pure ENFMs (0.92±0.06 μmol g(-1)). Moreover, the solution pH significantly affected the sorption efficiency and sorption mechanism. The MWCNT-ENFMs were negatively charged from pH 2.0-10.0, but the electrostatic repulsion between the MWCNT-ENFMs and PFOS was overcome by the hydrophobic interactions between PFOS and the MWCNTs or nanofibers. The strong hydrophobic interactions between PFOS and the MWCNTs played a dominant role in the sorption process. For the pure ENFMs, the electrostatic repulsion was conquered by the hydrophobic interactions between PFOS and the nanofibers at pH>3.1. In addition to the hydrophobic interactions, an electrostatic attraction between PFOS and the pure ENFMs was involved in the sorption process at pH<3.1.
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Affiliation(s)
- Yunrong Dai
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China
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Kayaci F, Aytac Z, Uyar T. Surface modification of electrospun polyester nanofibers with cyclodextrin polymer for the removal of phenanthrene from aqueous solution. JOURNAL OF HAZARDOUS MATERIALS 2013; 261:286-294. [PMID: 23959248 DOI: 10.1016/j.jhazmat.2013.07.041] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Revised: 07/05/2013] [Accepted: 07/18/2013] [Indexed: 05/27/2023]
Abstract
Surface modified electrospun polyester (PET) nanofibers with cyclodextrin polymer (CDP) were produced (PET/CDP). CDP formation onto electrospun PET nanofibers was achieved by polymerization between citric acid (CTR, crosslinking agent) and cyclodextrin (CD). Three different types of native CD (α-CD, β-CD and γ-CD) were used to form CDP. Water-insoluble crosslinked CDP coating was permanently adhered onto the PET nanofibers. SEM imaging indicated that the nanofibrous structure of PET mats was preserved after CDP surface modification process. PET/CDP nanofibers have shown rougher/irregular surface and larger fiber diameter when compared to untreated PET nanofibers. The surface analyses of PET/CDP nanofibers by XPS elucidated that CDP was present on the fiber surface. DMA analyses revealed the enhanced mechanical properties for PET/CDP where PET/CDP nanofibers have shown higher storage modulus and higher glass transition temperature compared to untreated PET nanofibers. The surface area of the PET/CDP nanofibers investigated by BET measurements showed slight decrease due to the presence of CDP coating compared to pristine PET nanofibers. Yet, it was observed that PET/CDP nanofibers were more efficient for the removal of phenanthrene as a model polycyclic aromatic hydrocarbon (PAH) from aqueous solution when compared to pristine PET nanofibers. Our findings suggested that PET/CDP nanofibers can be a very good candidate as a filter material for water purification and waste treatment owing to their very large surface area as well as inclusion complexation capability of surface associated CDP.
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Affiliation(s)
- Fatma Kayaci
- UNAM-Institute of Materials Science & Nanotechnology, Bilkent University, Ankara 06800, Turkey
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Niu J, Dai Y, Guo H, Xu J, Shen Z. Adsorption and transformation of PAHs from water by a laccase-loading spider-type reactor. JOURNAL OF HAZARDOUS MATERIALS 2013; 248-249:254-260. [PMID: 23385205 DOI: 10.1016/j.jhazmat.2013.01.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 12/12/2012] [Accepted: 01/09/2013] [Indexed: 06/01/2023]
Abstract
The remediation of polycyclic aromatic hydrocarbons (PAHs) polluted waters has become a concern as a result of the widespread use of PAHs and their adverse impacts on water ecosystems and human health. To remove PAHs rapidly and efficiently in situ, an active fibrous membrane, laccase-loading spider-type reactor (LSTR) was fabricated by electrospinning a poly(D,L-lactide-co-glycolide) (PDLGA)/laccase emulsion. The LSTR is composed of beads-in-string structural core-shell fibers, with active laccase encapsulated inside the beads and nanoscale pores on the surface of the beads. This structure can load more laccase and retains higher activity than do linear structural core-shell fibers. The LSTR achieves the efficient removal/degradation of PAHs in water, which is attributed to not only the protection of the laccase activity by the core-shell structure but also the pre-concentration (adsorption) of PAHs on the surface of the LSTR and the concentration of laccase in the beads. Moreover, the effects of pH, temperature and dissolved organic matter (DOM) concentration on the removal of PAHs by the LSTR, in comparison with that by free laccase, have been taken into account. A synergetic mechanism including adsorption, directional migration and degradation for PAH removal is proposed.
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Affiliation(s)
- Junfeng Niu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.
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Niu J, Xu J, Dai Y, Xu J, Guo H, Sun K, Liu R. Immobilization of horseradish peroxidase by electrospun fibrous membranes for adsorption and degradation of pentachlorophenol in water. JOURNAL OF HAZARDOUS MATERIALS 2013; 246-247:119-25. [PMID: 23295768 DOI: 10.1016/j.jhazmat.2012.12.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 12/10/2012] [Accepted: 12/11/2012] [Indexed: 05/19/2023]
Abstract
Horseradish peroxidase (HRP) is successfully in situ encapsulated into the poly(D,L-lactide-co-glycolide) (PLGA)/PEO-PPO-PEO (F108) electrospun fibrous membranes (EFMs) by emulsion electrospinning. The adsorption and degradation of pentachlorophenol (PCP) by HRP-EFMs are investigated. The experimental results show that the sorption kinetic of PCP on EFMs follows the pseudo-second-order model, and the sorption capacity is as high as 44.69 mg g(-1). The sorption mechanisms of EFMs for PCP can be explained by hydrogen bonding interactions, hydrophobic interactions and π-π bonding interactions. Profiting from the strong adsorption, the removal of PCP can be dramatically enhanced by the interaction of adsorbed PCP and HRP on the surface of EFMs. For PCP degradation, the optimal pH values for free HRP and immobilized HRP are 4 and 2-4, respectively. As pH>4.7, no adsorption and degradation are observed due to the deprotonation of PCP. The removal percentages reach 83% and 47% for immobilized HRP and free HRP, respectively, at 25 ± 1°C. The presence of humic acid can inhibit the activity of HRP and decreases the adsorption capacity of PCP because of competitive adsorption. The operational and storage stability of immobilized HRP are highly improved through emulsion electrospinning.
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Affiliation(s)
- Junfeng Niu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.
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Laccase-carrying electrospun fibrous membrane for the removal of polycyclic aromatic hydrocarbons from contaminated water. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2012.11.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Xu J, Niu J, Zhang S. Sorption of Perfluorooctane Sulfonate (PFOS) on Electrospun Fiber Membranes. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.proenv.2013.04.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Li B, Feng C, Li X, Chen Y, Niu J, Shen Z. Spatial distribution and source apportionment of PAHs in surficial sediments of the Yangtze Estuary, China. MARINE POLLUTION BULLETIN 2012; 64:636-43. [PMID: 22245436 DOI: 10.1016/j.marpolbul.2011.12.005] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Revised: 12/03/2011] [Accepted: 12/07/2011] [Indexed: 05/07/2023]
Abstract
Spatial distribution and source apportionment of polycyclic aromatic hydrocarbons (PAHs) in the surface sediments of the Yangtze Estuary, especially the North Branch, have been fully investigated. PAH concentrations increased with the descending distance from the inner estuary to the adjacent sea, and varied significantly in various estuarine regions. Water currents (e.g., river runoff and ocean current) greatly affected the distribution pattern. In addition, ambient sewage and traffic also contributed to the PAH pollution in the estuary. In the adjacent sea, PAH values along the -20m isobath were higher than those along the -10m isobath due to the "marginal filter" phenomenon formed by different water currents. In most sites, PAHs had poor correlations with sediment size, but had positive correlations with total organic carbon. Based on the qualitative and quantitative analysis results, PAH sources were proved to be mainly from a mixture of petroleum combustion, biomass, and coal combustion.
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Affiliation(s)
- Baohua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing, China
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Dai Y, Yin L, Niu J. Laccase-carrying electrospun fibrous membranes for adsorption and degradation of PAHs in shoal soils. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2011; 45:10611-10618. [PMID: 22047140 DOI: 10.1021/es203286e] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The removal of polycyclic aromatic hydrocarbons (PAHs) from soil is costly and time-consuming. The high hydrophobicity of PAHs makes PAH diffusion from soil particles by hydraulic flow difficult. The phase transfer of PAHs from soil to another available mediator is crucial for PAH removal. This study focuses on the remediation of PAH-contaminated shoal soil, located in Yangtze, China, using three types of laccase-carrying electrospun fibrous membranes (LCEFMs) fabricated via emulsion electrospinning. These LCEFMs were composed of core-shell structural nanofibers (for PAH adsorption), with laccase in the core (for PAH degradation) and pores on the shell (for mass transfer). The LCEFMs with strong adsorptivity extracted the PAHs from the soil particles, resulting in an obvious enhancement of PAH degradation. The removal efficiencies in 6 h for phenanthrene, fluoranthene, benz[a]anthracene and benzo[a]pyrene were greater than 95.1%, 93.2%, 79.1%, and 72.5%, respectively. The removal half-lives were 0.003-1.52 h, much shorter than those by free laccase (17.9-67.9 h) or membrane adsorption (1.25-12.50 h). The third-order reaction kinetics suggested that the superficial adsorption and internal diffusion were the rate-limiting steps of the overall reaction. A synergistic effect between adsorption and degradation was also proposed on the basis of the triple phase distribution and kinetics analyses.
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Affiliation(s)
- Yunrong Dai
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, P.R. China
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30
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Yao M, Zhang X, Lei L. Polycyclic aromatic hydrocarbons in the centralized wastewater treatment plant of a chemical industry zone: Removal, mass balance and source analysis. Sci China Chem 2011. [DOI: 10.1007/s11426-011-4443-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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