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Navia Mendoza JM, Rivadeneira Mendoza BF, Cevallos Mendoza J, Balu AM, Luque R, Zambrano Intriago LA, Rodríguez-Díaz JM. MIL-53(Al)@HC nanohybrid for bicomponent adsorption of ibuprofen and metsulfuron-methyl: Application of macro- and microscopic models and competition between contaminants. Environ Res 2024; 240:117492. [PMID: 37944690 DOI: 10.1016/j.envres.2023.117492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/12/2023] [Accepted: 10/23/2023] [Indexed: 11/12/2023]
Abstract
In this work, a hybrid was synthesized by hydrothermal treatment, metal-organic framework functionalized with hydrochar (MIL-53(Al)@HC) for the adsorption of two organic molecules Ibuprofen sodium salt and Metsulfuron-methyl, in binary system. The hybrid is composed of 71 wt% biomass and 29 wt% MOF. TGA, BET, FTIR, XRD and XPS characterization techniques were used to verify the hybridization of MIL-53(Al)@HC. The MIL-53(Al)@HC hybrid showed in situ MIL-53(Al) crystal growth capability. Batch adsorption experiments were carried out to study the effect of pH, adsorbent dosage, adsorbate concentration, contact time and temperature effect. The results obtained under extreme conditions demonstrate that MIL-53(Al)@HC is an adsorbent capable of removing >98% of IBU and MTM in mixture at a concentration of 0.3 mM (68 ppm IBU and 115 ppm MTM). The pseudo-second order model adequately described the adsorption kinetics and equilibrium using the Sips and Freundlich models. The physico-statistical microscopic model (2-layer) corroborated the hypothesis of a multilayer adsorption proposed by the macroscopic Freundlich model. In the competition study between IBU and MTM, both antagonistic and synergistic effects were observed. In the thermodynamic study, positive values of (ΔH°) indicate that adsorption is endothermic in nature and that the dominant mechanism is physisorption. A mechanism of adsorption by hydrogen bridging and non-covalent π*-π adsorbate-adsorbate and adsorbate-adsorbate-adsorbate interactions was proposed. The desorption study shows that in 5 washing cycles MIL-53(Al)@HC is a recoverable material.
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Affiliation(s)
- Jennifer María Navia Mendoza
- Facultad de Posgrado, Universidad Técnica de Manabí, S/N, Avenida Urbina y Che Guevara, Portoviejo, 130104, Ecuador; Departamento de Química Orgánica, Universidad de Córdoba, Edificio Marie Curie (C-3), Campus de Rabanales, Ctra. Nnal. IV-A, Km 396, E14014, Córdoba, Spain
| | - Bryan Fernando Rivadeneira Mendoza
- Departamento de Química Orgánica, Universidad de Córdoba, Edificio Marie Curie (C-3), Campus de Rabanales, Ctra. Nnal. IV-A, Km 396, E14014, Córdoba, Spain; Laboratorio de Análisis Químicos y Biotecnológicos, Instituto de Investigación, Universidad Técnica de Manabí, S/N, Avenida Urbina y Che Guevara, Portoviejo, 130104, Ecuador
| | - Jaime Cevallos Mendoza
- Laboratorio de Análisis Químicos y Biotecnológicos, Instituto de Investigación, Universidad Técnica de Manabí, S/N, Avenida Urbina y Che Guevara, Portoviejo, 130104, Ecuador; Departamento de Procesos Químicos, Facultad de Ciencias Matemáticas, Físicas y Químicas, Universidad Técnica de Manabí, Portoviejo, Manabí, Ecuador
| | - Alina M Balu
- Departamento de Química Orgánica, Universidad de Córdoba, Edificio Marie Curie (C-3), Campus de Rabanales, Ctra. Nnal. IV-A, Km 396, E14014, Córdoba, Spain
| | - Rafael Luque
- Universidad ECOTEC, Km 13.5 Samborondón, Samborondón, EC092302, Ecuador; Peoples Friendship University of Russia (RUDN University), 6 Miklukho Maklaya Str., 117198, Moscow, Russian Federation
| | - Luis Angel Zambrano Intriago
- Laboratorio de Análisis Químicos y Biotecnológicos, Instituto de Investigación, Universidad Técnica de Manabí, S/N, Avenida Urbina y Che Guevara, Portoviejo, 130104, Ecuador
| | - Joan Manuel Rodríguez-Díaz
- Laboratorio de Análisis Químicos y Biotecnológicos, Instituto de Investigación, Universidad Técnica de Manabí, S/N, Avenida Urbina y Che Guevara, Portoviejo, 130104, Ecuador; Departamento de Procesos Químicos, Facultad de Ciencias Matemáticas, Físicas y Químicas, Universidad Técnica de Manabí, Portoviejo, Manabí, Ecuador.
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Oliva J, Valle-Garcia LS, Garces L, Oliva AI, Valadez-Renteria E, Hernandez-Bustos DA, Campos-Amador JJ, Gomez-Solis C. Using NIR irradiation and magnetic bismuth ferrite microparticles to accelerate the removal of polystyrene microparticles from the drinking water. J Environ Manage 2023; 345:118784. [PMID: 37611517 DOI: 10.1016/j.jenvman.2023.118784] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 07/28/2023] [Accepted: 08/09/2023] [Indexed: 08/25/2023]
Abstract
Magnetic bismuth ferrite (BiFO) microparticles were employed for the first time for the removal of polystyrene (PS) nano/microplastics from the drinking water. BiFO is formed by porous agglomerates with sizes of 5-11 μm, while the PS nano/microparticles have sizes in the range of 70-11000 nm. X-ray diffraction studies demonstrated that the BiFO microparticles are composed of BiFeO3/Bi25FeO40 (the content of Bi25FeO40 is ≈ 8.6%). Drinking water was contaminated with PS nano/microparticles (1 g L-1) and BiFO microparticles were also added to the contaminated water. Later, the mixture of PS-particles + BiFO was irradiated with NIR light (980 nm). Consequently, PS nano/microparticles melted on the BiFO microparticles due to the excessive heating on their surface. At the same time, the NIR (near infrared) light generated oxidizing agents (∙OH and h+), which degraded the by-products formed during the photocatalytic degradation of PS nano/microparticles. Subsequently, the NIR irradiation was stopped, and a Neodymium magnet was utilized to separate the BiFO microparticles from the water. This last procedure also permitted the removal of PS nano/microparticles by physical adsorption. Zeta potential measurements demonstrated that the BiFO surface was positively charged, allowing the removal of the negatively charged PS nano/microparticles by electrostatic attraction. The combination of the photocatalytic process and the physical adsorption permitted a complete removal of PS nano/microparticles after only 90 min as well as a high mineralization of by-products (≈95.5% as confirmed by the total organic carbon measurements). We estimate that ≈23.6% of the PS nano/microparticles were eliminated by photocatalysis and the rest of PS particles (≈76.4%) by physical adsorption. An outstanding adsorption capacity of 195.5 mg g-1 was obtained after the magnetic separation of the BiFO microparticles from the water. Hence, the results of this research demonstrated that using photocatalysis + physical-adsorption is a feasible strategy to quickly remove microplastic contaminants from the water.
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Affiliation(s)
- J Oliva
- CONAHCYT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico
| | - L S Valle-Garcia
- División de Ciencias e Ingenierías, Universidad de Guanajuato, León 37150, Mexico
| | - L Garces
- CONAHCYT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico
| | - A I Oliva
- Cinvestav IPN, Unidad Mérida, Depto. de Física Aplicada, A.P. 73-Cordemex, 97310, Mérida, Yucatán, 97310, Mexico
| | - E Valadez-Renteria
- CONAHCYT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico
| | - D A Hernandez-Bustos
- División de Ciencias e Ingenierías, Universidad de Guanajuato, León 37150, Mexico
| | - J J Campos-Amador
- División de Ciencias e Ingenierías, Universidad de Guanajuato, León 37150, Mexico
| | - C Gomez-Solis
- División de Ciencias e Ingenierías, Universidad de Guanajuato, León 37150, Mexico.
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Valadez-Renteria E, Oliva J, Navarro-Garcia N, Rodriguez-Gonzalez V. An eco-friendly cellulose support functionalized with tin titanate nanoparticles for the fast removal of clonazepam drug from the drinking water: adsorption mechanisms. Environ Sci Pollut Res Int 2023; 30:58156-58168. [PMID: 36973629 DOI: 10.1007/s11356-023-26669-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 03/23/2023] [Indexed: 05/10/2023]
Abstract
This research studied the performance of tin titanate (SnTiO3, SnT) and cellulose-based composites for the removal of clonazepam (CZP) drug by physical adsorption. The cellulose was extracted from a plant named tithonia tubaeformis, which is considered as weed in the crop fields of Mexico. The analysis by microscopy revealed that the SnTiO3 powders are formed by a mixture of coalesced grains and nanotubes with lengths in the range of 97-633 nm. Furthermore, the X-ray diffraction analysis indicated that the SnT powders present a mixture of cassiterite and rutile phases. Experiments for the CZP removal from drinking water were carried out, and several parameters such as initial drug concentration (1-10 mg/L), amount of SnT adsorbent per liter of contaminated solution (10-50 mg/L), and pH (3-10) were varied in order to study their influence on the CZP removal percentage. Essentially, we found that the SnT dosage of 50 mg/L produced the most efficient and fastest CZP removal, since 94.3% of CZP was removed after only 10 min of reaction. Moreover, a piece of cellulose (Cell) was decorated with 50 mg of SnT powder to form the Cell+SnT composite, and this was able to remove a maximum of 80.5% of CZP after 180 min of reaction. If the amount of SnT powder deposited on the Cell+SnT composite is raised up to 100 mg, the composite can remove 95.5% of CZP. The adsorption capacity was also calculated for the SnT powders and Cell+SnT composite and found that it was 6.3 times higher for the SnT powders. Furthermore, the Raman spectra recorded for the Cell+SnT composites demonstrated the presence of surface defects, which acted as adsorption centers for the CZP molecules. The results of this investigation demonstrate that eco-friendly and low-cost floatable composites can be used for the removal of pharmaceutical contaminants, which is an advantage over adsorbent powders.
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Affiliation(s)
- Ernesto Valadez-Renteria
- CONACyT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, México
| | - Jorge Oliva
- CONACyT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, México.
| | - Nayeli Navarro-Garcia
- CONACyT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, México
| | - Vicente Rodriguez-Gonzalez
- CONACyT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, México
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Xu C, Wang H, Shang Y, Li B, Yu D, Wang Y. Highly efficient Cd(Ⅱ) removal using 3D N-doped carbon derived from MOFs: Performance and mechanisms. J Hazard Mater 2022; 436:129149. [PMID: 35594671 DOI: 10.1016/j.jhazmat.2022.129149] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 04/30/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Cadmium (Cd) removal is imperative to ensure the safety of aquatic-ecosystem, yet its effective removal technology has remained elusive by far. To address this concern, three-dimensional N-doped carbon (NC) polyhedrons affording ample porosity is fabricated based upon the thermal carbonization and KOH activation of zeolitic imidazolate framework-8 (ZIF-8) precursor. Thus-derived activated NC (a-NC) adsorbent not only overcomes the inherent instability of ZIF-8 but also harvests a maximum Cd(Ⅱ) adsorption capacity of 370.2 mg g-1, which evidently surpasses those of bare NC counterpart as well as previously reported adsorbents. Impressively, a-NC achieves ca. 100% removal of aqueous Cd(Ⅱ) in a broad working pH range (5-9), and particularly attains stable performances (81-92%) in various realistic water. Theoretical calculations in combination with experimental characterizations further offer mechanistic insight into the enhanced removal exerted by a-NC. Notably, owing to the increased specific surface area (3041 vs. 389 m2 g-1) and enhanced sp2 carbon content (91.7 vs. 68.8%) of a-NC as compared to NC, advanced Cd(Ⅱ) adsorption via a-NC can be exhibited. Our designed a-NC material harnessing favorable recycling capability would be in particular attractive in the realm of practical Cd(Ⅱ) remediation.
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Affiliation(s)
- Conglei Xu
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Hao Wang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Yaxin Shang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Beibei Li
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Danning Yu
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Yifei Wang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
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Valadez-Renteria E, Oliva J, Rodriguez-Gonzalez V. A sustainable and green chlorophyll/TiO 2:W composite supported on recycled plastic bottle caps for the complete removal of Rhodamine B contaminant from drinking water. J Environ Manage 2022; 315:115204. [PMID: 35523072 DOI: 10.1016/j.jenvman.2022.115204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 04/10/2022] [Accepted: 04/28/2022] [Indexed: 06/14/2023]
Abstract
This investigation reports the photocatalytic performance of the tungsten doped titania (TiO2:W or TW) with and without coating of chlorophyll (Chl) for the removal of the RhB dye from the drinking water. These particles were also supported on recycled plastic bottle caps (Bcap) to form other photocatalytic composites (TW/Bcap and TW + Chl/Bcap). The SEM images demonstrated that the TW particles without Chl had irregular shapes and sizes of 0.8-12 μm. The TW particles coated by the Chl presented shapes of quasi-rounded grains and smaller particle sizes of 0.8-1.8 μm. The photocatalytyic experiments showed that the photocatalyst powders containing Chl removed completely the RhB dye from the water after 2h under UV-VIS light, while the photocatalyst without Chl removed a maximum of 95% of the RhB. Interestingly, the TW/Bcap and TW + Chl/Bcap composites removed 94-100% of the RhB after 2h. Those ones removed such dye by photocatalysis and by physical adsorption at the same time (as confirmed by the absorbance and FTIR measurements), therefore, the removal of RhB was still very high. Scavenger experiments were also achieved and found that the •OH radicals are the main oxidizing species generated by the photocatalysts with and without Chl. The •O2- radicals and holes (h+) were the secondary oxidizing species. The presence of the chlorophyll on the photocatalyst increased in general the light absorption and the photocurrent. Overall, our work demonstrated that making composites with recycled plastic bottle caps is a feasible alternative to remove dyes from contaminated drinking water with high efficiency and low cost.
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Affiliation(s)
- E Valadez-Renteria
- CONACyT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico
| | - J Oliva
- CONACyT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico.
| | - V Rodriguez-Gonzalez
- CONACyT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico.
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Liu H, Chen H, Xie X, Li C, Shen F, Wang P, Xiang K. Low-temperature Hg 0 abatement by ionic liquid based on weak interaction. J Hazard Mater 2022; 426:127836. [PMID: 34865905 DOI: 10.1016/j.jhazmat.2021.127836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/11/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
Low-temperature gaseous elemental mercury (Hg0) abatement is an objective demand in industrial flue gas treatment. In this work, we proposed a new approach for Hg0 capture via weak interaction of ionic liquids. Ionic liquids with varied anions (1-butyl-3-methylimidazolium thioacetate ([Bmim][ThAc]), 1-butyl-3-methylimidazolium diethyldithiocarbamate ([Bmim][DTCR]), and 1-butyl-3-methylimidazolium ethylxanthate ([Bmim][EX])) were designed and synthesized. The interaction energies between ionic liquids and elemental mercury were proved to be positively related to mercury removal efficiency, revealing that the electrostatic interaction derived physical adsorption from anions is the dominant factor affecting mercury removal performance. [Bmim][ThAc] with the largest anionic electrostatic interaction energy showed the best mercury abatement performance, achieving a Hg0 removal efficiency of over 98% and an adsorption capacity of 10.66 mg/g at 50 °C. The influence of temperature and the results of mercury temperature-programmed desorption (Hg-TPD), X-ray photoelectron spectroscopy (XPS) further confirmed that the ionic liquid combines with elemental mercury through physical adsorption. The work provides a new perspective on designing high-efficiency sorbents for mercury removal at low temperature.
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Affiliation(s)
- Hui Liu
- School of Metallurgy and Environment, Central South University, 932 South Lushan Rd, Changsha, Hunan 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, 932 South Lushan Rd, Changsha, Hunan 410083, PR China
| | - Hao Chen
- School of Metallurgy and Environment, Central South University, 932 South Lushan Rd, Changsha, Hunan 410083, PR China
| | - Xiaofeng Xie
- School of Metallurgy and Environment, Central South University, 932 South Lushan Rd, Changsha, Hunan 410083, PR China
| | - Chaofang Li
- School of Metallurgy and Environment, Central South University, 932 South Lushan Rd, Changsha, Hunan 410083, PR China
| | - Fenghua Shen
- School of Metallurgy and Environment, Central South University, 932 South Lushan Rd, Changsha, Hunan 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, 932 South Lushan Rd, Changsha, Hunan 410083, PR China
| | - Pingshan Wang
- College of Chemistry and Chemical Engineering, Central South University, 932 South Lushan Rd, Changsha, Hunan 410083, PR China
| | - Kaisong Xiang
- School of Metallurgy and Environment, Central South University, 932 South Lushan Rd, Changsha, Hunan 410083, PR China; College of Chemistry and Chemical Engineering, Central South University, 932 South Lushan Rd, Changsha, Hunan 410083, PR China.
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Pourkhanali K, Khayati G, Mizani F, Raouf F. Characterization of free and immobilized lipase from Penicillium sp. onto three modified bentonites: A comparative study. J Biotechnol 2022; 344:57-69. [PMID: 34973971 DOI: 10.1016/j.jbiotec.2021.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 12/20/2021] [Accepted: 12/23/2021] [Indexed: 10/19/2022]
Abstract
The present work was conducted to investigate the immobilization of lipase from Penicillium sp. onto three modified bentonites by simple adsorption and crosslinking methods. The composites were characterized by FTIR, SEM and BET. The free and bentonite-supported lipase was evaluated in terms of operational and storage stability and pH and thermal activity and stability. The kinetic parameters were also evaluated. The results show that all immobilized enzymes had better thermal and pH stability compared to free enzymes. Among the immobilized enzymes, GDU-bent-lipase had more efficient performance in thermal (38% of its initial activity within 24 h at 65 °C), operational (70% residual activity after 9 cycles), storage stability (70.14% of its initial activities at 4 °C for 21 days), and kinetic properties (effectiveness factor 0.79 relative to free enzyme) than free and other immobilized enzymes. The adsorption isotherm was modeled by Langmuir, Freundlich and Temkin isotherms which Langmuir isotherm indicated a better fit of the experimental adsorption data. To the best of our knowledge, this is the first comparative report about the immobilization of lipase Produced by Penicillium sp., isolated from olive mill wastewater, and the most comprehensive study about the immobilization of lipase onto several supports.
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Affiliation(s)
- Khadijeh Pourkhanali
- Department of Chemical Engineering, Faculty of Engineering, University of Guilan, P. O. Box 41635-3756, Rasht, Iran
| | - Gholam Khayati
- Department of Chemical Engineering, Faculty of Engineering, University of Guilan, P. O. Box 41635-3756, Rasht, Iran.
| | - Farhang Mizani
- Department of Chemistry, Payame Noor Unversity, P. O. Box 19395-3697, Tehran, Iran
| | - Fereshteh Raouf
- Department of Chemical Engineering, Faculty of Engineering, University of Guilan, P. O. Box 41635-3756, Rasht, Iran
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Yuan B, Hu H, Huang Y, Fu B, Liu H, Luo G, Zhao Y, Yao H. Condensation and adsorption characteristics of gaseous selenium on coal-fired fly ash at low temperatures. Chemosphere 2022; 287:132127. [PMID: 34488056 DOI: 10.1016/j.chemosphere.2021.132127] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/28/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
Gaseous selenium is of high saturated vapor pressure, making its retention in solid phases quite difficult during coal combustion. The selenium transformation from gaseous form into solid phases at low temperatures can be essential to control selenium emission. To understand the migration of SeO2 (g) on ash particles in the low-temperature zone, this study investigated the speciation of selenium in fly ash and simulated the physical retention of SeO2 (g) on fly ash. The results demonstrated that there was a large proportion of physically-bound Se in the fly ash of pulverized-coal-fired boiler (22.62 %-58.03%), while the content of physically-bound Se in fly ash of circulated fluidized-bed boiler was lower (∼6%). The physically-bound Se was formed through selenium condensation and physical adsorption. The decrease of temperature or the increase of cooling rate could promote the transformation of gaseous selenium to solid phase and the presence of HCl might suppress SeO2 transformation into Se in the condensation process. Meanwhile the compositions of fly ash had a great influence on the selenium adsorption process. Among typical coal-fired ash components, mullite showed the best performance in the selenium capture in the temperature range of 90-200 °C, contributing to the high content of physically-adsorbed selenium in PC fly ash. These findings provided new ideas for improving the removal rate of volatile selenium.
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Affiliation(s)
- Bing Yuan
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Hongyun Hu
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Yongda Huang
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Biao Fu
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Huimin Liu
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Guangqian Luo
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yongchun Zhao
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Hong Yao
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074, China
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Hao-Yang W, Ying J, Jing-Xin X. Detection of 1,1 dimethylhydrazine by graphene oxide: first principles study. J Mol Model 2021; 27:250. [PMID: 34392405 DOI: 10.1007/s00894-021-04873-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/06/2021] [Indexed: 11/26/2022]
Abstract
The surface of graphene oxide (GO) with different oxidation levels is widely used in gas sensing applications. 1,1-Dimethylhydrazine (unsymmetrical dimethylhydrazine, UDMH) as a highly toxic and volatile pollution gas has long been investigated and discussed. The research reported here examined the stable structure of GO surface by first principles calculation. Furthermore, the adsorption mechanism of UDMH on the stable GO surface was explored and the optimal adsorption distance and upper limit of adsorption quantity were determined with their adsorption energy calculated. The results reveal that the hydroxyl group on GO did a great service to the UDMH adsorption and the UDMH tends to approach GO from the direction of -NH2, with distance being 2.9 Å.
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Affiliation(s)
- Wang Hao-Yang
- Xi'an Research Institute of High Technology, Xian, 710025, China
- Xi'an International Studies University, Xian, 710128, China
| | - Jia Ying
- Xi'an Research Institute of High Technology, Xian, 710025, China.
- Xi'an International Studies University, Xian, 710128, China.
| | - Xiao Jing-Xin
- Xi'an Research Institute of High Technology, Xian, 710025, China
- Xi'an International Studies University, Xian, 710128, China
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Tonel MZ, Zanella I, Fagan SB. Theoretical study of small aromatic molecules adsorbed in pristine and functionalised graphene. J Mol Model 2021; 27:193. [PMID: 34057615 DOI: 10.1007/s00894-021-04806-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 05/25/2021] [Indexed: 10/21/2022]
Abstract
Small aromatic molecules are precursors for several biological systems such as DNA, proteins, drugs, and are also present in several pollutants. The understanding of the interaction of these small aromatic molecules with pristine and functionalised graphene (fGr) can generate different applications. We performed ab initio simulations based on the density functional theory to evaluate the interaction between the aromatic compounds, benzene, benzoic acid, aniline and phenol, with pristine and fGr. The results show that the binding energy for all cases is less than 103.24 kJ/mol (1.07 eV) without substantial modification of the electronic properties, indicating that the interaction occurs through a physical adsorption regime. The results are promising because they suggest that pristine graphene and functionalised graphene are suitable for removing these pollutants, or for carrying molecules for biological applications influenced by π-π and H-bonds interaction.
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Affiliation(s)
- Mariana Zancan Tonel
- Physics Department, Universidade Franciscana-UFN, Rua dos Andradas, 1614, ZIP, Santa Maria, RS, 97010-032, Brazil.
| | - Ivana Zanella
- Physics Department, Universidade Franciscana-UFN, Rua dos Andradas, 1614, ZIP, Santa Maria, RS, 97010-032, Brazil
| | - Solange Binotto Fagan
- Physics Department, Universidade Franciscana-UFN, Rua dos Andradas, 1614, ZIP, Santa Maria, RS, 97010-032, Brazil
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11
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Gan J, Bagheri AR, Aramesh N, Gul I, Franco M, Almulaiky YQ, Bilal M. Covalent organic frameworks as emerging host platforms for enzyme immobilization and robust biocatalysis - A review. Int J Biol Macromol 2020; 167:502-515. [PMID: 33279559 DOI: 10.1016/j.ijbiomac.2020.12.002] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/29/2020] [Accepted: 12/01/2020] [Indexed: 12/11/2022]
Abstract
In recent years, the synthesis and application of green and sustainable products have become global ecological and societal issues. Based on the principles of green chemistry, the application of different biocatalysts not only produce target products and decreases side effects but also enhances the selectivity and activity. Enzyme-based biocatalysts are very interesting due to their high catalytic performance, eco-friendly reaction systems, and selectivity. Immobilization is demonstrated as a favorable approach to improve the stability and recyclability of enzymes. Among different supports, porous and crystalline materials, covalent organic frameworks (COFs), represent an interesting class of support matrices for the immobilization of different enzymes. Owing to tunable physicochemical characteristics, a high degree of crystallinity, large specific surface area, superior adsorption capacity, pre-designable structure and marked stability, COFs might consider as perfect host materials for improving the desirable properties of enzymes, such as poor stability, low operational range, lack of repeatability, and products/by-products inhibition for large-scale applications. The enzyme-incorporated COFs have emerged as one of the hopeful ways to constitute tailor-made biocatalytic systems, which can be employed in an array of reactions. Highly porous nature of many COFs led to increased process output in contrast to other micro/nanoparticles. The enzymes can be integrated into COFs through different techniques, including physical adsorption and direct covalent attachment between the enzyme molecules and COFs or through a cross-linking agent. Herein, we discuss and highlight the synthesis methods, properties, and functionalization of COFs and the recent literature for the application of these materials in enzymes immobilization. Main approaches for immobilization of enzymes into COFs and the catalytic applications of these materials are also presented. This study offers new avenues to address the limitations of traditional enzyme immobilization supports as well as delivers new possibilities to construct smart biocatalytic systems for diverse biotechnological applications.
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Affiliation(s)
- JianSong Gan
- School of Food and Drug, Jiangsu Vocational College of Finance & Economics, Huaian 223003, China; Northeastern State University, United States of America.
| | | | - Nahal Aramesh
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran
| | - Ijaz Gul
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Marcelo Franco
- Department of Exact and Technological Sciences, State University of Santa Cruz, 45654-370 Ilhéus, Brazil
| | - Yaaser Q Almulaiky
- University of Jeddah, College of Sciences and Arts at Khulais, Department of Chemistry, Jeddah, Saudi Arabia; Chemistry Department, Faculty of Applied Science, Taiz University, Taiz, Yemen
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China.
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12
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Dai K, Peng X, Zhuang W, Yang P, Jiao P, Wu J, Ying H. Mass transfer process and separation mechanism of four 5'-ribonucleotides on a strong acid cation exchange resin. J Chromatogr A 2020; 1634:461681. [PMID: 33212368 DOI: 10.1016/j.chroma.2020.461681] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/13/2020] [Accepted: 10/30/2020] [Indexed: 10/23/2022]
Abstract
5'-ribonucleotides including adenosine 5'-monophosphate (AMP), cytidine 5'-monophsphate (CMP), guanosine 5'-monophosphate (GMP) and uridine 5'-monophosphate (UMP) have been widely used in the food and pharmaceutical industries. This work focused on the assessment of mass transfer process and separation mechanism of four 5'-ribonucleotides and counter-ion Na+ on the strong cation exchange resin NH-1. The intraparticle diffusion was determined as the rate-limiting step for the mass transfer of AMP, CMP, GMP, and Na+ on the resin NH-1 through the Boyd model. Meanwhile, a homogeneous surface diffusion model (HSDM) combing ion exchange and physical adsorption was proposed and tested against adsorption kinetic data in the batch adsorption systems. The fixed-bed film-surface diffusion model based on the HSDM was then developed and successfully predicted the concentration profiles of 5'-ribonucleotides and the change of pH at the outlet of the fixed-bed in the dynamic adsorption and separation process. Finally, the separation mechanism of 5'-ribonucleotides was presented combining model prediction and experimental results. The separation of UMP, GMP and CMP were mainly based on their differences in isoelectric points, while that of AMP and CMP were lied with the discrepancy of their physical adsorption binding capacity with the resin NH-1.
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Affiliation(s)
- Kun Dai
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, National Engineering Technique Research Center for Biotechnology and Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing, China
| | - Xiaoqiang Peng
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, National Engineering Technique Research Center for Biotechnology and Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing, China
| | - Wei Zhuang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, National Engineering Technique Research Center for Biotechnology and Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing, China
| | - Pengpeng Yang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, National Engineering Technique Research Center for Biotechnology and Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing, China
| | - Pengfei Jiao
- School of Life Science and Technology, Nanyang Normal University, Nanyang, China.
| | - Jinglan Wu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, National Engineering Technique Research Center for Biotechnology and Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing, China.
| | - Hanjie Ying
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, National Engineering Technique Research Center for Biotechnology and Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing, China; State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, China.
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13
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Farooq M, Saeed MA, Imran M, Uddin GM, Asim M, Bilal H, Younas MR, Andresen JM. CO 2 capture through electro-conductive adsorbent using physical adsorption system for sustainable development. Environ Geochem Health 2020; 42:1507-1515. [PMID: 31069597 DOI: 10.1007/s10653-019-00318-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 04/30/2019] [Indexed: 06/09/2023]
Abstract
The most critical energy and environmental challenge that our planet is facing today is to minimize the dependence on fossil fuels. Carbon dioxide may be of utmost significance as a solution of this issue through realization of carbon neutral energy cycle. Potentially, this could be achieved through the carbon dioxide capture as the urgent response to ongoing climate change. Activated carbon (AC) adsorption is one the most effective, environment friendly and techno-economic process for the carbon capture. In the current research, an electro-conductive-activated carbon was prepared by mixing powdered activated carbon (PAC) with an electro-conductive polymer (ECP). Different ratios of 0, 25, 50, 75 and 100 wt% of ECP with PAC were used for the different analyses of activated carbons in a gas mixture of CO2/N2 using a physical adsorption system. Adsorption and desorption analyses, capacities of the process and desorption effects were examined. Electro-conductive polymers (ECP) were mixed with AC samples, where breakthrough time was increased up to 400% when mixed with the PAC for CO2 adsorption. Following adsorption analysis, desorption of activated carbons was conducted with different potentials. It was revealed that mixing could help the PAC sample to overcome the packing issue to increase the breakthrough capacity and the volumes before and after the breakthrough adsorption in the packed bed systems. The desorption rates of the PAC sample were also enhanced, and fast desorption was observed when mixed with ECP. It is envisioned that this method is very much promising carbon capture method for the techno-economic feasibility and sustainable development of the environment.
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Affiliation(s)
- M Farooq
- Research Centre for Carbon Solutions, Heriot-Watt University, Edinburgh, UK.
- Department of Mechanical Engineering, University of Engineering and Technology, Lahore, Lahore, Pakistan.
| | - M A Saeed
- Department of Chemical and Polymer Engineering, University of Engineering and Technology, Lahore, Faisalabad Campus, Lahore, Pakistan
| | - M Imran
- Department of Mechanical Engineering, Technical University of Denmark, Lyngby, Denmark
- School of Engineering (SEN), University of Management and Technology (UMT) Lahore, Lahore, Pakistan
| | - G M Uddin
- Department of Mechanical Engineering, University of Engineering and Technology, Lahore, Lahore, Pakistan
| | - M Asim
- Department of Mechanical Engineering, University of Engineering and Technology, Lahore, Lahore, Pakistan
| | - H Bilal
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, Australia
| | - M R Younas
- School of Engineering (SEN), University of Management and Technology (UMT) Lahore, Lahore, Pakistan
| | - J M Andresen
- Research Centre for Carbon Solutions, Heriot-Watt University, Edinburgh, UK
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14
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Jia Y, Chen Y, Luo J, Hu Y. Immobilization of laccase onto meso-MIL-53(Al) via physical adsorption for the catalytic conversion of triclosan. Ecotoxicol Environ Saf 2019; 184:109670. [PMID: 31526924 DOI: 10.1016/j.ecoenv.2019.109670] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 09/08/2019] [Accepted: 09/10/2019] [Indexed: 06/10/2023]
Abstract
Due to the abundant binding sites and high stability, a synthesized meso-MIL-53(Al) was selected as the backbone and used for immobilizing laccase (Lac-MIL-53(Al)) to catalytically degrade of TCS. XRD, BET and FTIR analyses proved that the carboxyl groups on PTA of meso-MIL-53(Al) could provide sufficient adsorption sites for physically immobilizing laccase through hydrogen bonds and electrostatic interactions. Although the catalytic efficiency of Vmax/Km slightly decreased from 785 to 607 min-1 due to the mass transfer limitation upon immobilized, Lac-MIL-53(Al) showed high activity recovery (93.8%) and stability. The conformational analysis indicated the laccase could partially enter into the MOF by conformational changes without impairing laccase, although the laccase molecular (6.5 nm × 5.5 nm × 4.5 nm) was larger than the mesopore sizes of the MOF (4 nm). The kinetics indicated that Lac-MIL-53(Al) could remove 99.24% of TCS within 120 min due to the synergy effect of the adsorption of meso-MIL-53(Al) and catalytic degradation of laccase. Meanwhile, Lac-MIL-53(Al) could remain approximately 60% of activity for up to 8 times reuse without desorption. The GC/MS and LC/MS/MS analyses further confirmed that TCS could be transformed to 2, 4-DCP by laccase via the breakage of the ether bond, or to passivated dimers, trimers and tetramers by the self-coupling and oxidization of the phenoxyl radicals, and finally removed by precipitation. In summary, enzyme-MOF composite might be a potential strategy to control the micropollutants in the wastewater.
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Affiliation(s)
- Yating Jia
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Yuancai Chen
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
| | - Jun Luo
- South China Institute of Environmental Science, Ministry of Ecology and Environment of People's Republic of China, Guangzhou, 510000, China
| | - Yongyou Hu
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
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15
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Fan X, Yao J, Gan M, Lv W, Ji Z, Chen X, Wong G, Tang Q. Influences of fine-grained NaCl particles on performance and denitration efficiency of activated carbon during sintering flue gas purification process. Environ Sci Pollut Res Int 2019; 26:29660-29668. [PMID: 31402436 DOI: 10.1007/s11356-019-06104-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 07/29/2019] [Indexed: 06/10/2023]
Abstract
Alkali metal chlorides emitted from sintering flue gas are easily adsorbed on the surface of activated carbon (AC) in the purification process. In this paper, NaCl particles adsorbing onto AC were simulated by impregnation method, and the size and morphology of NaCl particles were similar to those of NaCl-PM10 emitted from sintering flue gas. With the adsorption of NaCl particles, 2-10-μm pores of AC were filled, and the specific surface area of AC decreased. But NaCl led to the increase of acidic functional groups on the surface of AC. When 0.75 wt% NaCl was adsorbed, it was beneficial for AC catalytic denitration (de-NOx), because the chemical reaction was strengthened by acidic functional groups, so it showed a certain promotion of de-NOx efficiency. As 1.5 wt% NaCl and 3 wt% NaCl were adsorbed, NaCl had an inhibitory effect on AC de-NOx, which was because the specific surface area of AC decreased, and the prevention of physical adsorption played a major role. As a result, the de-NOx efficiency of AC adsorbed with 3 wt% NaCl decreased from 40.59 to 23.02% at 150 °C. Therefore, the absorption of NaCl fine particles on AC should not exceed 0.75 wt%.
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Affiliation(s)
- Xiaohui Fan
- School of Minerals Processing & Bioengineering, Central South University, No. 932, South Lushan Road, Changsha, 410083, Hunan, People's Republic of China
| | - Jiawen Yao
- School of Minerals Processing & Bioengineering, Central South University, No. 932, South Lushan Road, Changsha, 410083, Hunan, People's Republic of China
| | - Min Gan
- School of Minerals Processing & Bioengineering, Central South University, No. 932, South Lushan Road, Changsha, 410083, Hunan, People's Republic of China.
- School of Minerals Processing & Bioengineering, Central South University, Peace Building, No. 248, Changsha, 410083, Hunan, People's Republic of China.
| | - Wei Lv
- School of Minerals Processing & Bioengineering, Central South University, No. 932, South Lushan Road, Changsha, 410083, Hunan, People's Republic of China.
- School of Minerals Processing & Bioengineering, Central South University, Biology Building, No. 205, Changsha, 410083, Hunan, People's Republic of China.
| | - Zhiyun Ji
- School of Minerals Processing & Bioengineering, Central South University, No. 932, South Lushan Road, Changsha, 410083, Hunan, People's Republic of China
| | - Xuling Chen
- School of Minerals Processing & Bioengineering, Central South University, No. 932, South Lushan Road, Changsha, 410083, Hunan, People's Republic of China
| | - Guojing Wong
- School of Minerals Processing & Bioengineering, Central South University, No. 932, South Lushan Road, Changsha, 410083, Hunan, People's Republic of China
| | - Qingyu Tang
- School of Minerals Processing & Bioengineering, Central South University, No. 932, South Lushan Road, Changsha, 410083, Hunan, People's Republic of China
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16
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Zhang Z, Li M, Wu C, Peng B. Physical adsorption of patulin by Saccharomyces cerevisiae during fermentation. J Food Sci Technol 2019; 56:2326-2331. [PMID: 30996467 DOI: 10.1007/s13197-019-03681-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 02/19/2019] [Accepted: 02/24/2019] [Indexed: 11/26/2022]
Abstract
Patulin (PAT), a mycotoxin mainly produced by various species of fungi, is frequently detected in moldy fruit- and vegetable-based products, which pose a health risk to the consumer. Over the past decades, a few studies reported that PAT content could be significantly decreased by microbial fermentation process. However, the physical adsorption mechanism between PAT and yeast during fermentation is still unclear. In this paper, we focused on the physical adsorption of PAT by Saccharomyces cerevisiae CCTCC 93161 during fermentation in aqueous solutions. Firstly, morphology of differently treated yeast cells were analyzed by scanning electron microscope, then the interactions between PAT and yeast cells were investigated by infrared absorption spectra of differently treated S. Cerevisiae cells before and after the adsorption of PAT. The results showed that the efficiency of PAT removal raised significantly with the increase of fermentation temperature and time, whereas it decreased significantly with the increase of initial PAT concentration in the fermentation system. The proteins and polysaccharides in the cell walls of yeast interacted with PAT and accounted for the physical adsorption. The current work would possibly provide some new insights on PAT control for fermented foods.
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Affiliation(s)
- Zhuo Zhang
- 1Key Laboratory of Environment Correlative Dietology, Ministry of Education, College of Food Science & Technology, Huazhong Agricultural University, Wuhan, 430070 Hubei China
| | - Min Li
- 1Key Laboratory of Environment Correlative Dietology, Ministry of Education, College of Food Science & Technology, Huazhong Agricultural University, Wuhan, 430070 Hubei China
| | - Caie Wu
- 2College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037 China
| | - Bangzhu Peng
- 1Key Laboratory of Environment Correlative Dietology, Ministry of Education, College of Food Science & Technology, Huazhong Agricultural University, Wuhan, 430070 Hubei China
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17
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Abstract
Enzymatic processes are widely used in food industry, pharmacy, cosmetic and household chemistry, and medicine. However, the common and efficient application of the biological catalysts is limited by a number of factors that influence enzymes activity. One of the most frequent methods to improve the biocatalysts' properties is immobilization. This chapter presents a recent overview of our attempts to obtain the perfect biocatalytic system. The experimental approach, proposed in this chapter, includes the critical points like: the choice of adequate immobilization method, most suitable carrier, determination of enzyme kinetic parameters, stability, and toxicity of obtained systems. As carbon materials including graphene-derived materials offer unique properties and a plenty of different modifications, these parameters seem to be of decisive importance to understand chemistry of complex systems. Consideration of all the mentioned requirements lead us to the conclusion that graphene oxide could be the best candidate for support in perfect biocatalytic systems.
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Affiliation(s)
- Paulina Bolibok
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - Katarzyna Roszek
- Department of Biochemistry, Faculty of Biology and Environmental Protection, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - Marek Wiśniewski
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Toruń, Poland.
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18
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Farooq M, Almustapha MN, Imran M, Saeed MA, Andresen JM. In-situ regeneration of activated carbon with electric potential swing desorption (EPSD) for the H 2S removal from biogas. Bioresour Technol 2018; 249:125-131. [PMID: 29040845 DOI: 10.1016/j.biortech.2017.09.198] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 09/25/2017] [Accepted: 09/28/2017] [Indexed: 05/22/2023]
Abstract
In-situ regeneration of a granular activated carbon was conducted for the first time using electric potential swing desorption (EPSD) with potentials up to 30 V. The EPSD system was compared against a standard non-potential system using a fixed-bed reactor with a bed of 10 g of activated carbon treating a gas mixture with 10,000 ppm H2S. Breakthrough times, adsorption desorption volume, capacities, effect of regeneration and desorption kinetics were investigated. The analysis showed that desorption of H2S using the new EPSD system was 3 times quicker compared with the no potential system. Hence, physical adsorption using EPSD over activated carbon is efficient, safe and environmental friendly and could be used for the in-situ regeneration of granular activated carbon without using a PSA and/or TSA system. Additionally, adsorption and desorption cycles can be obtained with a classical two column system, which could lead towards a more efficient and economic biogas to biomethane process.
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Affiliation(s)
- M Farooq
- Institute of Mechanical, Process & Energy Engineering, Heriot-Watt University, UK; Department of Mechanical Engineering, University of Engineering & Technology Lahore, KSK Campus, Pakistan; Research Centre for Carbon Solutions, Heriot-Watt University, UK.
| | - M N Almustapha
- Institute of Mechanical, Process & Energy Engineering, Heriot-Watt University, UK; Research Centre for Carbon Solutions, Heriot-Watt University, UK
| | - M Imran
- Department of Energy Engineering, School of Engineering, University of Management & Technology, Lahore, Pakistan; Department of Mechanical Engineering, Technical University of Denmark, Denmark
| | - M A Saeed
- Department of Chemical and Polymer Engineering, UET Lahore Faisalabad Campus, Pakistan
| | - John M Andresen
- Institute of Mechanical, Process & Energy Engineering, Heriot-Watt University, UK; Research Centre for Carbon Solutions, Heriot-Watt University, UK
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Liu DM, Chen J, Shi YP. Tyrosinase immobilization on aminated magnetic nanoparticles by physical adsorption combined with covalent crosslinking with improved catalytic activity, reusability and storage stability. Anal Chim Acta 2017; 1006:90-98. [PMID: 30016268 DOI: 10.1016/j.aca.2017.12.022] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/24/2017] [Accepted: 12/17/2017] [Indexed: 02/04/2023]
Abstract
In the present study, the immobilization method of physical adsorption combined with covalent crosslinking was developed to avoid the shortcomings of both the noncovalent and covalent coupling methods. For the first time, tyrosinase (TYR) was immobilized on the surface of aminated magnetic nanoparticles (Fe3O4-NH2) by the developed method. TYR was firstly adsorbed on the surface of Fe3O4-NH2 by electrostatic interaction, and then by covalent crosslinking with glutaraldehyde (GA), TYR was firmly immobilized on the supports. The immobilized TYR showed enhanced pH and temperature endurances at the optimum pH of 7.0 and temperature of 35 °C. TYR reusability was significantly improved after immobilization and it retained 61.4 ± 2.3% of its initial activity after 5 repeated cycles. Immobilized TYR also showed improved storage stability (73.2 ± 1.1% after 30 days of storage at 4 °C). In addition, the immobilized TYR showed a higher biological affinity to substrate owing to the stabilization of TYR in its active conformation by electrostatic interaction prior to covalent crosslinking. Finally, the immobilized TYR was used to screen of enzyme inhibitors from 11 traditional Chinese medicines (TCMs) to validate whether this method can be used for enzyme inhibitor screening or not.
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Affiliation(s)
- Dong-Mei Liu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China; University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, PR China
| | - Juan Chen
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China.
| | - Yan-Ping Shi
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China.
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20
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Shen M, Rusling J, Dixit CK. Site-selective orientated immobilization of antibodies and conjugates for immunodiagnostics development. Methods 2017; 116:95-111. [PMID: 27876681 PMCID: PMC5374010 DOI: 10.1016/j.ymeth.2016.11.010] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 11/16/2016] [Accepted: 11/17/2016] [Indexed: 01/11/2023] Open
Abstract
Immobilized antibody systems are the key to develop efficient diagnostics and separations tools. In the last decade, developments in the field of biomolecular engineering and crosslinker chemistry have greatly influenced the development of this field. With all these new approaches at our disposal, several new immobilization methods have been created to address the main challenges associated with immobilized antibodies. Few of these challenges that we have discussed in this review are mainly associated to the site-specific immobilization, appropriate orientation, and activity retention. We have discussed the effect of antibody immobilization approaches on the parameters on the performance of an immunoassay.
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Affiliation(s)
- Min Shen
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060
| | - James Rusling
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136
- Department of Cell Biology, University of Connecticut Health Center, Farmington, Connecticut 060
- School of Chemistry, National University of Ireland at Galway, Galway, Ireland
| | - Chandra K Dixit
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060
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21
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Vessally E, Siadati SA, Hosseinian A, Edjlali L. Selective sensing of ozone and the chemically active gaseous species of the troposphere by using the C 20 fullerene and graphene segment. Talanta 2016; 162:505-510. [PMID: 27837863 DOI: 10.1016/j.talanta.2016.10.010] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 10/01/2016] [Accepted: 10/02/2016] [Indexed: 11/30/2022]
Abstract
OZONE is a key species in forming a layer in the atmosphere of earth that brings vita for our planet and supports the complex life. This three-atom molecule in the ozone-layer, is healing the earth's ecosystem by protecting it from dangerous rays of the sun. Until this molecule is in the stratosphere, it would support the natural order of the life; but, when it appears in our environment, damages will begin against us. In this project, we have tried to find a new way for beaconing ozone species in our environment via physical adsorption by the C20 fullerene and graphene segment as a sensor. To find the selectivity of this nano-sized segment in sensing ozone (O3), compared to the usual chemically active gasses of the troposphere like O2, N2, CO2, H2O, CH4, H2, and CO, the density of state (DOS) plots were analyzed, for each interacting species. The results showed that ozone could significantly change the electrical conductivity of C20 fullerene, for each adsorption step. Thus, this fullerene could clearly sense ozone in different adsorption steps; while, the graphene segment could do this only at the second step adsorption (/ΔEg-B/=0.016eV) (at the first adsorption step the /ΔEg-A/ is 0.00eV).
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Affiliation(s)
- Esmail Vessally
- Department of Chemistry, Payame Noor University, Tehran, Iran.
| | | | - Akram Hosseinian
- Department of Engineering Science, College of Engineering, University of Tehran, Tehran, Iran
| | - Ladan Edjlali
- Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, Iran
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Suma Y, Kang CS, Kim HS. Noncovalent and covalent immobilization of oxygenase on single-walled carbon nanotube for enzymatic decomposition of aromatic hydrocarbon intermediates. Environ Sci Pollut Res Int 2016; 23:1015-1024. [PMID: 25655752 DOI: 10.1007/s11356-015-4168-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 01/22/2015] [Indexed: 06/04/2023]
Abstract
The decomposition of various aromatic hydrocarbon intermediates was examined using a recombinant oxidative enzyme immobilized on single-walled carbon nanotubes (SWCNTs). Hydroxyquinol 1,2-dioxygenase (CphA-I), which catalyzes ring cleavage of catechol and its analogues, was obtained from Arthrobacter chlorophenolicus A6 via cloning, overexpression, and subsequent purification. This recombinant enzyme was immobilized on SWCNTs by physical adsorption and covalent coupling in the absence and presence of N-hydroxysuccinimide. The immobilization yield was as high as 52.1%, and a high level of enzyme activity of up to 64.7% was preserved after immobilization. Kinetic analysis showed that the substrate utilization rates (vmax) and catalytic efficiencies (kcat/KM) of the immobilized enzyme for all substrates evaluated were similar to those of the free enzyme, indicating minimal loss of enzyme activity during immobilization. The immobilized enzyme was more stable toward extreme pH, temperature, and ionic strength conditions than the free enzyme. Thus, the oxidative enzyme immobilized on SWCNTs can be used as an effective and stable biocatalyst for the biochemical remediation process if further investigations would be carried out under field conditions.
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Affiliation(s)
- Yanasinee Suma
- Department of Advanced Technology Fusion, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 143-701, Korea
- Department of Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 143-701, Korea
| | - Christina S Kang
- Department of Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 143-701, Korea
| | - Han S Kim
- Department of Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 143-701, Korea.
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Cohn C, Leung SL, Zha Z, Crosby J, Teng W, Wu X. Comparative study of antibody immobilization mediated by lipid and polymer fibers. Colloids Surf B Biointerfaces 2015; 134:1-7. [PMID: 26141437 PMCID: PMC7067562 DOI: 10.1016/j.colsurfb.2015.06.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 05/25/2015] [Accepted: 06/09/2015] [Indexed: 12/20/2022]
Abstract
Antibody immobilization and function retention are important to a variety of applications, including proteomics, drug discovery, diagnostics, and biosensors. The present study investigates antibody immobilization mediated by cholesteryl succinyl silane (CSS) fibers, in comparison to hydrophobic polycaprolactone (PCL) fibers and hydrophilic plasma-treated PCL fibers. When incubated with a model protein, the formation of protein aggregates is observed on hydrophobic PCL fibers but not on the more hydrophobic CSS fibers, indicating that CSS fibers immobilize proteins through mechanisms other than hydrophobic interaction. When exposed to a limited amount of antibody, CSS fibers immobilize more antibodies than plasma-treated PCL fibers and no fewer antibodies than PCL fibers. The function retention of antibodies immobilized on the fibers is analyzed using a cell-capture assay, which shows that the antibody-functionalized CSS fibrous matrices capture 6- or 7-fold more cells than the antibody-functionalized PCL or plasma-treated PCL fibrous matrices, respectively. Data collected from the study show that the lipid fiber-mediated immobilization of antibody not only maintains the advantages of physical immobilization such as easiness and rapidness of operation but also improves function retention.
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Affiliation(s)
- Celine Cohn
- Biomedical Engineering GIDP, University of Arizona, Thomas W. Keating Bioresearch Building, 1657 E Helen Street, Tucson, AZ 85721, USA
| | - Siu Ling Leung
- Department of Aerospace and Mechanical Engineering, University of Arizona, 1130N Mountain Ave, Tucson, AZ 85721, USA
| | - Zhengbao Zha
- Department of Aerospace and Mechanical Engineering, University of Arizona, 1130N Mountain Ave, Tucson, AZ 85721, USA
| | - Jessica Crosby
- Biomedical Engineering GIDP, University of Arizona, Thomas W. Keating Bioresearch Building, 1657 E Helen Street, Tucson, AZ 85721, USA
| | - Weibing Teng
- Department of Aerospace and Mechanical Engineering, University of Arizona, 1130N Mountain Ave, Tucson, AZ 85721, USA
| | - Xiaoyi Wu
- Biomedical Engineering GIDP, University of Arizona, Thomas W. Keating Bioresearch Building, 1657 E Helen Street, Tucson, AZ 85721, USA; Department of Aerospace and Mechanical Engineering, University of Arizona, 1130N Mountain Ave, Tucson, AZ 85721, USA.
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Pagán M, Suazo D, Del Toro N, Griebenow K. A comparative study of different protein immobilization methods for the construction of an efficient nano-structured lactate oxidase-SWCNT-biosensor. Biosens Bioelectron 2015; 64:138-46. [PMID: 25216450 PMCID: PMC4254293 DOI: 10.1016/j.bios.2014.08.072] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 08/26/2014] [Indexed: 11/28/2022]
Abstract
We constructed lactate biosensors by immobilization of lactate oxidase (LOx) onto a single-walled carbon nanotube (SWCNT) electrode. The first step of the sensor construction was the immobilization of oxidized SWCNT onto a platinum electrode modified with 4-aminothiophenol (4-ATP). Two enzyme immobilization methods were used to construct the biosensors, i.e., covalent immobilization using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC) and physical adsorption. Atomic force microscopy (AFM) experiments confirmed the immobilization of SWCNT during the biosensor construction and X-ray photoelectron spectroscopy (XPS) experiments confirmed covalent immobilization of LOx onto the SWCNT in the first method. The biosensor based on covalent enzyme immobilization showed a sensitivity of 5.8 μA/mM, a linearity up to 0.12 mM of L-lactate, and a detection limit of 4.0 μM. The biosensor based on protein adsorption displayed a sensitivity of 9.4 μA/mM, retaining linearity up to 0.18 mM of L-lactate with a detection limit of 3.0 μM. The difference in the biosensor response can be attributed to protein conformational or dynamical changes during covalent immobilization. The stability of the biosensors was tested at different temperatures and after different storage periods. The thermostability of the biosensors after incubation at 60 °C demonstrated that the biosensor with covalently immobilized LOx retained a higher response compared with the adsorbed protein. Long-term stability experiments show a better residual activity of 40% for the covalently immobilized protein compared to 20% of residual activity for the adsorbed protein after 25 d storage. Covalent protein immobilization was superior compared to adsorption in preserving biosensor functionality over extended time period.
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Affiliation(s)
- Miraida Pagán
- Department of Chemistry, University of Puerto Rico, Río Piedras Campus, P.O. Box 23346, San Juan 00931-3346, Puerto Rico.
| | - Dámaris Suazo
- Department of Chemistry, University of Puerto Rico, Río Piedras Campus, P.O. Box 23346, San Juan 00931-3346, Puerto Rico.
| | - Nicole Del Toro
- Department of Chemistry, University of Puerto Rico, Río Piedras Campus, P.O. Box 23346, San Juan 00931-3346, Puerto Rico.
| | - Kai Griebenow
- Department of Chemistry, University of Puerto Rico, Río Piedras Campus, P.O. Box 23346, San Juan 00931-3346, Puerto Rico.
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Huh JB, Lee JY, Jeon YC, Shin SW, Ahn JS, Ryu JJ. Physical stability of arginine-glycine-aspartic acid peptide coated on anodized implants after installation. J Adv Prosthodont 2013; 5:84-91. [PMID: 23755331 PMCID: PMC3675298 DOI: 10.4047/jap.2013.5.2.84] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 04/25/2013] [Accepted: 05/07/2013] [Indexed: 11/25/2022] Open
Abstract
PURPOSE The aim of this study was to evaluate the stability of arginine-glycine-aspartic acid (RGD) peptide coatings on implants by measuring the amount of peptide remaining after installation. MATERIALS AND METHODS Fluorescent isothiocyanate (FITC)-fixed RGD peptide was coated onto anodized titanium implants (width 4 mm, length 10 mm) using a physical adsorption method (P) or a chemical grafting method (C). Solid Rigid Polyurethane Foam (SRPF) was classified as either hard bone (H) or soft bone (S) according to its density. Two pieces of artificial bone were fixed in a customized jig, and coated implants were installed at the center of the boundary between two pieces of artificial bone. The test groups were classified as: P-H, P-S, C-H, or C-S. After each installation, implants were removed from the SRPF, and the residual amounts and rates of RGD peptide in implants were measured by fluorescence spectrometry. The Kruskal-Wallis test was used for the statistical analysis (α=0.05). RESULTS Peptide-coating was identified by fluorescence microscopy and XPS. Total coating amount was higher for physical adsorption than chemical grafting. The residual rate of peptide was significantly larger in the P-S group than in the other three groups (P<.05). CONCLUSION The result of this study suggests that coating doses depend on coating method. Residual amounts of RGD peptide were greater for the physical adsorption method than the chemical grafting method.
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Affiliation(s)
- Jung-Bo Huh
- Department of Prosthodontics, School of Dentistry, Dental Hospital, Dental Research Institute, Pusan National University, Yangsan, Republic of Korea
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