101
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Mubarak N, Sahu J, Abdullah E, Jayakumar N, Ganesan P. Microwave assisted multiwall carbon nanotubes enhancing Cd(II) adsorption capacity in aqueous media. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2014.09.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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102
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Zare-Zardini H, Amiri A, Shanbedi M, Taheri-Kafrani A, Kazi SN, Chew BT, Razmjou A. In vitro and in vivo study of hazardous effects of Ag nanoparticles and Arginine-treated multi walled carbon nanotubes on blood cells: application in hemodialysis membranes. J Biomed Mater Res A 2015; 103:2959-65. [PMID: 25690431 DOI: 10.1002/jbm.a.35425] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 02/03/2015] [Accepted: 02/06/2015] [Indexed: 01/13/2023]
Abstract
One of the novel applications of the nanostructures is the modification and development of membranes for hemocompatibility of hemodialysis. The toxicity and hemocompatibility of Ag nanoparticles and arginine-treated multiwalled carbon nanotubes (MWNT-Arg) and possibility of their application in membrane technology are investigated here. MWNT-Arg is prepared by amidation reactions, followed by characterization by FTIR spectroscopy, Raman spectroscopy, and thermogravimetric analysis. The results showed a good hemocompatibility and the hemolytic rates in the presence of both MWNT-Arg and Ag nanoparticles. The hemolytic rate of Ag nanoparticles was lower than that of MWNT-Arg. In vivo study revealed that Ag nanoparticle and MWNT-Arg decreased Hematocrit and mean number of red blood cells (RBC) statistically at concentration of 100 µg mL(-1) . The mean decrease of RBC and Hematocrit for Ag nanoparticles (18% for Hematocrit and 5.8 × 1,000,000/µL) was more than MWNT-Arg (20% for Hematocrit and 6 × 1000000/µL). In addition, MWNT-Arg and Ag nanoparticles had a direct influence on the White Blood Cell (WBC) drop. Regarding both nanostructures, although the number of WBC increased in initial concentration, it decreased significantly at the concentration of 100 µg mL(-1) . It is worth mentioning that the toxicity of Ag nanoparticle on WBC was higher than that of MWNT-Arg. Because of potent antimicrobial activity and relative hemocompatibility, MWNT-Arg could be considered as a new candidate for biomedical applications in the future especially for hemodialysis membranes.
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Affiliation(s)
- Hadi Zare-Zardini
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan, Iran.,Department of Hamtology and Oncology Research Center, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - Ahmad Amiri
- Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
| | - Mehdi Shanbedi
- Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Asghar Taheri-Kafrani
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan, Iran
| | - S N Kazi
- Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
| | - B T Chew
- Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
| | - Amir Razmjou
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan, Iran
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103
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Wu Q, Xiong ZH. Adsorption Behavior of Nitrofurantoin onto Multi-Walled Carbon Nanotubes and Magnetite (Fe3O4)-loaded Multi-Walled Carbon Nanotubes from Aqueous Solution. J DISPER SCI TECHNOL 2015. [DOI: 10.1080/01932691.2014.926251] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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104
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Czech B, Buda W. Photocatalytic treatment of pharmaceutical wastewater using new multiwall-carbon nanotubes/TiO2/SiO2 nanocomposites. ENVIRONMENTAL RESEARCH 2015; 137:176-84. [PMID: 25543548 DOI: 10.1016/j.envres.2014.12.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 12/03/2014] [Accepted: 12/05/2014] [Indexed: 05/07/2023]
Abstract
For the photocatalytic removal of bisphenol A (BPA) and carbamazepine (CBZ) from water solution a new multiwall-carbon nanotubes and TiO2/SiO2 nanocomposites (MWCNT-TiO2-SiO2) were applied. Nanocomposites with the addition of 0.15-17.8 wt% MWCNT show high potential for the removal of both pollutants. The starting concentration of each contaminant was halved during 20 min of UVA irradiation. The decomposition process of CBZ over investigated nanocomposites proceeded differently than it was observed for the classical photocatalyst P25. The kinetics of the removal followed as a pseudo-first order regime with the k1 in range 0.0827-0.1751 min(-1) for BPA and 0.0131-0.0743 min(-1) for CBZ. Toxicity to Vibrio fischeri and Daphnia magna was significantly reduced indicating formation of non-toxic products of photooxidation of tested contaminants.
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Affiliation(s)
- Bożena Czech
- Department of Environmental Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Lublin, Poland.
| | - Waldemar Buda
- Department of Adsorption, Faculty of Chemistry, Maria Curie-Skłodowska University, Lublin, Poland
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105
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Saridara C, Hussain CM, Ragunath S, Mitra S. Enhanced preconcentration of selected chlorofluorocarbons on multiwalled carbon nanotubes with polar functionalities. J Sep Sci 2015; 38:426-32. [DOI: 10.1002/jssc.201400741] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 11/05/2014] [Accepted: 11/06/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Chutarat Saridara
- Department of Chemistry and Environmental Science; New Jersey Institute of Technology; Newark NJ USA
- Faculty of Science and Technology; Department of Chemistry; Rajamangala University of Technology; Thanyaburi Thailand
| | | | - Smruti Ragunath
- Department of Chemistry and Environmental Science; New Jersey Institute of Technology; Newark NJ USA
| | - Somenath Mitra
- Department of Chemistry and Environmental Science; New Jersey Institute of Technology; Newark NJ USA
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106
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Gehrke I, Geiser A, Somborn-Schulz A. Innovations in nanotechnology for water treatment. Nanotechnol Sci Appl 2015; 8:1-17. [PMID: 25609931 PMCID: PMC4294021 DOI: 10.2147/nsa.s43773] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Important challenges in the global water situation, mainly resulting from worldwide population growth and climate change, require novel innovative water technologies in order to ensure a supply of drinking water and reduce global water pollution. Against this background, the adaptation of highly advanced nanotechnology to traditional process engineering offers new opportunities in technological developments for advanced water and wastewater technology processes. Here, an overview of recent advances in nanotechnologies for water and wastewater treatment processes is provided, including nanobased materials, such as nanoadsorbents, nanometals, nanomembranes, and photocatalysts. The beneficial properties of these materials as well as technical barriers when compared with conventional processes are reported. The state of commercialization is presented and an outlook on further research opportunities is given for each type of nanobased material and process. In addition to the promising technological enhancements, the limitations of nanotechnology for water applications, such as laws and regulations as well as potential health risks, are summarized. The legal framework according to nanoengineered materials and processes that are used for water and wastewater treatment is considered for European countries and for the USA.
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Affiliation(s)
- Ilka Gehrke
- Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, Oberhausen, Germany
| | - Andreas Geiser
- Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, Oberhausen, Germany
| | - Annette Somborn-Schulz
- Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, Oberhausen, Germany
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107
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Reza Sohrabi M, Mansouriieh N, Khosravi M, Zolghadr M. Removal of diazo dye Direct Red 23 from aqueous solution using zero-valent iron nanoparticles immobilized on multi-walled carbon nanotubes. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2015; 71:1367-1374. [PMID: 25945854 DOI: 10.2166/wst.2015.106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The present study immobilized nanoscale zero-valent iron (nZVI) on multi-walled carbon nanotubes (MWCNTs) to enhance the reactivity of nZVI and prevent its aggregation. This novel composite (nZVI/MWCNT) was characterized by scanning electron microscopy and X-ray diffraction. The results showed that nZVI particles dispersed on the surface of the MWCNTs. The composite was used to remove the diazo dye Direct Red 23 from aqueous solution. The effects of nZVI to MWCNT mass ratio, nanocomposite content, solution pH, initial dye concentration and temperature were studied. The optimum nZVI/MWCNT mass ratio was 1:3. Batch experiments suggest that degradation efficiency decreased as the initial dye concentration increased and increased as the nanocomposite content increased, decreasing the pH from 8 to 4. The reaction followed a pseudo-first-order model under the operational conditions investigated in this study.
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Affiliation(s)
- Mahmoud Reza Sohrabi
- Department of Chemistry, Islamic Azad University, North Tehran Branch, P.O. Box 1913674711, Tehran, I.R. Iran E-mail:
| | - Nafiseh Mansouriieh
- Department of Chemistry, Islamic Azad University, North Tehran Branch, P.O. Box 1913674711, Tehran, I.R. Iran E-mail:
| | - Morteza Khosravi
- Department of Chemistry, Islamic Azad University, North Tehran Branch, P.O. Box 1913674711, Tehran, I.R. Iran E-mail:
| | - Mohsen Zolghadr
- Department of Chemistry, Islamic Azad University, North Tehran Branch, P.O. Box 1913674711, Tehran, I.R. Iran E-mail:
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108
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Dichiara AB, Harlander SF, Rogers RE. Fixed bed adsorption of diquat dibromide from aqueous solution using carbon nanotubes. RSC Adv 2015. [DOI: 10.1039/c5ra11167f] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Carbon nanotubes are increasingly studied as attractive adsorbents for wastewater treatment. The present work exploits the attributes of different types of CNTs in a fixed bed column for the dynamic uptake of diquat dibromide from aqueous solutions.
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Affiliation(s)
- Anthony B. Dichiara
- Department of Chemical Engineering
- Rochester Institute of Technology
- Rochester
- USA
| | - Samuel F. Harlander
- Department of Chemical Engineering
- Rochester Institute of Technology
- Rochester
- USA
| | - Reginald E. Rogers
- Department of Chemical Engineering
- Rochester Institute of Technology
- Rochester
- USA
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109
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Zhao Y, Zhong Z, Low ZX, Yao Z. A multifunctional multi-walled carbon nanotubes/ceramic membrane composite filter for air purification. RSC Adv 2015. [DOI: 10.1039/c5ra18200j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Carbon nanotubes (CNTs) are very small diameter fibers that have the potential to be integrated into filters to further increase particle capture efficiency.
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Affiliation(s)
- Yang Zhao
- State Key Laboratory of Materials-Oriented Chemical Engineering
- National Engineering Research Center for Special Separation Membrane
- Nanjing Tech University
- Nanjing 210009
- China
| | - Zhaoxiang Zhong
- State Key Laboratory of Materials-Oriented Chemical Engineering
- National Engineering Research Center for Special Separation Membrane
- Nanjing Tech University
- Nanjing 210009
- China
| | - Ze-Xian Low
- Centre for Advanced Separations Engineering and Membranes@Bath
- Department of Chemical Engineering
- University of Bath
- Bath BA2 7AY
- UK
| | - Zhong Yao
- State Key Laboratory of Materials-Oriented Chemical Engineering
- National Engineering Research Center for Special Separation Membrane
- Nanjing Tech University
- Nanjing 210009
- China
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110
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Shen W, Li X, Zhang H. The initial adsorption process of benzene in double-walled carbon nanotubes studied by in situ solid-state NMR. RSC Adv 2015. [DOI: 10.1039/c5ra12490e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Adsorption kinetics of benzene in double-walled carbon nanotubes at the very earliest stages were directly monitored for the first time by using in situ solid-state 13C NMR.
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Affiliation(s)
- Wanling Shen
- College of Chemistry and Chemical Engineering
- Henan University of Technology
- Zhengzhou 450001
- P. R. China
| | - Xin Li
- College of Chemistry and Chemical Engineering
- Henan University of Technology
- Zhengzhou 450001
- P. R. China
| | - Hongbo Zhang
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
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111
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Wong KC, Goh PS, Ng BC, Ismail AF. Thin film nanocomposite embedded with polymethyl methacrylate modified multi-walled carbon nanotubes for CO2 removal. RSC Adv 2015. [DOI: 10.1039/c5ra00039d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Thin film nanocomposite loaded with milled polymethyl methacrylate grafted multi-walled carbon nanotubes achieved 29%, 47% and 9% increment in CO2 permeance, CO2/N2 and CO2/CH4 selectivity respectively compared to its thin film composite counterpart.
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Affiliation(s)
- K. C. Wong
- Advanced Membrane Technology Research Centre
- Faculty of Petroleum and Renewable Energy Engineering
- Universiti Teknologi Malaysia
- Malaysia
| | - P. S. Goh
- Advanced Membrane Technology Research Centre
- Faculty of Petroleum and Renewable Energy Engineering
- Universiti Teknologi Malaysia
- Malaysia
| | - B. C. Ng
- Advanced Membrane Technology Research Centre
- Faculty of Petroleum and Renewable Energy Engineering
- Universiti Teknologi Malaysia
- Malaysia
| | - A. F. Ismail
- Advanced Membrane Technology Research Centre
- Faculty of Petroleum and Renewable Energy Engineering
- Universiti Teknologi Malaysia
- Malaysia
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112
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Deb AKS, Ali SM, Shenoy KT. Unanticipated favoured adsorption affinity of Th(iv) ions towards bidentate carboxylate functionalized carbon nanotubes (CNT–COOH) over tridentate diglycolamic acid functionalized CNT: density functional theoretical investigation. RSC Adv 2015. [DOI: 10.1039/c5ra16651a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
CNT–COOH has higher adsorption affinity for Th4+ in aqueous solution compared to CNT–DGA, whereas pristine CNT has nil.
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Affiliation(s)
- A. K. Singha Deb
- Chemical Engineering Division
- Bhabha Atomic Research Centre
- Mumbai
- India – 40085
- Homi Bhabha National Institute
| | - Sk. M. Ali
- Chemical Engineering Division
- Bhabha Atomic Research Centre
- Mumbai
- India – 40085
- Homi Bhabha National Institute
| | - K. T. Shenoy
- Chemical Engineering Division
- Bhabha Atomic Research Centre
- Mumbai
- India – 40085
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113
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Das R, Abd Hamid SB, Ali ME, Ismail AF, Annuar M, Ramakrishna S. Multifunctional carbon nanotubes in water treatment: The present, past and future. DESALINATION 2014; 354:160-179. [DOI: 10.1016/j.desal.2014.09.032] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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114
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Ramírez R, Singh JK, Müller-Plathe F, Böhm MC. Ice and water droplets on graphite: A comparison of quantum and classical simulations. J Chem Phys 2014; 141:204701. [DOI: 10.1063/1.4901562] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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115
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Singha Deb A, Ali S, Shenoy K, Ghosh S. Adsorption of Eu3+and Am3+ion towards hard donor-based diglycolamic acid-functionalised carbon nanotubes: density functional theory guided experimental verification. MOLECULAR SIMULATION 2014. [DOI: 10.1080/08927022.2014.977891] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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116
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Characterization of the electric double layers of multi-walled carbon nanotubes, laponite and nanotube + laponite hybrids in aqueous suspensions. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.09.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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117
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Rusen E, Mocanu A, Nistor LC, Dinescu A, Călinescu I, Mustăţea G, Voicu ŞI, Andronescu C, Diacon A. Design of antimicrobial membrane based on polymer colloids/multiwall carbon nanotubes hybrid material with silver nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2014; 6:17384-17393. [PMID: 25230817 DOI: 10.1021/am505024p] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The aim of this study was to obtain membranes with antimicrobial activity presenting a complex sandwich-type structure. The outer layers are comprised of poly(methyl methacrylate) membranes, whereas the inner active layer consists of a modified commercial membrane to achieve antimicrobial properties. This activity arises due to the presence of silver nanoparticles in a material with a hybrid composition deposited on a commercial membrane. This hybrid material consists of polymer colloids and multiwall carbon nanotubes used for both the stabilization of the active layer by the interconnections of the polymer particles and as active component. The filtration tests revealed a good stability of the materials and an increased hydrophilicity of the hybrid membranes. The antimicrobial properties have been evaluated using Staphylococcus aureus and Escherichia coli, and have been correlated with the content and migration rate of silver ions.
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Affiliation(s)
- Edina Rusen
- Department of Bioresources and Polymer Science, University Politehnica of Bucharest , 149 Calea Victoriei, RO-010072 Bucharest, Romania
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118
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Xing L, Xie Y, Minakata D, Cao H, Xiao J, Zhang Y, Crittenden JC. Activated carbon enhanced ozonation of oxalate attributed to HO oxidation in bulk solution and surface oxidation: effect of activated carbon dosage and pH. J Environ Sci (China) 2014; 26:2095-2105. [PMID: 25288554 DOI: 10.1016/j.jes.2014.08.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 01/27/2014] [Accepted: 02/11/2014] [Indexed: 06/03/2023]
Abstract
Ozonation of oxalate in aqueous phase was performed with a commercial activated carbon (AC) in this work. The effect of AC dosage and solution pH on the contribution of hydroxyl radicals (HO) in bulk solution and oxidation on the AC surface to the removal of oxalate was studied. We found that the removal of oxalate was reduced by tert-butyl alcohol (tBA) with low dosages of AC, while it was hardly affected by tBA when the AC dosage was greater than 0.3g/L. tBA also inhibited ozone decomposition when the AC dosage was no more than 0.05g/L, but it did not work when the AC dosage was no less than 0.1g/L. These observations indicate that HO in bulk solution and oxidation on the AC surface both contribute to the removal of oxalate. HO oxidation in bulk solution is significant when the dosage of AC is low, whereas surface oxidation is dominant when the dosage of AC is high. The oxalate removal decreased with increasing pH of the solution with an AC dosage of 0.5g/L. The degradation of oxalate occurs mainly through surface oxidation in acid and neutral solution, but through HO oxidation in basic bulk solution. A mechanism involving both HO oxidation in bulk solution and surface oxidation was proposed for AC enhanced ozonation of oxalate.
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Affiliation(s)
- Linlin Xing
- National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China; Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Beijing Engineering Research Center of Process Pollution Control, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Yongbing Xie
- National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China; Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Beijing Engineering Research Center of Process Pollution Control, Beijing 100190, China.
| | - Daisuke Minakata
- Department of Civil and Environmental Engineering, Michigan Technological University, Houghton, MI 49931, United States
| | - Hongbin Cao
- National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China; Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Beijing Engineering Research Center of Process Pollution Control, Beijing 100190, China.
| | - Jiadong Xiao
- National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China; Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Beijing Engineering Research Center of Process Pollution Control, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yi Zhang
- National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China; Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Beijing Engineering Research Center of Process Pollution Control, Beijing 100190, China
| | - John C Crittenden
- School of Civil and Environmental Engineering, Brook Byers Institute for Sustainable Systems, Georgia Institute of Technology, Atlanta, GA 30332, United States
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119
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Li X, Hou Z, Zhang Y, Zhang G, Lian J, Lin J. New insight into modulated up-conversion luminescent silica nanotubes as efficient adsorbents for colored effluents. Dalton Trans 2014; 43:15457-64. [DOI: 10.1039/c4dt01552e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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120
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Wang J, Fu W, He X, Yang S, Zhu W. Catalytic wet air oxidation of phenol with functionalized carbon materials as catalysts: reaction mechanism and pathway. J Environ Sci (China) 2014; 26:1741-1749. [PMID: 25108731 DOI: 10.1016/j.jes.2014.06.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 12/22/2013] [Accepted: 01/28/2014] [Indexed: 06/03/2023]
Abstract
The development of highly active carbon material catalysts in catalytic wet air oxidation (CWAO) has attracted a great deal of attention. In this study different carbon material catalysts (multi-walled carbon nanotubes, carbon fibers and graphite) were developed to enhance the CWAO of phenol in aqueous solution. The functionalized carbon materials exhibited excellent catalytic activity in the CWAO of phenol. After 60 min reaction, the removal of phenol was nearly 100% over the functionalized multi-walled carbon, while it was only 14% over the purified multi-walled carbon under the same reaction conditions. Carboxylic acid groups introduced on the surface of the functionalized carbon materials play an important role in the catalytic activity in CWAO. They can promote the production of free radicals, which act as strong oxidants in CWAO. Based on the analysis of the intermediates produced in the CWAO reactions, a new reaction pathway for the CWAO of phenol was proposed in this study. There are some differences between the proposed reaction pathway and that reported in the literature. First, maleic acid is transformed directly into malonic acid. Second, acetic acid is oxidized into an unknown intermediate, which is then oxidized into CO2 and H2O. Finally, formic acid and oxalic acid can mutually interconvert when conditions are favorable.
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Affiliation(s)
- Jianbing Wang
- School of Chemical and Environmental Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China. E-mail: .
| | - Wantao Fu
- School of Chemical and Environmental Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China. E-mail:
| | - Xuwen He
- School of Chemical and Environmental Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China. E-mail:
| | - Shaoxia Yang
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Wanpeng Zhu
- School of Environment, Tsinghua University, Beijing 100084, China
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121
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Anick DJ. Static Density Functional Study of Graphene–Hexagonal Bilayer Ice Interaction. J Phys Chem A 2014; 118:7498-506. [PMID: 24641236 DOI: 10.1021/jp500360n] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David J. Anick
- Laboratory for Water and
Surface Studies Department of Chemistry, Tufts University, 62
Pearson Avenue, Medford, Massachusetts 02155, Unites States
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122
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Huang Y, Li J, Chen X, Wang X. Applications of conjugated polymer based composites in wastewater purification. RSC Adv 2014. [DOI: 10.1039/c4ra11496e] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
This review describes the application of conjugated polymer (polyaniline, polypyrrole, and polythiophene) based composites in wastewater purification.
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Affiliation(s)
- Yongshun Huang
- School of Environment and Chemical Engineering
- North China Electric Power University
- Beijing, P. R. China
- Department of Chemistry
- The University of Cincinnati
| | - Jiaxing Li
- School of Environment and Chemical Engineering
- North China Electric Power University
- Beijing, P. R. China
- Institute of Plasma Physics
- Chinese Academy of Sciences
| | | | - Xiangke Wang
- School of Environment and Chemical Engineering
- North China Electric Power University
- Beijing, P. R. China
- Faculty of Engineering
- King Abdulaziz University
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