The Experts below are selected from a list of 42540 Experts worldwide ranked by ideXlab platform
Frantisek Nerud - One of the best experts on this subject based on the ideXlab platform.
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decolorization of OranGe G and remazol brilliant blue r by the white rot funGus dichomitus squalens toxicoloGical evaluation and morpholoGical study
Chemosphere, 2007Co-Authors: Ivana Eichlerova, Ladislav Homolka, Oldřich Benada, Olga Kofroňova, Tomas Hubalek, Frantisek NerudAbstract:Abstract Dichomitus squalens efficiently decolorized both OranGe G and Remazol Brilliant Blue R (RBBR) at concentrations of 0.5 G l−1 and 3 G l−1 in static and shaken culture and also on solid medium within 14 d. The presence of the dyes in the culture medium mostly caused a decrease in biomass production and in Growth rate, which was more siGnificant in the case of RBBR. After 14 d of cultivation, electron microscopy showed substantial morpholoGical chanGes in mycelia of D. squalens GrowinG in media containinG dyes. The hyphae deformations were more intensively manifested in solid media than in liquid culture. In all the cases, the morpholoGical chanGes were more prominent in the presence of RBBR. HiGher concentrations of both dyes brouGht about more intensive chanGes. The toxicity of synthetic dyes OranGe G and RBBR was tested usinG a bioassay based on the Growth inhibition of duckweed Lemna minor. Two endpoints such as the number of fronds and their weiGht were studied durinG the bioassay. The results showed hiGher toxicity of RBBR than that of OranGe G. The toxicity of both dyes decreased after the decolorization process.
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synthetic dye decolorization capacity of white rot funGus dichomitus squalens
Bioresource Technology, 2006Co-Authors: Ivana Eichlerova, Ladislav Homolka, Frantisek NerudAbstract:The ability to decolorize eiGht chemically different synthetic dyes (OranGe G, Amaranth, OranGe I, Remazol Brilliant Blue R (RBBR), Cu-phthalocyanin, Poly R-478, Malachite Green and Crystal Violet) by the white rot funGus Dichomitus squalens was evaluated on aGar plates. The funGus showed hiGh decolorization capacity and was able to decolorize all dyes tested, but not to the same extent. Some of the dyes did not limit the decolorization capacity of the strain tested even at a concentration of 2 G/l. The presence of the dyes in solid media reduced the mycelial Growth rate of D. squalens; a positive correlation was found between the Growth rate and the decolorization ability. Decolorization of OranGe G and RBBR was studied also in liquid culture, where both dyes caused an enhancement of liGninolytic enzyme and overall hydroGen peroxide production and a decrease of biomass production. RBBR was removed to a hiGher extent than OranGe G.
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OranGe G and remazol brilliant blue r decolorization by white rot funGi dichomitus squalens ischnoderma resinosum and pleurotus calyptratus
Chemosphere, 2005Co-Authors: Ivana Eichlerova, Ladislav Homolka, Ludmila Lisa, Frantisek NerudAbstract:Thirty different white rot strains were screened for OranGe G and Remazol Brilliant Blue R (RBBR) decolorization on aGar plates. Three promisinG strains, Dichomitus squalens, Ischnoderma resinosum and Pleurotus calyptratus, selected on the basis of this screeninG, were used for decolorization study in liquid media. All three strains efficiently decolorized both OranGe G and RBBR, but they differed in decolorization capacity dependinG on cultivation conditions and liGninolytic enzyme production. Two different decolorization patterns were found in these strains: OranGe G decolorization in I. resinosum and P. calyptratus was caused mainly by laccase, while RBBR decolorization was effected by manGanese peroxidase (MnP); in D. squalens laccase and MnP cooperated in the decolorization processes.
Ivana Eichlerova - One of the best experts on this subject based on the ideXlab platform.
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decolorization of OranGe G and remazol brilliant blue r by the white rot funGus dichomitus squalens toxicoloGical evaluation and morpholoGical study
Chemosphere, 2007Co-Authors: Ivana Eichlerova, Ladislav Homolka, Oldřich Benada, Olga Kofroňova, Tomas Hubalek, Frantisek NerudAbstract:Abstract Dichomitus squalens efficiently decolorized both OranGe G and Remazol Brilliant Blue R (RBBR) at concentrations of 0.5 G l−1 and 3 G l−1 in static and shaken culture and also on solid medium within 14 d. The presence of the dyes in the culture medium mostly caused a decrease in biomass production and in Growth rate, which was more siGnificant in the case of RBBR. After 14 d of cultivation, electron microscopy showed substantial morpholoGical chanGes in mycelia of D. squalens GrowinG in media containinG dyes. The hyphae deformations were more intensively manifested in solid media than in liquid culture. In all the cases, the morpholoGical chanGes were more prominent in the presence of RBBR. HiGher concentrations of both dyes brouGht about more intensive chanGes. The toxicity of synthetic dyes OranGe G and RBBR was tested usinG a bioassay based on the Growth inhibition of duckweed Lemna minor. Two endpoints such as the number of fronds and their weiGht were studied durinG the bioassay. The results showed hiGher toxicity of RBBR than that of OranGe G. The toxicity of both dyes decreased after the decolorization process.
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synthetic dye decolorization capacity of white rot funGus dichomitus squalens
Bioresource Technology, 2006Co-Authors: Ivana Eichlerova, Ladislav Homolka, Frantisek NerudAbstract:The ability to decolorize eiGht chemically different synthetic dyes (OranGe G, Amaranth, OranGe I, Remazol Brilliant Blue R (RBBR), Cu-phthalocyanin, Poly R-478, Malachite Green and Crystal Violet) by the white rot funGus Dichomitus squalens was evaluated on aGar plates. The funGus showed hiGh decolorization capacity and was able to decolorize all dyes tested, but not to the same extent. Some of the dyes did not limit the decolorization capacity of the strain tested even at a concentration of 2 G/l. The presence of the dyes in solid media reduced the mycelial Growth rate of D. squalens; a positive correlation was found between the Growth rate and the decolorization ability. Decolorization of OranGe G and RBBR was studied also in liquid culture, where both dyes caused an enhancement of liGninolytic enzyme and overall hydroGen peroxide production and a decrease of biomass production. RBBR was removed to a hiGher extent than OranGe G.
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OranGe G and remazol brilliant blue r decolorization by white rot funGi dichomitus squalens ischnoderma resinosum and pleurotus calyptratus
Chemosphere, 2005Co-Authors: Ivana Eichlerova, Ladislav Homolka, Ludmila Lisa, Frantisek NerudAbstract:Thirty different white rot strains were screened for OranGe G and Remazol Brilliant Blue R (RBBR) decolorization on aGar plates. Three promisinG strains, Dichomitus squalens, Ischnoderma resinosum and Pleurotus calyptratus, selected on the basis of this screeninG, were used for decolorization study in liquid media. All three strains efficiently decolorized both OranGe G and RBBR, but they differed in decolorization capacity dependinG on cultivation conditions and liGninolytic enzyme production. Two different decolorization patterns were found in these strains: OranGe G decolorization in I. resinosum and P. calyptratus was caused mainly by laccase, while RBBR decolorization was effected by manGanese peroxidase (MnP); in D. squalens laccase and MnP cooperated in the decolorization processes.
Enrique Brillas - One of the best experts on this subject based on the ideXlab platform.
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Effective removal of OranGe-G azo dye from water by electro-Fenton and photoelectro-Fenton processes usinG a boron-doped diamond anode
Separation and Purification Technology, 2016Co-Authors: Gabriel Fernandes Pereira, Giancarlo Richard Salazar-banda, Katlin Ivon Barrios Eguiluz, Abdellatif El-ghenymy, Abdoulaye Thiam, Carlos Carlesi, Enrique BrillasAbstract:Abstract Coupled electrochemical advanced oxidation processes like electro-Fenton (EF) and photoelectro-Fenton (PEF) were evaluated for the treatment of an aqueous solution containinG 100 mG L –1 total orGanic carbon of the low biodeGradable azo dye OranGe-G (Acid OranGe 10) usinG a boron-doped diamond (BDD)/air-diffusion cell. It was confirmed the existence of synerGic effects between UVA liGht photo-oxidation and/or hydroxyl radicals ( OH) formed from water oxidation at the BDD anode and the Fenton reaction between added Fe 2+ and H 2 O 2 produced at the air-diffusion cathode. A rapid discoloration of the solution was always obtained, mainly attributed to the oxidation of the azo dye with OH Generated from Fenton’s reaction in EF and PEF. The color loss followed a pseudo-first-order kinetics, controlled by the applied current. The dye mineralization was enhanced with increasinG current due to the Greater production of OH and finally, short-linear carboxylic acids like oxalic and oxamic were pre-eminently accumulated. The Fe(III) complexes of these acids were slowly removed by OH in EF and rapidly photodecomposed by UVA liGht in PEF up to 98% mineralization. Sulfate and nitrate ions were accumulated in the medium durinG both EF and PEF treatments. The more powerful coupled PEF process is then able to efficiently deGrade streams contaminated with OranGe G.
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decolorization and mineralization of OranGe G azo dye solutions by anodic oxidation with a boron doped diamond anode in divided and undivided tank reactors
Electrochimica Acta, 2014Co-Authors: Abdellatif Elghenymy, Francesc Centellas, Jose Antonio Garrido, Rosa Maria Rodriguez, Ignasi Sires, P L Cabot, Enrique BrillasAbstract:Abstract The decolorization and mineralization of 100 cm3 of 0.52-6.34 mmol dm−3 OranGe G azo dye solutions at pH 3.0 and current density between 33.3 and 150 mA cm−2 have been studied by anodic oxidation (AO) usinG a divided or undivided tank reactor with a boron-doped diamond (BDD) anode and a stainless steel cathode. In both systems, orGanics were destroyed by hydroxyl radicals Generated at the BDD anode from water oxidation. Solutions with 0.52 mmol dm−3 of the dye were completely decolorized in both cells, more rapidly at Greater current density. The divided cell always Gave faster decolorization than the undivided one. Overall mineralization in the divided tank reactor was attained in less than 330 min operatinG at current densities ≥ 66.7 mA cm−2, whereas in the undivided cell, this was feasible at times as lonG as 420 min for 150 mA cm−2. For OranGe G contents up to 6.34 mmol dm−3, total mineralization at 100 mA cm−2 was also more easily reached in the divided cell. The mineralization current efficiency always rose at lower current density and hiGher dye content. The dye decayed obeyinG a pseudo-first-order kinetics and its apparent rate constant increased at hiGher current density. A similar electrolysis time was required for total decolorization and disappearance of OranGe G, indicatinG that aromatic by-products were rapidly destroyed and did not accumulate in the medium. Final carboxylic acids like maleic, tartronic, acetic, formic, oxalic and oxamic were Generated, whereas ammonium and sulfate were the main inorGanic ions released durinG OranGe G mineralization.
Meiqiang Cai - One of the best experts on this subject based on the ideXlab platform.
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rapid decolorization of dye OranGe G by microwave enhanced fenton like reaction with delafossite type cufeo2
Science of The Total Environment, 2017Co-Authors: Meiqiang Cai, Yizu Zhu, Chunying Dong, Zongsu Wei, Shengdong Pan, Ruiyang Xiao, Micong JinAbstract:Abstract Bimetallic oxide CuFeO2 as a new heteroGeneous catalyst has shown much hiGher catalytic ability for activatinG peroxide than sinGle-metal oxides. The present work demonstrated a synerGistic microwave (MW) enhanced Fenton-like process with CuFeO2 for rapid decolorization of azo dye OranGe G (OG). The MW irradiation dramatically enhanced the OG deGradation efficiency, achievinG 99.9% decolorization within 15 min at pH 5. The XRD analysis of reused CuFeO2, toGether with metal leachinG tests, indicated merits of recyclinG for CuFeO2. The subsequent surface element analysis by XPS for fresh and used CuFeO2 showed a complex network for reactions between copper-iron redox pairs and surface hydroxyl Groups, leadinG to a synerGistic Fenton-like system accelerated by MW irradiation. In the CuFeO2 initiated Fenton-like reactions, several oxidant species (i.e., OH, O2 −, electron hole, and FeIV O) responsible to the OG oxidation were identified by quenchinG experiments, showinG the MW Generated hiGh temperature and “hot spots” enhanced the yield of OH by Generation of electron-hole pairs. Further, the 26 detected deGradation products confirmed the OH dominant oxidation of OG. This study shows that the MW-enhanced Fenton-like reaction usinG CuFeO2 has potential applications for rapid decolorization of dye effluent.
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sono advanced fenton decolorization of azo dye OranGe G analysis of synerGistic effect and mechanisms
Ultrasonics Sonochemistry, 2016Co-Authors: Meiqiang Cai, Micong Jin, Xiao Qin Wei, Haojie Zhang, Chunying Dong, Guanghu Lian, Zongsu WeiAbstract:In this study, a successful decolorization of OranGe G was achieved by means of couplinG zero valent iron (ZVI), H2O2 and ultrasound (US) under acidic pH conditions. The synerGistic effect and characterization of potential roles of the factors includinG ZVI, tert-Butanol as radical scavenGer, dissolved ferrous ions and H2O2 Generated from sonication were evaluated in this sono-advanced Fenton process (SAFP) system. A clear synerGy was evident in terms of decolorization rate and the TOC removal as the input of US enhanced the activity of the Fe(0)/H2O2 system. The results suGGested that the ZVI was potential replacement for the Fe(2+) ion. This remarkable activity was attributed to the capacity of Fe(2+) formed and reduction of sonic-dissolved Fe(2+) concentration by the formation of {Fe·Fe(2+)}. The modification of the condition of H2O2 addition such as the dosaGe and input method showed siGnificant variations in terms of decolorization rate. This result indicated that the optimal external addition of H2O2 and input method is a limited factor of decolorization rate due to its comparatively insufficient Generated by ultrasound.
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decolorization of azo dyes OranGe G usinG hydrodynamic cavitation coupled with heteroGeneous fenton process
Ultrasonics Sonochemistry, 2016Co-Authors: Meiqiang Cai, Micong Jin, Yizu Zhu, Xiaoqing Wei, Haojie Zhang, Chunying Dong, Zongsu WeiAbstract:The present work demonstrates the application of the combination of hydrodynamic cavitation (HC) and the heteroGeneous Fenton process (HF, Fe(0)/H2O2) for the decolorization of azo dye OranGe G (OG). The effects of main affectinG operation conditions such as the inlet fluid pressure, initial concentration of OG, H2O2 and zero valent iron (ZVI), the fixed position of ZVI, and medium pH on decolorization efficiency were discussed with Guidelines for selection of optimum parameters. The results revealed that the acidic conditions are preferred for OG decolorizaiton. The decolorization rate increased with increasinG H2O2 and ZVI concentration and decreased with increasinG OG initial concentration. Besides, the decolorization rate was stronGly dependent on the fixed position of ZVI. The analysis results of deGradation products usinG liquid chromatoGraphy-ESI-TOF mass spectrometry revealed that the deGradation mechanism of OG proceeds mainly via reductive cleavaGe of the azo linkaGe due to the attack of hydroxyl radical. The present work has conclusively established that the combination of HC and HF can be more enerGy efficient and Gives hiGher decolorization rate of OG as compared with HC and HF alone.
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decolorization of azo dye OranGe G by aluminum powder enhanced by ultrasonic irradiation
Ultrasonics Sonochemistry, 2015Co-Authors: Meiqiang Cai, Xiao Qin Wei, Zhi Jun Song, Micong JinAbstract:Abstract In this work, the decolorization of azo dye OranGe G (OG) in aqueous solution by aluminum powder enhanced by ultrasonic irradiation (AlP-UI) was investiGated. The effects of various operatinG operational parameters such as the initial pH, initial OG concentration, AlP dosaGe, ultrasound power and added hydroGen peroxide (H2O2) concentration were studied. The results showed that the decolorization rate was enhanced when the aqueous OG was irradiated simultaneously by ultrasound in the AlP-acid systems. The decolorization rate decreased with the increase of both initial pH values of 2.0–4.0 and OG initial concentrations of 10–80 mG/L, increased with the ultrasound power enhancinG from 500 to 900 W. An optimum value was reached at 2.0 G/L of the AlP dosaGe in the ranGe of 0.5–2.5 G/L. The decolorization rate enhanced siGnificantly by the addition of hydroGen peroxide in the ranGe of 10–100 mM to AlP-UI system reached an optimum value of 0.1491 min−1. The decolorization of OG appears to involve primarily oxidative steps, the cleavaGe of N N bond, which were verificated by the intermediate products of OG under the optimal tested deGradation system, aniline and 1-amino-2-naphthol-6,8-disulfonate detected by the LC–MS.
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novel amphiphilic polymeric ionic liquid solid phase micro extraction membrane for the preconcentration of aniline as deGradation product of azo dye OranGe G under sonication by liquid chromatoGraphy tandem mass spectrometry
Journal of Chromatography A, 2014Co-Authors: Meiqiang Cai, Xiaoqing Wei, Micong JinAbstract:A novel amphiphilic polymeric ionic liquid membrane containinG a hydrophilic bromide anion and a hydrophobic carbonyl Group was synthesized in dimethylformamide (DMF) systems usinG the ionic liquid 1-butyl-3-vinylimidazolium bromide (BVImBr) and the methylmethacrylate (MMA) as monomers. The prepared amphiphilic ploy-methylmethacrylate-1-butyl-3-vinylimidazolium bromide (MMA-BVImBr) was characterized by a scanninG electron microscope and an infrared spectrum instrument. The results of solid-phase micro-extraction membrane (SPMM) experiments showed that the adsorption capacity of membrane was about 0.76μGμG(-1) for aniline. Based on this, a sensitive method for the determination of trace aniline, as a deGradation product of azo dye OranGe G under sonication, was developed by liquid chromatoGraphy-tandem mass spectrometry (LC-MS/MS). The calibration curve showed a Good linearity ranGinG from 0.5 to 10.0μGL(-1) with a correlation coefficient value of 0.9998. The limit of quantification was 0.5μGL(-1). The recoveries ranGed from 90.6% to 96.1%. The intra- and inter-day relative standard deviations were less than 8.3% and 10.9%. The developed SPMM-LC-MS/MS method was used successfully for preconcentration of trace aniline produced durinG the sonication of OranGe G solution.
Micong Jin - One of the best experts on this subject based on the ideXlab platform.
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rapid decolorization of dye OranGe G by microwave enhanced fenton like reaction with delafossite type cufeo2
Science of The Total Environment, 2017Co-Authors: Meiqiang Cai, Yizu Zhu, Chunying Dong, Zongsu Wei, Shengdong Pan, Ruiyang Xiao, Micong JinAbstract:Abstract Bimetallic oxide CuFeO2 as a new heteroGeneous catalyst has shown much hiGher catalytic ability for activatinG peroxide than sinGle-metal oxides. The present work demonstrated a synerGistic microwave (MW) enhanced Fenton-like process with CuFeO2 for rapid decolorization of azo dye OranGe G (OG). The MW irradiation dramatically enhanced the OG deGradation efficiency, achievinG 99.9% decolorization within 15 min at pH 5. The XRD analysis of reused CuFeO2, toGether with metal leachinG tests, indicated merits of recyclinG for CuFeO2. The subsequent surface element analysis by XPS for fresh and used CuFeO2 showed a complex network for reactions between copper-iron redox pairs and surface hydroxyl Groups, leadinG to a synerGistic Fenton-like system accelerated by MW irradiation. In the CuFeO2 initiated Fenton-like reactions, several oxidant species (i.e., OH, O2 −, electron hole, and FeIV O) responsible to the OG oxidation were identified by quenchinG experiments, showinG the MW Generated hiGh temperature and “hot spots” enhanced the yield of OH by Generation of electron-hole pairs. Further, the 26 detected deGradation products confirmed the OH dominant oxidation of OG. This study shows that the MW-enhanced Fenton-like reaction usinG CuFeO2 has potential applications for rapid decolorization of dye effluent.
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sono advanced fenton decolorization of azo dye OranGe G analysis of synerGistic effect and mechanisms
Ultrasonics Sonochemistry, 2016Co-Authors: Meiqiang Cai, Micong Jin, Xiao Qin Wei, Haojie Zhang, Chunying Dong, Guanghu Lian, Zongsu WeiAbstract:In this study, a successful decolorization of OranGe G was achieved by means of couplinG zero valent iron (ZVI), H2O2 and ultrasound (US) under acidic pH conditions. The synerGistic effect and characterization of potential roles of the factors includinG ZVI, tert-Butanol as radical scavenGer, dissolved ferrous ions and H2O2 Generated from sonication were evaluated in this sono-advanced Fenton process (SAFP) system. A clear synerGy was evident in terms of decolorization rate and the TOC removal as the input of US enhanced the activity of the Fe(0)/H2O2 system. The results suGGested that the ZVI was potential replacement for the Fe(2+) ion. This remarkable activity was attributed to the capacity of Fe(2+) formed and reduction of sonic-dissolved Fe(2+) concentration by the formation of {Fe·Fe(2+)}. The modification of the condition of H2O2 addition such as the dosaGe and input method showed siGnificant variations in terms of decolorization rate. This result indicated that the optimal external addition of H2O2 and input method is a limited factor of decolorization rate due to its comparatively insufficient Generated by ultrasound.
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decolorization of azo dyes OranGe G usinG hydrodynamic cavitation coupled with heteroGeneous fenton process
Ultrasonics Sonochemistry, 2016Co-Authors: Meiqiang Cai, Micong Jin, Yizu Zhu, Xiaoqing Wei, Haojie Zhang, Chunying Dong, Zongsu WeiAbstract:The present work demonstrates the application of the combination of hydrodynamic cavitation (HC) and the heteroGeneous Fenton process (HF, Fe(0)/H2O2) for the decolorization of azo dye OranGe G (OG). The effects of main affectinG operation conditions such as the inlet fluid pressure, initial concentration of OG, H2O2 and zero valent iron (ZVI), the fixed position of ZVI, and medium pH on decolorization efficiency were discussed with Guidelines for selection of optimum parameters. The results revealed that the acidic conditions are preferred for OG decolorizaiton. The decolorization rate increased with increasinG H2O2 and ZVI concentration and decreased with increasinG OG initial concentration. Besides, the decolorization rate was stronGly dependent on the fixed position of ZVI. The analysis results of deGradation products usinG liquid chromatoGraphy-ESI-TOF mass spectrometry revealed that the deGradation mechanism of OG proceeds mainly via reductive cleavaGe of the azo linkaGe due to the attack of hydroxyl radical. The present work has conclusively established that the combination of HC and HF can be more enerGy efficient and Gives hiGher decolorization rate of OG as compared with HC and HF alone.
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decolorization of azo dye OranGe G by aluminum powder enhanced by ultrasonic irradiation
Ultrasonics Sonochemistry, 2015Co-Authors: Meiqiang Cai, Xiao Qin Wei, Zhi Jun Song, Micong JinAbstract:Abstract In this work, the decolorization of azo dye OranGe G (OG) in aqueous solution by aluminum powder enhanced by ultrasonic irradiation (AlP-UI) was investiGated. The effects of various operatinG operational parameters such as the initial pH, initial OG concentration, AlP dosaGe, ultrasound power and added hydroGen peroxide (H2O2) concentration were studied. The results showed that the decolorization rate was enhanced when the aqueous OG was irradiated simultaneously by ultrasound in the AlP-acid systems. The decolorization rate decreased with the increase of both initial pH values of 2.0–4.0 and OG initial concentrations of 10–80 mG/L, increased with the ultrasound power enhancinG from 500 to 900 W. An optimum value was reached at 2.0 G/L of the AlP dosaGe in the ranGe of 0.5–2.5 G/L. The decolorization rate enhanced siGnificantly by the addition of hydroGen peroxide in the ranGe of 10–100 mM to AlP-UI system reached an optimum value of 0.1491 min−1. The decolorization of OG appears to involve primarily oxidative steps, the cleavaGe of N N bond, which were verificated by the intermediate products of OG under the optimal tested deGradation system, aniline and 1-amino-2-naphthol-6,8-disulfonate detected by the LC–MS.
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novel amphiphilic polymeric ionic liquid solid phase micro extraction membrane for the preconcentration of aniline as deGradation product of azo dye OranGe G under sonication by liquid chromatoGraphy tandem mass spectrometry
Journal of Chromatography A, 2014Co-Authors: Meiqiang Cai, Xiaoqing Wei, Micong JinAbstract:A novel amphiphilic polymeric ionic liquid membrane containinG a hydrophilic bromide anion and a hydrophobic carbonyl Group was synthesized in dimethylformamide (DMF) systems usinG the ionic liquid 1-butyl-3-vinylimidazolium bromide (BVImBr) and the methylmethacrylate (MMA) as monomers. The prepared amphiphilic ploy-methylmethacrylate-1-butyl-3-vinylimidazolium bromide (MMA-BVImBr) was characterized by a scanninG electron microscope and an infrared spectrum instrument. The results of solid-phase micro-extraction membrane (SPMM) experiments showed that the adsorption capacity of membrane was about 0.76μGμG(-1) for aniline. Based on this, a sensitive method for the determination of trace aniline, as a deGradation product of azo dye OranGe G under sonication, was developed by liquid chromatoGraphy-tandem mass spectrometry (LC-MS/MS). The calibration curve showed a Good linearity ranGinG from 0.5 to 10.0μGL(-1) with a correlation coefficient value of 0.9998. The limit of quantification was 0.5μGL(-1). The recoveries ranGed from 90.6% to 96.1%. The intra- and inter-day relative standard deviations were less than 8.3% and 10.9%. The developed SPMM-LC-MS/MS method was used successfully for preconcentration of trace aniline produced durinG the sonication of OranGe G solution.
