Adsorption/desorption of toluene on a hypercrosslinked polymeric resin in a highly humid gas stream
|
摘要
In many sources of volatile organic compounds(VOCs), large amounts of water vapor come from the air and the reactors. The relative humidity(RH) of exhaust gas is normally N60% and is supersaturated. Maintaining the property of adsorbent on VOCs in a highly humid gas stream is a serious industrial problem. In this study, the adsorption/desorption behavior of toluene in a micro-mesoporous polymeric resin was investigated in a highly humid environment to explore the influence of abound water vapor on resin adsorption and regeneration.This resin could selectively adsorb toluene at an RH of 80%, and its adsorption property was unaffected by the presence of water vapor. In the case of humidity saturation, the resin displayed a high adsorption capacity at a moisture content of b30%. Therefore, the polymer resin is an excellent water-resistant adsorbent of VOCs.In the regenerative experiment, the resin maintained its original adsorption capability after four adsorption/desorption cycles of toluene purging with nitrogen gas at 120 °C. The resin exhibited excellent regeneration performance at high humidity.
In many sources of volatile organic compounds(VOCs), large amounts of water vapor come from the air and the reactors. The relative humidity(RH) of exhaust gas is normally N60% and is supersaturated. Maintaining the property of adsorbent on VOCs in a highly humid gas stream is a serious industrial problem. In this study, the adsorption/desorption behavior of toluene in a micro-mesoporous polymeric resin was investigated in a highly humid environment to explore the influence of abound water vapor on resin adsorption and regeneration.This resin could selectively adsorb toluene at an RH of 80%, and its adsorption property was unaffected by the presence of water vapor. In the case of humidity saturation, the resin displayed a high adsorption capacity at a moisture content of b30%. Therefore, the polymer resin is an excellent water-resistant adsorbent of VOCs.In the regenerative experiment, the resin maintained its original adsorption capability after four adsorption/desorption cycles of toluene purging with nitrogen gas at 120 °C. The resin exhibited excellent regeneration performance at high humidity.
In many sources of volatile organic compounds(VOCs), large amounts of water vapor come from the air and the reactors. The relative humidity(RH) of exhaust gas is normally N60% and is supersaturated. Maintaining the property of adsorbent on VOCs in a highly humid gas stream is a serious industrial problem. In this study, the adsorption/desorption behavior of toluene in a micro-mesoporous polymeric resin was investigated in a highly humid environment to explore the influence of abound water vapor on resin adsorption and regeneration.This resin could selectively adsorb toluene at an RH of 80%, and its adsorption property was unaffected by the presence of water vapor. In the case of humidity saturation, the resin displayed a high adsorption capacity at a moisture content of b30%. Therefore, the polymer resin is an excellent water-resistant adsorbent of VOCs.In the regenerative experiment, the resin maintained its original adsorption capability after four adsorption/desorption cycles of toluene purging with nitrogen gas at 120 °C. The resin exhibited excellent regeneration performance at high humidity.
引文
[1]G.Gra?yna,C.Milena,W.Lidia,In vitro assays as a tool for determination of VOCs toxic effect on respiratory system:A critical review,TrAC Trends Anal.Chem.77(2016)14-22.
[2]T.Petry,D.Vitale,F.J.Joachim,B.Smith,L.Cruse,R.Mascarenhas,S.Schneider,M.Singal,Human health risk evaluation of selected VOC,SVOC and particulate emissions from scented candles,Regul.Toxicol.Pharmacol.69(2014)55-70.
[3]W.Wei,S.X.Wang,J.M.Hao,S.Cheng,Projection of anthropogenic volatile organic compounds(VOCs)emissions in China for the period 2010-2020,J.Atmos.Environ.45(2011)6863-6871.
[4]R.R.Liu,C.D.Wu,M.J.Fu,Research review on volatile organic compounds(VOCs)removal by adsorption,J.Guangdong Chem.Ind.41(2014)139-140.
[5]G.Rioland,H.Nouali,T.J.Daou,D.Faye,J.Patarin,Adsorption of volatile organic compounds in composite zeolites pellets for space decontamination,Adsorption 23(2017)395-403.
[6]K.J.Kim,C.S.Kang,Y.J.You,M.C.Chung,M.W.Woo,W.J.Jeong,N.C.Park,H.G.Ahn,Adsorption-desorption characteristics of VOCs over impregnated activated carbons,Catal.Today 111(2006)223-228.
[7]C.Y.Wu,T.W.Chung,T.C.Yang,M.T.Chen,Dynamic determination of the concentration of volatile alcohols in a fixed bed of zeolite 13X by FT-IR,J.Hazard.Mater.137(2006)893-898.
[8]K.C.Nien,F.T.Chang,M.B.Chang,Adsorption-desorption characteristics of methyl ethyl ketone with modified activated carbon and inhibition of 2,3-butanediol production,J.Air Waste Manage.Assoc.65(2015)1317-1326.
[9]F.Xin,Z.X.Yuan,W.C.Wang,Adsorption and desorption characteristics of allochroic silica gel and ZSM-5 zeolite to water,Chem.Ind.Eng.Prog.34(2015)1730-1736.
[10]A.Iliyas,M.H.Zahedi-Niaki,M.Ei?,S.Kaliaguine,Control of hydrocarbon cold-start emissions:a search for potential adsorbents,Microporous Mesoporous Mater.102(2007)171-177.
[11]L.M.Sun,L.P.Zhang,J.H.Xue,B.Z.Li,Research Progress on preparation methods and applications of activated carbon,Chem.Bioeng.33(2016)5-8.
[12]Q.Huang,X.Xue,R.Zhou,Catalytic behavior and durability of CeO2,or/and CuOmodified USY zeolite catalysts for decomposition of chlorinated volatile organic compounds,J.Mol.Catal.A Chem.344(2011)74-82.
[13]Y.B.Liu,Y.Z.Li,X.Ding,Adsorption simulation of basic nitrogen compounds in ZSM-5 and USY zeolites by grand canonical Monte Carlo method,Adv.Mater.Res.1096(2015)189-193.
[14]H.Zaitan,M.H.Manero,H.Valdés,Application of high silica zeolite ZSM-5 in a hybrid treatment process based on sequential adsorption and ozonation for VOCs elimination,J.Environ.Sci.41(2016)59-68.
[15]L.J.Jia,W.H.Yu,C.Long,A.M.Li,Adsorption equilibrium and dynamics of gasoline vapors onto polymeric adsorbents,Environ.Sci.Pollut.Res.21(2014)3756-3763.
[16]N.Fontanals,M.Galià,P.A.G.Cormack,R.M.Marcé,D.C.Sherrington,F.Borrull,Evaluation of a new hypercrosslinked polymer as a sorbent for solid-phase extraction of polar compounds,J.Chromatogr.A 1075(2005)51-56.
[17]C.Valderrama,J.L.Cortina,A.Farran,X.Gamisans,C.Lao,Kinetics of sorption of polyaromatic hydrocarbons onto granular activated carbon and Macronet hyper-cross-linked polymers(MN200),J.Colloid Interface Sci.310(2007)35-46.
[18]H.F.Huang,X.Chu,H.F.Lu,B.Zhang,Y.F.Chen,Dynamic adsorption of volatile organic compounds on two kinds of mesoporous molecular sieves,China Environ.Sci.30(2010)442-447.
[19]W.J.Qiu,K.Dou,Y.Zhou,H.F.Huang,Y.F.Chen,H.F.Lu,Hierarchical pore structure of activated carbon fabricated by CO2/microwave for VOCs adsorption,Chin.J.Chem.Eng.26(2018)81-88.
[20]H.F.Lu,J.J.Cao,Y.Zhou,D.L.Zhan,Y.F.Chen,Novel hydrophobic PDVB/R-SiO2for adsorption of volatile organic compounds from highly humid gas stream,J.Hazard.Mater.262(2013)83-90.
[21]H.F.Huang,Y.Y.Gu,C.Yin,C.H.Zhou,H.F.Lu,The adsorption-desorption performance of volatile organic compounds(VOCs)onto polymer resin and mesoporous molecular sieves,China Environ.Sci.32(2012)62-68.
[22]S.W.Nahm,G.S.Wang,Y.K.Park,C.K.Sang,Thermal and chemical regeneration of spent activated carbon and its adsorption property for toluene,Chem.Eng.J.210(2012)500-509.
[23]W.Jiang,Study on Activated Carbon Fibers Adsorption-Nitrogen Desorption and Recover Multi-Component VOCs,Ms.Thesis,Huazhong University of Science and Technology,China,2013.
[24]H.F.Huang,W.J.Rong,Y.Y.Gu,R.J.Chang,H.F.Lu,Adsorption and desorption of VOCs on the ZSM-5 zeolite,Acta Sci.Circumst.34(2014)3144-3151.
[2]T.Petry,D.Vitale,F.J.Joachim,B.Smith,L.Cruse,R.Mascarenhas,S.Schneider,M.Singal,Human health risk evaluation of selected VOC,SVOC and particulate emissions from scented candles,Regul.Toxicol.Pharmacol.69(2014)55-70.
[3]W.Wei,S.X.Wang,J.M.Hao,S.Cheng,Projection of anthropogenic volatile organic compounds(VOCs)emissions in China for the period 2010-2020,J.Atmos.Environ.45(2011)6863-6871.
[4]R.R.Liu,C.D.Wu,M.J.Fu,Research review on volatile organic compounds(VOCs)removal by adsorption,J.Guangdong Chem.Ind.41(2014)139-140.
[5]G.Rioland,H.Nouali,T.J.Daou,D.Faye,J.Patarin,Adsorption of volatile organic compounds in composite zeolites pellets for space decontamination,Adsorption 23(2017)395-403.
[6]K.J.Kim,C.S.Kang,Y.J.You,M.C.Chung,M.W.Woo,W.J.Jeong,N.C.Park,H.G.Ahn,Adsorption-desorption characteristics of VOCs over impregnated activated carbons,Catal.Today 111(2006)223-228.
[7]C.Y.Wu,T.W.Chung,T.C.Yang,M.T.Chen,Dynamic determination of the concentration of volatile alcohols in a fixed bed of zeolite 13X by FT-IR,J.Hazard.Mater.137(2006)893-898.
[8]K.C.Nien,F.T.Chang,M.B.Chang,Adsorption-desorption characteristics of methyl ethyl ketone with modified activated carbon and inhibition of 2,3-butanediol production,J.Air Waste Manage.Assoc.65(2015)1317-1326.
[9]F.Xin,Z.X.Yuan,W.C.Wang,Adsorption and desorption characteristics of allochroic silica gel and ZSM-5 zeolite to water,Chem.Ind.Eng.Prog.34(2015)1730-1736.
[10]A.Iliyas,M.H.Zahedi-Niaki,M.Ei?,S.Kaliaguine,Control of hydrocarbon cold-start emissions:a search for potential adsorbents,Microporous Mesoporous Mater.102(2007)171-177.
[11]L.M.Sun,L.P.Zhang,J.H.Xue,B.Z.Li,Research Progress on preparation methods and applications of activated carbon,Chem.Bioeng.33(2016)5-8.
[12]Q.Huang,X.Xue,R.Zhou,Catalytic behavior and durability of CeO2,or/and CuOmodified USY zeolite catalysts for decomposition of chlorinated volatile organic compounds,J.Mol.Catal.A Chem.344(2011)74-82.
[13]Y.B.Liu,Y.Z.Li,X.Ding,Adsorption simulation of basic nitrogen compounds in ZSM-5 and USY zeolites by grand canonical Monte Carlo method,Adv.Mater.Res.1096(2015)189-193.
[14]H.Zaitan,M.H.Manero,H.Valdés,Application of high silica zeolite ZSM-5 in a hybrid treatment process based on sequential adsorption and ozonation for VOCs elimination,J.Environ.Sci.41(2016)59-68.
[15]L.J.Jia,W.H.Yu,C.Long,A.M.Li,Adsorption equilibrium and dynamics of gasoline vapors onto polymeric adsorbents,Environ.Sci.Pollut.Res.21(2014)3756-3763.
[16]N.Fontanals,M.Galià,P.A.G.Cormack,R.M.Marcé,D.C.Sherrington,F.Borrull,Evaluation of a new hypercrosslinked polymer as a sorbent for solid-phase extraction of polar compounds,J.Chromatogr.A 1075(2005)51-56.
[17]C.Valderrama,J.L.Cortina,A.Farran,X.Gamisans,C.Lao,Kinetics of sorption of polyaromatic hydrocarbons onto granular activated carbon and Macronet hyper-cross-linked polymers(MN200),J.Colloid Interface Sci.310(2007)35-46.
[18]H.F.Huang,X.Chu,H.F.Lu,B.Zhang,Y.F.Chen,Dynamic adsorption of volatile organic compounds on two kinds of mesoporous molecular sieves,China Environ.Sci.30(2010)442-447.
[19]W.J.Qiu,K.Dou,Y.Zhou,H.F.Huang,Y.F.Chen,H.F.Lu,Hierarchical pore structure of activated carbon fabricated by CO2/microwave for VOCs adsorption,Chin.J.Chem.Eng.26(2018)81-88.
[20]H.F.Lu,J.J.Cao,Y.Zhou,D.L.Zhan,Y.F.Chen,Novel hydrophobic PDVB/R-SiO2for adsorption of volatile organic compounds from highly humid gas stream,J.Hazard.Mater.262(2013)83-90.
[21]H.F.Huang,Y.Y.Gu,C.Yin,C.H.Zhou,H.F.Lu,The adsorption-desorption performance of volatile organic compounds(VOCs)onto polymer resin and mesoporous molecular sieves,China Environ.Sci.32(2012)62-68.
[22]S.W.Nahm,G.S.Wang,Y.K.Park,C.K.Sang,Thermal and chemical regeneration of spent activated carbon and its adsorption property for toluene,Chem.Eng.J.210(2012)500-509.
[23]W.Jiang,Study on Activated Carbon Fibers Adsorption-Nitrogen Desorption and Recover Multi-Component VOCs,Ms.Thesis,Huazhong University of Science and Technology,China,2013.
[24]H.F.Huang,W.J.Rong,Y.Y.Gu,R.J.Chang,H.F.Lu,Adsorption and desorption of VOCs on the ZSM-5 zeolite,Acta Sci.Circumst.34(2014)3144-3151.