沸石改性聚丙烯酰胺复合材料对诱惑红色素的吸附研究
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摘要
本实验采用一锅法合成了沸石改性聚丙烯酰胺复合材料,并将其作为吸附剂,结合紫外-可见吸收光谱法,研究了其对诱惑红色素的吸附性能。探讨了溶液pH和振荡时间对吸附过程的影响,研究了吸附动力学、吸附等温线和吸附热力学,并对该复合材料进行了再生性能考察。结果表明:在溶液pH为6,诱惑红色素在振荡时间为80 min之内可达到吸附平衡,吸附过程符合拟二级动力学模型(R~2=0.9984)和Langmuir等温吸附模型;当温度为20℃时,ΔG=(4.23 kJ/mol,ΔH=39.01 kJ/mol,ΔS=145.22 J/mol/K;吸附剂在再生使用3次内吸附性稳定。由此可知,沸石改性聚丙烯酰胺复合材料对吸附诱惑红色素具有良好的吸附性和再生性。
In the present work,the adsorption of allura red was studied with the zeolite modified polyacrylamide composite as the adsorbent combined with a UV-absorption spectrometry.Effects of sample p H and contact time on the adsorption rate were investigated.Kinetics,isotherms,and thermodynamics studies were conducted for the adsorption process.And the regeneration of adsorbent was carried out.The result showed that the adsorption equilibrium of allura red was reached after the contact time was80 min at the sample pH of 6.The adsorption process of the zeolite modified polyacrylamide composite for allura red fitted the pseudo-second-order kinetic model( R~2= 0.9984) and Langmuir adsorption equation. When the temperature was 20 ℃,the changes of enthalpy( ΔH),entropy( ΔS),and Gibbs energy( ΔG) were 39.01 kJ/mol,145.22 J/mol/K,and( 4.23 k J/mol,respectively.The adsorption capacity of allura red did not obviously changed after the regeneration of three times. The study proved that the zeolite modified polyacrylamide composite for allura red had good adsorbability and regeneration.
In the present work,the adsorption of allura red was studied with the zeolite modified polyacrylamide composite as the adsorbent combined with a UV-absorption spectrometry.Effects of sample p H and contact time on the adsorption rate were investigated.Kinetics,isotherms,and thermodynamics studies were conducted for the adsorption process.And the regeneration of adsorbent was carried out.The result showed that the adsorption equilibrium of allura red was reached after the contact time was80 min at the sample pH of 6.The adsorption process of the zeolite modified polyacrylamide composite for allura red fitted the pseudo-second-order kinetic model( R~2= 0.9984) and Langmuir adsorption equation. When the temperature was 20 ℃,the changes of enthalpy( ΔH),entropy( ΔS),and Gibbs energy( ΔG) were 39.01 kJ/mol,145.22 J/mol/K,and( 4.23 k J/mol,respectively.The adsorption capacity of allura red did not obviously changed after the regeneration of three times. The study proved that the zeolite modified polyacrylamide composite for allura red had good adsorbability and regeneration.
引文
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[24]Panic V V,Velickovic S J.Removal of model cationic dye by adsorption onto poly(methacrylic acid)/zeolite hydrogel composites:Kinetics,equilibrium study and image analysis[J].Separation&Purification Technology,2014,122(3):384-394.
[25]Ohlin L,Grahn M.Detailed investigation of the binary adsorption of carbon dioxide and methane in Zeolite Na-ZSM-5studied using in situ ATR-FTIR spectroscopy[J].The Journal of Physical Chemistry C,2014,118(12):6207-6213.74
[26]Tong S,Liu Q,Li Y,et al.Preparation of porous polymer monolithic column incorporated with grapheme nanosheets for solid phase microextraction and enrichment of glucocorticoids[J].Journal of Chromatograghy A,2012,1253:22-31.
[2]Golka K,Kopps S,Myslak Z W.Carcinogenicity of azo colorants:Influence of solubility and bioavailability[J].Toxicology Letters,2004,151(1):203-210.
[3]Hawley C,Buckley R E,Hyperkiness and sensitivity to the aniline food dyes[J].Journal of Orthomolecular Psychiatry,1976,5(2):129-137.
[4]Li W J,Zhou X,Tong S S,et al.Poly(N-isopropylacrylamide-co-N,N'-methylene bisacrylamide)monolithic column embedded withγ-alumina nanoparticles microextraction coupled with high-performance liquid chromatography for the determination of synthetic food dyes in soft drink samples[J].Talanta,2013,105:386-392.
[5]Ueda A C,de Oliveira L,Hioka N,et al.Liquid-liquid extraction of basic yellow 28,basic blue 41,and Basic Red 46dyes from aqueous solutions with reverse micelles[J].Journal of Chemical&Engineering Data,2011,56(3),652-657.
[6]Zhou Z,Lin S,Yue T,et al.Adsorption of food dyes from aqueous solution by glutaraldehyde cross-linked magnetic chitosan nanoparticles[J].Journal of Food Engineering,2014,126(1):133-141
[7]Qi R,Zhou X,Li X,et al.Rapid identification of synthetic colorants in food samples by using indium oxide nanoparticlefunctionalized porous polymer monolith coupled with HPLC-MS/MS[J].Analyst,2014,139(23):6168-6177.
[8]Li W,Zhou X,Ye J,et al.Development of aγ-alumina nanoparticle-functionalized porous polymer monolith for the enrichment of Sudan dyes in red wine samples[J].Journal of Separation Science,2013,36(20):3330-3337.
[9]Su R,Zhao X,Li Z,et al.Poly(methacrylic acid-co-ethylene glycol dimethacrylate)monolith microextraction coupled with high performance liquid chromatography for the determination of phthalate esters in cosmetics[J].Analytica Chimica Acta,2010,676:103-108.
[10]谷晓稳,吕学举,贾琼,等.石墨烯/二氧化钛复合材料富集-石墨炉原子吸收光谱法测定铅和镉[J].分析化学,2013,41(3):417-421.
[11]赵方彪,宋乃忠,宁维坤,等.磁性金属有机骨架材料Fe3O4@NH2-MIL-53(Al)的制备及对铅的吸附研究[J].光谱学与光谱分析,2015(9):2439-2443.
[12]Gan Y,Tian N,Tian X,et al.Adsorption behavior of methylene blue on amine-functionalized ordered mesoporous alumina[J].Journal of Porous Materials,2015,22(1):147-155.
[13]Li W,Jia Q,Zhang Z et al.Preparation ofγ-alumina nanoparticle modified polyacrylamide composite and study on its solid phase extraction of Sunset Yellow[J].Korean Journal of Chemical Engineering,2016,33(4):1337-1344.
[14]Mahmoudi K,Hosni K,Hamdi N et al.Kinetics and equilibrium studies on removal of methylene blue and methyl orange by adsorption onto activated carbon prepared from date pits-A comparative study[J].Korean Journal of Chemical Engineering,2015,32(2):274-283.
[15]冯淑娟,李利军,夏兆博,等.活性炭负载壳聚糖的制备及其对糖汁清净性能研究[J].食品工业科技,2016,37(15):256-259,359.
[16]范毅武,冯钰锜,达世禄,等.β环糊精键合改性介孔硅胶的表征和吸附性能评价[J].应用化学,2004,21(9):878-883.
[17]田苗苗,苏日艳,贾琼,等.镧掺杂二氧化钛/沸石微柱在线预富集-分光光度法测定溶菌酶含量[J].分析化学,2011,39(1):103-106.
[18]Wang S,Li H,Xu L.Application of zeolite MCM-22 for basic dye removal from wastewater[J].J Colloid Interface Science,2006,295(1):71-78.
[19]Solisio C,Aliakbarian B.Methylene blue adsorption using chabazite:Kinetics and equilibrium modelling[J].Canadian Journal of Chemical Engneering,2017,95(9):1760-1767.
[20]Wang S,Li X,Wu H,etc.Advances in high permeability polymer-based membrane materials for CO2 separations[J].Energy&Environmental Science,2016,9(6):1863-1890.
[21]Fanta G F,Burr R C,Russell C R,et al.Graft copolymers of starch.I.Copolymerization of gelatinized wheat starch with acrylonitrile.Fractionation of copolymer and effect of solvent on copolymer composition[J].Journal of Applied Polymer Science,1966,10(6):929-937.
[22]Wu M,Wu R,Zhang Z,et al.Preparation and application of organic-silica hybrid monolithic capillary columns[J].Electrophoresis,2011,32(1):105-115.
[23]Ten-Doménech I,Martínez-Pérez-Cejuela H,Simó-Alfonso E,et al.Polymer-based materials modified with magnetite nanoparticles for enrichment of phospholipids[J].Talanta,2018,180:162-167.
[24]Panic V V,Velickovic S J.Removal of model cationic dye by adsorption onto poly(methacrylic acid)/zeolite hydrogel composites:Kinetics,equilibrium study and image analysis[J].Separation&Purification Technology,2014,122(3):384-394.
[25]Ohlin L,Grahn M.Detailed investigation of the binary adsorption of carbon dioxide and methane in Zeolite Na-ZSM-5studied using in situ ATR-FTIR spectroscopy[J].The Journal of Physical Chemistry C,2014,118(12):6207-6213.74
[26]Tong S,Liu Q,Li Y,et al.Preparation of porous polymer monolithic column incorporated with grapheme nanosheets for solid phase microextraction and enrichment of glucocorticoids[J].Journal of Chromatograghy A,2012,1253:22-31.
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