改性甜菜纤维的制备及其在糖液脱色中的应用
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摘要
以甜菜粕纤维(SBPF)为原料,通过环氧氯丙烷/乙二胺对其进行改性,获得一种新型的纤维素类吸附剂,研究这种改性甜菜粕纤维对糖液的脱色作用。通过X-射线衍射、傅里叶变换红外光谱和扫描电镜对甜菜粕纤维进行结构表征。以改性甜菜粕纤维中氮元素增加量(△N%)为指标,确定甜菜粕纤维胺化反应的最佳工艺条件是:乙二胺质量分数30%、反应时间6 h、反应温度80℃和NaHCO3质量分数1.5%。在此条件下,获得的改性产物中氮元素增加量为1.23%。FTIR分析结果表明:改性甜菜粕纤维吸附剂发生胺化反应,其对糖液的脱色能力是因胺基基团的引入;改性甜菜粕纤维中氮元素增加量与糖液浊度去除率和脱色率呈正相关的关系。本研究表明,改性甜菜粕纤维可用于糖液脱色,是一种前景广阔的脱色剂。
A new adsorbent was prepared for sugar decolorization by the reaction between sugar beet pulp fiber(SBPF) and epichlorohydrin/ethylenediamine(EDA). The performance of the modified sugar beet pulp fiber(MSBPF)was characterized by X-ray diffraction(XRD), Fourier transform infrared spectroscopy(FTIR) and scanning electron micrographs(SEM). The modification parameters were optimized as temperature of 80 ℃, reaction time of 6 h, EDA content of30% and sodium bicarbonate content of 1.5%, which yielded 1.23% nitrogen content in MSBPF. FTIR analysis indicated that the adsorption performance could be attributed to the graft of amine groups. The adding nitrogen content of the MSBPF was found closely related to the decolorization and turbidity removal. The results showed that MSBPF is a prospective adsorbent that could be used in sugar decolorizing application.
A new adsorbent was prepared for sugar decolorization by the reaction between sugar beet pulp fiber(SBPF) and epichlorohydrin/ethylenediamine(EDA). The performance of the modified sugar beet pulp fiber(MSBPF)was characterized by X-ray diffraction(XRD), Fourier transform infrared spectroscopy(FTIR) and scanning electron micrographs(SEM). The modification parameters were optimized as temperature of 80 ℃, reaction time of 6 h, EDA content of30% and sodium bicarbonate content of 1.5%, which yielded 1.23% nitrogen content in MSBPF. FTIR analysis indicated that the adsorption performance could be attributed to the graft of amine groups. The adding nitrogen content of the MSBPF was found closely related to the decolorization and turbidity removal. The results showed that MSBPF is a prospective adsorbent that could be used in sugar decolorizing application.
引文
[1]赵毅,于淑娟,朱思明,等.甜菜粕对Fe(Ⅲ)的吸附平衡和动力学研究[J].现代食品科技, 2014, 30(1):28-32.
[2] BACIU I E, JORDENING H J. Kinetics of galacturonic acid release from sugar-beet pulp[J]. Enzyme and Microbial Technology, 2004, 34(5):505-512.
[3] O’CONNELL D W, BIRKINSHAW C, O’DWYER T F. Heavy metal adsorbents prepared from the modification of cellulose:A review[J]. Bioresource Technology, 2008, 99(15):6709-6724.
[4] MIKHAILOV Y M, ALESHIN V V, RUZANOV S N. High-rate combustion of cellulose nitrate in filled polymer systems[J]. Russian Journal of Physical Chemistry B, 2011, 5(3):499-501.
[5] OLARU N. On structural modification of cellulose in carboxymethylation process[C].[s.l.]:Fifth European Workshop on Lignocellulosics and Pulp Aviero, Portugal, 1998:259-262.
[6]柴博华.改性甘蔗渣吸附剂的制备及其对糖液脱色作用的研究[D].广州:华南理工大学, 2013.
[7] OKANO T, SARKO A. Mercerization of cellulose.II. Alkali-cellulose intermediates and a possible mercerization mechanism[J]. Journal of Applied Polymer Science, 1985, 30(1):325-332.
[8] LIU Z T, YANG Y, ZHANG L, et al. Study on the performance of ramie fiber modified with ethylenediamine[J]. Carbohydrate Polymers, 2008, 71(1):18-25.
[9] XU X, GAO B Y, YUE Q Y, et al. Preparation of agricultural by-product based anion exchanger and its utilization for nitrate and phosphate removal[J].Bioresource technology, 2010, 101(22):8558-8564.
[10] CHEN S, YUE Q, GAO B, et al. Equilibrium and kinetic adsorption study of the adsorptive removal of Cr(VI)using modified wheat residue[J]. Journal of Colloid and Interface Science, 2010, 349(1):256-264.
[11] MISHRA A, JHA B. Isolation and characterization of extracellular polymeric substances from micro-algae Dunaliellasalina under salt stress[J]. Bioresource Technology, 2009, 100(13):3382-3386.
[12] RODRIGUES L A, DA S M. Thermodynamic and kinetic investigations of phosphate adsorption onto hydrous niobium oxide prepared by homogeneous solution method[J]. Desalination, 2010, 263(1):29-35.
[13] KLEMM D, HEUBLEIN B, FINK H P, et al. Cellulose:fascinating biopolymer and sustainable raw material[J]. Angewandte Chemie International Edi tion, 2005, 44(22):3358-3393.
[14] ZULUAGA R, PUTAUX J L, CRUZ J, et al. Cellulose microfibrils from banana rachis:Effect of alkaline treatments on structural and morphological features[J]. Carbohydrate Polymers, 2009, 76(1):51-59.
[15] OH S Y, YOO D I, SHIN Y, et al. Crystalline structure analysis of cellulose treated with sodium hydroxide and carbon dioxide by means of X-ray diffraction and FTIR spectroscopy[J]. Carbohydrate Research, 2005, 340(15):2376-2391.
[16] ZHANG W, YAN H, LI H, et al. Removal of dyes from aqueous solutions by straw based adsorbents:Batch and column studies[J]. Chemical Engineering Journal, 2011, 168(3):1120-1127.
[17] WARANUSANTIGUL P, POKETHITIYOOK P, KRUATRACHUE M, et al. Kinetics of basic dye(methylene blue)biosorption by giant duckweed(Spirodelapolyrrhiza)[J]. Environmental Pollution, 2003, 125(3):385-392.
[18] YAMAKI S B, BARROS D S, GARCIA C M, et al. Spectroscopic studies of the intermolecular interactions of congo red and tinopal CBS with modified cellulose fibers[J]. Langmuir, 2005, 21(12):5414-5420.
[19] VADIVELAN V, KUMAR K V. Equilibrium, kinetics, mechanism, and process design for the sorption of methylene blue onto rice husk[J]. Journal of Colloid and Interface Science, 2005, 286(1):90-100.
[20] FRIES W. Cane sugar decolorization by ion exchange resins[J]. International Sugar Journal, 1982,84(1007):325-328.
[2] BACIU I E, JORDENING H J. Kinetics of galacturonic acid release from sugar-beet pulp[J]. Enzyme and Microbial Technology, 2004, 34(5):505-512.
[3] O’CONNELL D W, BIRKINSHAW C, O’DWYER T F. Heavy metal adsorbents prepared from the modification of cellulose:A review[J]. Bioresource Technology, 2008, 99(15):6709-6724.
[4] MIKHAILOV Y M, ALESHIN V V, RUZANOV S N. High-rate combustion of cellulose nitrate in filled polymer systems[J]. Russian Journal of Physical Chemistry B, 2011, 5(3):499-501.
[5] OLARU N. On structural modification of cellulose in carboxymethylation process[C].[s.l.]:Fifth European Workshop on Lignocellulosics and Pulp Aviero, Portugal, 1998:259-262.
[6]柴博华.改性甘蔗渣吸附剂的制备及其对糖液脱色作用的研究[D].广州:华南理工大学, 2013.
[7] OKANO T, SARKO A. Mercerization of cellulose.II. Alkali-cellulose intermediates and a possible mercerization mechanism[J]. Journal of Applied Polymer Science, 1985, 30(1):325-332.
[8] LIU Z T, YANG Y, ZHANG L, et al. Study on the performance of ramie fiber modified with ethylenediamine[J]. Carbohydrate Polymers, 2008, 71(1):18-25.
[9] XU X, GAO B Y, YUE Q Y, et al. Preparation of agricultural by-product based anion exchanger and its utilization for nitrate and phosphate removal[J].Bioresource technology, 2010, 101(22):8558-8564.
[10] CHEN S, YUE Q, GAO B, et al. Equilibrium and kinetic adsorption study of the adsorptive removal of Cr(VI)using modified wheat residue[J]. Journal of Colloid and Interface Science, 2010, 349(1):256-264.
[11] MISHRA A, JHA B. Isolation and characterization of extracellular polymeric substances from micro-algae Dunaliellasalina under salt stress[J]. Bioresource Technology, 2009, 100(13):3382-3386.
[12] RODRIGUES L A, DA S M. Thermodynamic and kinetic investigations of phosphate adsorption onto hydrous niobium oxide prepared by homogeneous solution method[J]. Desalination, 2010, 263(1):29-35.
[13] KLEMM D, HEUBLEIN B, FINK H P, et al. Cellulose:fascinating biopolymer and sustainable raw material[J]. Angewandte Chemie International Edi tion, 2005, 44(22):3358-3393.
[14] ZULUAGA R, PUTAUX J L, CRUZ J, et al. Cellulose microfibrils from banana rachis:Effect of alkaline treatments on structural and morphological features[J]. Carbohydrate Polymers, 2009, 76(1):51-59.
[15] OH S Y, YOO D I, SHIN Y, et al. Crystalline structure analysis of cellulose treated with sodium hydroxide and carbon dioxide by means of X-ray diffraction and FTIR spectroscopy[J]. Carbohydrate Research, 2005, 340(15):2376-2391.
[16] ZHANG W, YAN H, LI H, et al. Removal of dyes from aqueous solutions by straw based adsorbents:Batch and column studies[J]. Chemical Engineering Journal, 2011, 168(3):1120-1127.
[17] WARANUSANTIGUL P, POKETHITIYOOK P, KRUATRACHUE M, et al. Kinetics of basic dye(methylene blue)biosorption by giant duckweed(Spirodelapolyrrhiza)[J]. Environmental Pollution, 2003, 125(3):385-392.
[18] YAMAKI S B, BARROS D S, GARCIA C M, et al. Spectroscopic studies of the intermolecular interactions of congo red and tinopal CBS with modified cellulose fibers[J]. Langmuir, 2005, 21(12):5414-5420.
[19] VADIVELAN V, KUMAR K V. Equilibrium, kinetics, mechanism, and process design for the sorption of methylene blue onto rice husk[J]. Journal of Colloid and Interface Science, 2005, 286(1):90-100.
[20] FRIES W. Cane sugar decolorization by ion exchange resins[J]. International Sugar Journal, 1982,84(1007):325-328.