EDTA-壳聚糖的制备及其对Cd2+的吸附作用研究
Study on the preparation of EDTA-chitosan and its adsorption on Cd2+
-
摘要: 通过EDTA-2Na对壳聚糖进行酰化改性制备EDTA-壳聚糖,采用单因素试验结合正交试验确定EDTA-壳聚糖的最佳制备条件,并将其与壳聚糖盐酸盐、壳聚糖季铵盐、羟丙基壳聚糖、壳聚糖乳酸盐对Cd2+的吸附性能进行对比.结果表明:1)EDTA-壳聚糖的最佳制备条件为EDTA-2Na与壳聚糖的质量比2:1,pH值5.5,EDAC浓度40 mmol/L,反应时间16 h.在此条件下进行验证试验,得出EDTA-壳聚糖对Cd2+的平均吸附率达53.04%.2)对比试验表明,在同一条件下,EDTA-壳聚糖对Cd2+的吸附效果,均优于其他壳聚糖衍生物.Abstract: EDTA-chitosan was prepared through the acylation modification between EDTA-2Na and chitosan. The preparation conditions of EDTA-chitosan were optimized by single factor test combined with orthogonal optimization test. The comparative analysis of Cd2+ adsorption properties of EDTA-chitosan was made with that of chitosan hydrochloride, chitosan quaternary ammonium salt, hydroxypropyl chitosan and chitosan lactate. The results showed that the optimum preparation conditions of EDTA-chitosan were as follows:the mass ratio of EDTA-2Na and CTS was 2:1, the pH value was 5.5, the concentration of EDAC was 40 mmol/L, and the reaction time was 16 h. The verification experiment under these conditions showed that the average Cd2+ adsorption rate of EDTA-chitosan was 53.04%. Moreover, the comparative experiment revealed that EDTA-chitosan had better Cd2+ adsorption effect than other chitosan derivatives under the same conditions.
-
Key words:
- EDTA-chitosan /
- acylation modification /
- Cd2+ adsorption
-
-
[1]
栗子茜,高彦祥.壳聚糖在果蔬涂膜保鲜的应用[J].中国食品添加剂,2018(1):139.
-
[2]
王海荣,纪宏宇,冯佳玉,等.壳聚糖及其衍生物在药物载体中的应用[J].中国药师,2018(2):324.
-
[3]
孙强,王会才,刘明强.改性壳聚糖对铅离子的吸附研究进展[J].科技通报,2018(2):5.
-
[4]
薛海燕,仇旭东.改性壳聚糖复合微球的制备[J].食品科技,2018(3):232.
-
[5]
LIU Y Q,LIU Y G,XIN-JIANG H U,et al.Adsorption of Cr(Ⅵ) by modified chitosan from heavy-metal polluted water of Xiangjiang River,China[J].Transactions of Nonferrous Metals Society of China,2013,23(10):3095.
-
[6]
危玲,熊燕,魏勇,等.分散液液微萃取-火焰原子吸收光度法测定大米中痕量镉[J].粮食与油脂,2016(2):79.
-
[7]
NIU Y,YING D,LI K,et al.Adsorption of heavy-metal ions from aqueous solution onto chitosan-modified polyethylene terephthalate (PET)[J].Research on Chemical Intermediates,2017,43(7):4213.
-
[8]
贾荣仙,闫芳.新型壳聚糖交联改性物的制备及其性能研究[J].化工新型材料,2018(1):169.
-
[9]
ZHANG L,ZENG Y,CHENG Z.Removal of heavy metal ions using chitosan and modified chitosan:a review[J].Journal of Molecular Liquids,2016(214):175.
-
[10]
郭俊元,陈诚,张萍,等.壳聚糖的改性及其去除废水中染料物质的性能研究[J].环境科学学报,2018,38(4):1529.
-
[11]
GYLIENE O,NIVINSKIENE O,RAZMUTE I.Copper(Ⅱ) -EDTA sorption onto chitosan and its regeneration applying electrolysis[J].Journal of Hazardous Materials,2006,137(3):1430.
-
[12]
REPO E,WARCHOL J K,KURNIAWAN T A,et al.Adsorption of Co(Ⅱ) and Ni(Ⅱ) by EDTA-and/or DTPA-modified chitosan:kinetic and equilibrium modeling[J].Chemical Engineering Journal,2010,161(1/2):73.
-
[13]
任泳,孙明慧,彭红,等.EDTA修饰的壳聚糖磁性吸附剂对当归提取液中的重金属的去除[J].中国中药杂志,2013,38(21):3709.
-
[14]
REPO E,WARCHOL J K,BHATNAGAR A,et al.Heavy metals adsorption by novel EDTA-modified chitosan-silica hybrid materials[J].Journal of Colloid and Interface Science,2011,358(1):261.
-
[15]
TAN Z,PENG H,LIU H,et al.Facile preparation of EDTA-functionalized chitosan magnetic adsorbent for removal of Pb(Ⅱ)[J].Journal of Applied Polymer Science,2015,132(32),1.
-
[16]
张薇,张卓勇,施燕友,等.火焰原子吸收光谱法测定山药中多种微量元素[J].光谱学与光谱分析,2006,26(5):963.
-
[17]
赵娜,金烨纯,李燕玲,等.壳聚糖交联螺旋藻小球对Cr(Ⅵ)的吸附作用研究[J].生态环境学报,2016,25(6):994.
-
[18]
曹小红,刘云海,朱政,等.壳聚糖及其衍生物对铀的吸附研究[J].化学研究与应用,2006,18(7):878.
-
[19]
黄暄暄,马海红,孙畅,等.改性酰化壳聚糖缓释肥包膜材料的制备与表征[J].高分子材料科学与工程,2016,32(6):133.
-
[20]
毛扬帆,辛梅华,李明春.亲水基团性质对双亲性壳聚糖衍生物单分子膜性能的影响[J].化工进展,2015,34(2):490.
-
[21]
李红,高德玉,李锦书,等.壳聚糖降解技术[J].化学工程师,2008,(3):27.
-
[22]
LORETZ B,BERNKOP-SCHNüRCH A.In vitro evaluation of chitosan-edta conjugate polyplexes as a nanoparticulate gene delivery system[J].The AAPS Journal,2006,8(4):756.
-
[1]
计量
- PDF下载量: 24
- 文章访问数: 1476
- 引证文献数: 0