在微波辐射下,以壳聚糖为原料,研究了碱用量、氯乙酸用量、反应温度和微波加热时间四个因素对羧甲基壳聚糖制备的影响.并将其用于对废水中Cu2+的吸附,考察了不同pH,羧甲基壳聚糖的用量,振荡时间及溶液中Cu2初始浓度对吸附性能的影响.结果表明最佳合成羧甲基壳聚糖的工艺条件为1.0g壳聚糖,6.0 mL30％氢氧化钠溶液,1.4g氯乙酸,反应θ为50℃,微波加热t为20 min.当溶液pH为5.45,羧甲基壳聚糖投加量为0.03g,振荡t为1.5h,Cu2+初始质量浓度为300mg/L时,在此条件下羧甲基壳聚糖对Cu2+溶液的吸附量为177.83 mg/g.
参考文献
| [1] | 姚澄宇.我国城市水污染现状剖析与对策初探[J].给水排水,2010(z1):138-143. |
| [2] | 邵利芬,杨玉杰,姚曙光,连庆堂.含铜电镀废水处理技术研究进展[J].工业用水与废水,2007(03):13-15,39. |
| [3] | Shengling Sun;Aiqin Wang .Adsorption properties of carboxymethyl-chitosan and cross-linked carboxymethyl-chitosan resin with Cu(II)as template[J].Separation and Purification Technology,2006(3):197-204. |
| [4] | 贝荣塔,马叶,孙丽菲.铜、锌污染河流与植物污染的研究[J].环境科学导刊,2009(05):37-38,62. |
| [5] | 陈贵英,李维,陈顺德,葛方兰,曾礼华,王琼.环境铜污染影响及修复的研究现状综述[J].绿色科技,2011(12):125-128. |
| [6] | Yu-Ting Zhou;Christopher Branford-White;Hua-Li Nie .Adsorption mechanism of Cu2+ from aqueous solution by chitosan-coated magnetic nanoparticles modified with α-ketoglutaric acid[J].Colloids and Surfaces B-Biointerfaces,2009,74:244-252. |
| [7] | Maria Valentina Dinu;Ecaterina Stela Dragan .Evaluation of Cu~(2+), Co~(2+) and Ni~(2+) ions removal from aqueous solution using a novel chitosan/clinoptilolite composite: Kinetics and isotherms[J].Chemical engineering journal,2010(1):157-163. |
| [8] | 陈伟;林友文;罗红斌 等.羧甲基壳聚糖吸附铜离子性能研究[J].福建环境,2010,17(5):9-11. |
| [9] | 鲁从华,罗传秋,曹维孝.壳聚糖的改性及其应用[J].高分子通报,2001(06):46-53. |
| [10] | Sun UP;Du YM;Shi XW;Chen X;Yang JH;Xu YM .A new approach to chemically modified carboxymethyl chitosan and study of its moisture-absorption and moisture-retention abilities[J].Journal of Applied Polymer Science,2006(2):1303-1309. |
| [11] | 崔毅,杨霞,贤景春,刘迪,孙菲菲.羧甲基壳聚糖的合成和光谱研究[J].光谱实验室,2002(06):850-852. |
| [12] | 聂芊,徐丽萍,赖燕真.羧甲基壳聚糖的制备与性能研究[J].化学与黏合,2008(06):41-44. |
| [13] | 宋庆平,王崇侠,高建纲.N-羧甲基壳聚糖的制备及其对重金属离子吸附研究[J].离子交换与吸附,2010(06):559-564. |
| [14] | 郝红英,徐文国,邵自强.微波法制备羧甲基壳聚糖及其在水处理中的应用[J].高分子材料科学与工程,2006(02):223-226. |
| [15] | 张婷婷,杨爱,李志洲.羧甲基壳聚糖的研究及应用[J].化工技术与开发,2011(09):30-32. |
| [16] | Alka G. Boricha;Z.V.P. Murthy .Preparation of N,O-carboxymethyl chitosan/cellulose acetate blend nanofiltration membrane and testing its performance in treating industrial wastewater[J].Chemical engineering journal,2010(2/3):393-400. |
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