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生物质化学工程 ›› 2016, Vol. 50 ›› Issue (6): 37-42.doi: 10.3969/j.issn.1673-5854.2016.06.006

• 研究报告 • 上一篇    下一篇

废弃虾壳制备改性甲壳素凝胶球及其对金属离子的吸附性能

钱建瑛1, 丁振中2, 杨涛1, 李恒1, 史劲松1   

  1. 1. 江南大学 药学院, 江苏 无锡 214122;
    2. 扬州日兴生物科技股份有限公司, 江苏 扬州 225601
  • 收稿日期:2016-06-15 出版日期:2016-11-30 发布日期:2016-12-03
  • 作者简介:钱建瑛(1982-),女,江苏无锡人,实验师,硕士,研究方向为生物制药;E-mail:jackieqian@163.com
  • 基金资助:
    江苏省重大成果转化项目(BA2015006)

Preparation of Modified Chitin Gel Bead from Waste Shrimp Shell and Its Adsorption Properties for Metal Ions

QIAN Jian-ying1, DING Zhen-zhong2, YANG Tao1, LI Heng1, SHI Jing-song1   

  1. 1. School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, China;
    2. Yangzhou Rixing Bio-Tech CO., LTD., Yangzhou 225601, China
  • Received:2016-06-15 Online:2016-11-30 Published:2016-12-03

摘要: 以虾壳酶解残渣为原料,经5%盐酸脱钙处理4 h后,用45%氢氧化钠和460 W微波辅助脱乙酰处理10 min,得到脱乙酰度为40.4%的改性甲壳素。将改性甲壳素加入海藻酸钠水溶液中混合均匀,挤压滴入氯化钙水溶液中固化12 h,制备得到直径为1.5~3.2 mm的凝胶小球,研究了该凝胶球对Pb2+、Cr3+、Ni2+、Cu2+、Co2+和Zn2+的吸附效果。结果表明:凝胶球对Cu2+、Co2+和Zn2+的吸附效果最好,300 mg/L重金属离子溶液吸附处理8 h是较适宜的吸附条件,此条件下,Cu2+、Co2+和Zn2+的吸附率分别达到94.2%、75.6%和57.3%。在Cu2+-Co2+-Zn2+共存溶液体系中,凝胶球对3种离子的吸附率均有所提高,Cu2+、Co2+和Zn2+的吸附率分别为95.1%、82.5%和67.5%。

关键词: 改性甲壳素, 金属离子, 吸附性能

Abstract: Modified chitin with 40.4% deacetylation degree was obtained from enzymatic hydrolysis residue of shrimp shell,which was treated by 5% HCl for 4 h and 45% NaOH coupled with 460 W microwave for 10 min,and then prepared into gel beads with diameter of 1.5-3.2 mm by adding sodium alginate,mixing evenly,and squeezing in calcium chloride solution for 12 h.The adsorption performances of the gel beads to metal ions (Pb2+,Cr3+,Ni2+,Cu2+,Zn2+ and Co2+) were investigated.The adsorption rates of Cu2+, Co2+ and Zn2+ were found to be 94.2%,75.6% and 57.3% in 300 mg/L ion solutions by treating for 8 h,and 95.1%, 82.5%, 67.5% in the Cu2+, Zn2+ and Co2+ coexisting system,respectively.

Key words: modified chitin, metal ion, adsorption property

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