聚胍修饰抗菌型海水提铀材料
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

O632

基金项目:

国家自然科学基金


Polyguanidine modified antibacterial adsorbent for uranium extraction from seawater
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    通过聚六亚甲基盐酸胍(PHGC)和偕胺肟基(AO)在戊二醛条件下的交联作用, 制备出一种具有高效抗菌性的新型海水提铀材料(PAM-AO-PHGC). 使用傅里叶转换红外光谱(FT-IR)和扫描电子显微镜(SEM)表征材料表面的官能团和形貌. 通过吸附实验研究了不同吸附条件下(pH、盐离子浓度和吸附时间)的铀吸附性能. PAM-AO-PHGC在模拟海水中的平衡吸附容量达到231.0 mg/g, 吸附过程符合准二级动力学方程. 材料在海水pH(8.0)和高盐离子浓度(0.5 mol/L NaCl)的条件下, 均表现出优异的铀吸附性能. 此外, PAM-AO-PHGC可有效抑制大肠杆菌、金黄色葡萄球菌和海洋中广泛存在的两种弧菌的生长, 聚胍的引入有望解决海水提铀材料在使用过程中的生物污损问题.

    Abstract:

    A new type of adsorbent with efficient antibacterial activity (PAM-AO-PHGC) for uranium extraction from seawater was prepared by crosslinking of polyhexamethylene guanidine hydrochloride (PHGC) and amidoxime group (AO) under the condition of glutaraldehyde. The functional groups and morphology of the material were characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The uranium adsorption performance of PAM-AO-PHGC under different adsorption conditions (pH, salt ionic concentration and adsorption time) was studied by adsorption experiments. The equilibrium adsorption capacity of PAM-AO-PHGC in simulated seawater reaches 231.0 mg/g, and the adsorption process conforms to the pseudo-second-order kinetic equation. Under the conditions of seawater pH (8.0) and high salt ion concentration (0.5 mol/L NaCl), the adsorbent exhibits excellent uranium adsorption efficiency. In addition, PAM-AO-PHGC can effectively inhibit the growth of E. coli, S. aureus, and two types of vibrios which are ubiquitous in the ocean. The introduction of polyguanidine has great potential to solve the biofouling problem in the process of uranium extraction from seawater.

    参考文献
    相似文献
    引证文献
引用本文

引用本文格式: 李昊,文君,汪小琳. 聚胍修饰抗菌型海水提铀材料[J]. 四川大学学报: 自然科学版, 2020, 57: 569.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2020-02-08
  • 最后修改日期:2020-02-27
  • 录用日期:2020-03-09
  • 在线发布日期: 2020-05-22
  • 出版日期:
通知
自2024年3月6日起,《四川大学学报(自然科学版)》官网已迁移至新网站:https://science.scu.edu.cn/,此网站数据不再更新。
关闭