改性玄武岩纤维的制备及其挂膜性能

徐吉成; 张晓颖; 廖敏; 周向同; 吴智仁

doi:10.13801/j.cnki.fhclxb.20180209.001

改性玄武岩纤维的制备及其挂膜性能

doi: 10.13801/j.cnki.fhclxb.20180209.001

1.
镇江市高等专科学校国际教育学院, 镇江 212028;
2.
江苏大学环境与安全工程学院, 镇江 212013

基金项目: 国家重点研发计划政府间国际科技创新合作重点专项（2016YFE0126400）；中国博士后科学基金（2016M600377）；江苏省博士后科研基金（1701057B）；江苏省第五期“333高层次人才培养工程”（BRA2016142）

详细信息

通讯作者:
吴智仁,博士,研究员,博士生导师,研究方向为环境净化材料的研发及应用,E-mail:wuzhiren@ujs.edu.cn

中图分类号: TQ343
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- 被引次数: 0
出版历程
- 收稿日期: 2017-12-11
- 修回日期: 2018-01-19

Preparation of modified basalt fibers and its immobilization effect

1.
School of International Education, Zhenjiang College, Zhenjiang 212028, China;
2.
School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China

摘要

摘要: 以不同表面活性剂作为分散剂，采用物理涂覆法对玄武岩纤维（BF）进行表面改性处理，得到3种改性玄武岩纤维（MBF）。以FTIR、光学接触角分析仪和SEM分别研究了BF和MBF的表面官能团、亲水性和微观形貌的变化。计算了载体的挂膜率和残余挂膜率，以光学显微镜和扫描电子显微镜观察了BF和MBF的生物膜生长情况，讨论了不同表面处理对BF挂膜性能的影响。结果表明：经表面改性处理后，MBF的表面亲水性和水中分散性得到有效改善，其中经阳离子型表面活性剂（十六烷基三甲基氯化铵，CTAC）改性的玄武岩纤维（MBF-C）具有最佳亲水性和水中分散效果，接触角由133.57°（BF）下降至62.52°（MBF-C）。挂膜实验结果表明，3种表面活性剂对BF的表面改性处理均有助于增加微生物的附着量和提升附着强度，其中改性后的MBF-C挂膜率为256.25%，残余挂膜率为41.28%，具有最优的挂膜效果。
- 玄武岩纤维 /
- 表面活性剂 /
- 亲水性 /
- 分散性 /
- 微生物附着
Abstract: Basalt fibers (BF) were modified by physical coating method with three different surfactants. The surface functional groups, hydrophilicity and micro-morphology of raw BF and as-prepared modified basalt fibers (MBF) were characterized by FTIR spectra, optical contact angle analysis and SEM, respectively.Furthermore, the immobilization rate and residual immobilization rate of BF and MBF samples were calculated and biofilm development of BF and MBF were observed by optical microscope and SEM to assess the effects on the immobilization effect of MBF. The results show that the hydrophilicity and dispersion of MBF are efficiently improved in water. Among the modified basalt fibers, the modified basalt fiber modified with hexadecyl trimethyl ammonium chloride (CTAC) (MBF-C) has optimal hydrophilicity and dispersion. The contact angle decreases from 133.57° (BF) to 62.52° (MBF-C). The microorganism immobilization test results illustrate that all three modifications are conductive to increase the microorganism loading and adhesion strength of BF. In addition, the MBF-C possesses an optimal immobilization effect that the immobilization rate and residual immobilization rate reach up to 256.25% and 41.28%, respectively.
- basalt fiber /
- surfactant /
- hydrophilicity /
- dispersion /
- microorganism immobilization