改性玄武岩纤维制备及其在微生物载体的应用

The Preparation of Modified Basalt Fiber and its Utilization on Microorganism Carrier Media

为提高玄武岩纤维(BF)作为微生物载体的生物亲和性,采用酸碱刻蚀法获得改性玄武岩纤维(MBF),以达到提高BF表面粗糙度的目的。通过扫描电子显微镜观察BF刻蚀前后微观形貌的变化,以大肠埃希菌的生长曲线评估MBF的生理毒性,并采用光学显微镜观察改性前后BF表面微生物的生长情况。结果表明:与BF相比,MBF表面较为粗糙,表面粗糙度和比表面积均有所增加。MBF固定的微生物量明显增加,说明表面粗糙度的增加有利于提高BF的生物亲和性,提高其作为微生物载体时的污/废水处理效能。

To improve the bio-affinity of basalt fiber(BF) as microorganism carrier media, the modified basalt fiber was prepared by acidmorphologies of BF and MBF were characterized by scanning electron microscope, and the growth curves of Escherichia coli were investigated to evaluate the toxicity of BF and MBF, while the growth of microorganism adhered on MBF surface was observed by optical microscope. The results show that MBF becomes roughness by comparison with BF, and both the surface roughness and surface area increase. The biomass immobilized on MBF has been significantly improved, indicating that the increase of surface roughness is benefit to the improvement of bio-affinity and the wastewater treatment efficiency.