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Surface Modification of Basalt Fiber with Organic/Inorganic Composites for Biofilm Carrier Used in Wastewater Treatment
ACS Sustainable Chemistry & Engineering ( IF 8.4 ) Pub Date : 2018-01-16 00:00:00 , DOI: 10.1021/acssuschemeng.7b04089
Xiaoying Zhang 1 , Xiangtong Zhou 1 , Huicheng Ni 1 , Xinshan Rong 1 , Qian Zhang 1 , Xiang Xiao 1 , Huan Huan 2 , Jun Feng Liu 3 , Zhiren Wu 1
Affiliation  

Support carrier constitutes the technical core of biofilm processes in wastewater treatment. In this study, basalt fiber (BF) was modified by grafting an organic/inorganic composite, attached to which rich microorganisms were supposed to form biofilm for wastewater treatment. The modified BF (MBF) used as biofilm carriers were investigated in terms of hydrophilicity and surface roughness, which determined their bioaffinity. Fourier transforms infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and energy dispersive spectroscopy (EDS) were conducted to study the chemical components. Scanning electron microscopy (SEM) was carried out to observe BF surface morphology. The bioaffinity of BF and MBF was compared in terms of the rate of bacterial adhesion and the ratio of immobilization onto basalt fiber. The bioaffinity of MBF was significantly improved due to introduction of many hydrophilic groups onto BF surfaces, which were subsequently proved to facilitate biofilm formation. The results showed that the adhesion rate, immobilization ratio and biomass of MBF were higher than that of BF. Thus, the polyacrylamide/epoxy/nano-SiO2 coating modification technology holds a promising future for BF application in wastewater treatment.

中文翻译:

有机/无机复合材料对玄武岩纤维表面改性的生物膜载体在废水处理中的应用

支持载体构成废水处理中生物膜工艺的技术核心。在这项研究中,玄武岩纤维(BF)是通过接枝有机/无机复合材料而改性的,在该复合材料上,丰富的微生物被认为可以形成用于废水处理的生物膜。研究了用作生物膜载体的改性BF(MBF)的亲水性和表面粗糙度,从而确定了它们的生物亲和力。进行了傅里叶变换红外光谱(FTIR),X射线光电子能谱(XPS)和能量色散能谱(EDS)来研究化学成分。进行扫描电子显微镜(SEM)以观察高炉表面形态。根据细菌粘附率和固定在玄武岩纤维上的比率比较了BF和MBF的生物亲和力。由于将许多亲水基团引入到BF表面,MBF的生物亲和力得到了显着改善,随后证明了这些亲水基团有助于形成生物膜。结果表明,MBF的附着率,固定化率和生物量均高于BF。因此,聚丙烯酰胺/环氧树脂/纳米SiO2涂料改性技术在高炉废水处理中具有广阔的应用前景。
更新日期:2018-01-16
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