静电纺PET纳米纤维填料对酸性金黄G的过滤研究

Research on the removal of acid golden yellow G by electrospun polyethylene terephthalate naofibers

利用静电纺丝技术制备了PET纳米纤维填料,絮凝-纳米纤维填料法处理染料废水中的酸性金黄G。研究了絮凝剂浓度、絮凝沉降时间、纳米纤维的结构等因素对酸性金黄G去除率的影响。采用扫描电镜(SEM)、紫外光谱仪(UV-vis)、红外光谱仪(FT-IR)进行检测及表征。实验结果表明,不加絮凝剂预处理,过滤75min后纳米纤维填料对酸性金黄G的去除率下降至47.5%。采用絮凝-纳米纤维填料法处理染料废水,去除率最大可达100%。而絮凝剂浓度为10mg/L时,过滤75min后去除率下降至87.5%;絮凝剂浓度700mg/L时,过滤75min后去除率仍可达到100%。

A method of treating acid golden yellow G was applied with flocculation-nanofiller by separation.The effects of flocculants concentration,flocculent time and nanofibers on the removal rate of acid golden yellow G were studied.SEM,ultra voilet spectroscopy and FT-IR were used to characterize the morphologies of nanofibers and wastewater.It was observed that the maximum removal of 96.77% was obtained after direct filtration of dye wastewater,The removal of 100% can be observed when the wastewater was per-treated by separation of flocculation-nanofiller.And when flocculants concentration was 700mg/L,removal rate can still maintain 100% after 75 minutes,but 87.5% of removal rate when 10mg/L.