Wang Jing, Huang Tiefan, Zhang Lin, Yu Qiming Jimmy, Hou Li'an
a Key Laboratory of Biomass Chemical Engineering of MOE, College of Chemical and Biological Engineering , Zhejiang University , Hangzhou , People's Republic of China.
b Griffith School of Engineering , Griffith University , Brisbane , Queensland , Australia.
Environ Technol. 2018 Dec;39(23):3055-3065. doi: 10.1080/09593330.2017.1371797. Epub 2017 Sep 8.
A graphene oxide-polydopamine-(β-cyclodextrin) (GPC) ultrafiltration membrane was fabricated by using the method of drop-coating combined with vacuum filtration. The prepared GPC membrane was characterized with FTIR and XPS spectrophotometry and evaluated for its performances for the rejection of organic molecules (methylene blue) and adsorption of trace heavy metals (Pb) from aqueous solutions. The membrane exhibited an excellent rejection coefficient of 99.2% for methylene blue and the permeation flux was 12 L m h at 0.1 bar. The membrane also exhibited fast adsorption kinetics for Pb and the adsorption capacity was 101.6 mg g at a solution pH of 6. The performance of the membrane could almost be completely recovered after a simple clean and regeneration process. These results indicate that the GPC membrane has potential applications in treatment of complex industrial wastewater streams.
采用滴涂法结合真空过滤法制备了氧化石墨烯-聚多巴胺-(β-环糊精)(GPC)超滤膜。用傅里叶变换红外光谱(FTIR)和X射线光电子能谱(XPS)对制备的GPC膜进行了表征，并评价了其对水溶液中有机分子(亚甲基蓝)的截留性能和对痕量重金属(Pb)的吸附性能。该膜对亚甲基蓝的截留系数高达99.2%，在0.1 bar压力下渗透通量为12 L m h。该膜对Pb还表现出快速的吸附动力学，在溶液pH值为6时吸附容量为101.6 mg g。经过简单的清洗和再生过程后，膜的性能几乎可以完全恢复。这些结果表明，GPC膜在处理复杂工业废水方面具有潜在的应用价值。
