出版社：Polish Society of Ecological Engineering (PTIE)
摘要：This paper presents the results of research on the production of composite polyacrylonitrile (PAN) membranes with nanotubes (MWCNT), graphene (RG) and graphene oxide (GO) addition.All of the specified additions differ diametrically in terms of properties, starting from the spatial structure of the particles, up to the chemical properties.Membranes were obtained using phase inversion method from a solution of N,N-dimethylformamide (DMF).Subsequently, the impact of the nano-addition on the transport and separation properties of the membranes were investigated using Millipore AMICON ultrafiltration kit.Membranes with graphene addition (PAN/RG) are characterized by the best transport properties and the highest specific permeate flux values in the range of ~913÷1006 [dm3/m2×h] for working pressure of 2.0 MPa.To test the separation properties, electroplating waste water generated in one of the Silesian galvanizing plants was used.The qualitative and quantitative composition of the waste water was tested by UV-Vis spectrophotometer (HACH) and absorption atomic spectrometry (AAS).The ultrafiltration process carried out on composite membranes allows for the complete removal of phosphate ions and ~88÷94% of iron from the waste water.The rejection coefficient of the remaining metals is high: ~ 35 ÷ 85% for copper and ~ 17 ÷ 100% for cadmium.
