Interlayer free _ nickel doped silica membranes for desalination

11th Joint Conference on Chemistry in Conjunction with the 4th Regional Biomaterials Scientific Meeting

材料科学;化学;生物科学

Darmawan, A.^1 ; Karlina, L.^1 ; Astuti, Y.^1 ; Sriatun^1 ; Wang, D.K.^2 ; Motuzas, J.^2 ; Da Costa, J.C.D.^2

Diponegoro University, Department of Chemistry, Semarang

50275, Indonesia^1

University of Queensland, FIM2Lab-Functional Interfacial Materials and Membranes Laboratory, School of Chemical Engineering, Brisbane

QLD

4072, Australia^2

关键词: Feed concentration;    Feed temperature;    Membrane performance;    Salt concentration;    Salt rejections;    Silica material;    Silica membrane;    Structure property relationships;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/172/1/012001/pdf
DOI  :  10.1088/1757-899X/172/1/012001

来源: IOP

【 摘 要 】

This work shows for the first time the potential of nickel oxide silica membranes for desalination applications. Nickel oxide silica xerogels were synthesised via a sol-gel method including TEOS, nickel nitrate with and without addition of hydrogen peroxide. The effects of nickel addition (5% - 50 mol %) on the structure-property relationship of the silica materials were systematically studied. The membrane performance were tested as a function of feed salt concentration (0.3-3.5 wt% NaCl) and temperature (27-60 °C). The membranes which were prepared using equal sol-gel conditions to the xerogel samples showed the raised feed temperatures resulted in increased water fluxes, whilst increasing the salt concentration resulted in decreased water fluxes. The membranes with addition of hydrogen peroxide exhibited better performances than their H2O2absence counterpart. The salt rejection was in excess of 90% and the maximum flux observed was 7.3 kg m-2h-1at 60°C for a 0.3 wt% NaCl feed concentration.