The effect of poly ethylene glycol additive on the characteristics and performance of cellulose acetate ultrafiltration membrane for removal of Cr(III) from aqueous solution

7th AIC‐ICMR on Sciences and Engineering 2017

自然科学;工业技术

Mulyati, S.^1 ; Aprilia, S.^1 ; Safiah^2 ; Syawaliah^3 ; Armando, M.A.^1 ; Mawardi, H.^1

Syiah Kuala University, Banda Aceh

23111, Indonesia^1

Graduate School of Engineering Science, Syiah Kuala University, Banda Aceh

23111, Indonesia^2

Doctoral School of Engineering Science, Syiah Kuala University, Banda Aceh

23111, Indonesia^3

关键词: Additive concentrations;    Cellulose acetates;    Functional group analysis;    Membrane morphology;    Membrane performance;    Molecular weight cutoff;    Pore-forming agents;    Ultra-filtration membranes;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/352/1/012051/pdf
DOI  :  10.1088/1757-899X/352/1/012051

来源: IOP

【 摘 要 】

The effect of polyethylene glycol (PEG) additive on the characteristics and performance of the cellulose acetate ultrafiltration membrane to chromium metal removal has been studied using some variation of concentration in the casting solution. The concentration of cellulose acetate polymer was 17.5%, whereas the variations of PEG concentration were regulated at 0, 2.5, 5, 7.5 and 10% by weight. Dimethyl formamide (DMF) was used as a solvent. Pure water flux, membrane morphology test, functional group analysis, and molecular weight cut off (MWCO) were investigated to characterize of the prepared membranes. Membrane performance was tested against Cr(III) metal removal. The results confirmed that the pure water flux improved with the increasing of additive concentration. The maximum improvement occurred at membrane with modification using 7.5% PEG. At this PEG concentration, the pure water flux elevated from 49.5 L/m2.h to 62.2 L/m2.h. The addition of PEG successfully improved the membrane flux because the role PEG plays as a pore-forming agent. Membrane with addition of 7.5% PEG showcased rejection result for chromium metal of 31.89%. This value is lower than that of pure CA membrane which rejection value against Cr(III) metal amounted to 35.72%.