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para-Toluene sulfonic acid treated clay loaded sodium alginate membranes for enhanced pervaporative dehydration of isopropanol
Abstract The para-toluene sulfonic acid (p-TSA) treated clay (5, 10 and 15wt.% loadings) particles were inserted into sodium alginate (NaAlg) matrix to derive the composite membranes that showed enhanced pervaporation performance for isopropanol separation. The 10wt.% modified clay-loaded NaAlg membranes showed the highest selectivity of 5781 with a permeance of 3423GPU for 10wt.% water containing isopropanol feed mixture at 30°C, showing a 140% higher selectivity compared to pristine clay-loaded NaAlg composite membrane. This effect is ascribed to an enhanced surface area and hydrophilicity after p-TSA treatment of clay, as verified by BET and TGA studies. The membranes were characterized by a variety of physico-chemical techniques and their pervaporation performance was assessed in terms of selectivity, permeance, with extent of variations in filler loading, temperature and feed water composition.
Graphical abstract Display Omitted
Highlights p-TSA treated clay loaded NaAlg composite membranes were fabricated. These membranes were used for pervaporation dehydration of isopropanol. The modification has improved both surface area and hydrophilicity of the clay. The modified fillers have shown 140% increase in selectivity.
para-Toluene sulfonic acid treated clay loaded sodium alginate membranes for enhanced pervaporative dehydration of isopropanol
Abstract The para-toluene sulfonic acid (p-TSA) treated clay (5, 10 and 15wt.% loadings) particles were inserted into sodium alginate (NaAlg) matrix to derive the composite membranes that showed enhanced pervaporation performance for isopropanol separation. The 10wt.% modified clay-loaded NaAlg membranes showed the highest selectivity of 5781 with a permeance of 3423GPU for 10wt.% water containing isopropanol feed mixture at 30°C, showing a 140% higher selectivity compared to pristine clay-loaded NaAlg composite membrane. This effect is ascribed to an enhanced surface area and hydrophilicity after p-TSA treatment of clay, as verified by BET and TGA studies. The membranes were characterized by a variety of physico-chemical techniques and their pervaporation performance was assessed in terms of selectivity, permeance, with extent of variations in filler loading, temperature and feed water composition.
Graphical abstract Display Omitted
Highlights p-TSA treated clay loaded NaAlg composite membranes were fabricated. These membranes were used for pervaporation dehydration of isopropanol. The modification has improved both surface area and hydrophilicity of the clay. The modified fillers have shown 140% increase in selectivity.
para-Toluene sulfonic acid treated clay loaded sodium alginate membranes for enhanced pervaporative dehydration of isopropanol
Suhas, D.P. (Autor:in) / Aminabhavi, T.M. (Autor:in) / Raghu, A.V. (Autor:in)
Applied Clay Science ; 101 ; 419-429
20.08.2014
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Blend Membranes of Sodium Alginate/Poly(Styrene Sulfonic Acid) for Isopropanol Dehydration
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