Activated charcoal-loaded composite membranes of sodium alginate in pervaporation separation of water-organic azeotropes

2009 ◽  
Vol 113 (2) ◽  
pp. 966-975 ◽  
Author(s):  
T. M. Aminabhavi ◽  
M. B. Patil ◽  
S. D. Bhat ◽  
A. B. Halgeri ◽  
R. P. Vijayalakshmi ◽  
...  
Keyword(s):  
Sodium Alginate ◽  
Activated Charcoal ◽  
Composite Membranes ◽  
Pervaporation Separation

Preparation of novel composite membranes for the pervaporation separation of water–acetic acid mixtures

2006 ◽  
Vol 285 (1-2) ◽  
pp. 420-431 ◽  
Author(s):  
Srikant S. Kulkarni ◽  
Subhashchandra M. Tambe ◽  
Arjumand A. Kittur ◽  
Mahadevappa Y. Kariduraganavar
Keyword(s):  
Acetic Acid ◽  
Composite Membranes ◽  
Pervaporation Separation

Cr(III) ionic imprinted polyvinyl alcohol/sodium alginate (PVA/SA) porous composite membranes for selective adsorption of Cr(III) ions

2010 ◽  
Vol 165 (2) ◽  
pp. 465-473 ◽  
Author(s):  
Jian Hua Chen ◽  
Guo Ping Li ◽  
Qing Lin Liu ◽  
Jian Cong Ni ◽  
Wen Bing Wu ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Sodium Alginate ◽  
Selective Adsorption ◽  
Composite Membranes ◽  
Porous Composite

scholarly journals EVALUATION OF BACTERIAL CELLULOSE-SODIUM ALGINATE FORWARD OSMOSIS MEMBRANE FOR WATER RECOVERY

2018 ◽  
Vol 80 (3-2) ◽  
Author(s):  
Ngan T. B. Dang ◽  
Liza B. Patacsil ◽  
Aileen H. Orbecido ◽  
Ramon Christian P. Eusebio ◽  
Arnel B. Beltran
Keyword(s):  
Contact Angle ◽  
Bacterial Cellulose ◽  
Sodium Alginate ◽  
Water Flux ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Membrane Thickness ◽  
Water Recovery ◽  
Sem Images ◽  
Salt Rejection

Water resources are very important to sustain life. However, these resources have been subjected to stress due to population growth, economic and industrial growth, pollution and climate change. With these, the recovery of water from sources such as wastewater, dirty water, floodwater and seawater is a sustainable alternative. The potential of recovering water from these sources could be done by utilizing forward osmosis, a membrane process that exploits the natural osmotic pressure gradient between solutions which requires low energy operation. This study evaluated the potential of forward osmosis (FO) composite membranes fabricated from bacterial cellulose (BC) and modified with sodium alginate. The membranes were evaluated for water flux and salt rejection. The effect of alginate concentrations and impregnation temperatures were evaluated using 0.6 M sodium chloride solution as feed and 2 M glucose solution as the draw solution. The membranes were characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and Contact Angle Meter (CAM). The use of sodium alginate in BC membrane showed a thicker membrane (38.3 μm to 67.6 μm), denser structure (shown in the SEM images), and more hydrophilic (contact angle ranges from 28.39° to 32.97°) compared to the pristine BC membrane (thickness = 12.8 μm and contact angle = 66.13°). Furthermore, the alginate modification lowered the water flux of the BC membrane from 9.283 L/m2-h (LMH) to value ranging from 2.314 to 4.797 LMH but the improvement in salt rejection was prominent (up to 98.57%).

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