Preparation of α-alumina-supported mesoporous bentonite membranes for reverse osmosis desalination of aqueous solutions

Energy efficient harvesting of Arthrospira sp. using ceramic membranes: analyzing the effect of membrane pore size and incorporation of flocculant as fouling control strategy

“…For homogenization, the prepared slurry was stirred continuously for 2 h at 750 rpm followed by sonication for 15 min. A slip casting coating technique was employed and the duration of coating was 90 s. After coating, the membranes were dried at 50 °C and 50% relative humidity and finally sintered at 500 °C …”

“…For homogenization, the prepared slurry was stirred continuously for 2 h at 750 rpm followed by sonication for 15 min. A slip casting coating technique was employed and the duration of coating was 90 s. After coating, the membranes were dried at 50 ∘ C and 50% relative humidity and finally sintered at 500 ∘ C. 20 The prepared membranes were characterized in terms of the clean water permeability measured in an inhouse designed tangential filtration pilot. Porosity and pore size distribution were determined by BET method [Quantachrome Poremaster, USA].…”

Mechanical properties of single alginate microspheres determined by microcompression and finite element modelling

“…The hydraulic conductivity values used in the modelling were in the range of k = 2.4×10 −10 -1.7×10 −6 m s −1 (Zimmermann et al, 2007;Zhou et al, 2005;White and Deen, 2002;Li et al, 2004) and these were chosen to span the likely range for calcium alginate microspheres. Some values out of this range were also considered to investigate their possible effect.…”

Transport of water and alkali metal ions through MFI zeolite membranes during reverse osmosis

“…The thickness of the double layer decreases as the ion concentration increases [11]. In solutions of low ion concentrations, the charged double layers can overlap in the nano-scale intercrystalline space, which effectively limits the entry and motion of charged ions [12,13]. Therefore, for high quality zeolite membranes, the ion permeation through a very small number of intercrystal pores may be negligible during RO of dilute solutions.…”