The effect of surface roughness on fluid-to-particle mass transfer in a packed adsorber bed

Kinetics, equilibrium and thermodynamic studies on biosorption of Ag(I) from aqueous solution by macrofungus Pleurotus platypus

“…The four parameter isotherm Weber-van Vliet showed slightly less fit compared to Fritz-Schlunder having the correlation coefficient value (0.982) and an APE of 6.5% at 20 • C. Results indicated that the surface roughness of P. platypus had a profound effect on Ag(I) biosorption as film diffusion took place by directly enhancing film mass transfer coefficients [81].…”

“…The isotherm was found to be slightly better than Weber-van Vliet on the basis of correlation coefficient value and average percent error ( Table 4). The parameters calculated A, B and a value of A/B was indicative of the sorbate sorbent interaction strength [81]. The strength was maximum at 20 • C as the value A/B (23.49) followed by the value A/B (11.01) at 30 • C and the least value of A/B (2.12) at 40 • C (not shown in table).…”

The Effect of Ionic Migration and Diffusion on the Roughness Development of Growing Electrodeposits. The Use of Fractals to Compare Theory With Experimental Results

“…Several other methods for determining the fractal dimension of boundary outlines exist since the scaling properties of fractal structures may be exploited to devise a variety of techniques for determining the Downloaded by [University of Cincinnati Libraries] at 23: 18 20 November 2014 fractal dimension of different structures [14][15][16][17][18][19][20][21]. Fractals have been used to describe a variety of phenomena in physics and chemistry [22][23][24][25][26], whilst in chemical engineering, they have been used to quantify the surface roughness of particles, how this changes during attrition, as well as its effects on mass and momentum transfer [8,[27][28][29][30]. Fractals are thus evolving from a mathematical curiosity to a useful modelling tool that is finding applications in a variety of fields.…”

BSA adsorption onto magnetic polyvinylbutyral microbeads

“…For both type of microbeads, k was smaller than k denoting fast adsorption step. While surface roughness for magnetic microbeads as seen in Figure 3(a) was being an advantage for more binding sites on increased surface area, the same property caused larger liquid film thickness,30, 31 which might have been the reason for low overall forward reaction rate, k , due to increased mass transfer resistance. Boyer and Hsu investigated the adsorption kinetics for albumin (MW 67000) onto Cibacron Blue attached Sepharose gels using the same kinetic approach 10.…”