Simulation of dye adsorption by beech sawdust as affected by pH

Simulation of methylene blue adsorption by salts-treated beech sawdust in batch and fixed-bed systems

“…The final pH of the solution was found to decrease only slightly (by 0.3-0.5 pH units) after adsorption of methylene blue (in cationic form) with the release of H + ions from the active site of the adsorbent surface. The results were in agreement with other literature reports [11,20].…”

Application of low-cost adsorbents for dye removal – A review

“…Further, in order to know the effect of chemical treatment and to improve its efficiency the authors also tested the potential of the adsorbent by treating it with CaCl 2 (Batzias and Sidiras, 2004) and using mild acid hydrolysis (Batzias and Sidiras, 2007a) and found it to increase the adsorption capacity. Besides this, the simulation studies for effect of pH were also carried out by Batzias and Sidiras (2007b). The authors determined the point of zero charge p.z.c.…”

Adsorption of carmoisine A from wastewater using waste materials—Bottom ash and deoiled soya

“…For a long time activated carbon was considered as an effective adsorbent but the high cost of activated carbon has stimulated interest in examining the feasibility of using cheaper waste materials as potential adsorbents. Thus materials like beech sawdust [6], silkworm pupa [7], waste apricot [8], natural zeolite [9], Leacril fabric [10], pumice powder [11], and agricultural wastes [12] have been utilized for removal of water-soluble toxic dying materials from contaminated water. Recent significant contributions have been made by Wang and co-workers by developing coal ash, fly ash, red mud, etc.…”