Adsorption of acid dyes in aqueous solutions by shells of bittim (Pistacia khinjuk Stocks)

Adsorption kinetics and mechanism of maxilon blue 5G dye on sepiolite from aqueous solutions

“…We found that the diffusion coefficients in this study changed in the range of 3.625 × 10 −8 to 12.1 × 10 −9 cm 2 /s under various conditions using Eq. (16). For example, as seen from Table 5, the values of diffusion coefficients increased from 4.965 × 10 −8 to 12.100 × 10 −9 cm 2 /s with change in temperature from 15 to 45 • C, respectively.…”

“…The adsorption curves were single, smooth and continuous leading to saturation and indicate the possible mono-layer coverage on the surface of adsorbent by the dye molecules [1]. This was caused by strong attractive forces between the dye molecules and the adsorbent; fast diffusion onto the external surface was followed by fast pore diffusion into the intraparticle matrix to attain rapid equilibrium [16].…”

“…The removal of dyes from industrial wastewaters is currently of great interest. Different adsorbents have been used for removal of dyes [16,17]. This has led many researchers to search for cheaper substitutes such as coal, fly ash, silica gel, wool wastes, agricultural wastes, wood wastes, and clay materials.…”

Batch adsorption of phenol onto physiochemical-activated coconut shell

“…It provides essential physiochemical data for assessing the applicability of the adsorption process as a complete unit operation [34]. Langmuir and Freundlich isotherm models are widely used to investigate the adsorption process [35,36].…”

Artificial neural network (ANN) approach for modeling of Pb(II) adsorption from aqueous solution by Antep pistachio (Pistacia Vera L.) shells

“…Adsorbent dosage is an important parameter because this determines the capacity of an adsorbent for a given initial concentration of the adsorbate [19]. Effect of adsorbent dosage on adsorption was determined by mixing 200 mL of solution containing Pb(II) concentration of 30 ppm with various adsorbent dosages ranging from 0.5 to 4.0 g at an initial pH of 5.5.…”