Adsorption kinetics of phenol and 3-nitrophenol from aqueous solutions on conventional and novel carbons

Cd (II) and Zn (II) biosorption on Lactarius piperatus macrofungus: Equilibrium isotherm and kinetic studies

“…The calculated intraparticle diffusion rate constants and pore diffusion coefficients (assuming a spherical geometry for the adsorbents) are also listed in Table . The pore diffusion coefficients have values in the range of 3.04 × 10 −8 –8.88 × 10 −8 cm 2 /s, which is higher than the rate‐determining range (10 −11 –10 −13 cm 2 /s) . Therefore, it can be concluded that intraparticle diffusion is not the rate‐determining step.…”

“…Besides the initial region (0–10 min), which is usually attributed to bulk diffusion, three regions were identified (Figure a). These regions (three linear plots) are ascribed to boundary layer diffusion (liquid film diffusion), intraparticle diffusion, and the final equilibrium stage . Plots of q t against t 1/2 are linear, ( R 2 ‐values, Table ), but with intercepts ranging between +0.87 and +6.09 (plots do not pass through origin).…”

Modeling the sorption kinetic of metsulfuron-methyl on Andisols and Ultisols volcanic ash-derived soils: Kinetics parameters and solute transport mechanisms

“…Taking into account the scarce or null antecedents into the literature about the kinetic behavior of MSM in soils, especially in volcanic ash-derived soils, and the broad and increasing use of sulfonylurea herbicides in the world's agriculture, this work has been aimed at the application and discussion of two type of kinetic models: those that allow to establish principally kinetic parameters and modeling of sorption process, such as pseudo-first-and pseudosecond-order [18], and some ones frequently used to describe solute transport mechanisms of organic compounds on soils or different sorbents intended for remediation purposes [17,[19][20][21][22]. Such information is necessary for understanding and modeling leaching of target herbicides for preventing potential contamination of water resources.…”

In-situ improved phenol adsorption at ions-enrichment interface of porous adsorbent for simultaneous removal of copper ions and phenol

“…Wastewaters from manufacturing process usually contain multiple pollutants, including toxic organic pollutants phenol or its derivatives [1,2] and heavy metal ions [3,4]. Nowadays, adsorption has been considered as one of the most popular and effective methods for the removal of pollutants from wastewater.…”