Theorithecal and experimental study on the thermodynamic parameters and adsorption of methylene blue on “Argania shells” in industrial waters

Evaluation of Cr (VI) retention in soils of varying carbonate in arid land (Djelfa – Algeria)

“…The Freundlich model is among the models that many researchers most frequently employ in adsorption isotherm modeling (BELAID; KACHA, 2011;FAYOUD et al, 2015;TIMBO et al, 2017;IFGUIS et al, 2022); it is established for heterogeneous surfaces, while Langmuir is established for single-ply adsorption on homogeneous surfaces (ANTONIADIS et al, 2018). We noted that the correlation coefficients are all close to the unit; the highest K-coefficient corresponds to the most important adsorption in our study (Figure 10), soil 3.…”

“…It is noted that other differences in chromium retention rates may be due to the distribution of chromium over several fractions in the soil. As an example, soil 1, which has the highest proportion of clay, has the highest retention without carbonates, knowing that clay minerals have physicochemical characteristics that give them a high adsorption capacity (IFGUIS et al, 2022).…”

Efficacious Removal of Flonicamid Insecticide from Water by GO@functionalized Calix[4]pyrrole: Synergistic Effect in Adsorption

“…Once molecules of pesticide engage with a site, no more adsorption can occur at that specific site. The linear form of Langmuir isotherm is expressed as equation 1: [77] $$$\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr {{1}\over{{{\rm q}}_{{\rm e}}}}={{1}\over{{q}_{max}}}+\left({{1}\over{{K}_{L}{q}_{max}}}\right)\left({{1}\over{{C}_{e}}}\right)\hfill\cr}}$$$ …”

“…[76] Once molecules of pesticide engage with a site, no more adsorption can occur at that specific site. The linear form of Langmuir isotherm is expressed as equation 1: [77] 1…”