Comparative Study on the Adsorption Efficiency of Two Different Local Clays for the Cationic Dye; Application for Adsorption of Methylene Blue From Medical Laboratories Wastewater

Single and Binary Adsorption Systems of Rhodamine B and Methylene Blue onto Alkali-Activated Vietnamese Diatomite

“…If Δ H ° < 0 , the adsorption process is exothermic and vice versa. If Δ S ° > 0 , it is possible to infer that the adsorbent affinity for the dye increases, leading to the increase in randomness of the adsorbates at the liquid/solid interface [4, 42]; in contrast, if Δ S ° < 0 , more adsorbate molecules adhere to the adsorbent surface [13, 16, 37].…”

“…For the adsorption process, K e can be determined in a number of ways, depending on the experimental conditions, such as the equilibrium constant K C = )( C 0 − C e / C e [3, 16, 18, 20, 38], the distribution coefficient K d = q e / C e [12–14, 34, 37, 42, 50–52], and the Langmuir constant K L [4–6, 53, 54].…”

“…To remove dyes from complex aqueous solutions, a variety of adsorbents have been used, such as banyan aerial roots [12], peat [2], bentonite [13], mesoporous silica nanoparticles [14], clay [15, 16], activated banana peel carbon [17], silica extracted from rice husk [18], and zeolite [19], and some of them exhibit high performance. However, the search for new, effective, cheap, and environmentally friendly adsorbents is on the way.…”

Enhanced thermal stability and adsorption performance of MIL-53(Fe)@montmorillonite

“…In order to prepare eco-friendly and low-priced adsorbents, the low-cost clay minerals with superior adsorption activity could be used to prepared clay-based adsorbents for removing harmful substances in aqueous solutions, such as dyes, heavy metal ions, and surfactants (He et al, 2012;Aziz1 et al, 2021;Jian et al, 2016). In this study, based on the structural characteristics of Mt and MIL-53(Fe), a novel composite adsorption material [MIL-53(Fe)@Mt] was prepared by a simple one-step solvothermal reaction, which MIL-53(Fe) was grown on the surface of Mt particles in situ.…”