Agricultural wastes as a low cost adsorbents for the removal of Acid Blue 92 dye: A Comparative study with Commercial activated carbon.

Abstract

In the present study, activated carbons of Eichornea crasssipes(EC),

Synthesis and Characterization of Environmentally Friendly β-Cyclodextrin Cross-Linked Cellulose/Poly(vinyl alcohol) Hydrogels for Adsorption of Malathion

“…The Langmuir isotherm equation is commonly utilized for modeling single-layer adsorption on a homogeneous adsorbent surface; once a molecule occupies an adsorption site, no further adsorption can occur at that site. The linear form of the Langmuir isotherm was calculated as follows: , C normale q normale = 1 b q m + C normale q normalm where q e is the equilibrium adsorption capacity (mg g –1 ), C e is the equilibrium concentration of adsorbed malathion solution (mg L –1 ), q m is the maximum adsorption capacity at the saturation of a monolayer (mg g –1 ), and b is the Langmuir constant (L mg –1 ).…”

“…The Freundlich isotherms represent multilayer adsorption on a heterogeneous surface. The linear form of the Freundlich isotherm can be expressed as follows: , log nobreak0em0.25em⁡ q e = log nobreak0em0.25em⁡ K F + 1 n 0.25em log nobreak0em0.25em⁡ C e where K F ((mg g –1 )(L mg –1 ) 1/ n ) and n (dimensionless) are the constants of the Freundlich model.…”

Granular activated carbon optimization for enhanced environmental disaster resilience and malathion removal from agricultural effluent

“…Langmuir adsorption isotherm fitted the experimental data better than that of the Freundlich adsorption isotherm since the value of correlation coefficient (R 2 ) of Langmuir isotherm near to one compared to Freundlich isotherm (Table 3). This implies that a monolayer sorption proceeds over a surface containing a finite number of the adsorption sites [26].…”