Kinetics, Equilibrium and Thermodinamic Investigation of New Coccine Adsorption onto Chitosan 10B in Aqueous Solution

Removal of Pb2+ from Wastewater By γ‐Fe2O3@SHFA Based on Alkali‐Modified Fly Ash: Performance and Mechanism

“…The coagulation kinetics of Pb 2+ removal by γ‐Fe 2 O 3 @SHFA was fitted and analyzed by the pseudo‐first‐order (Equation ()) and pseudo‐second‐order kinetic equations (Equation ()) [ 31,32 ] $$\[ \begin{array}{*{20}{c}}{{Q_t} = {Q_{\rm{e}}}\left( {1 - {{\rm{e}}^{ - {k_1}t}}} \right)}\end{array} \]$$ $$\[ \begin{array}{*{20}{c}}{{Q_t} = \frac{{Q_{\rm{e}}^2{k_2}t}}{{1 + {Q_{\rm{e}}}{k_2}t}}}\end{array} \]$$where Q e (mg g −1 ) is the Pb 2+ removed capacity at equilibrium; and k 1 (min −1 ) and k 2 (g mg −1 min −1 ) are the pseudo‐first‐order and pseudo‐second‐order rate constants, respectively.…”

“…The coagulation kinetics of Pb 2+ removal by γ-Fe 2 O 3 @SHFA was fitted and analyzed by the pseudo-first-order (Equation ( 3)) and pseudo-second-order kinetic equations (Equation ( 4)) [31,32] ( )…”