Chemodynamics of Methyl Parathion and Ethyl Parathion: Adsorption Models for Sustainable Agriculture

Table 2

Adsorption models along with their parameters.

Isotherms	Linear expression	Plot	Parameters
Langmuir (1918)	𝐶𝑒𝑞𝑒=1𝑞𝑚𝐾𝐿+𝐶𝑒𝑞𝑚	𝐶𝑒𝑞𝑒 v  𝐶𝑒	𝑞𝑚=1slope
			𝐾𝐿=slopeintercept
Freundlich (1906)	log𝑞𝑒=log𝐾𝐹+1𝑛log𝐶𝑒	log𝑞𝑒 v log𝐶𝑒	1𝑛=slope
			𝐾𝐹 = Antilog (intercept)
Pseudo-first-order	log𝑞𝑒−𝑞𝑡=log𝑞𝑒−𝑘1𝑡2.303	log𝑞𝑒−𝑞𝑡 v 𝑡	𝑘1 = slope
			𝑞𝑒 = Antilog (intercept)
Pseudo-second-order	𝑡𝑞𝑡=1𝑘2𝑞^2𝑒+1𝑞𝑒𝑡	𝑡𝑞𝑡 v 𝑡	𝑞𝑒 = slope
			ℎ = intercept
			𝑘2=interceptslope^2
Intraparticle diffusion	𝑞𝑡=𝑘ip𝑡^0.5+𝐶	𝑞𝑡 v 𝑡	𝑘ip = slope
			𝐶 = intercept