Arsenic Removal from Aqueous Solutions by Salvadora persica Stem Ash

Table 2

Pertinent parameters of the adsorption isotherm equations at 23 ± 2°C.

Temperature of ash	The Langmuir isotherm			The Freundlich isotherm
	𝑞𝑚 (𝜇g/g)	𝑘𝐿 (L/𝜇g)	𝑅^2	𝑘𝑓	n	𝑅^2
300°C	4.66	0.12	0.8166	8137.7	0.47	0.8983
500°C	6.77	0.3	0.7651	430.7	0.77	0.9274