Biosorption of Hexavalent Chromium from Aqueous Medium with Opuntia Biomass

Table 1

Kinetic parameters for biosorption of Cr(VI) on Opuntia biomass.

Kinetic model	Opuntia biomass
	Cladodes	Ectodermis
PFORE
𝑞𝑒	17.446	19.893
𝑘1	0.273	0.265
𝑅^2	0,965	0.943
PSORE
𝑞𝑒	16.207	15.015
𝑘2	0.656	0.765
𝑣0	108.696	172.414
𝑅^2	0.970	0.957
Intraparticle diffusion
𝑘𝑑	2.333	2.053
𝑅^2	0.536	0.491

Sorbent dosage: 1.0 g L⁻¹ and Cr(VI) concentration: 10 mg L⁻¹, pH 2.0.