Adsorption of Crystal Violet onto Adsorbents Derived from Agricultural Wastes: Kinetic and Equilibrium Studies

Journal of Applied Sciences and Environmental Management

AKINOLA, L.K.¹  UMAR, A.M.¹ 

关键词: Adsorption;    Bean pod;    Crystal violet;    Equilibrium;    Groundnut shell;    Kinetics;   

DOI  :  

学科分类：环境科学（综合）

来源: University of Port Harcourt * Department of Pure and Industrial Chemistry

【 摘 要 】

Suitability of adsorbents derived from groundnut shell (GS) and bean pod (BP)in removing crystal violet from aqueous solution was evaluated in a series of batchexperiments. Findings reveal that the points of zero charge (PZC) of GS and BP are 3.50 and3.00 respectively. Findings also show that GS and BP exhibit maxima adsorption at pH valuesof 6.00 and 5.00 respectively. For both GS and BP, pseudo-second order model gives the bestfit for the sorption kinetic data while Freundlich isotherm gives the best fit for the sorptionequilibrium data. These findings suggest that the adsorption of crystal violent onto GS and BPprobably involves chemisorption and the adsorption does not reach a plateau as theconcentration of crystal violet in the aqueous solution increases. This study demonstrates thesuitability of GS and BP as low-cost adsorbents for removing crystal violet from industrialwastewater.

【 授权许可】

Unknown