Investigation on adsorption performance of mesoporous activated biomass prepared from <i>Cocos nucifera</i> husk for harzadous cyanide wastewater treatment

Abstract

The influence of various factors namely pH, absorbent dosage; contact time and initial ion concentration was studied to identify the adsorption capacity of the adsorbent. The optimum pH was obtained at pH =3 for all the adsorbent. Other physiochemical parameters, ranging from the surface area to the scanning electron microscope (SEM) were studied and indicate that the cocos nucifera husk is a good precursor for investigation on activated biomass for hardzadous cyanide wastewater. Adsorption data were modeled using Langmuir, Freundlich, Temkin, Henry and T. D. Yavini et al. J Fundam Appl Sci. 2017, 9(1), 354-377 355Equibrium data were best described by Henry model. Kinetic models were also carried out including pseudo first order with R 2 = 0.969, Pseudo-second order R 2 = 0.998, Intra-particle diffusion R 2 = 0.909, and Elovich Kinetic model with R 2 of 0.814, the kinetic data were best described and seen by Pseudo second order model. It is then proven that the study of the entire adsorbent are most efficient for the removal of cyanide from waste waters and it can be used as low-cost adsorbent for the removal of cyanide ions from wastewater.