@article{MAKHILLJEAS20138413379, title = {Kinetics and Adsorption Isotherms of Arsenic (V) onto Natural Pozzolan}, journal = {Journal of Engineering and Applied Sciences}, volume = {8}, number = {4}, pages = {97-103}, year = {2013}, issn = {1816-949x}, doi = {jeasci.2013.97.103}, url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2013.97.103}, author = {G.P.,G.J.,S. Ndi and}, keywords = {equilibrium,non-linear,pozzolan,adsorption,Arsenic (V)}, abstract = {Adsorption of arsenic (V) from aqueous solutions onto natural pozzolan from Djoungo was studied. Experiments were carried out in batch as a function of contact time and pH at a frequency of 7 Hz. Results showed that adsorption equilibrium onto pozzolan was attained in 20 min at the pH studied and kinetics followed a pseudo-second-order model. The experimental isotherm data were analyzed using Freundlich, Langmuir and Redlich-Peterson isotherm equations. In order to determine the best-fit isotherm for each system, non-linear regressions were carried out. For this, Chi-square error was used to evaluate the data. The errors values indicated that the Redlich-Peterson isotherm was able to provide best quality fit for all the experimental data.} }