A comparative study of removal of Ni (II) ion using low cost carbonaceous sorption

摘要

Activated carbon is widely used as an adsorbent in the study of removal of heavy metals by adsorption process. In water treatment process using activated carbon is an expensive one. But there is a need to remove heavy metals from industrial water. The researchers have an attraction by using low cost adsorbent as an alternative to commercially available activated carbon materials. The objective of this study is to contribute in the search for less expensive adsorbents. This current study compares the studies on the removal of Nickel by adsorption on Corn Ash (CA) and Straw Ash (SA). These adsorbents are low cost and non-conventional materials which could be used in water and waste water treatment by adsorption method. The activation process was found to increase the high surface area and offering good adsorption capacity. This is an endeavor to present the data for the design of an economical waste water treatment, plant for effluent discharged from many industries. The experimental parameters which affect the extent of adsorption of heavy metals are reported to be contact time, dose of adsorbent and P~H of solution. The effect of these parameters on extent of removal of Ni (II) ions by adsorption on CA and SA has been studied. The metal removal studies indicated that their removal was strongly affected by the different operating conditions.