Paper Details

Study about efficiency of nitrate removal from water by activated carbon prepared by  pistachio, walnut and almond shells

Mohammad Mehdi Taghizadeh, Reza Vahdati

DOI: https://dx.doi.org/10.12692/ijb/6.2.375-379

Int. J. Biosci. 6(2), 375-379. January, 2015. (PDF)

Abstract:

Materials that are used for preparing activated carbon are very important on adsorption ability of the activated carbon. Chip agricultural waste, same as nut shells successfully can be used for preparing activated carbon .the abject of this research is comparing  characteristics of activated carbon that are prepared by pistachio, walnut and almond shells in removing nitrate from aqueous solutions.  Various samples of activated carbons was prepared by  pistachio, walnut and almond shells .chemical activation was done by zinc chloride  with weighting rate equale150%.the effect of  PH ,Nitrate concentration, reaction time on efficiency of nitrate removal ,also was investigated. The results show the efficiency of nitrate removal for three nut shell consist of pistachio, walnut and almond shells were respectively,45.74%,41.7% and43.49%.most nitrate removal was happened  on PH equal 8 for pistachio and PH equal 2 for walnut and almond shells. As the conclusion, activated carbon prepared by chip agricultural waste such as pistachio, walnut and almond shells have can be used for increasing the water quality. Carbon active that prepared by pistachio shell have better result on nitrate removal comparing to walnut and almond shells.