Arsenic Removal Using Multiwall Carbon Nanotube

Abstract

Arsenic contamination for drinking water is still a great health hazardous issue for both developed and developing countries. Numerous techniques have been implemented for removing arsenic from drinking water. However, more emphasis has been given on the removal technique related to carbon nanotube absorbent. This study was aimed to investigate the adsorption as well as removal of arsenic using multiwall carbon nanotube as adsorbent or removing material. Arsenic contaminated water was treated in two ways: 1) Batch adsorption and 2) Column feeding system. Removal of arsenic in column technique was found better for each sample. Independent variables including carbon nanotubes dosage, contact time etc. were varied to determine the influence of these parameters on the removal capability of the arsenic from water. From this investigation it was evident that multiwall carbon nanotubes has the capability of adsorption or removal of arsenic. Moreover, it is possible to get water under safe limit using certain amount of nano materials and up to a certain level of contaminated water.