With the rapid growth and increasing of industries, various kind of heavy metals like arsenic have been released to ground water and surface waters. Removing heavy metals from contaminated water is critical to secure the drinking water. Chitosan as a natural biopolymer has attracted enormous attention due to its non-toxicity, degradability and large value of functional group called amine. Chitosan/graphene oxide (CS/GO) composite was used to incorporate in polycarbonate (PC) membrane to arsenic removal from water. The influence of different content of CS/GO composite on the structural properties and As removal efficiency of the membranes were explored. The results indicate that the porosity and mechanical properties of the membranes are enhanced with the increase of CS/GO concentration. Neat PC membrane has a porosity of 78 %, that increases to 88 % with addition of 1.5 wt.% CS/GO composite.As rejection improved in all the composite membranes. As rejection properties of the modified membranes improved in presence of HA molecules due to the size exclusion of pores by HA fouling and electrostatic attraction effects.
