Wastewater Treatment with Chitosan Nano-particles

Chitosan interact with polyphosphate ions to form nanoparticles with different diameters depending on the mutual ratio among them. Three nanoparticles have been prepared and were characterized by spectral and X-ray diffraction tools. TEM analysis revealed there diameters. The nanoparticles were thoroughly studied for wastewater treatment such as the removal of Total Suspended Solid (TSS), Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD) and removal of six heavy metal cations (Cr, Cu, Fe, Mn, Pb, and Zn) from wastewater. These investigations were carried out to minimize the cost and obtain the optimum performance in wastewater treatment. The result showed that the dosage of nanoparticles increases the % efficiency of wastewater treatment, and the smaller the size of the nano chitosan the higher is its activity.