Investigate the possibility of using (ethylene terephthalate) Grafted – 2- Hydroxy Propyl Methacrylate in wastewater treatment to control the contamination of lead and cadmium in the aquatic environment

Abstract

Today, freshwater ecosystems polluted by heavy metals such as cadmium(cd2+) and lead(Pb2+) in Iran and other countries is an important environmental problem. Discharge of sewage and waste water into surface waters is one of the most important sources of heavy metals pollutions. Surface adsorption of heavy metals by polymer from waste water is one of the most recommended methods for water resource filtration. Poly (ethylene terephthalate) – Grafted – 2- Hydroxy Propyl Methacrylate was used as surface adsorbent in this study. The properties of produced adsorbent were studied. The results were showed that the contact between 1M NaOH and sorbent was not significant change in sorption properties. The adsorbent were used for filtration of Cd2+ and Pb2+
ions from pure laboratory solution and Isfahan steel factory wastewater. The results were showed that the maximum adsorption capacity for Cd2+ and Pb2+ were 23.44 and 20.9 mg/g respectively. The comparison of filtration Cd2+ and Pb2+ from pure laboratory solution and Isfahan steel factory wastewater were showed that the amount of Cd2+ filtration from both solutions were equal. The
removal of Pb2+ from Isfahan steel factory wastewater was equal 54% of adsorption amounts from pure laboratory solution. The results proved that the produced adsorbent was useful for removal of cd2+ and Pb2+ from wastewater.