Removal of trihalomethanes in drinking water by using poly-o-phenylenediamine conducting polymer

Reaction between natural organic matter (NOM) and chlorine during disinfecting drinking water form trihalomethanes (THMs) which are possible carcinogen to human health. Hence engineers are required to minimize the concentration of THMs in water either by adsorption or use an alternate disinfectant. The THMs content determination is based on Gas Chromatography- measurements. Poly o-Phenylenediamine (POPDA) was used to remove THMs by adsorption. The removal efficiency of THMs by using different doses of (POPDA) was calculated and also increases by using POPDA/ carbon nanotubes (CNTs) composite. The measured value of THMs in two plants of Beni-Suef governorate namely, American plant 1 and American plant 2 was found to be 64.09 and 43.51 µg/l respectively. The application of (0.32 mg/L) doses of POPDA and POPDA/ (CNTs) composite on sample of American plant 1 for one hour give high removal efficiency reach to 93.64 and 95.58% respectively. The method validation, uncertainty, recovery and linearity of measurement were determined. The adsorption data of THMs on the POPDA and POPDA/CNTs composite was found to fit well with Langmuir and Freundlish isotherm equations.