title: Heterogeneous photocatalysis of real textile wastewater: evaluation of reaction kinetics and characterization.
abstract: Real textile wastewater collected from the cotton dyeing bath of a fabric dyeing and finishing plant was subjected to heterogeneous photocatalysis using Ag(+) doped TiO(2) under UV irradiation in a batch reactor. The photocatalysts were characterized by FESEM, XRD, EDS, FTIR, DRS and BET analyses. The kinetics of the reaction was also evaluated. Colour removal was more than 88%, 94% and 99%, respectively for undiluted, 2 times diluted and 5 times diluted wastewater with Ag(+) doped TiO(2) (2.5 g/L) after UV irradiation for 360 minutes. The COD removal for undiluted, 2 times diluted and 5 times diluted wastewater was 47%, 70% and 92%, respectively under similar conditions. The reaction followed Langmuir-Hinshelwood pseudo first order kinetic model and the data fitted well to polynomial regression analysis.
authors.affiliation: Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology, Kharagpur, India.
authors.forename: Chittaranjan
authors.initials: C
authors.lastname: Sahoo
authors.forename: Ashok K
authors.initials: AK
authors.lastname: Gupta
authors.forename: Indu M Sasidharan
authors.initials: IM
authors.lastname: Pillai
mesh_terms: D007700:Kinetics; D010777:Photochemistry / Q000379:methods*; D013783:Textile Industry; D014466:Ultraviolet Rays; D062065:Wastewater / Q000737:chemistry*
chemical_list: D062065:Wastewater