Photo-Fenton Oxidation of Batik MakingTextileEffluents

The textile industry produces wastewater effluents that contain a high value of Chemical
Oxygen Demand (COD). These effluents need to be treated before it is being discharged
so that the discharge is safe to the environment. One of the attractive and economical
alternatives is by utilizing Advanced Oxidation Processes (AOP). Photo-Fenton
oxidation is one of those processes. Photo-Fenton oxidation includes an irradiation of an
Ultraviolet light with the utilization of a Fenton's Reagent. In this project, Photo-Fenton
oxidation is used to treat the wastewater sample taken from a Batik-making factory. The
initial parameters of the sample such as the pH and COD values are measured and the
Fenton's Reagent is prepared based on that initial measurement. The COD reading is
measured using the HACH method which is using the DR4000 apparatus. COD is
measured in mg/L. Fenton's Reagent consists of Iron (Fe) and Hydrogen Peroxide
(H2O2). Different ratios of Fe and H2O2 are used to determine which composition ratio
will produce the least value of COD value after a 2-hour experiment. From the results
obtained, the Fenton's Reagent ratio of lpart Fe and 30 parts H2O2 yielded the least
value ofCOD which is 114 mg/L after 60 minutes of the experiment. Thus, the optimum
reaction time is determined to be at 60 minutes.