| Summary: | The tannery industry produces liquid wastewater containing high organic and inorganic pollutants. This study aims to determine the effect of Fenton reagent as a bioremediation agent in tannery wastewater treatment. The material used in this study was tannery wastewater from the local leather industry in Bantul, Yogyakarta. This study was arranged in a Completely Randomized Design with triplicates for each treatment, and the result was analyzed using ANOVA and Duncan Multiple range test for the significant difference. The treatment consisted of 4 different concentrations of the Fenton reagent addition P0 (0), P1 (0.2), P2 (0.4), and P3 (0.6). The BOD, COD, TS, total chrome (Cr), and chrome hexavalent (Cr (VI)) content were observed in this research. This study showed that Fenton reagent's addition at different concentrations had no significant effect (P>0.05) on the BOD content. However, it has a significant effect (P<0.05) on increasing the value of TS, TSS. However, it decreased the value of COD, Total Cr, and Cr (VI). The addition of 0.6 in P3 had the highest effect by reducing 66.7 COD, 11.8 of total chrome (Cr), and 11.5 of Cr (VI). It could be concluded that the addition of the Fenton reagent until 0.6 of this study has not been able to meet the standard quality standard for tannery wastewater. However, it was able to reduce inorganic pollutants, especially in Cr (VI). Combining several methods in bioremediation with the Fenton reagent may important for further study on tannery wastewater treatment. © 2021 Institute of Physics Publishing. All rights reserved.
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