Ghanim Al – OlawiAsaad Hassoun Saleh, and Dunia Yousif Fanfoon Al-Rammahi. 2018. “Removal Color Study of Azo Dye (4-4/-Antipyriyl Azo 4-Amino Phenol) from Aqueous Solution by Using Photo – Fenton Oxidation”. Al-Qadisiyah Journal of Pure Science 23 (1), 24 - 33. https://doi.org/10.29350/jops.2018.23.1.713.