Research Article
Saber Ibrahim, Ibrahim Abdelfa
Abstract
We performed an environmental method to recycle compact discs using tannery industrial wastewater effluent. This study includes thermogravimetric analysis (TGA), mechanical properties and wastewater characterization before and after treatment. The final recycled compact disc was completely free of ink, and its mechanical properties were slightly enhanced after ink removal. The crystallization behavior of the compact disc remains the same after the deinking process. After the de-inking procedure, the study was continued to the treatment of tannery effluent by conventional coagulation-flocculation followed by Fenton’s treatment process. The coagulation-precipitation process removed 42%, 77%, 86%, 99%, 84%, 85% and 98% of BOD, COD, TSS, H2S, TKN, P and (O&G), respectively. Unfortunately, due to its solubility in water, the coagulation process did not affect the concentration of phenols. Therefore, Fenton’s oxidation process was able to remove 100% of phenols, hydrogen sulfide and phosphorus. The removal of BOD, COD, TSS, TKN, and (O&G) were 84%, 92%, 91%, 80% and 90%, respectively