Co3O4/GO catalyst as efficient heterogeneous catalyst for degradation of wastewater containing polyacrylamide(PAM)

Abstract

Aiming at the produced waster containing polyacrylamide(PAM), the heterogeneous Co₃O₄-GO/PMS system was selected to degrade PAM in this paper. The characteristic of Co₃O₄/GO are studied. The degradation experiment shows that Co₃O₄/GO was successfully prepared and exhibited satisfactory degradation efficiency. The removal efficiency can exceed 99.7% within 90 ​min. Furthermore，the degradation effect of PAM was better in acidic and neutral solutions. Based on the quenching experiments, SO₄-• and •OH are the main active radicals in Co₃O₄-GO/PMS system. PMS is activated by mental ion and generated SO₄-• to remove PAM. After 5 runs of reuse, PAM degradation efficiency still exceeded 95.7%.