Evaluation of the Activation Procedure on Oxone Efficiency for Synthetic Olive Mill Wastewater Treatment

Wastewater from the olive oil industry is an environmental problem which growing in Mediterranean region. Presence of phenolic compounds and high organic matter load are characteristics this effluent that make it difficult to treat. In study, applicability sulfate radical based advanced oxidation processes (SRbAOPs), using peroxymonosulfate (PMS) as oxidant, was evaluated treatment synthetic mill wastewater (OMW). Different procedures for PMS activation were studied such by Fe(II), radiation (visible UV-A) ultrasounds. The operation conditions optimized testing pH values, Fe(II) loads. At optimal ([PMS] = 1600 mg/L, [Fe2+] 700 mg/L 5) 60 ± 2% COD removal achieved. This process shows be selective since complete degradation 3,4,5-trimetoxybenzoic acid obtained after 3 min reaction. addition light, PMS/LED/Fe(II) PMS/UV-A/Fe(II), did not increase efficiency removal, with 56 58 1% respectively, comparatively PMS/Fe(II) (60 2%). activated ultrasounds led 52 3% 23 COD, min. Toxicity tests Lepidium sativum showed PMS/UV-A a treated sample mild inhibition plant growth.