study and compression of ferric chloride and acid cracking pretreatments in yield increasing of olive mill wastewater photocatalysis treatment

in this work, ferric coagulation and acid cracking as olive mill wastewater (omw) pretreatments during photocatalysis process were compared in batch recirculation reactor. as ferric ions influence, ferric coagulation has preference over acid cracking. ferric ions influence on intensification of penolic components absorption on tio2 surfacein initial and oxidize organic pollutant during photocatalysis treatment. in this investigation, cod and total phenolic (tph) reduction were studied with altering tio2 concentration and also ph as main effects. the results revealed that the percentage removals of cod and tph in ferric coagulation were 69.24% and 88.16% respectively, whereas these percentage removals in acid cracking were 62.66% and 57.87% respectively