Mihaela Iordache, Luisa Roxana Popescu, Ioan Iordache
Removal of the organochlorine compounds from industrial wastewater by sonochemical processes was performed in order to evaluate process’ efficiency. Sonochemical degradation of the following organochlorine compounds: 1,2dichloropropane, 1,1,2-trichloroethane, 2 ethylhexanol and , ’—dichlorodiisopropylether was carried out. The experiments was realized with two types of equipment: ultrasound bath UCD-150 and sonotrode UP 200 Ht. Experimental results showed high efficient removal for all compounds: 1,1,2- trichloroethane and ’ dichlorodiisopropyl ether 78.0%, 1,2 Dichloropropane 66.0%, 2 ethylhexanol 35.0 % in bath ultrasound treatment after 60 minutes. Degradation of ’-dichlorodiisopropyl ether, 1,1,2-trichloroethane, 1,2 dichloropropane and 2 ethylhexanol performed much better for sonotrode with 14 mm diameter (89.0%, 77.5%, 73.0%, respectively 73.0%) than for sonotrode with 40 mm diameter (64.0%, 64.0%, 53.0% and 48.0%). This difference between the two probes regarding removal efficiency can be explained by different amplitudes of equipment.