Decomposition of dibutyl phthalate in goat whey solution by different catalytic ozonation treatments: Performance and efficiency

Abstract

For efficient decomposition of dibutyl phthalate (DBP) in goat whey solution, we are using ozone (O 3 ), ozone with zinc oxide (O 3 /ZnO), and ozone with zinc oxide and activated carbons (O 3 /ZnO/ACs) systems through catalytic ozonation process. The performance and efficiency of system were evaluated. The results showed that ozonation of sample using O 3 /ZnO/ACs system was found to be the most efficient for the DBP degradation. A maximum DBP degradation value of 99.04% was achieved after ozonation of whey solution using O 3 /ZnO/ACs system at O 3 dosage 15 mg/L, pH 4, and 80 min. The ozonation treatments did not result in significant changes in protein, lactose, and ash content of whey ( P > 0.05), while the fat content of whey decreased after ozonation. The results indicated that catalytic ozonation using O 3 /ZnO/ACs system can be suggested as an efficient process for the removal of DBP from contaminated whey and dairy products to prevent potential adverse health effect. • O 3 /ZnO/ACs system is the most efficient for DBP degradation in goat whey. • The maximum degradation value of DBP could achieved to 99.04% by using O 3 /ZnO/ACs system. • The degradation of DBP was depended on reaction time, pH value, and catalyst dosage. • Greater degradation rate of DBP was found at acidic pH. • O 3 /ZnO/ACs system at O 3 dosage 15 mg/L, pH 4, and 80 min was appropriate treatment for whey.