دراسة تفكيك بعض المضادات الحيوية في المياه العادمة باستخدام تقانة الأكسدة الضوئية الحفزية : الجزء السابع

الملخص EN

The growing use of pharmaceutical products, such as the antibiotics, is becoming a new environmental problem.

Besides their High concentrations which reach wastewater treatment plants (WWTP), showed that these substances are quite resistant to biodegradation.

A possible treatment by Advanced Oxidation Processes has to be investigated .

The photocatalytic degradation of the following antibiotics; Ampicillin (Amp), Amoxicillin (Amx), Cefotaxime (Cef), and Ofloxacin (Ofl), in aqueous solution was investigated by using titanium dioxide (TiO2) P25 Degussa.

A comparison of the adsorption properties and the kinetics of reaction has been studied.

The Photodegradation of these antibiotics demonstrated pseudo- firstorder kinetics.

Our results indicated that the photocatalytic degradation of these antibiotics were in the order of: Ofl > Cef >Amx > Amp.

However, the mineralization reached 82.5% in term of TOC,and (48.43%)in term of COD.

The removal efficiency increased up to 99% when H2O2 was added up to 20mM.