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The present paper describes photodegradation of non-steroidal anti-inflammatory drug ibuprofen sodium salt (C 13 H 17 O 2 Na) in a new hybrid system coupling photolysis and direct contact membrane distillation (DCMD). Photodegradation was conducted using UV 254  germicidal lamp. The initial concentration of C 13 H 17 O 2 Na was c 0 = 0.05, 0.1, 0.2 or 0.4 mmol/dm 3 . After 5 h of the process the mass of C 13 H 17 O 2 Na in the feed decreased for 99.8-96.7% for c0 of 0.05-0.4 mmol/dm 3 , respectively. The amount of total organic carbon (TOC) in the feed was lowered by ca. 75%, regardless of initial C 13 H 17 O 2 Na concentration. Among the volatile compounds which passed through the membrane low amounts of C 13 H 18 O 2  (0.04-0.16 μmol) and some other organic compounds measured as TOC (1.2-3.7 mg) were present. The conductivity of distillate did not exceed the value of 2.6 μS/cm and pH was about 5.7. The total effectiveness of organics removal was 99.97-99.99% for C 13 H 18 O 2  and 94.8- 98.0% for TOC, dependent on initial concentration of ibuprofen sodium salt.

Degradation of Ibuprofen Sodium Salt in a Hybrid Photolysis – Membrane Distillation System Utilizing Germicidal UVC Lamp