Analysis of pharmaceuticals in wastewater and their photodegradation
Photocatalytic degradation of pharmaceutical residues in wastewater
- Editore:
LAP Lambert Academic Publishing
- EAN:
9783659127144
- ISBN:
3659127140
- Pagine:
- 120
- Formato:
- Paperback
- Lingua:
- Tedesco
Descrizione Analysis of pharmaceuticals in wastewater and their photodegradation
The present work deals with the development and validated simple HPLC/UV/FLD analytical procedure which enable the measurement of some of the most consumed pharmaceuticals in Jordan (Caffeine, Methotrexate, Diclofenac, Glimepiride, Ibuprofen) at concentration level of µg/L. Separation was on RP-C8 column with 1 ml/min flow rate of 1:1 H2O, acetonitrile with 0.1% trifluoroacetic acid, extraction on C18 cartridges of 200 ml sample volume. Correlation coefficients of the pharmaceuticals calibration were higher than 0.997 using UV detector and 0.996 using FLD detector. Recoveries were ranged between 90% - 110%. The lowest LOD was 0.38 mg/L. The RSD was ranged between 0.15%- and 9.82%. Samples were taken from three STPs in Amman/ Jordan and two hospital outer drains to detect the concentrations of the studied drugs, the highest concentration was found for Caffeine 1187 µg/L, Methotrexate 699 µg/L, Glimepiride 90 µg/L, Ibuprofen 66 µg/L and Diclofenac 65 µg/L. The study also focused on the photocatalytic degradation of these pharmaceuticals using TiO2 modified with SiO2, and the sun light with 8 hours concentration monitoring. The initial concentrations used in the solar bath system were
