Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: UMLS:C1835664 (
TOC
)
2,763
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
In this work, an Iodinated Contrast Medium (ICM),
Iohexol
, was subjected to treatment by 3 Advanced Oxidation Processes (AOPs) (UV, UV/H
2
O
2
, UV/H
2
O
2
/Fe
2+
). Water, wastewater and urine were spiked with
Iohexol
, in order to investigate the treatment efficiency of AOPs. A tri-level approach has been deployed to assess the UV-based AOPs efficacy. The treatment was heavily influenced by the UV transmittance and the organics content of the matrix, as dilution and acidification improved the degradation but iron/H
2
O
2
increase only moderately. Furthermore, optimization of the treatment conditions, as well as modeling of the degradation was performed, by step-wise constructed quadratic or product models, and determination of the optimal operational regions was achieved through desirability functions. Finally, global chemical parameters (COD,
TOC
and UV-Vis absorbance) were followed in parallel with specific analyses to elucidate the degradation process of
Iohexol
by UV-based AOPs. Through HPLC/MS analysis the degradation pathway and the effects the operational parameters were monitored, thus attributing the pathways the respective modifications. The addition of iron in the UV/H
2
O
2
process inflicted additional pathways beneficial for both
Iohexol
and organics removal from the matrix.
...
PMID:Iohexol degradation in wastewater and urine by UV-based Advanced Oxidation Processes (AOPs): Process modeling and by-products identification. 2741 98
