Finally, the bound photosensitizer may be used to oxidize {TAIL ~ undesirable oxidizable compounds} present in {HEAD ~ a hydrocarbon or aqueous fraction} 
Finally , the bound photosensitizer may be used to oxidize { TAIL ~ undesirable oxidizable compounds } present in { HEAD ~ a hydrocarbon or aqueous fraction }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD