Lincomycin solar photodegradation, algal toxicity and removal from wastewaters by means of ozonation.
Antibiotic molecules have been reported among the xenobiotics present at trace levels in sewage treatment plant (STP) effluents and aquatic environment. Lincomycin, one of the most used in clinical practices whose presence in the STP effluents has been often documented, is submitted to an extensive investigation to assess its persistence in the environment and toxicity towards different algal strains. The possibility to remove the lincomycin from water by means of ozonation is demonstrated and a reduction of toxicity of ozonated solutions on S. leopoliensis, with respect to untreated solutions containing this compound, is obtained even just for 1h of treatment. Kinetic constants for the attack to lincomycin of ozone (from 1.53 x 10(5) M(-1)s(-1) at pH = 3.0 and 4.93 x 10(5) M(-1)s(-1) at pH = 6.7) and OH radicals (4.37 x 10(9) M(-1)s(-1) at pH = 5.5 and 4.59 x 10(9) M(-1)s(-1) at pH = 7.5) are also evaluated.
Andreozzi
Roberto
R
Dipartimento di Ingegneria Chimica, Facoltà di Ingegneria, Università di Napoli Federico II, p.le V.Tecchio 80, 80125-Napoli, Italia.
Canterino
Marisa
M
Lo Giudice
Roberto
R
Marotta
Raffaele
R
Pinto
Gabriele
G
Pollio
Antonino
A
D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000633:toxicity*; D056890:Eukaryota; D007700:Kinetics; D008034:Lincomycin / Q000737:chemistry / Q000633:toxicity*; D010083:Oxidants, Photochemical / Q000737:chemistry; D010126:Ozone / Q000737:chemistry; D010782:Photolysis; D018675:Toxicity Tests; D014865:Waste Disposal, Fluid; D018508:Water Purification / Q000379:methods*
D000900:Anti-Bacterial Agents; D010083:Oxidants, Photochemical; D010126:Ozone; D008034:Lincomycin