PMID- 27287494 OWN - NLM STAT- MEDLINE DCOM- 20170522 LR - 20181202 IS - 1614-7499 (Electronic) IS - 0944-1344 (Linking) VI - 24 IP - 7 DP - 2017 Mar TI - Evaluation of sulfathiazole degradation by persulfate in Milli-Q water and in effluent of a sewage treatment plant. PG - 6270-6277 LID - 10.1007/s11356-016-7036-z [doi] AB - The presence of antibiotics and their metabolites in natural waters has raised some concern among scientists around the world because it can lead to bacterial resistance and other unknown consequences to mankind and wildlife. Persulfate (PS)-driven oxidation is a new technology that has been used successfully to remediate contaminated sites, but its use to treat wastewater, especially sewage treatment plant (STP) effluent, is still scarce. This paper describes the effect of several persulfate activation methods for degrading sulfathiazole (STZ) in Milli-Q water and in STP effluent. Some parameters, such as pH, persulfate concentration, presence of Mn(2+), Zn(2+), Cu(2+), Fe(2+), and Fe(3+), as well as copper and iron organic complexes, were studied in STZ degradation. Raising the pH from 5 to 9, as well as the persulfate concentration, resulted in increased STZ degradation. Among the transition metals evaluated, only Fe(2+) and Cu(2+) were able to activate persulfate molecules. Copper was a better activator than iron since its effect lasts longer. Citrate was the best ligand evaluated increasing Fe(II) activation capacity at pH 7. Hydroxylamine addition to Fe(II) on persulfate system extended the Fe(II) effect. The presence of bicarbonate or humic acid did not affect PS-driven degradation of STZ. Finally, the degradation of STZ in STP effluent promoted by PS-driven oxidation (25 degrees C) was as fast as in Milli-Q water, proving to be successful. FAU - Velosa, Adriana C AU - Velosa AC AD - Chemical Engineering Department, University of Sao Paulo, Av. Luciano Gualberto, travessa 3, 380, Sao Paulo, 05508-900, Brazil. acvelosa@gmail.com. FAU - Nascimento, Claudio A O AU - Nascimento CAO AD - Chemical Engineering Department, University of Sao Paulo, Av. Luciano Gualberto, travessa 3, 380, Sao Paulo, 05508-900, Brazil. LA - eng PT - Journal Article DEP - 20160611 PL - Germany TA - Environ Sci Pollut Res Int JT - Environmental science and pollution research international JID - 9441769 RN - 0 (Metals, Heavy) RN - 0 (Sewage) RN - 0 (Sulfates) RN - 0 (Sulfathiazoles) RN - 0 (Water Pollutants, Chemical) RN - 059QF0KO0R (Water) RN - Y7FKS2XWQH (Sulfathiazole) SB - IM MH - Metals, Heavy/chemistry MH - Oxidation-Reduction MH - Sewage/*chemistry MH - Sulfates/*chemistry MH - Sulfathiazole MH - Sulfathiazoles/*chemistry MH - Water/*chemistry MH - Water Pollutants, Chemical/*chemistry MH - Water Purification/*methods OTO - NOTNLM OT - Bicarbonate OT - Complexes OT - Copper OT - Humic acid OT - Hydroxylamine OT - Iron OT - Oxidation EDAT- 2016/06/12 06:00 MHDA- 2017/05/23 06:00 CRDT- 2016/06/12 06:00 PHST- 2016/01/13 00:00 [received] PHST- 2016/06/05 00:00 [accepted] PHST- 2016/06/12 06:00 [pubmed] PHST- 2017/05/23 06:00 [medline] PHST- 2016/06/12 06:00 [entrez] AID - 10.1007/s11356-016-7036-z [pii] AID - 10.1007/s11356-016-7036-z [doi] PST - ppublish SO - Environ Sci Pollut Res Int. 2017 Mar;24(7):6270-6277. doi: 10.1007/s11356-016-7036-z. Epub 2016 Jun 11.