| Title: | Occurrence and fate of Adsorbable Organic Halogens (AOX) in two WWTPs from Romania |
| Author(s): | Chiriac FL; Stoica C; Scutariu RE; Pirvu F; Paun I; Iancu V; Galaon T; Nita-Lazar M; |
| Address: | "National Research and Development Institute for Industrial Ecology - ECOIND, Drumul Podu Dambovitei 71-73, Sector 6, 060652, Bucharest, Romania. Agilrom Scientific SRL, Grigore Cobalcescu 39, Sector 1, 010193, Bucharest, Romania. National Research and Development Institute for Industrial Ecology - ECOIND, Drumul Podu Dambovitei 71-73, Sector 6, 060652, Bucharest, Romania. mihai.nita@incdecoind.ro" |
| Journal Title: | Arch Environ Contam Toxicol |
| DOI: | 10.1007/s00244-022-00923-w |
| ISSN/ISBN: | 1432-0703 (Electronic) 0090-4341 (Linking) |
| Abstract: | "Absorbable organic halogens (AOX) are a global parameter which refers to a group of chemical compounds that contain one or more chlorine, bromine or iodine atoms in their molecule and can easily adsorb on activated carbon. The global concern related to the occurrence of the AOX compounds in the environment is due to their toxic and mutagenic effects on aquatic organisms and their potential role as inhibitors of microorganism growth, even at AOX low concentrations. The purpose of this study was to analyze the presence, occurrence and composition of absorbable organic halogens in wastewater and sewage sludge. In addition, their genotoxicity effect on the environment was tested on a bacterial biological model. Daily mass loading, mass emission and fate of AOX parameter were investigated in two wastewater treatment plants (wastewater and sewage sludge samples) from Romania, Galati and Iasi. Their AOX daily mass loadings (151 and 55.4 g/day/1000people) and mass emissions into the environment (47.8 and 23.5 g/day/1000 people) for both locations were correlated with the concentration level of volatile organic compounds, chlorophenols, organochlorine pesticides and polychlorinated biphenyls from both wastewater and sewage sludge, respectively. Concentration levels of detected halogenated organic compounds (regulated by current standards) accounted only for a small percentage (3.70-14.5%) from the total AOX amount. An exception was observed in the case of dehydrated sludge samples where the identified compounds accounted for 80% of the AOX content from Iasi WWTP and 53% for Galati. Evaluating the genotoxic activity of AOX in sludge samples showed that genotoxicity was not induced up to 100 microg/mL dehydrated sludge" |
| Keywords: | "Halogens/analysis Humans Romania Sewage/chemistry Waste Disposal, Fluid Wastewater *Water Pollutants, Chemical/analysis/toxicity *Water Purification;" |
| Notes: | "MedlineChiriac, Florentina Laura Stoica, Catalina Scutariu, Roxana-Elena Pirvu, Florinela Paun, Iuliana Iancu, Vasile Galaon, Toma Nita-Lazar, Mihai eng 2022/04/19 Arch Environ Contam Toxicol. 2022 May; 82(4):592-601. doi: 10.1007/s00244-022-00923-w. Epub 2022 Apr 18" |
