Irrigation using hybrid constructed wetland treated domestic sewage: Uptake of phthalic acid esters and antibiotics by Ipomoea aquatica forssk
| Autor: | Chunhui Xiong, Yang Yang, Razanatsoa Siou Line Naïla, Nora Fung-yee Tam, Xiaomeng Zhang, Huanping Liu, Xiaoyan Tang, Yunv Dai |
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| Rok vydání: | 2020 |
| Předmět: |
Irrigation
China Environmental Engineering Health Toxicology and Mutagenesis 0211 other engineering and technologies Phthalic Acids Sewage Bioconcentration 02 engineering and technology 010501 environmental sciences Biology 01 natural sciences Toxicology chemistry.chemical_compound food Environmental Chemistry Humans Waste Management and Disposal 0105 earth and related environmental sciences 021110 strategic defence & security studies business.industry Ipomoea aquatica Esters Pollution Hazard quotient food.food Anti-Bacterial Agents Phthalic acid Wastewater chemistry Wetlands Constructed wetland Ipomoea business |
| Zdroj: | Journal of hazardous materials. 405 |
| ISSN: | 1873-3336 |
| Popis: | Irrigation with treated wastewater (WW) has been promoted to meet global water demands. This study investigates the occurrence and accumulation of targeted phthalic acid esters (PAEs) and antibiotics in soil and Ipomoea aquatica Forssk. irrigated with WW discharged from six hybrid constructed wetlands (HCWs), with evaluation of the associated human health risks. Results revealed that HCWs can effectively reduce the transfer of PAEs and antibiotics to soil and I. aquatica. HCW2 (VF-SF-HF) was found to be most efficient for the removal of PAEs (68.4%−95.3%) and antibiotics (28.5%−99.4%). Among the targeted PAEs, the concentration of bis (2-ethyl) hexylphthalate (DEHP) was the highest in irrigation water, soil and I. aquatica, while benzylphthalate (BBP) exhibited the highest bioconcentration factor (BCFF). Among the targeted antibiotics, the concentration of sulfapyridine (SPD) was highest in various environmental media, while norfloxacin (NFX) exhibited the highest BCFF. The properties of PAEs and antibiotics were found to be responsible for the differential uptake patterns. The estimation of the threshold of toxicological concern and hazard quotient showed that I. aquatica irrigated with HCWs treated wastewater presented a minor risk to human health. However, comprehensive safety evaluation is required for the widespread use of HCWs treated wastewater for irrigation purposes. |
| Databáze: | OpenAIRE |
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