Details

Autor(en) / Beteiligte

• Wang, Yueyao
• Jiang, Lei
• Ali, Mahmoud M.
• Jiang, Jinyue
• Xu, Yongdong
• Liu, Zhidan

Titel

Aquatic life criteria of hydrothermal liquefaction wastewater via ecotoxicity test and modeling

Ist Teil von

• Journal of hazardous materials, 2024-06, Vol.471, p.134289-134289, Article 134289

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2024

Quelle

Elsevier ScienceDirect Journals

Beschreibungen/Notizen

• Wastewater resulting from hydrothermal liquefaction (HTL-AP) of biowaste is gaining attention as an emerging hazardous material. However, there is a lack of specific and systematic ecotoxicity studies on HTL-AP. This study addresses this gap by conducting acute toxicity tests on HTL-AP using typical aquatic species and integrating these results with predicted toxicity values from interspecies correlation estimation models to establish aquatic life criteria. HTL-AP exhibited significant toxicity with LC50 of 956.12–3645.4 mg/L, but demonstrated moderate toxicity compared to common freshwater pollutants like commercial microbicides, personal care products, and insect repellents. The resulting hazardous concentration for 5 % of species (HC5), the criterion maximum concentration, and the short-term water quality criteria for aquatic were 506.0, 253.0, and 168.7 mg/L, respectively. Notably, certain organisms like Misgurnus anguillicaudatus and Cipangopaludina chinensis showed high tolerance to HTL-AP, likely due to their metabolic capabilities on HTL-AP components. The significant decrease in HC5 values for some HTL-AP substances compared to pure compounds could indicate the synergistic inhibition effects among HTL-AP compositions. Furthermore, according to the established criteria, HTL-AP required significantly less diluted water (13 t) than carbendazim (1009 t) to achieve biosafety, indicating a safer release. This research establishes a preliminary water quality criterion for HTL-AP, offering a valuable reference for risk assessment and prediction in the utilization of HTL-AP within environmental contexts. [Display omitted] •The ecotoxicity of HTL-AP was first systematically evaluated.•Water life criterion for HTL-AP was first derived based on testing and model.•A synergistic toxicity of compounds in HTL-AP was confirmed.•The metabolic effects of organisms contributed to the varied tolerances.•The biosafety of HTL-AP was estimated in different application scenarios.