The formation and control of ozonation by-products during drinking water advanced treatment in a pilot-scale study

Wang, Yongjing; Wang, Songtao; Li, Jinglin; Yan, Xinyu; Li, Cheng; Zhang, Minglu; Ren, Ling

doi:10.1016/j.scitotenv.2021.151921

Cited by 8 publications

(1 citation statement)

References 31 publications

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“…For instance, other hydrocarbons following mono‐aromatics in the order of solubility include cycloalkanes, branched alkanes, and n ‐alkanes, which were not measured in the present study (Clark & MacLeod, 1977; Wheeler, 1978; Green & Trett, 1989). Regarding byproducts, keto acids and carboxylic acids are some of the many ozonation byproducts expected to persist (Liu et al, 2022; Nawrocki et al, 2003; Wang et al, 2022). Any effort directed at identifying and quantifying all residual hydrocarbons and byproducts is not feasible.…”

Section: Discussionmentioning

confidence: 99%

The Zebrafish (Danio rerio) Embryo Model as a Tool to Assess Drinking Water Treatment Efficacy for Freshwater Impacted by Crude Oil Spill

Roy

Mohan

Karasik

et al. 2022

Enviro Toxic and Chemistry

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Traditional approaches toward evaluating oil spill mitigation effectiveness in drinking water supplies using analytical chemistry can overlook residual hydrocarbons and treatment byproducts of unknown toxicity. Zebrafish (Danio rerio) were used to address this limitation by evaluating the reduction in toxicity to fish exposed to laboratory solutions of dissolved crude oil constituents treated with 3 mg/L ozone (O 3 ) with or without a peroxone-based advanced oxidation process using 0Crude oil water mixtures (OWMs) were generated using three mixing protocols-orbital (OWM-Orb), rapid (OWM-Rap), and impeller (OWM-Imp) and contained dissolved total aromatic concentrations of 106-1019 µg/L. In a first experiment, embryos were exposed at 24 h post fertilization (hpf) to OWM-Orb or OWM-Rap diluted to 25%-50% of fullstrength samples and in a second experiment, to untreated or treated OWM-Imp mixtures at 50% dilutions. Toxicity profiles included body length, pericardial area, and swim bladder inflation, and these varied depending on the OWM preparation, with OWM-Rap resulting in the most toxicity, followed by OWM-Imp and then OWM-Orb. Zebrafish exposed to a 50% dilution of OWM-Imp resulted in 6% shorter body length, 83% increased pericardial area, and no swim bladder inflation, but exposure to a 50% dilution of OWM-Imp treated with O 3 alone or with 0.5 M H 2 O 2 /M O 3 resulted in normal zebrafish development and average total aromatic destruction of 54%-57%. Additional aromatic removal occurred with O 3 + 1 M H 2 O 2 /M O 3 but without further attenuation of toxicity to zebrafish. This study demonstrates using zebrafish as an additional evaluation component for modeling the effectiveness of freshwater oil spill treatment methods.

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Section: Discussionmentioning

confidence: 99%