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March 14, 2026Journal of environmental chemical engineering0 citationsOpen Access

Calcium Peroxide Enhances Photo-formation of Reactive Species in Oil Sands Process Water

Calcium peroxide enhanced photo-formation of reactive species in oil sands process water: Implications for the photochemistry of pit lake

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Authors

MZMing ZhengISIsaac Sánchez-MontesEEEhiaghe Elimian

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Overview

Kinetic modeling and probe-based experiments show calcium peroxide reduces toxicity in oil sands process water, suggesting effective remediation strategies.

Key Points

  • This research investigates the photochemical mechanisms of reactive species formation in oil sands process water using calcium peroxide.
  • Combined kinetic modeling with probe-based experiments to quantify reactive species concentrations.
  • Evaluation of varying calcium peroxide doses to analyze steady-state conditions.
  • Measurement of apparent quantum yields for different reactive species under solar activation.
  • Achieved 68.9% removal of classical naphthenic acids primarily through hydroxyl radical mediation.
  • Significant reduction in hydrocarbons by 65.8% and acute toxicity by 20%.
  • Improved biodegradability with BOD5/COD ratio increasing from < 0.03 to 0.14.
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Cite This Study

Zheng et al. (2026) studied this question.

synapsesocial.com/papers/69b4fbb1b39f7826a300c04dhttps://doi.org/10.1016/j.jece.2026.122114
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