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| 论文摘要： | Purpose of Review Hydrogen peroxide (H2O2) has demonstrated significant potential in controlling cyanobacterial blooms, with its efficacy and ecological effects assessed across diverse aquatic ecosystems. This review scrutinized the death mechanism, affecting factors, impact on the aquatic ecosystem, and development and challenge of the technique; aimed to assist with the application; and provide direction for future study. Recent Findings Glutathione and glutathione peroxidase were pivotal in the detoxification of H2O2 in bloom-forming cyanobacteria, yet this system is less efficient than that in chlorophytes and diatoms, leading to selective suppression on cyanobacteria and a shift toward other phytoplankton after H2O2 application. Notably, colonial Microcystis was less sensitive than filamentous bloom-forming cyanobacteria, and non-toxic Microcystis was less sensitive than toxic Microcystis. Light intensity was particularly important for the effective application of H2O2. The presence of chlorophyta, H2O2-degrading bacteria, and high cyanobacterial biomass will diminish the removal efficiency. Toxic metabolites such as microcystin could be degraded in a couple of days. Consecutive H2O2 exposure, slowing-releasing H2O2 formulation, and combining with other technologies would be efficient ways to minimize non-target effects specifically on zooplankton, e.g., rotifer and cladoceran. Summary H2O2 is recognized as an environmentally friendly and promising cyanocide. It could be particularly applied in the early stage of cyanobacterial bloom on sunny days. A pre-test is crucial for the successful application across various aquatic ecosystems. Future research should focus on minimizing the impact on non-target organisms, preventing secondary blooms, and refining H2O2 as a sustainable bloom management tool. |
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