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Mechanistic insights into algal degradation induced by ROS generated from MNBs
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Peng-yu ZHOU1, 2, Liang HUANG3, Xin-ze TAN1, 2, Yao-hua LI1, 2, Jun LUO1, 2, Hong-feng CHEN1, 2, *
China Environmental Science | 2025, 45(12) : 6681 - 6693
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China Environmental Science | 2025, 45(12): 6681-6693
• Water Pollution Control •
Mechanistic insights into algal degradation induced by ROS generated from MNBs
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Peng-yu ZHOU1, 2, Liang HUANG3, Xin-ze TAN1, 2, Yao-hua LI1, 2, Jun LUO1, 2, Hong-feng CHEN1, 2, *
Affiliations
  • 1.College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China
  • 2.Engineering Research Center for the Eco-Environmental Protection of the Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China
  • 3.Yichang Cultivated Land Quality and Fertilizer Management Station, Yichang 443002, China
Published: 2025-12-20
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Eutrophication-induced algal blooms significantly disrupt the stability of aquatic ecosystems. Micro-nano bubbles (MNBs), which generate reactive oxygen species (ROS) upon self-collapse, exhibit strong oxidative capability and hold great promise for water pollution control. This study investigates the patterns and impact factors of ROS generation by MNBs under various environmental conditions, and further explores the role of ROS in the degradation of Chlorella. The results demonstrate that higher gas flow rates, longer aeration times, and greater water depths favor the generation of ROS, with hydroxyl radicals (·OH) identified as the primary active species. Degradation experiments reveal that, compared to conventional ozone bubbles (O3), O3-MNBs produce a higher yield of ROS, which further induce oxidative damage to the Chlorella cell membrane, leading to accelerated leakage of intracellular proteins and nucleic acids, and ultimately causing cell lysis. ROS inhibition studies confirm that ·OH is the key driver of cell membrane damage in Chlorella. This study provides insights into the generation mechanisms of ROS by MNBs, elucidates their roles in algal inactivation, and offers valuable theoretical support for the management of eutrophic water bodies.

micro-nano bubbles  /  reactive oxygen species (ROS)  /  eutrophication  /  algal degradation
周鹏宇, 黄亮, 檀鑫泽, 李耀华, 罗俊, 陈红凤. 微纳米气泡产ROS规律及其对藻灭活机理分析. 中国环境科学, 2025 , 45 (12) : 6681 -6693 .
Peng-yu ZHOU, Liang HUANG, Xin-ze TAN, Yao-hua LI, Jun LUO, Hong-feng CHEN. Mechanistic insights into algal degradation induced by ROS generated from MNBs[J]. China Environmental Science, 2025 , 45 (12) : 6681 -6693 .
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Year 2025 volume 45 Issue 12
47
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Article Info
  • Receive Date：2025-04-21
  • Online Date：2026-10-08
  • Published：2025-12-20
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History
  • Received：2025-04-21
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Affiliations
    1.College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China
    2.Engineering Research Center for the Eco-Environmental Protection of the Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China
    3.Yichang Cultivated Land Quality and Fertilizer Management Station, Yichang 443002, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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