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陈豪,李婷,孙静,李乾,崔朝,李广悦.氧纳米气泡强化甘蓝修复铀污染土壤[J].南华大学学报(自然科学版),2025,(1):12~19.[CHEN Hao,LI Ting,SUN Jing,LI Qian,CUI Zhao,LI Guangyue.Reinforcement Effects of Oxygen Nanobubbles on the Phytoremediation of Uranium Contaminated Soil by Brassica Oleracea[J].Journal of University of South China(Science and Technology),2025,(1):12~19.]

氧纳米气泡强化甘蓝修复铀污染土壤

Reinforcement Effects of Oxygen Nanobubbles on the Phytoremediation of Uranium Contaminated Soil by Brassica Oleracea

投稿时间：2024-05-14

DOI：

中文关键词: 氧纳米气泡植物修复铀污染土壤甘蓝

英文关键词:nanobubbles phytoremediation uranium contaminated soil Brassica oleracea

基金项目:国家自然科学基金项目(51674146);湖南省中央引导地方科技发展专项资金项目(2018CT5009;YDZX201843000028582018)

作者	单位
陈豪	南华大学资源环境与安全工程学院,湖南衡阳421001 南华大学铀矿冶生物技术国防重点学科实验室,湖南衡阳421001
李婷	南华大学资源环境与安全工程学院,湖南衡阳421001 南华大学铀矿冶生物技术国防重点学科实验室,湖南衡阳421001
孙静	南华大学资源环境与安全工程学院,湖南衡阳421001 南华大学铀矿冶生物技术国防重点学科实验室,湖南衡阳421001
李乾	南华大学资源环境与安全工程学院,湖南衡阳421001 南华大学铀矿冶生物技术国防重点学科实验室,湖南衡阳421001
崔朝	南华大学资源环境与安全工程学院,湖南衡阳421001 南华大学铀矿冶生物技术国防重点学科实验室,湖南衡阳421001
李广悦	南华大学资源环境与安全工程学院,湖南衡阳421001 南华大学铀矿冶生物技术国防重点学科实验室,湖南衡阳421001

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中文摘要:

为探究在不同溶解氧量条件下的纳米气泡水对甘蓝的生长及铀富集量的影响,以甘蓝为供试植物,在温室大棚中开展了氧纳米气泡强化植物修复铀污染土壤研究。研究了不同溶解氧量(dissolved oxygen,DO)条件下的氧纳米气泡水对甘蓝的生物量、富集铀的性能、抗氧化酶的活性、根际微生物群落的影响。当DO值为22.4~42.2 mg/L时,甘蓝的总鲜质量提高了56.79%~73.69%,铀的富集量提高了59.08%~119.05%,铀的富集系数提高了2.27%~28.87%。当DO值为28.9 mg/L时,甘蓝的过氧化物酶(peroxidase,POD)的活性提高了45.54%,当DO值为32.0 mg/L时,甘蓝的过氧化氢酶(catalase,CAT)的活性提高了145.45%。施用氧纳米气泡后,纤毛菌科细菌和几丁质降解菌科细菌比例升高,提高了甘蓝根际土的微生物群落的丰富度和多样性。以上结果表明,当DO值为22.4~42.2 mg/L时,施加氧纳米气泡均显著促进了甘蓝的生长和对铀的富集。

英文摘要:

The aim of this project is to investigate the effects of nanobubble water under different dissolved oxygen (DO) conditions on the growth of Brassica oleracea and the accumulation of uranium. Brassica oleracea was chosen as the test plant, and a greenhouse experiment was conducted to explore the enhancement of phytoremediation of uranium-contaminated soil by oxygen nanobubbles. The study assessed the impacts of oxygen nanobubble water under different DO conditions on Brassica oleracea biomass, uranium accumulation, antioxidant enzyme activity, and rhizosphere microbial community. When the DO values ranged from 22.4 to 42.2 mg/L, the total fresh weight of Brassica oleracea increased by 56.79% to 73.69%, and the uranium accumulation increased by 59.08% to 119.05%, with an increase in uranium accumulation coefficient of 2.27% to 28.87%. At a DO value of 28.9 mg/L, the activity of peroxidase (POD) in Brassica oleracea increased by 45.54%, while at a DO value of 32.0 mg/L, the activity of catalase (CAT) increased by 145.45%. Application of oxygen nanobubbles resulted in an increase in the proportion of microscillaceae bacteria and chitinophagaceae bacteria, enhancing the richness and diversity of the microbial community in Brassica oleracea rhizosphere. These results demonstrate that the application of oxygen nanobubbles significantly promoted the growth of Brassica oleracea and the accumulation of uranium when the DO values ranged from 22.4 to 42.2 mg/L.

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