用O减轻废弃营养溶液中酸驱动的自毒性
Uijeong Han1, Yong-Gu Lee2, Jihui Byeon1
1Department of Biological and Environmental Science, Dongguk University, Ilsandong-gu, Goyang-si, Gyonggido, 10326, Republic of Korea.
Environmental pollution (Barking, Essex : 1987)
|June 3, 2023
概括
酸 (BA) 导致植物自毒性. 用过氧化进行臭氧化有效降解BA,并减少水培系统中的发芽和根生长抑制,提供了具有成本效益的解决方案.
科学领域:
- 环境科学 环境科学
- 农业科学 农业科学
- 水处理 处理水的方法
背景情况:
- 根排液的酸 (BA) 是关闭式水培系统中植物自毒性的主要原因,即使度低.
- 植物自毒性对发芽和根部发育产生负面影响,阻碍了可持续农业和水耕种.
研究的目的:
- 研究臭氧 (O3) 和臭氧/过氧化 (O3/H2O2) 氧化处理在减轻酸驱动的自毒性方面的有效性.
- 评估酸的降解,以及废弃营养溶液 (WNS) 中的发芽抑制 (GI) 和根生长抑制 (RI) 的降低.
主要方法:
- 含有酸的废物营养溶液被处理成不同度的O3 (1-8毫克L-1) 和H2O2 (4,8毫克L-1).
- 测量了酸降解率,发芽抑制 (GI) 和根生长抑制 (RI).
- 分析了不同治疗条件的运营成本.
主要成果:
- 单次O3治疗显示了有限的酸降解 (高达14.1%) 和微不足道的缓解发芽抑制.
- O3/H2O2处理显著增强了酸降解 (高达24.8%),并大幅降低了GI (高达7.69%) 和RI (高达0.88%).
- 在特定的O3/H2O2度下观察到BA矿化和植物毒性减轻的最佳结果,BA125 (1-8) 显示出高效率和成本效益.
结论:
- 与单独的O3相比,联合O3/H2O2氧化是一种优越的方法,用于降解酸并减轻水培系统中的植物自毒性.
- 由于其高酸矿化率,有效的自毒性减轻和有利的运营成本,建议使用 BA125 (1-8) 处理条件作为最佳治疗方法.
- 这项研究为管理酸驱动的自毒性提供了可行的策略,为可持续的水栽培实践做出了贡献.
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