用颗粒状活性炭灭来自UV/H的残留H2O2:二碳酸盐的显著影响
Jinfeng Zeng1, Miao Zhang2, Xinxin Qin3
1Jiangxi Provincial Key Laboratory of Water Ecological Conservation at Headwater Regions, Jiangxi University of Science and Technology, 1958 Ke-jia Road, Ganzhou, 341000, China; Hydrology and Water Resources Monitoring Center for Ganjiang Upstream Watershed, 8 Zhang-jia-wei Road, Ganzhou, 341000, China.
Chemosphere
|March 10, 2024
概括
颗粒活性炭 (GAC) 在UV处理后有效地灭剩余的过氧化 (H2O2). 双碳酸盐通过促进GAC表面的基生成,显著增强了这一过程,提高了水处理效率.
科学领域:
- 环境化学环境化学
- 水处理技术水处理技术
- 先进的氧化过程 先进的氧化过程
背景情况:
- 紫外线/H2O2是一种先进的氧化工艺,用于去除饮用水中的有机微污染物.
- 剩余的过氧化 (H2O2) 必须灭,以防止在处理后的消毒过程中增加的需求.
- 颗粒活性炭 (GAC) 可以灭剩余的H2O2并去除溶解的有机物质,但它的动力学和机制需要进一步研究.
研究的目的:
- 分析来自UV/H2O2.2.的剩余H2O2的GAC火的动力学和控制因素.
- 调查二碳酸盐 (HCO3−) 增强H2O2通过GAC火的机制.
- 为了评估GAC在真实水矩阵中的性能.
主要方法:
- 进行了动力学实验,以确定H2O2被GAC分解的速度.
- 分析了GAC属性,例如表面功能组.
- 在GAC表面的界面基 (HO•) 区域和持久性自由基 (PFR) 被可视化和量化.
主要成果:
- 用GAC分解H2O2之后是第一阶动力学,正常化速率常量 (kn) 为1.6 × 10−3 L g−1 min−1.1.
- 在GAC上的性条件和基本表面群有利于H2O2火.
- 二碳酸盐 (HCO3−) 通过增加GAC表面的HO•和PFR度,显著促进了H2O2火,这一发现在真水中得到了验证.
结论:
- 在UV/H2O2处理后,GAC有效地灭剩余的H2O2,其动力学受到GAC特性和水化学的影响.
- 双碳酸盐在通过增加基质生成来提高GAC的H2O2火效率方面发挥着至关重要的协同作用.
- 这项研究阐明了用二碳酸盐增强的H2O2的GAC火的机制,突出了其在水处理中的潜在应用.
关键词:
颗粒状活化碳是什么 颗粒状活化碳氧化 (HCO) 是一种氧化物.消火 消火 消火 消火剩余的H ((2) O ((2)) 是什么?紫外线/{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}更多相关视频
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