对苯二甲酸
臭氧
过氧化氢
超声
化学
羟基自由基
高级氧化法
有害空气污染物
自来水
核化学
污染物
环境化学
光化学
有机化学
激进的
色谱法
环境工程
催化作用
环境科学
聚酯纤维
作者
Nohemi Milan-Segovia,Huijiao Wang,Fred S. Cannon,Robert Carl Voigt,James C. Furness
标识
DOI:10.1080/01919510701615433
摘要
Abstract The authors monitored hydrogen peroxide (H2O2), ozone (O3), and apparent hydroxyl radical (OH·) concentrations in the liquid phase, along with gas phase ozone when operating an advanced oxidation (AO) system that included H2O2, O3, sonication, and underwater plasma (UWAP). The OH· radical converted non-fluorescent terephthalic acid to fluorescent hydroxyterephthalic acid (HTA). As determined from HTA formation, when a 500 ppm H2O2 dose in tap water was combined with O3 and sonication, nearly twice as much OH· (0.72 ppm) accumulated than with H2O2 alone. When UWAP accompanied H2O2, O3, and sonication, these together generated 15–35% more OH· than when UWAP was excluded. When ozone was introduced into this AO system, the AO system decomposed almost all the O3. This research has been conducted as a part of a study that has appraised this advanced oxidation system (Sonoperoxone) in green sand foundries, where it has diminished volatile organic compound (VOC) and hazardous air pollutant (HAP) emissions by 20–75%; and clay and coal consumption by 20–35%. Keywords: OzoneHydrogen PeroxideHydroxyl RadicalAdvanced OxidationTerephthalic AcidFoundry ApplicationsSonoperoxone
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