ZhangLiping1, XiangJun1, YanZhenyu1, et al. Mechanism study on ozonization degradation of salicylhydroxamic acid in flotation wastewater[J]. Journal of Mining Science and Technology, 2019, 4(1): 79-85.
Citation: ZhangLiping1, XiangJun1, YanZhenyu1, et al. Mechanism study on ozonization degradation of salicylhydroxamic acid in flotation wastewater[J]. Journal of Mining Science and Technology, 2019, 4(1): 79-85.

Mechanism study on ozonization degradation of salicylhydroxamic acid in flotation wastewater

  • Salicylhydroxamicacidisanovelflotationreagent,thispaperstudiedO3oxidationtreatment ofsalicylhydroxamicacidinsimulatedflotationwastewater*Meanwhile,thepossibledegradationpathway ofsalicylichydroxamicacidwasdeducedthroughultravioletspectrophotometry,infraredspectrumand highperformanceliquidchromatography*Theexperimentalresultsshowedthattheremovalefficiencyof salicylichydroxamicacidtreatedbyO3 oxidationwasobviously*Wheninitialconcentrationofsalicyl⁃ hydroxamicwas50mg/L,pHvaluewas8,ozoneconcentrationwas1*3mg/Landreactiontimewas 15min,theremovalratewasgreaterthan90%,butthemineralizationratewasjust19*99%*Through theanalysisofintermediates,thedegradationpathwayofsalicylhydroxamicacidwaspreliminarilycon⁃ cludedas:salicylhydroxamicacid→salicylicacid+hydroxylamine→catechol→maleic→smallmole⁃ culeorganicacid+carbondioxide+water*
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