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冶炼综合废水电化学法脱氮处理杨晓松1,2,邵立南3(1.北京市矿业大学化学与环境工程学院2.北京市北京矿冶研究总院 3.北京矿冶研究总院,北京 100044)摘 要:针对当前各种冶炼综合废水中氨氮处理方法存在的问题,通过试验系统研究电化学法脱氮的最佳运行参数和去除机理.结果表明,最佳工艺参数为投氯比为1∶5和电流强度为1.7A.运行费用为6.9元/t,与物化法,吹脱法等相比具有处理效率高,运行费用低,设备占地面积小等综合优势.电化学法脱氮中,"活性氯"(OCl-)与氨氮发生的反应起主导作用.关键词......
within 20 min. The extracted Sc can be stripped using 5 mol/L NaOH solution as eluent at 363 K with the stripping rate of 92.1% obtained. The extraction mechanism was clearly elucidated by slope analysis... concentrations in the aqueous phase before and after extraction, respectively, mg/L; Vaqu and Vorg represent the volume of aqueous phase and organic phase, respectively, mL. The stripping tests......
concentrations, internal phase concentration, extraction time, volume ratio of the membrane phase to internal stripping phase and that of the emulsions to the aqueous external phase. The effects...内比对液膜稳定性的影响 Table 1 Effects of volume fractions of L113B and kerosene, NaOH concentration, volume ratios of membrane phase to internal stripping phase on stability of emulsion liquid membrane......
and stripping behaviors of SIRs-INET-3/XAD-16 were further studied. The washed off LMW polymers had the Mn of 36,656, Mw of 40,310 and polydispersity coefficient of 1.10. The SIRs-INET-3/XAD-16 had......
and stripping behaviors of SIRs-INET-3/XAD-16 were further studied. The washed off LMW polymers had the Mn of 36,656, Mw of 40,310 and polydispersity coefficient of 1.10. The SIRs-INET-3/XAD-16 had......
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羧基化碳纳米管修饰碳糊电极伏安法测定痕量铝李俊华1,邝代治1,冯泳兰1,曾荣英1,屈景年1(1.湖南省衡阳市衡阳师范学院化学与材料科学学院功能金属有机材料湖南省普通高等学校重点实验室)摘 要:以羧基化多壁碳纳米管(c-MWCNT)修饰的碳糊电极为工作电极,建立了一种无汞测定痕量铝的新方法.在0.1 mol/L的HAc-NaAc电解液(pH5.2)中,铬蓝黑R(EBBR)在羧基化多壁碳纳米管修饰碳糊电极表面上进行阳极扫描时出现4个......