熱活化過硫酸鈉耦合甲酸技術(shù)研究——處理水溶液中四氯化碳與六價鉻污染
發(fā)布時間：2019-05-30 04:17
【摘要】：以甲酸為活化劑,耦合熱活化過硫酸鈉技術(shù)產(chǎn)生還原性二氧化碳陰離子自由基(CO_2~-),從而還原去除水溶液中四氯化碳(CT)和Cr(Ⅵ),考察過硫酸鈉和甲酸初始濃度的影響以及復(fù)合污染處理效果.結(jié)果表明:當過硫酸鈉與甲酸濃度均為100mmol/L時,單獨CT或Cr(Ⅵ)分別在120min、60min內(nèi)基本完全去除(50℃),且污染物去除效率隨過硫酸鈉及甲酸濃度升高而增強.在CT和Cr(Ⅵ)復(fù)合污染體系中,Cr(Ⅵ)的存在能夠抑制CT降解,且抑制程度隨Cr(Ⅵ)初始濃度升高而提高,但Cr(Ⅵ)去除率隨CT初始濃度增大而升高.加入CO_2~-猝滅劑(甲基紫精)能夠抑制CT降解,但促進Cr(Ⅵ)去除,表明有機物的存在能夠增強Cr(Ⅵ)去除效率.
[Abstract]:Using formic acid as activating agent, sodium persulfate was coupled to produce reductive carbon dioxide anion radical (CO_2~-), thus reducing and removing carbon tetrachloride (CT) and Cr (VI) from aqueous solution. The effect of initial concentration of sodium persulfate and formic acid and the effect of compound pollution treatment were investigated. The results showed that when the concentrations of sodium persulfate and formic acid were both 100mmol/L, CT or Cr (VI) were completely removed (50 鈩，
本文編號：2488512
[Abstract]:Using formic acid as activating agent, sodium persulfate was coupled to produce reductive carbon dioxide anion radical (CO_2~-), thus reducing and removing carbon tetrachloride (CT) and Cr (VI) from aqueous solution. The effect of initial concentration of sodium persulfate and formic acid and the effect of compound pollution treatment were investigated. The results showed that when the concentrations of sodium persulfate and formic acid were both 100mmol/L, CT or Cr (VI) were completely removed (50 鈩，
本文編號：2488512
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