本文選題：過硫酸氫鹽 + 硫酸根自由基�。� 參考：《中國(guó)環(huán)境科學(xué)》2017年11期

【摘要】：采用蒸發(fā)誘導(dǎo)自組裝的方法制備了摻銅有序介孔碳復(fù)合催化劑(Cu-OMC),開展了Cu-OMC活化過硫酸氫鉀(PMS)氧化降解雙酚A研究.研究結(jié)果顯示,Cu-OMC可高效活化PMS進(jìn)而有效降解雙酚A,在催化劑投加量0.1g/L、PMS濃度0.5mmol/L的反應(yīng)條件下,60min內(nèi)對(duì)20mg/L的雙酚A去除率可達(dá)91%.在pH=3~11范圍內(nèi),雙酚A均可有效降解,陰離子(Cl-、SO_4~(2-)、HCO_3~-和PO_4~(3-))的存在對(duì)雙酚A降解影響較小.利用自由基猝滅實(shí)驗(yàn)和電子順磁共振(EPR)對(duì)反應(yīng)過程中產(chǎn)生的活性氧自由基(ROS)進(jìn)行了分析,結(jié)果表明除了硫酸根自由基(SO4·-)和羥基自由基(·OH),單線態(tài)氧(~1O_2)在雙酚A的降解過程中起著重要作用.
[Abstract]:Copper-doped ordered mesoporous carbon composite catalyst (Cu-OMC) was prepared by evaporation-induced self-assembly method. The oxidative degradation of bisphenol A (BPA) by Cu-OMC activated potassium persulfate (KH _ 2SO _ 4) was studied. The results show that Cu-OMC can efficiently activate PMS and effectively degrade bisphenol A. the removal rate of 20mg/L can reach 91g / L 20mg/L within 60 minutes under the condition of catalyst dosage of 0.1 g / L PMS concentration 0.5mmol/L. In the range of pH=3~11, bisphenol A can be degraded effectively, and the existence of anionic Cl-O so 4 and PO4 C 3 C have little effect on the degradation of bisphenol A. The reactive oxygen species (Ros) produced during the reaction were analyzed by free radical quenching and electron paramagnetic resonance (EPR). The results show that, in addition to sulfate radical so _ 4 ~ (-) and hydroxyl radical (O _ H _ (2)), one-line O _ (1) O _ (2) plays an important role in the degradation of bisphenol A (BPA).
【作者單位】： 河北工業(yè)大學(xué)土木與交通學(xué)院;中國(guó)科學(xué)院生態(tài)環(huán)境研究中心環(huán)境水質(zhì)學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(21377148,51222802)
【分類號(hào)】：TQ426;X703
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本文編號(hào)：1775497