本文選題：高級氧化 + 環(huán)境內(nèi)分泌干擾物　； 參考：《上海應用技術(shù)大學》2016年碩士論文

【摘要】：鄰苯二甲酸酯(phthalic acid esters,PAEs)作為一類環(huán)境內(nèi)分泌干擾物,其水環(huán)境污染問題一直備受人們關(guān)注。本論文選擇鄰苯二甲酸二乙酯(DEP)為模型PAEs,采用電化學與臭氧聯(lián)用技術(shù)降解礦化DEP,研究其中降解動力學過程及機理。實驗主要在自制電化學反應器中進行,由臭氧發(fā)生器產(chǎn)生的氧氣和臭氧的氣體混合物持續(xù)鼓入反應液。實驗中陽極均為鉑(Pt)電極,陰極則分別采用碳氈電極(carbon felt)、網(wǎng)狀玻碳電極(RVC)、自制的碳-聚四氟乙烯(carbon-PTFE)電極,研究了三種不同陰極材料對電化學與臭氧聯(lián)用技術(shù)降解礦化DEP過程的影響,分析了三種不同陰極材料在降解DEP體系中的壽命穩(wěn)定性,實驗結(jié)果表明三種不同陰極材料均可以有效地將反應體系中的氧氣在陰極轉(zhuǎn)化成過氧化氫,這種原位產(chǎn)生的過氧化氫可與反應體系中的臭氧發(fā)生反應,產(chǎn)生具有強氧化活性的羥基自由基(·OH),可有效降解礦化DEP。與其他兩種陰極材料相比,采用自制的carbon-PTFE電極的體系,DEP的降解礦化效果最好,反應1小時后總有機碳(TOC)的去除率達91.8%；通過實驗研究還發(fā)現(xiàn),自制carbon-PTFE電極呈現(xiàn)出非常好的壽命穩(wěn)定性�？傮w來看,自制carbon-PTFE電極在電化學與臭氧聯(lián)用技術(shù)處理鄰苯二甲酸酯(PAEs)類廢水的應用中具有很好的電化學活性和穩(wěn)定性。本論文還利用高效液相色譜等大型儀器分析測試手段對DEP降解過程中的中間產(chǎn)物進行了定性及定量分析,進而深入分析了電化學與臭氧聯(lián)用技術(shù)降解礦化DEP的可能機理。本論文的研究結(jié)果可為電化學與臭氧聯(lián)用技術(shù)處理水環(huán)境鄰苯二甲酸酯類污染物提供重要的理論和技術(shù)參考。
[Abstract]:As a class of environmental endocrine disruptors, phthalic acid estersof phthalic acid (PAEs) has attracted much attention for its water pollution. In this paper, DEP (diethyl phthalate) was selected as the model, and the degradation kinetics and mechanism of DEP were studied by electrochemical and ozonation techniques. The experiment was carried out in a self-made electrochemical reactor. The mixture of oxygen and ozone produced by the ozone generator was continuously pumped into the reaction solution. In the experiment, the anodes were all platinum-carbon (Pt) electrodes, the cathodes were carbon felt electrodes (carbon feltines) and reticular glassy carbon electrodes (RVC-), carbon-PTFEs (carbon-PTFEs) electrodes were prepared by ourselves. The effects of three kinds of cathode materials on the degradation of mineralized DEP by electrochemical and ozone combined technology were studied. The lifetime stability of three different cathode materials in DEP degradation system was analyzed. The experimental results show that all three kinds of cathode materials can effectively convert oxygen in the reaction system into hydrogen peroxide at the cathode, and the hydrogen peroxide produced in situ can react with ozone in the reaction system. Hydroxyl radical (OHN) with strong oxidizing activity can effectively degrade mineralized DEP. Compared with the other two kinds of cathode materials, the system using self-made carbon-PTFE electrode has the best degradation and mineralization effect, and the removal rate of total organic carbon (TOC) is 91.8% after 1 hour reaction. The self-made carbon-PTFE electrode shows very good life stability. In general, the self-made carbon-PTFE electrode has good electrochemical activity and stability in the treatment of phthalate (PAEs) wastewater by the combined use of ozone and electrochemical technology. In this paper, the intermediate products in the degradation of DEP were qualitatively and quantitatively analyzed by means of high performance liquid chromatography (HPLC) and other large-scale instruments, and the possible mechanism of degradation of mineralized DEP by the combination of electrochemical and ozone techniques was analyzed. The results of this paper can provide an important theoretical and technical reference for the treatment of phthalic acid esters in water environment by the combination of electrochemical and ozone technologies.
【學位授予單位】：上海應用技術(shù)大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：X703;O657.1
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本文編號：1935771