發(fā)布時(shí)間：2018-04-19 08:59

  本文選題：鄰苯二甲酸二甲酯(DMP) + 微波(MW)　； 參考：《青島理工大學(xué)》2015年碩士論文

【摘要】：鄰苯二甲酸二甲酯(Dimethyl Phthalate,DMP)被廣泛地用作塑膠制品添加劑來提高塑料制品的塑性和強(qiáng)度,可擴(kuò)散到環(huán)境中造成對(duì)水環(huán)境、大氣環(huán)境及土壤的污染。此外研究表明,DMP是一種重要的內(nèi)分泌干擾素,可以導(dǎo)致機(jī)體生殖系統(tǒng)異常,免疫機(jī)能下降,引發(fā)癌癥等環(huán)境疾病�；诖�,本課題開展微波協(xié)同F(xiàn)enton試劑氧化降解DMP及協(xié)同機(jī)理的研究。首先研究了微波降解DMP反應(yīng),然后研究了Fenton降解DMP反應(yīng),考察了Fe2+濃度、Fe2+與H2O2投量比、反應(yīng)液初始p H、Fenton試劑投加量以及DMP初始濃度對(duì)Fenton試劑降解DMP效率的影響.并簡要分析了Fenton/類Fenton體系在UV作用下對(duì)DMP的降解效果,最后以一級(jí)反應(yīng)動(dòng)力學(xué)模型建立Fenton降解DMP表觀動(dòng)力學(xué)方程。最后研究了微波協(xié)同F(xiàn)enton降解DMP反應(yīng),考察了Fe2+濃度、H2O2濃度、反應(yīng)液p H、DMP初始濃度及微波功率對(duì)DMP降解效率的影響,在此基礎(chǔ)上分別引入Fe2+、Cu2+等重金屬離子對(duì)比性分析了微波-Fenton試劑對(duì)DMP的降解效率。通過體系中Fe2+、H2O2濃度及p H變化分析了微波-Fenton協(xié)同作用機(jī)理,根據(jù)DMP降解色譜圖對(duì)降解過程也做了探索性研究。結(jié)果表明,當(dāng)DMP初始濃度為2 mg/L、Fe2+濃度為2.5 mg/L、Fe2+與H2O2投量比為1:10、溶液初始p H為3、反應(yīng)30 min,Fenton試劑降解DMP的效率可達(dá)96.08%。Fenton/類Fenton體系在UV作用下降解DMP效率較無UV作用相比提高率超過30%。Fenton降解DMP反應(yīng)表觀動(dòng)力學(xué)方程為lnc0/c=f(c0,n,p H)=2.068c0-0.7928n-1.4157(p H)0.6336,同時(shí)結(jié)果表明,當(dāng)Fe2+濃度為2 mg/L、H2O2濃度20 mg/L、反應(yīng)液初始p H為3、微波功率為385 W、DMP初始濃度為1mg/L、反應(yīng)30 min時(shí),微波-Fenton降解DMP效率可達(dá)96.21%;降解反應(yīng)較好的遵循一級(jí)反應(yīng)動(dòng)力學(xué)方程;微波場中Fe2+與Fe3+間的快速循環(huán)是微波協(xié)同F(xiàn)enton降解DMP的主要原因。
[Abstract]:Dimethyl dimethyl phthalate (Dimethyl Phthalate DMP) is widely used as a plastic additive to improve the plasticity and strength of plastic products, which can spread to the environment and cause pollution to water environment, atmosphere environment and soil.In addition, DMP is an important endocrine interferon, which can lead to abnormal reproductive system, decreased immune function and lead to cancer and other environmental diseases.Based on this, microwave synergistic Fenton reagent oxidation degradation of DMP and synergistic mechanism were carried out.The microwave degradation of DMP was studied, then the degradation of DMP by Fenton was studied. The effects of the ratio of Fe2 concentration of Fe _ 2 to H2O2, the initial dosage of p-H _ (+) Fenton reagent and the initial concentration of DMP on the DMP degradation efficiency of Fenton reagent were investigated.The degradation effect of Fenton/ Fenton system on DMP under UV irradiation was briefly analyzed. Finally, the apparent kinetics equation of Fenton degradation of DMP was established by the first-order reaction kinetics model.Finally, the effects of microwave and Fenton on the degradation of DMP were studied. The effects of Fe2 concentration and H2O2 concentration, initial concentration of reaction solution and microwave power on the degradation efficiency of DMP were investigated.On this basis, the degradation efficiency of DMP by microwave-Fenton reagent was analyzed by introducing heavy metal ions such as Fe2 and Cu2 respectively.The synergistic mechanism of microwave-Fenton was analyzed by the concentration of Fe2 and H _ 2O _ 2 in the system and the degradation process was also studied according to the DMP degradation chromatogram.The results show thatWhen the initial concentration of DMP is 2 mg / L Fenton 2, the ratio of Fe 2 to H2O2 is 1: 10, and the initial pH of solution is 3, the efficiency of DMP degradation by Fenton reagent in 30 min reaction is higher than that of DMP degradation in 96.08%.Fenton/ Fenton system under UV irradiation.The apparent kinetic equation of 30%.Fenton degradation of DMP is lnc0 / cnc0 / H)=2.068c0-0.7928n-1.4157(p H ~ (0.6336), and the results show that,When the concentration of Fe2 is 20 mg / L, the initial pH of the reaction solution is 3, the microwave power is 385W / L, the initial concentration of DMP is 1 mg / L, and the reaction time is 30 min, the degradation efficiency of DMP by microwave Fenton can reach 96.21g / L, and the degradation reaction follows the first order reaction kinetics equation.The rapid cycle between Fe2 and Fe3 in microwave field is the main reason for DMP degradation by microwave synergistic Fenton.
【學(xué)位授予單位】：青島理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X505

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