本文關(guān)鍵詞： 臭氧 羥胺 鄰苯二甲酸二甲酯 羥基自由基 降解　出處：《四川大學(xué)學(xué)報(bào)(工程科學(xué)版)》2016年S1期 　論文類型：期刊論文

【摘要】：利用硫酸羥胺(HAS)催化O3降解含有鄰苯二甲酸甲酯(DMP)的模擬廢水,比較O3/HAS體系和O3體系中DMP的降解情況,研究叔丁醇(TBA)和p H值對O3/HAS體系中O3分解的影響。結(jié)果表明:當(dāng)p H=3.0且HAS初始濃度為20μmol/L時(shí),反應(yīng)5 min后O3/HAS體系中DMP的降解率比O3體系中提高了82.58%,表明O3/HAS體系降解DMP的效率優(yōu)于單獨(dú)O3體系;加入TBA后O3/HAS體系對DMP的降解率顯著下降,證明在O3/HAS體系中產(chǎn)生了·OH;在p H值為3.0、7.0和9.2的條件下,O3的降解率均隨著HAS濃度的升高而升高,說明HAS促進(jìn)了O3的分解。此外,選擇鹽酸羥胺(HAC)、磷酸羥胺(HAP)催化O3降解DMP,將O3/HAS體系、O3/HAC體系、O3/HAP體系中DMP的去除效果進(jìn)行對比,結(jié)果顯示3種體系均可促進(jìn)DMP的降解。
[Abstract]:The degradation of DMP in O _ 3 / has system and O _ 3 / O _ 3 system was compared by using hydroxylamine sulfate (HAS-HAS) to catalyze the degradation of simulated wastewater containing methyl phthalate (DMP). The effects of TBA) and pH on the decomposition of O _ 3 in O _ 3 / has system were studied. The results showed that the initial concentration of HAS was 20 渭 mol/L when pH was 3.0. The degradation rate of DMP in O _ 3 / has system was 82.58% higher than that in O _ 3 system after 5 min reaction, which indicated that the DMP degradation efficiency of O _ 3 / has system was better than that of O _ 3 system, and the degradation rate of DMP in O _ 3 / has system was significantly lower than that in O _ 3 / has system. It was proved that 路OH was produced in the system of O _ 3 / has, and the degradation rate of O _ 3 increased with the increase of HAS concentration under pH values of 3.0 ~ 7.0 and 9.2, which indicated that HAS promoted the decomposition of O _ 3. Hydroxylamine hydrochloride (HAC) and hydroxylamine phosphate (HAP) were used to catalyze the degradation of DMP in O _ 3 / HAC system. The results showed that the three systems could promote the degradation of DMP in the system of O _ 3 / HAC / O _ 3 / HAP.
【作者單位】： 四川大學(xué)建筑與環(huán)境學(xué)院;
【基金】：教育部創(chuàng)新團(tuán)隊(duì)資助項(xiàng)目(ITR1027) 四川省環(huán)�？萍加�(jì)劃資助項(xiàng)目(2013HB08)
【分類號】：X703
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本文編號：1538961