本文選題：輻照　切入點(diǎn)：磺胺二甲基嘧啶(SMT)　出處：《中國環(huán)境科學(xué)》2017年01期 　論文類型：期刊論文

【摘要】：以典型磺胺類抗生素磺胺二甲基嘧啶(SMT)為研究對(duì)象,利用電離輻照技術(shù)對(duì)其進(jìn)行降解,去除效果良好,采用理論分析與實(shí)驗(yàn)驗(yàn)證相結(jié)合的方法,揭示了SMT輻照降解特性.通過色譜和化學(xué)分析原理,探討了輻照降解中間產(chǎn)物及其變化規(guī)律.進(jìn)行了污染物初始濃度,初始pH值,氣體曝氣及自由基消除劑等影響因素實(shí)驗(yàn),分析各因素下SMT降解規(guī)律和特性.結(jié)果顯示,較低的污染物濃度,偏中性的環(huán)境,較高的溶解氧含量有利于污染物的降解和礦化.自由基消除劑的加入可極大抑制反應(yīng)進(jìn)行,揭示了在SMT輻照降解過程中·OH發(fā)揮主導(dǎo)作用,正丁醇的抑制效果遠(yuǎn)好于HCO_3-.在實(shí)際水處理中,通過適當(dāng)調(diào)整溶液濃度,調(diào)節(jié)pH值,增加曝氣量可有效提高磺胺類抗生素的輻照降解效率.
[Abstract]:The typical sulfanilamide antibiotic sulfamethylpyrimidine (SMTT) was used to degrade it by ionizing irradiation, and the removal effect was good. The method of combining theoretical analysis with experimental verification was used to study the degradation of sulfadimethylpyrimidine (SMTT). The characteristics of irradiation degradation of SMT were revealed. By means of chromatographic and chemical analysis, the intermediate products of irradiation degradation and their changing rules were discussed. The influence factors such as initial concentration of pollutants, initial pH value, gas aeration and radical scavenger were tested. The results showed that low pollutant concentration, neutral environment and high dissolved oxygen content were beneficial to the degradation and mineralization of SMT. The addition of free radical scavenger could greatly inhibit the reaction. It is revealed that 路OH plays a leading role in the degradation of SMT by irradiation, and the inhibition effect of n-butanol is much better than that of HCO _ 3-. in actual water treatment, the pH value is adjusted by adjusting the concentration of solution. The irradiation degradation efficiency of sulfanilamide antibiotics can be improved by increasing aeration rate.
【作者單位】： 北京工業(yè)大學(xué)建筑工程學(xué)院;清華大學(xué)核能與新能源技術(shù)研究院環(huán)境技術(shù)研究室;
【基金】：國家自然科學(xué)基金青年科學(xué)基金(51508007) 北京市博士后基金(2015ZZ-07)
【分類號(hào)】：X703

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 陳偉;陳曉e，

本文編號(hào)：1575552