Department of Civil Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada.
Department of Civil Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada.
Water Res. 2017 Nov 15;125:325-331. doi: 10.1016/j.watres.2017.07.042. Epub 2017 Aug 21.
This study investigates the degradation of sulfolane in aqueous system by (NH)SO/UVC and (NH)SO/O/UVC. While bubbling O significantly decreased the reaction time, the experimental results in both cases were consistent: firstly, the degradation of sulfolane followed pseudo-first order kinetic models, secondly, the reaction rates were affected by persulfate dosages, UV light intensity, initial pH and concentration of carbonate/bicarbonate present. Low concentration of chloride (less then 100 ppm) had no effect on the reaction rate. Application of (NH)SO/O/UVA for degradation of sulfolane was also investigated. It was found that for higher sulfolane degradation kinetics, higher concentrations of persulfate was required under UVA irradiation. Finally, (NH)SO/UVC was evaluated for its applicability for degradation of sulfolane in groundwater samples.
本研究通过（NH）SO/UVC 和（NH）SO/O/UVC 两种途径考察了水溶液中环丁砜的降解情况。尽管曝气 O2 显著缩短了反应时间，但两种情况下的实验结果均一致：首先，环丁砜的降解符合假一级动力学模型；其次，反应速率受过硫酸盐剂量、UV 光强度、初始 pH 值和存在的碳酸盐/碳酸氢盐浓度的影响。低浓度的氯离子（低于 100ppm）对反应速率没有影响。还考察了（NH）SO/O/UVA 用于降解环丁砜的应用。结果发现，在 UVA 照射下，要获得更高的环丁砜降解动力学，需要更高浓度的过硫酸盐。最后，评估了（NH）SO/UVC 用于降解地下水样品中环丁砜的适用性。
