CAJ | 학술논문

用电子束辐射降解水中的2, 4-二氯苯酚(2, 4-DCP)和五氯苯酚(PCP), 研究辐照剂量对溶液初始质量浓度各为50 mg/L的2种氯代苯酚辐射降解和去除有机氯的影响. 同时研究了溶液不同的初始质量浓度、pH值和去氧状态等条件对辐射降解的影响. HPLC的测试结果表明: 随着辐照剂量的增加,氯代苯酚的降解率增加, 溶液中的氯离子增加, 但辐照后溶液中仍有2, 4-DCP和PCP的残余物. 试验结果表明: 有机氯辐射降解的速度要比无机氯生成的速度快得多; 溶液的去氧也能加快氯代苯酚的降解; 在酸性到中性条件下比碱性条件下更利于有机氯裂解.
용전자속복사강해수중적2, 4-이록분분(2, 4-DCP)화오록분분(PCP), 연구복조제량대용액초시질량농도각위50 mg/L적2충록대분분복사강해화거제유궤록적영향. 동시연구료용액불동적초시질량농도、pH치화거양상태등조건대복사강해적영향. HPLC적측시결과표명: 수착복조제량적증가,록대분분적강해솔증가, 용액중적록리자증가, 단복조후용액중잉유2, 4-DCP화PCP적잔여물. 시험결과표명: 유궤록복사강해적속도요비무궤록생성적속도쾌득다; 용액적거양야능가쾌록대분분적강해; 재산성도중성조건하비감성조건하경리우유궤록렬해.
Electron beam was successfully used for the degradation of 2, 4-dichlorophenol (2, 4-DCP) and pentachlorophenol(PCP)in water. The effects of radiation doses on substrate degradation and dechlorination of solutions with concentrations of 50 mg/L for both chlorophenols were investigated. The effects of initial concentration, pH and absence of oxygen on the degradation were also investigated. The concentrations of 2, 4-DCP and PCP remaining in solution after irradiation were measured by high-performance liquid chromatograph (HPLC). The results show that an increased radiation dose leads to increased degradation of the chlorophenols and increased Cl- yields. In all cases, the rate of degradation was found to be higher than the corresponding inorganic chloride yield from the parent compound. Deoxygenation was also found to increase the rate of degradation of the chlorophenols in water while degradation under alkaline condition was lower than at low to neutral pH.