CAJ | 학술논문

针对对硝基苯酚环境危害大、难生物降解的特点,为克服传统 Fenton 适用 pH 范围窄的缺点,制备了 CuO 催化剂,并对微波耦合类Fenton氧化对硝基苯酚溶液进行了实验研究,考察了H2O2投加量、催化剂投加量、微波功率、辐照时间、溶液初始pH对PNP去除效果的影响.结果表明,在 H2O2和催化剂投加量分别为0.06mol/L 和0.3g/L,微波功率125W,不调节溶液初始 pH(约为6)的条件下,初始浓度为50mg/L的PNP溶液反应6min去除率达92%, TOC去除63%.比较不同氧化体系,得到微波能够增大微波耦合类Fenton体系中?OH的生成量,从而提高对PNP的去除率.实验表明,CuO催化微波耦合类Fenton作为一种新型类Fenton反应,能克服传统Fenton适用pH范围窄的局限性,并且显著提高反应效率,拓展了Fenton反应在废水处理中的应用.
침대대초기분분배경위해대、난생물강해적특점,위극복전통 Fenton 괄용 pH 범위착적결점,제비료 CuO 최화제,병대미파우합류Fenton양화대초기분분용액진행료실험연구,고찰료H2O2투가량、최화제투가량、미파공솔、복조시간、용액초시pH대PNP거제효과적영향.결과표명,재 H2O2화최화제투가량분별위0.06mol/L 화0.3g/L,미파공솔125W,불조절용액초시 pH(약위6)적조건하,초시농도위50mg/L적PNP용액반응6min거제솔체92%, TOC거제63%.비교불동양화체계,득도미파능구증대미파우합류Fenton체계중?OH적생성량,종이제고대PNP적거제솔.실험표명,CuO최화미파우합류Fenton작위일충신형류Fenton반응,능극복전통Fenton괄용pH범위착적국한성,병차현저제고반응효솔,탁전료Fenton반응재폐수처리중적응용.
In order to avoid the narrow pH range in the traditional Fenton process, the CuO catalyst was synthesized and used in the microwave-assisted Fenton-like process to remove the p-Nitrophenol (PNP), which is harmful to the environment and difficultly biodegradable. The effects of the H2O2 dosage, CuO dosage, microwave power, irradiation time, and initial pH on the degradation of PNP were investigated in detail. The optimal values of operating parameters were found at a H2O2 concentration of 0.06mol/L, a CuO concentration of 0.3g/L, a microwave power of 125W, and a pH of about 6without adjusting the initial pH. Under the optimal conditions, the removal efficient of PNP reached 92%and the TOC removal was 63%after 6min of irradiation when the initial concentration of PNP was 50mg/L. Compared with the other oxidation processes, the microwave can enhance the ·OH production from the Fenton-like process, resulting in the improved removal efficiency of PNP. As a new kind of Fenton-like process, the microwave-assisted one using the CuO catalyst can overcome the limitation of the narrow pH range in the traditional Fenton reaction, and broaden the application of the Fenton process in wastewater treatment.