RESUMO
In this study, Mn-Ce-Ox/γ-Al2O3 supported catalysts were adopted to promote the removal efficiency of aniline in simulated wastewater with ozone. Mn-Ce-Ox/γ-Al2O3 catalysts were prepared by the impregnation-calcination method. Its phase structure, specific surface area, loading amount and distribution of active units were analyzed by XRD, BET, ICP-AES and TEM/SEM respectively. The characterization results demonstrated that the catalysts had a good dispersion of Mn-Ce-Ox active sites and an abundant porous structure from the γ-Al2O3 support. The catalytic ozonation results showed that with Mn3-Ce1-Ox/γ-Al2O3(1.0), the aniline removal efficiency was highly improved, 15.0% higher than that of ozonation without a catalyst. Furthermore, from the variation in loading amounts of Mn and Ce, it can be seen that the molar ratio of Mn and Ce within the Mn-Ce-Ox plays a key role in accelerating the ozonation of aniline in simulated wastewater with ozone, while Mn:Ce = 1.9:1 showed the best performance. More importantly, the catalysts showed high recycling performance and could be reused at least 12 times without obvious loss of activity.
Assuntos
Óxido de Alumínio/química , Compostos de Anilina , Cério/química , Manganês/química , Ozônio/química , Compostos de Anilina/análise , Compostos de Anilina/química , Compostos de Anilina/isolamento & purificação , Catálise , Águas Residuárias/química , Purificação da ÁguaRESUMO
PURPOSE: This qualitative study aimed to deeply understand the current experience of fertility information support for young breast cancer patients and to provide further evidence supporting the development of a fertility information support project. METHODS: Using purposive sampling, 18 young breast cancer patients were selected for in-depth interviews from June to September 2022. Colaizzi's seven step analysis method and NVivo software were used to analyze and organize the interview data. RESULTS: Three themes and 10 subthemes were summarized from the interview data: Information anxiety (strong information demand, insufficient information support, information explosion, and information security); reproductive concerns (desire for fertility, anxiety about their children's health, denial of one's health, multiple burdens of emotional interweaving); and family support (the importance of good family relations, the need for a positive marital relationship). CONCLUSIONS: Medical staff should realize the importance of information support for young breast cancer patients and correctly identify the obstacles to insufficient information support. By establishing a fertility information support program, patients' awareness and the quality of fertility information support can be improved to reduce fertility anxiety in breast cancer patients.