The impact of operational factors on degradation of formaldehyde as a human carcinogen using Ag3 PO4 /TiO2 photocatalyst.

IF 2.4 Q2 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH
Asghar Hadi, Aligholi Niaei, Azam Seifi, Yahya Rasoulzadeh
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引用次数: 0

Abstract

Background: The International Agency for Research on Cancer (IARC) identified formaldehyde as a carcinogen in 2004, yet formaldehyde is widely used in health care settings and various industries. In recent years, photocatalytic oxidation has been developed as a potential technique for removing pollutants arising from organic chemical agents and consequently promoting the health indices. This study investigated the effect of operational factors in optimizing formaldehyde removal from the air using Ag3 PO4 /TiO2 photocatalyst. Methods: An experimental study was designed to investigate the effect of operational factors on the efficiency of formaldehyde degradation. The variables investigated in this study include pollutant retention time, initial pollutant concentration and relative humidity. Sol-gel method was used to synthesize the nano-composite photocatalyst. An ideal experimental design was carried out based on Box-Behnken design (BBD) with response surface methodology (RSM). The sample size in this study includes all the glasses coated with Ag3 PO4 /TiO2 photocatalyst. Results: The maximum formaldehyde degradation of 32% was obtained at the initial concentration of 2 ppm, 20% relative humidity, and 90 minutes of retention time. Based on the statistical results, the correlation coefficient of the present study for the impact of operational factors on formaldehyde degradation was 0.9635, which means that there is only 3.65% probability of error in the model. Conclusion: The operational factors examined in this study (retention time, relative humidity, and initial formaldehyde concentration) were significantly influential in the degradation efficiency of formaldehyde by the photocatalyst. Due to the high exposure of employees and clients of health and treatment centers to formaldehyde as a carcinogenic substance, the results of this study can be used in ventilation systems to remove environmental pollutants in health care centers and other occupational settings.

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用ag3po4 /TiO2光催化剂研究操作因素对甲醛这一人类致癌物降解的影响。
背景:国际癌症研究机构(IARC)于2004年将甲醛确定为致癌物,但甲醛被广泛用于医疗保健机构和各种行业。近年来,光催化氧化作为一种有潜力的去除有机化学试剂中污染物、提高健康指标的技术得到了发展。研究了操作因素对ag3po4 /TiO2光催化剂去除空气中甲醛的影响。方法:通过实验研究操作因素对甲醛降解效率的影响。本研究考察的变量包括污染物滞留时间、初始污染物浓度和相对湿度。采用溶胶-凝胶法制备了纳米复合光催化剂。基于响应面法(RSM)的Box-Behnken设计(BBD)进行了理想的实验设计。本研究的样本量包括所有镀有Ag3 PO4 /TiO2光催化剂的玻璃。结果:在初始浓度为2 ppm、相对湿度为20%、保存时间为90 min时,甲醛的最大降解率为32%。由统计结果可知,本研究操作因素对甲醛降解影响的相关系数为0.9635,即模型误差概率仅为3.65%。结论:本研究考察的操作因素(停留时间、相对湿度和甲醛初始浓度)对光催化剂降解甲醛的效率有显著影响。由于健康和治疗中心的员工和客户高度暴露于甲醛这种致癌物质,本研究的结果可用于通风系统,以去除卫生保健中心和其他职业环境中的环境污染物。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Health Promotion Perspectives
Health Promotion Perspectives PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH-
CiteScore
7.10
自引率
2.30%
发文量
27
审稿时长
13 weeks
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