更新时间:01-09 (雨橙)提供原创文章
摘要:建立了用于评价被动式空气净化产品的小型环境模拟舱系统,系统以滤纸为净化材料载体,以乙醛及丙酮为污染源,经过验证,空白实验及环境舱平行性良好。应用此环境舱评价了二氧化钛光催化剂、超支化聚酰胺PAMAM-NH2及一种市售复合型空气净化剂的净化效果。结果表明,在经过24小时净化后,二氧化钛光触媒在自然光条件下对乙醛及丙酮的净化效率为12.2%~34.5%;超支化聚酰胺对乙醛的净化效率为35.2%~48.1%,对丙酮无效果;复合型空气净化剂对乙醛及丙酮的净化效率为15.7%~32.2%。
关键词:小型环境仓 乙醛 二氧化钛光催化剂 超支化聚酰胺 复合型空气净化剂
Abstract:The small environmental test chamber was designed for Passive air purification production evaluating .the filter paper was selected as supporter and the acetaldehyde & acetone were selected as contaminants.after 24h purifying experiment the results show below: the degradation rate of TiO2 photocatalyst was between 12.2%~34.5% for acetaldehyde & acetone without UV light; PAMAM-NH2 was between 35.2%~48.1% only for acetaldehyde;the Compound air purifier agent was between 15.7%~32.2% for acetaldehyde & acetone.
Key Words:Small environmental positions Acetaldehyde Titanium dioxide photocatalyst Hyperbranched polyamide;The composite air purification agent
目前我国室内空气污染状况不容乐观,刘祥东等人报道延边地区甲醛超标率达65%[1]王琨人调查发现哈尔滨地区重新装修后的住宅甲醛超标率达到85.2%[2],在人居室内环境中,以甲醛为主的有机污染物严重危害着国人的身体健康。因此,相应的去除甲醛的技术也受到了人们的重视,其中关于被动式净化甲醛的产品的研发已多见报道,其原理多以化学吸附技术[3-5]、光催化技术[6-10]两大类为主。本实验建立了用于评价被动式空气净化产品的环境模拟舱系统,评价了实验室自制的新型净化材料,也对比的评价了较为常见的空气净化产品。与我国现有标准相比[11、12],实验建立的系统采用乙醛作为污染物指示物,且对污染源进行了改进,使污染物更为稳定的缓慢释放,利用浸渍法进行的净化材料负载也比喷涂式更为均匀,效果更为显著。