Plants and Environmental Quality Research Group, School of Life Sciences, Faculty of Science, University of Technology Sydney, Australia; Environment and Planning, Aurecon, Australia.
Plants and Environmental Quality Research Group, School of Life Sciences, Faculty of Science, University of Technology Sydney, Australia.
Chemosphere. 2022 May;295:133942. doi: 10.1016/j.chemosphere.2022.133942. Epub 2022 Feb 9.
Despite the growing use of control measures, environmental tobacco smoke (ETS) remains a significant pollutant source in indoor air in many areas of the world. Current control methods for reducing ETS exposure are inadequate to protect public health in environments where cigarettes are smoked. An alternative solution is botanical biofiltration which has previously been shown to lower concentrations of volatile organic compounds (VOCs) and particulate matter (PM) from a range of polluted air streams. This study is the first to assess the potential of a botanical biofilter with the species Spathiphyllum wallisii (Peace Lily) for the removal of cigarette-derived VOCs and all size fractions of PM. Single pass removal efficiencies of 43.26% for total VOCs and 34.37% for total suspended particles were achieved. The botanical biofilter reduced the concentrations of a range of harmful ETS chemicals including nicotine, limonene, and toluene. Evaluation of the re-emission of ETS constituents filtered by the botanical biofilter revealed no particle resuspension or off gassing. The results demonstrate the potential of botanical biofilters to reduce public ETS exposure, although further research is needed to improve upon and ensure the efficiency of these systems for practical applications.
尽管控制措施不断增加，但在世界许多地区，环境烟草烟雾（ETS）仍然是室内空气中的一个重要污染源。目前减少 ETS 暴露的控制方法不足以在吸烟环境中保护公众健康。一种替代方法是植物生物过滤，它以前已被证明可以降低来自各种污染空气流的挥发性有机化合物 (VOC) 和颗粒物 (PM) 的浓度。这项研究首次评估了具有物种 Spathiphyllum wallisii（和平百合）的植物生物过滤器去除香烟衍生的 VOC 和所有 PM 粒径的潜力。总 VOC 的单次通过去除效率达到 43.26%，总悬浮颗粒物的去除效率达到 34.37%。植物生物过滤器降低了一系列有害 ETS 化学物质的浓度，包括尼古丁、柠檬烯和甲苯。对植物生物过滤器过滤的 ETS 成分的再排放进行评估，发现没有颗粒再悬浮或脱气。结果表明，植物生物过滤器有可能减少公众 ETS 暴露，但需要进一步研究以提高和确保这些系统在实际应用中的效率。
