| Title: | Removal of a complex VOC mixture by potted plants-effects on soil microorganisms |
| Author(s): | Dela Cruz M; Svenningsen NB; Nybroe O; Muller R; Christensen JH; |
| Address: | "Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C., Denmark. mjha@plen.ku.dk. Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C., Denmark. Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Hojbakkegaard Alle 30, 2630, Taastrup, Denmark" |
| Journal Title: | Environ Sci Pollut Res Int |
| DOI: | 10.1007/s11356-023-26137-8 |
| ISSN/ISBN: | 1614-7499 (Electronic) 0944-1344 (Linking) |
| Abstract: | "Microorganisms in the soil of potted plants are important for removal of volatile organic compounds (VOCs) from indoor air, but little is known about the subject. The aim of this study was therefore to obtain a better understanding of the effect of VOCs on the microbial community in potted plants. Hedera helix was exposed to gasoline vapors under dynamic chamber conditions for 21 days and three main parameters were investigated. These were (1) removal of the target compounds heptane, 3-methylhexane, benzene, toluene, ethylbenzene, m,p-xylene, and naphthalene from the gasoline mixture; (2) toluene mineralization; and (3) bacterial abundance and bacterial community structure. H. helix was able to reduce the concentration of the target compounds in the continuously emitted gasoline by 25-32%, except for naphthalene, which was too low in concentration. The soil microcosm of gasoline exposed plants had for an initial 66 h increased toluene mineralization rate compared to the soil microcosm in the soil of plants exposed to clean air. Bacterial abundance was decreased in response to gasoline exposure while bacterial community structure was changed. The change in bacterial community structure was, however, different between the two experiments indicating that several taxonomic units can degrade gasoline components. Especially the genera Rhodanobacter and Pseudonorcardia significantly increased in abundance in response to gasoline vapors. Bauldia, Devosia, and Bradyrhizobium, on the other hand, decreased" |
| Keywords: | Gasoline/analysis *Air Pollutants/analysis Soil/chemistry *Volatile Organic Compounds/analysis Toluene/analysis Plants/metabolism Gases Naphthalenes Bacterial abundance Bacterial community structure Indoor air Phytoremediation Toluene mineralization Volat; |
| Notes: | "MedlineDela Cruz, Majbrit Svenningsen, Nanna B Nybroe, Ole Muller, Renate Christensen, Jan H eng Germany 2023/03/09 Environ Sci Pollut Res Int. 2023 Apr; 30(19):55372-55381. doi: 10.1007/s11356-023-26137-8. Epub 2023 Mar 9" |
