Improving the Efficiency of the Indoor Air Purification from Formaldehyde by Plants Colonized by Endophytic Bacteria Ochrobactrum sp.

Abstract The endophytic bacteria can be in symbiosis with host plants, owing to the natural stability advantages degrading pollutants. To explore technological feasibility of this method for indoor formaldehyde removal, a system combining and plants was established. In present study, highly efficient formaldehyde-degrading Ochrobactrum intermedium , named strain ZH-1, successfully induced antibiotics (rifampicin) an antibiotic-labeled ZH-1 R without microbial variation. then used colonization Epipremnum aureum Chlorophytum comosum f. variegate by three inoculation methods: root irrigation (RI), acupuncture injury stem (AS), leaves (AL). results demonstrated that (AS) most effective inoculating plants. Conversely, (RI) yielded best highlighting importance usage optimal plant specific ensuring highest possible performance characteristics biological system. 8-day dynamic fumigation experiment removal efficiency variegata inoculated significantly higher than one non-inoculated average increase 20.17% observed during daytime, while much more significant improvement 62.88% achieved at night. This implied could not only effectively improve formaldehyde, but also increased resistance not-native toxicity, suggesting its potential integrated which provides new path economical approach radically air quality, especially nighttime.