Yanpeng Li

Area of research

Health, Toxicology and Mutagenesis · Atmospheric Science

Research interest

Research topics from publications: Characteristics of bacterial and fungal aerosols during the autumn haze days in Xi'an, China; Concentrations and size distributions of viable bioaerosols under various weather conditions in a typical semi-arid city of Northwest China; Characteristics of total airborne microbes at various air quality levels; Bacterial community structure in atmospheric particulate matters of different sizes during the haze days in Xi'an, China; Characteristics of ambient bioaerosols during haze episodes in China: A review; The impact of seasonal variations about temperature and photoperiod on the treatment of municipal wastewater by algae-bacteria system in lab-scale; Characteristics of airborne opportunistic pathogenic bacteria during autumn and winter in Xi'an, China; Temporal-spatial variations of fungal composition in PM2.5 and source tracking of airborne fungi in mountainous and urban regions; Mixotrophic cultivation of microalgae to enhance the biomass and lipid production with synergistic effect of red light and phytohormone IAA; Dispersion and Risk Assessment of Bacterial Aerosols Emitted from Rotating-Brush Aerator during Summer in a Wastewater Treatment Plant of Xi’an, China. Representative work: A microbial risk assessment was carried out for the rotating-brush aerator used during summer in a wastewater treatment plant (WWTP) of Xi’an, China. Bacterial aerosols were first collected by an Andersen cascade impactor at selected sampling sites near the rotating-brush aerator. The concentrations of airborne bacteria were used to obtain microbial emission rate by back calculation. The downwind concentrations of airborne bacteria were then calculated by a modified Gaussian dispersion model accounting for environmental impact and microorganism decay. Subsequently, the exposure parameters suitable for Chinese people were incorporated into a risk assessment model to evaluate non-carcinogenic .Pseudomonas aeruginosa DN1, isolated from petroleum-contaminated soil, showed excellent degradation ability towards diverse polycyclic aromatic hydrocarbons (PAHs). Many studies have been done to improve its degradation ability. However, the molecular mechanisms of PAHs degradation in DN1 strain are unclear. In this study, the whole genome of DN1 strain was sequenced and analyzed. Its genome contains 6,641,902 bp and encodes 6,684 putative open readin