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Książek-Trela P, Figura D, Węzka D, Szpyrka E. Degradation of a mixture of 13 polycyclic aromatic hydrocarbons by commercial effective microorganisms. Open Life Sci 2024; 19:20220831. [PMID: 38415204 PMCID: PMC10898624 DOI: 10.1515/biol-2022-0831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/27/2023] [Accepted: 01/02/2024] [Indexed: 02/29/2024] Open
Abstract
The study focused on the contribution of effective microorganisms (EM) and their consortia, used in commercial biological preparations and formulations for soil revitalization, to the degradation of a mixture of 13 polycyclic aromatic hydrocarbons (PAHs) commonly found in the soil environment. PAHs, diverse forms of which are present in the environment, never occur individually but always as a part of a chemical mixture. Therefore, the research presented in this article, focusing on the EM impact on the mixture of PAHs, reflects the conditions most similar to natural ones. On Day 35 of the experiment, PAH levels decreased by 75.5-95.5%. The highest PAHs degradation efficiency was achieved for fluorene, with a preparation containing eight bacteria strains from the Bacillus genus: B. coagulans, B. amyloliquefaciens, B. laterosporus, B. licheniformis, B. mucilaginosus, B. megaterium, B. polymyxa, and B. pumilus. All tested preparations containing bacterial consortia and a preparation with the yeast S. cerevisiae intensified the PAHs degradation more effectively than formulations including only the yeast Yarrowia lipolytica or a mixture of Debaryomyces hansenii and Bacillus. The designed and proposed research will contribute to the development of biotechnological methods - bioremediation by microorganisms that are safe for the human and environment health.
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Affiliation(s)
- Paulina Książek-Trela
- Department of Biotechnology, Institute of Biotechnology, University of Rzeszow 1 Pigonia St., 35-310 Rzeszow, Poland
| | - Damian Figura
- Department of Biotechnology, Institute of Biotechnology, University of Rzeszow 1 Pigonia St., 35-310 Rzeszow, Poland
| | - Dominika Węzka
- Department of Biotechnology, Institute of Biotechnology, University of Rzeszow 1 Pigonia St., 35-310 Rzeszow, Poland
| | - Ewa Szpyrka
- Department of Biotechnology, Institute of Biotechnology, University of Rzeszow 1 Pigonia St., 35-310 Rzeszow, Poland
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Li B, Zhao L, Zhong S, An R, Ma R, Xu X, Chen Q. Occurrence, distribution and risk assessment of polycyclic aromatic hydrocarbons in soils around main water source areas of Beijing, China. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2023; 45:7569-7584. [PMID: 37391576 DOI: 10.1007/s10653-023-01673-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 06/20/2023] [Indexed: 07/02/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) in urban environments have been globally concerned due to their significant health impacts on residents. However, little is known about potential risks of PAHs from centralized water source areas. In the present study, 326 soils samples from the main water source areas of Beijing were collected and the occurrence, source appointment, and risks of PAHs were systematically investigated based on the monitoring results from high-performance liquid chromatography (HPLC). The total PAHs (∑16 PAHs) concentrations ranged from 5.70 to 1512 ng/g with median value of 44.2 ng/g, in which 4-ring and 5-ring groups were the major components. PAHs concentrations in the cultivated land were significantly higher than other areas, which could reflect significant impact of soil organic matter and total nitrogen contents on the spatial variations of PAHs. Further source identifications through positive matrix factorization model (PMF) revealed that biomass (22.5%), coal (21.4%), gasoline (17.6%) and diesel (16.4%) combustion were dominant sources of soil PAHs in the study area. Moreover, the risk assessment indicated that total ecological and health risk of PAHs were negligible, but individual PAH, including pyrene and benzo(b)fluoranthene, should be concerned due to their potential risks in several monitored stations located in the secondary protection area of four reservoirs. Our study provided new insights into environmental risks of soils in main water source areas from PAHs and could be helpful for organic micropollutant controlling and drinking water safety in rapidly urbanizing cities.
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Affiliation(s)
- Bin Li
- Department of Environmental Engineering, Peking University, Beijing, 100871, People's Republic of China
- Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing, 100871, People's Republic of China
| | - Liang Zhao
- Beijing Water Authority, Beijing, 100036, People's Republic of China
| | - Sining Zhong
- Fujian Provincial Key Laboratory of Soil Environment Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Rui An
- Department of Environmental Engineering, Peking University, Beijing, 100871, People's Republic of China
- Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing, 100871, People's Republic of China
| | - Ruoqi Ma
- General Institute of Water Resources and Hydropower Planning and Design, Ministry of Water Resources, Beijing, 100120, People's Republic of China
| | - Xuming Xu
- Department of Environmental Engineering, Peking University, Beijing, 100871, People's Republic of China
- Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing, 100871, People's Republic of China
| | - Qian Chen
- Department of Environmental Engineering, Peking University, Beijing, 100871, People's Republic of China.
- Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing, 100871, People's Republic of China.
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