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Li Y, Zheng B, Yang Y, Chen K, Chen X, Huang X, Wang X. Soil microbial ecological effect of shale gas oil-based drilling cuttings pyrolysis residue used as soil covering material. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129231. [PMID: 35739751 DOI: 10.1016/j.jhazmat.2022.129231] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/13/2022] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
The residue derived from oil-based drilling cutting pyrolysis could be used as paving materials. Some petroleum hydrocarbons remain in the residue after pyrolysis and cause severe environmental pollution. In this study, the soil column leaching experiments were carried out under different leaching amounts, and the vertical migration characteristics of petroleum hydrocarbons in soil and the dynamic response mechanism of microorganisms to petroleum hydrocarbons were analyzed. The result showed that the soil pH value and water content with different leaching amounts did not differ significantly, but the vertical migration ability of each petroleum hydrocarbon component was different. In petroleum hydrocarbon contaminated soil, the relative abundance of Proteobacteria maintained a high level (23.6%-60.7%). At the genus level, the relative abundance of Massilia decreased with the leaching amount increased. According to PICRUSt, Monooxygenase [EC: 1.14.13.-] played a significant role in petroleum hydrocarbon degradation. While Long-chain-fatty-acid-CoA ligase [EC: 6.2.1.3] had the highest relative abundance. By studying the influence of shale gas oil-based drilling cuttings pyrolysis residue on soil physical and chemical properties and soil microorganisms, this work provides scientific ecological assessment for the resource application of pyrolysis residue.
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Affiliation(s)
- Yuting Li
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Baiping Zheng
- Chongqing Environment & Sanitation Group, Chongqing 401121, China
| | - Yinghuan Yang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Kejin Chen
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Xiangle Chen
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Xin Huang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Xiang Wang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Environment and Ecology, Chongqing University, Chongqing 400044, China.
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2
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Uribe-Flores MM, García-Cruz U, Hernández-Nuñez E, Cerqueda-García D, Aguirre-Macedo ML, García-Maldonado JQ. Assessing the Effect of Chemical Dispersant Nokomis 3-F4 on the Degradation of a Heavy Crude Oil in Water by a Marine Microbial Consortium. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 108:93-98. [PMID: 33954861 DOI: 10.1007/s00128-021-03247-y] [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: 08/12/2020] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
Degradation efficiency of a heavy crude oil by a marine microbial consortium was evaluated in this study, with and without the addition of a chemical dispersant (Nokomis 3-F4). 15.50% of total petroleum hydrocarbons (TPH) were removed after 15 days of incubation without dispersant, with a degradation rate of 2.39 ± 0.22 mg L-1 day-1. In contrast, the addition of Nokomis 3-F4 increased TPH degradation up to 30.81% with a degradation rate of 5.07 ± 0.37 mg L-1 day-1. 16S rRNA gene sequencing indicated a dominance of the consortium by Achromobacter and Alcanivorax. Nonetheless, significant increases in the relative abundance of Martelella and Ochrobactrum were observed with the addition of Nokomis 3-F4. These results will contribute to further environmental studies of the Gulf of Mexico, where Nokomis 3-F4 can be used as chemical dispersant.
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Affiliation(s)
- María Magdalena Uribe-Flores
- Departamento de Recursos del Mar, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV) Unidad Mérida, Mérida, Mexico
| | - Ulises García-Cruz
- Consorcio de Investigación del Golfo de México (CIGoM), Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV) Unidad Mérida, Mérida, Mexico
| | - Emanuel Hernández-Nuñez
- CONACYT - Departamento de Recursos del Mar, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV) Unidad Mérida, Mérida, Mexico
| | - Daniel Cerqueda-García
- Consorcio de Investigación del Golfo de México (CIGoM), Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV) Unidad Mérida, Mérida, Mexico
| | - M Leopoldina Aguirre-Macedo
- Departamento de Recursos del Mar, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV) Unidad Mérida, Mérida, Mexico.
| | - José Q García-Maldonado
- CONACYT - Departamento de Recursos del Mar, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV) Unidad Mérida, Mérida, Mexico.
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3
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Zhang M, Guo P, Wu B, Guo S. Change in soil ion content and soil water-holding capacity during electro-bioremediation of petroleum contaminated saline soil. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:122003. [PMID: 31901846 DOI: 10.1016/j.jhazmat.2019.122003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/14/2019] [Accepted: 12/30/2019] [Indexed: 06/10/2023]
Abstract
This study investigated changes in soil ion content and soil water-holding capacity during electro-bioremediation (EK-Bio) of petroleum contaminated saline soil (ion content of 3.92 g/kg). The results indicated that the soil ions surrounded the electrodes with increasing time, thus changing the soil water-holding capacity. According to the Van Genuchten model fitting results, the soil residual water content (θr) increased with the soil ion content, which represented a capacity decrease of the soil water supply. At the end of the EK-Bio experiment, the θr values in the soil near (site A) and far from (site B) the electrodes were 19.1 % and 12.1 %, where the soil ion content was 7.92 g/kg and 0.55 g/kg, respectively. The ion aggregation process significantly impacted the growth of soil microbial. The bacteria numbers decreased when the soil ion content was high (7.41 g/kg, site A) and low (0.84 g/kg, site B) after 70 days of treatment. The applied electric field significantly enhanced the bioremediation efficiency. However, the biodegradation promotion effect was the weakest at site A. The synergistic effect between the applied electric field and degrading bacteria was delayed.
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Affiliation(s)
- Meng Zhang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China; National-Local Joint Engineering Laboratory of Contaminated Soil Remediation by Bio-Physicochemical Synergistic Process, Shenyang, 110016, China
| | | | - Bo Wu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China; National-Local Joint Engineering Laboratory of Contaminated Soil Remediation by Bio-Physicochemical Synergistic Process, Shenyang, 110016, China
| | - Shuhai Guo
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China; National-Local Joint Engineering Laboratory of Contaminated Soil Remediation by Bio-Physicochemical Synergistic Process, Shenyang, 110016, China.
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4
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Bruckberger MC, Morgan MJ, Bastow TP, Walsh T, Prommer H, Mukhopadhyay A, Kaksonen AH, Davis GB, Puzon GJ. Investigation into the microbial communities and associated crude oil-contamination along a Gulf War impacted groundwater system in Kuwait. WATER RESEARCH 2020; 170:115314. [PMID: 31835139 DOI: 10.1016/j.watres.2019.115314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 11/14/2019] [Accepted: 11/15/2019] [Indexed: 06/10/2023]
Abstract
During the First Gulf War (1991) a large number of oil wells were destroyed and oil fires subsequently extinguished with seawater. As a result Kuwait's sparse fresh groundwater resources were severely contaminated with crude oil. Since then limited research has focused on the microbial community ecology of the groundwater and their impact on the associated contamination. Here, the microbial community ecology (bacterial, archaeal and eukaryotic) and how it relates to the characteristics of the hydrocarbon contaminants were examined for the first time since the 1991 event. This study was conducted using 15 wells along the main groundwater flow direction and detected several potential hydrocarbon degrading microorganisms such as Hyphomicrobiaceae, Porphyromonadaceae and Eurotiomycetes. The beta diversity of the microbial communities correlated significantly with total petroleum hydrocarbon (TPH) concentrations and salinity. The TPH consisted mainly of polar compounds present as an unresolved complex mixture (UCM) of a highly recalcitrant nature. Based on the proportions of TPH to dissolved organic carbon (DOC), the results indicate that some minor biodegradation has occurred within highly contaminated aquifer zones. However, overall the results from this study suggest that the observed variations in TPH concentrations among the sampled wells are mainly induced by mixing/dilution with pristine groundwater rather than by biodegradation of the contaminants. The findings make an important contribution to better understand the fate of the groundwater pollution in Kuwait, with important implications for the design of future remediation efforts.
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Affiliation(s)
- Melanie C Bruckberger
- CSIRO Land and Water, Private Bag No. 5, Wembley, Western Australia, 6913, Australia; University of Western Australia, School of Agriculture and Environment, 35 Stirling Hwy, Crawley, WA, 6009, Australia
| | | | - Trevor P Bastow
- CSIRO Land and Water, Private Bag No. 5, Wembley, Western Australia, 6913, Australia
| | - Tom Walsh
- CSIRO Land and Water, Canberra, ACT, Australia
| | - Henning Prommer
- CSIRO Land and Water, Private Bag No. 5, Wembley, Western Australia, 6913, Australia; University of Western Australia, School of Earth Sciences, 35 Stirling Hwy, Crawley, WA, 6009, Australia
| | - Amitabha Mukhopadhyay
- Water Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, 13109, Safat, Kuwait
| | - Anna H Kaksonen
- CSIRO Land and Water, Private Bag No. 5, Wembley, Western Australia, 6913, Australia; School of Biomedical Sciences, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia
| | - Greg B Davis
- CSIRO Land and Water, Private Bag No. 5, Wembley, Western Australia, 6913, Australia
| | - Geoffrey J Puzon
- CSIRO Land and Water, Private Bag No. 5, Wembley, Western Australia, 6913, Australia.
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5
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Lu S, Sun Y, Lu B, Zheng D, Xu S. Change of abundance and correlation of Nitrospira inopinata-like comammox and populations in nitrogen cycle during different seasons. CHEMOSPHERE 2020; 241:125098. [PMID: 31877618 DOI: 10.1016/j.chemosphere.2019.125098] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 07/25/2019] [Accepted: 10/09/2019] [Indexed: 06/10/2023]
Abstract
Complete-nitrifying bacteria (comammox) play important roles in nitrogen-overloading aquatic systems. However, the understanding of the environmental relevance is still limited. Here, we studied the responses of comammox bacteria (Nitrospira inopinata) in a tributary of the Yellow River, with the water and sediment, microbial, seasonal, and chemical variations considered. Illumina sequencing indicated that the predominant phyla in the river sediment were Proterobacteria, Bacteroidetes, Actinobacteria, and Chloroflex. Quantitative PCR revealed that N. inopinata-like comammox were approximately twice as abundant in the water during the wet season and in the sediment during the dry season than that of other conditions. Significant correlations were found between the abundance of N. inopinata-like comammox and pH (r = 0.58), temperature (r = 0.63), and dissolved oxygen (r = - 0.77). The abundance of N. inopinata-like comammox was higher than that of ammonia oxidizing archaea (AOA), and lower than that of ammonia oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB). Furthermore, a significant correlation was discovered between N. inopinata-like comammox and NOB (r = 0.60), and so was anammox bacteria (r = 0.358). Interestingly, N. inopinata-like comammox also showed positive relationships with denitrifying microbes (r = 0.559).
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Affiliation(s)
- Sidan Lu
- College of Water Sciences, Beijing Normal University, Beijing, China
| | - Yujiao Sun
- College of Water Sciences, Beijing Normal University, Beijing, China; Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, Beijing, China.
| | - Baiyun Lu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Heilongjiang, Harbin, 150090 China
| | - Danyang Zheng
- College of Water Sciences, Beijing Normal University, Beijing, China
| | - Shangwei Xu
- College of Water Sciences, Beijing Normal University, Beijing, China
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6
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Chemical and biological dispersants differently affect the bacterial communities of uncontaminated and oil-contaminated marine water. Braz J Microbiol 2019; 51:691-700. [PMID: 31612432 DOI: 10.1007/s42770-019-00153-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 09/04/2019] [Indexed: 12/16/2022] Open
Abstract
The use of dispersants in marine environments is a common practice worldwide for oil spill remediation. While the effects of chemical dispersants have been extensively studied, those of biosurfactants, mainly surfactin that is considered one of the most effective surfactants produced by bacteria, have been less considered. We constructed microcosms containing marine water collected from Grumari beach (W_GB, Brazil) and from Schiermonnikoog beach (W_SI, The Netherlands) with the addition of oil (WO), Ultrasperse II plus oil (WOS), surfactin plus oil (WOB), and both dispersants (WS or WB) individually. In these treatments, the composition of bacterial communities and their predictive biodegradation potential were determined over time. High-throughput sequencing of the rrs gene encoding bacterial 16S rRNA revealed that Bacteroidetes (Flavobacteria class) and Proteobacteria (mainly Gammaproteobacteria and Alphaproteobacteria classes) were the most abundant phyla found among the W_GB and W_SI microbiomes, and the relative abundance of the bacterial types in the different microcosms varied based on the treatment applied. Non-metrical multidimensional scaling (NMDS) revealed a clear clustering based on the addition of oil and on the dispersant type added to the GB or SI microcosms, i.e., WB and WOB were separated from WS and WOS in both marine ecosystems studied. The potential presence of diverse enzymes involved in oil degradation was indicated by predictive bacterial metagenome reconstruction. The abundance of predicted genes for degradation of petroleum hydrocarbons increased more in surfactin-treated microcosms than those treated with Ultrasperse II, mainly in the marine water samples from Grumari beach.
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7
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Sun W, Ali I, Liu J, Dai M, Cao W, Jiang M, Saren G, Yu X, Peng C, Naz I. Isolation, identification, and characterization of diesel-oil-degrading bacterial strains indigenous to Changqing oil field, China. J Basic Microbiol 2019; 59:723-734. [PMID: 31081547 DOI: 10.1002/jobm.201800674] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 04/04/2019] [Accepted: 04/25/2019] [Indexed: 11/07/2022]
Abstract
In the present study, 12 indigenous diesel-oil-degrading bacteria were isolated from the petroleum-contaminated soils of the Changqing oil field (Xi'an, China). Measurement of the diesel-oil degradation rates of these strains by the gravimetric method revealed that they ranged from 42% to 66% within 2 weeks. The highest degradation rates were observed from strains CQ8-1 (66%), CQ8-2 (62.6%), and CQ11 (59%), which were identified as Bacillus thuringiensis, Ochrobactrum anthropi, and Bordetella bronchialis, respectively, based on their 16S rDNA sequences. Moreover, the physiological and biochemical properties of these three strains were analyzed by Gram staining, catalase, oxidase, and Voges-Proskauer tests. Transmission electron microscopy showed that all three strains were rod shaped with flagella. Gas chromatography and mass spectrometric analyses indicated that medium- and long-chain n-alkanes in diesel oil (C11-C29) were degraded to different degrees by B. thuringiensis, O. anthropi, and B. bronchialis, and the degradation rates gradually decreased as the carbon numbers increased. Overall, the results of this study indicate strains CQ8-1, CQ8-2, and CQ11 might be useful for environmentally friendly and cost-effective bioremediation of oil-contaminated soils.
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Affiliation(s)
- Wuyang Sun
- The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, China
| | - Imran Ali
- The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, China
| | - Jiwei Liu
- The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, China
| | - Min Dai
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing, China
| | - Wenrui Cao
- The Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Mingyu Jiang
- The Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Gaowa Saren
- The Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Xinke Yu
- The Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Changsheng Peng
- The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, China
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing, China
| | - Iffat Naz
- Department of Biology, Qassim University, Buraidah, Kingdom of Saudi Arabia (KSA)
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
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Sun G, Du Y, Yin J, Jiang Y, Zhang D, Jiang B, Li G, Wang H, Kong F, Su L, Hu J. Response of microbial communities to different organochlorine pesticides (OCPs) contamination levels in contaminated soils. CHEMOSPHERE 2019; 215:461-469. [PMID: 30336323 DOI: 10.1016/j.chemosphere.2018.09.160] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 09/21/2018] [Accepted: 09/27/2018] [Indexed: 06/08/2023]
Abstract
Understanding microbial community structure and diversity in contaminated soils helps optimize the bioremediation strategies and performance. This study investigated the roles of environmental variables and contamination levels of organochlorine pesticides (OCPs) in shaping microbial community structure at an abandoned aged insecticide plant site. In total, 28 bacterial phyla were identified across soils with different physiochemical properties and OCPs levels. Proteobacteria, Bacterioidetes and Firmicutes represented the dominant lineages, and accounted for 60.2%-69.2%, 5.6%-9.7% and 6.7%-9.4% of the total population, respectively. The overall microbial diversities, in terms of phylogenetic diversity and phylotype richness, were correlated with the contents of hexachlorocyclohexanes (HCHs) and dichlorodiphenyltrichloroethanes (DDTs) in soils, as well as other soil properties including total nitrogen, dissolved organic carbon, pH and vegetation. The multivariate regression tree (MRT) analysis revealed that the soil microbial diversity was significantly impacted by vegetation, which explained 31.8% of the total variation, followed by OCPs level (28.3%), total nitrogen (12.4%), dissolved organic carbon (6.3%) and pH (2.4%). Our findings provide new insights and implications into the impacts on soil microbial community by OCPs contamination and other environmental variables, and offer potential strategic bioremediation for the management of OCPs contaminated sites.
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Affiliation(s)
- Guangdong Sun
- China Institute of Water Resources and Hydropower Research, 100019, China
| | - Yu Du
- School of Environmental Science, Tsinghua University, Beijing, 100084, China; State Key Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China.
| | - JunXian Yin
- China Institute of Water Resources and Hydropower Research, 100019, China
| | - YunZhong Jiang
- China Institute of Water Resources and Hydropower Research, 100019, China
| | - Dayi Zhang
- School of Environmental Science, Tsinghua University, Beijing, 100084, China; State Key Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China
| | - Bo Jiang
- University of Science and Technology Beijing, 102231, China
| | - Guanghe Li
- School of Environmental Science, Tsinghua University, Beijing, 100084, China; State Key Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China
| | - Hao Wang
- China Institute of Water Resources and Hydropower Research, 100019, China
| | - Fanxin Kong
- State Key Laboratory of Heavy Oil Processing, Beijing Key Laboratory of Oil & Gas Pollution Control, China; University of Petroleum, Beijing, 102249, China
| | - Limao Su
- China Institute of Water Resources and Hydropower Research, 100019, China
| | - Jialin Hu
- China Institute of Water Resources and Hydropower Research, 100019, China
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Cecotti M, Coppotelli BM, Mora VC, Viera M, Morelli IS. Efficiency of surfactant-enhanced bioremediation of aged polycyclic aromatic hydrocarbon-contaminated soil: Link with bioavailability and the dynamics of the bacterial community. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 634:224-234. [PMID: 29627545 DOI: 10.1016/j.scitotenv.2018.03.303] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/18/2018] [Accepted: 03/24/2018] [Indexed: 06/08/2023]
Abstract
Shifts in the bacterial-community dynamics, bioavailability, and biodegradation of polycyclic aromatic hydrocarbons (PAHs) of chronically contaminated soil were analyzed in Triton X-100-treated microcosms at the critical micelle concentration (T-CMC) and at two sub-CMC doses. Only the sub-CMC-dose microcosms reached sorbed-PAH concentrations significantly lower than the control: 166±32 and 135±4mgkg-1 dry soil versus 266±51mgkg-1; consequently an increase in high- and low-molecular-weight PAHs biodegradation was observed. After 63days of incubation pyrosequencing data evidenced differences in diversity and composition between the surfactant-modified microcosms and the control, with those with sub-CMC doses containing a predominance of the orders Sphingomonadales, Acidobacteriales, and Gemmatimonadales (groups of known PAHs-degrading capability). The T-CMC microcosm exhibited a lower richness and diversity index with a marked predominance of the order Xanthomonadales, mainly represented by the Stenotrophomonas genus, a PAHs- and Triton X-100-degrading bacterium. In the T-CMC microcosm, whereas the initial surface tension was 35mNm-1, after 63days of incubation an increase up to 40mNm-1 was registered. The previous observation and the gas-chromatography data indicated that the surfactant may have been degraded at the CMC by a highly selective bacterial community with a consequent negative impact on PAHs biodegradation. This work obtained strong evidence for the involvement of physicochemical and biologic influences determining the different behaviors of the studied microcosms. The results reported here contribute significantly to an optimization of, surfactant-enhanced bioremediation strategies for chronically contaminated soil since the application of doses below the CMC would reduce the overall costs.
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Affiliation(s)
- Martina Cecotti
- Centro de Investigación y Desarrollo en Fermentaciones Industriales, CINDEFI (UNLP; CCT-La Plata, CONICET), La Plata, Argentina
| | - Bibiana M Coppotelli
- Centro de Investigación y Desarrollo en Fermentaciones Industriales, CINDEFI (UNLP; CCT-La Plata, CONICET), La Plata, Argentina
| | - Verónica C Mora
- Centro de Investigación y Desarrollo en Fermentaciones Industriales, CINDEFI (UNLP; CCT-La Plata, CONICET), La Plata, Argentina
| | - Marisa Viera
- Centro de Investigación y Desarrollo en Tecnología de Pinturas, CIDEPINT (CICPBA, CCT-La Plata, CONICET), La Plata, Argentina
| | - Irma S Morelli
- Centro de Investigación y Desarrollo en Fermentaciones Industriales, CINDEFI (UNLP; CCT-La Plata, CONICET), La Plata, Argentina; Comisión de Investigaciones Científicas de la Provincia de Buenos Aires, La Plata, Argentina.
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10
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N Nuñal S, Santander-DE Leon SMS, Hongyi W, Regal AA, Yoshikawa T, Okunishi S, Maeda H. Hydrocarbon Degradation and Bacterial Community Responses During Remediation of Sediment Artificially Contaminated with Heavy Oil. Biocontrol Sci 2018; 22:187-203. [PMID: 29279576 DOI: 10.4265/bio.22.187] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Natural biodegradation of heavy oil in the marine environment can be accelerated by the addition of nutrients or seeding of pre-selected microorganisms. In this study, a microcosm experiment was conducted to investigate the effects of inorganic nutrient supplementation (biostimulation) and bacterial consortium amendment (bioaugmentation) on the natural degradative processes of artificially contaminated sediment. Our results revealed that the addition of nutrients had greater effect on remediation than the addition of bacterial cells. Supplementation of inorganic nutrients promoted and sustained the growth of oil-degrading and heterotrophic bacteria throughout the experimental period. Highest reduction in the total petroleum hydrocarbons, and of their components, n-alkanes, polycylic aromatic hydrocarbons (PAHs) and alkyl PAHs, were obtained in the biostimulated microcosms. Changes in the bacterial community were monitored by the PCR-DGGE (polymerase chain reaction-denaturing gradient gel electrophoresis) method targeting the 16S rDNA gene. Results revealed different responses of the bacterial community to the addition of heavy oil and remediation agents. Shifts in the bacterial communities in the seawater were more dynamic than in the sediment. Results of this study showed that addition of remediation agents significantly enhanced the natural biodegradation of heavy oil in a sediment-seawater microcosm trial.
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Affiliation(s)
- Sharon N Nuñal
- Institute of Fish Processing Technology, College of Fisheries and Ocean Sciences, University of the Philippines Visayas
| | - Sheila Mae S Santander-DE Leon
- Institute of Marine Fisheries and Oceanology, College of Fisheries and Ocean Sciences, University of the Philippines Visayas
| | - Wei Hongyi
- Education and Research Center for Marine Resources and Environment, Faculty of Fisheries, Kagoshima University
| | | | - Takeshi Yoshikawa
- Education and Research Center for Marine Resources and Environment, Faculty of Fisheries, Kagoshima University
| | - Suguru Okunishi
- Education and Research Center for Marine Resources and Environment, Faculty of Fisheries, Kagoshima University
| | - Hiroto Maeda
- Education and Research Center for Marine Resources and Environment, Faculty of Fisheries, Kagoshima University
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11
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Sun JQ, Xu L, Liu XY, Zhao GF, Cai H, Nie Y, Wu XL. Functional Genetic Diversity and Culturability of Petroleum-Degrading Bacteria Isolated From Oil-Contaminated Soils. Front Microbiol 2018; 9:1332. [PMID: 29973925 PMCID: PMC6019457 DOI: 10.3389/fmicb.2018.01332] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 05/31/2018] [Indexed: 12/18/2022] Open
Abstract
In this study, we compared the culturability of aerobic bacteria isolated from long-term oil-contaminated soils via enrichment and direct-plating methods; bacteria were cultured at 30°C or ambient temperatures. Two soil samples were collected from two sites in the Shengli oilfield located in Dongying, China. One sample (S0) was close to the outlet of an oil-production water treatment plant, and the other sample (S1) was located 500 m downstream of the outlet. In total, 595 bacterial isolates belonging to 56 genera were isolated, distributed in Actinobacteria, Firmicutes, Bacterioidetes, and Proteobacteria. It was interesting that Actinobacteria and Firmicutes were not detected from the 16S rRNA gene clone library. The results suggested the activation of rare species during culture. Using the enrichment method, 239 isolates (31 genera) and 96 (22 genera) isolates were obtained at ambient temperatures and 30°C, respectively, from S0 soil. Using the direct-plating method, 97 isolates (15 genera) and 163 isolates (20 genera) were obtained at ambient temperatures and 30°C, respectively, from two soils. Of the 595 isolates, 244 isolates (41.7% of total isolates) could degrade n-hexadecane. A greater number of alkane-degraders was isolated at ambient temperatures using the enrichment method, suggesting that this method could significantly improve bacterial culturability. Interestingly, the proportion of alkane degrading isolates was lower in the isolates obtained using enrichment method than that obtained using direct-plating methods. Considering the greater species diversity of isolates obtained via the enrichment method, this technique could be used to increase the diversity of the microbial consortia. Furthermore, phenol hydroxylase genes (pheN), medium-chain alkane monooxygenases genes (alkB and CYP153A), and long-chain alkane monooxygenase gene (almA) were detected in 60 isolates (11 genotypes), 91 isolates (27 genotypes) and 93 isolates (24 genotypes), and 34 isolates (14 genotypes), respectively. This study could provide new insights into microbial resources from oil fields or other environments, and this information will be beneficial for bioremediation of petroleum contamination and for other industrial applications.
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Affiliation(s)
- Ji-Quan Sun
- Department of Energy & Resources Engineering, College of Engineering, Peking University, Beijing, China
| | - Lian Xu
- Department of Energy & Resources Engineering, College of Engineering, Peking University, Beijing, China
| | - Xue-Ying Liu
- Department of Energy & Resources Engineering, College of Engineering, Peking University, Beijing, China
| | - Gui-Fang Zhao
- School of Environment, Tsinghua University, Beijing, China
| | - Hua Cai
- School of Environment, Tsinghua University, Beijing, China
| | - Yong Nie
- Department of Energy & Resources Engineering, College of Engineering, Peking University, Beijing, China
| | - Xiao-Lei Wu
- Department of Energy & Resources Engineering, College of Engineering, Peking University, Beijing, China
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12
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Wang S, Liu G, Yuan Z, Da C. n-Alkanes in sediments from the Yellow River Estuary, China: Occurrence, sources and historical sedimentary record. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 150:199-206. [PMID: 29276955 DOI: 10.1016/j.ecoenv.2017.12.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 12/01/2017] [Accepted: 12/09/2017] [Indexed: 06/07/2023]
Abstract
UNLABELLED A total of 21 surface sediments from the Yellow River Estuary (YRE) and a sediment core from the abandoned Old Yellow River Estuary (OYRE) were analyzed for n-alkanes using gas chromatography-mass spectrometry (GC-MS). n-Alkanes in the range C12-C33 and C13-C34 were identified in the surface sediments and the core, respectively. The homologous series were mainly bimodal distribution pattern without odd/even predominance in the YRE and OYRE. The total n-alkanes concentrations in the surface sediments ranged from 0.356 to 0.572mg/kg, with a mean of 0.434mg/kg on dry wt. BASIS Evaluation of n-alkanes proxies indicated that the aliphatic hydrocarbons in the surface sediments were derived mainly from a petrogenic source with a relatively low contribution of submerged/floating macrophytes, terrestrial and emergent plants. The dated core covered the time period 1925-2012 and the mean sedimentation rate was ca. 0.5cm/yr. The total n-alkanes concentrations in the core ranged from 0.0394 to 0.941mg/kg, with a mean of 0.180mg/kg. The temporal evolution of n-alkanes reflected the historical input of aliphatic hydrocarbons and was consistent with local and regional anthropogenic activity. In general, the investigation on the sediment core revealed a trend of regional environmental change and the role of anthropogenic activity in environmental change.
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Affiliation(s)
- Shanshan Wang
- CAS Key Laboratory of Crust-Mantle Materials and the Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an 710075, Shaanxi, China
| | - Guijian Liu
- CAS Key Laboratory of Crust-Mantle Materials and the Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an 710075, Shaanxi, China.
| | - Zijiao Yuan
- CAS Key Laboratory of Crust-Mantle Materials and the Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
| | - Chunnian Da
- CAS Key Laboratory of Crust-Mantle Materials and the Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
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13
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Jiao S, Zhang Z, Yang F, Lin Y, Chen W, Wei G. Temporal dynamics of microbial communities in microcosms in response to pollutants. Mol Ecol 2017; 26:923-936. [PMID: 28012222 DOI: 10.1111/mec.13978] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 12/08/2016] [Indexed: 01/18/2023]
Abstract
Elucidating the mechanisms underlying microbial succession is a major goal of microbial ecology research. Given the increasing human pressure on the environment and natural resources, responses to the repeated introduction of organic and inorganic pollutants are of particular interest. To investigate the temporal dynamics of microbial communities in response to pollutants, we analysed the microbial community structure in batch microcosms that were inoculated with soil bacteria following exposure to individual or combined pollutants (phenanthrene, n-octadecane, phenanthrene + n-octadecane and phenanthrene + n-octadecane + CdCl2 ). Subculturing was performed at 10-day intervals, followed by high-throughput sequencing of 16S rRNA genes. The dynamics of microbial communities in response to different pollutants alone and in combination displayed similar patterns during enrichment. Specifically, the repression and induction of microbial taxa were dominant, and the fluctuation was not significant. The rate of appearance for new taxa and the temporal turnover within microbial communities were higher than the rates reported in other studies of microbial communities in air, water and soil samples. In addition, conditionally rare taxa that were specific to the treatments exhibited higher betweenness centrality values in the co-occurrence network, indicating a strong influence on other interactions in the community. These results suggest that the repeated introduction of pollutants could accelerate microbial succession in microcosms, resulting in the rapid re-equilibration of microbial communities.
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Affiliation(s)
- Shuo Jiao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhengqing Zhang
- Laboratory of Forestry Pests Biological Control, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Fan Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yanbing Lin
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Weimin Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Gehong Wei
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
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14
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Cai B, Ma J, Yan G, Dai X, Li M, Guo S. Comparison of phytoremediation, bioaugmentation and natural attenuation for remediating saline soil contaminated by heavy crude oil. Biochem Eng J 2016. [DOI: 10.1016/j.bej.2016.04.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Li X, Zhao L, Adam M. Biodegradation of marine crude oil pollution using a salt-tolerant bacterial consortium isolated from Bohai Bay, China. MARINE POLLUTION BULLETIN 2016; 105:43-50. [PMID: 26952993 DOI: 10.1016/j.marpolbul.2016.02.073] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 02/22/2016] [Accepted: 02/26/2016] [Indexed: 06/05/2023]
Abstract
This study aims at constructing an efficient bacterial consortium to biodegrade crude oil spilled in China's Bohai Sea. In this study, TCOB-1 (Ochrobactrum), TCOB-2 (Brevundimonas), TCOB-3 (Brevundimonas), TCOB-4 (Bacillus) and TCOB-5 (Castellaniella) were isolated from Bohai Bay. Through the analysis of hydrocarbon biodegradation, TCOB-4 was found to biodegrade more middle-chain n-alkanes (from C17 to C23) and long-chain n-alkanes (C31-C36). TCOB-5 capable to degrade more n-alkanes including C24-C30 and aromatics. On the basis of complementary advantages, TCOB-4 and TCOB-5 were chosen to construct a consortium which was capable of degrading about 51.87% of crude oil (2% w/v) after 1week of incubation in saline MSM (3% NaCl). It is more efficient compared with single strain. In order to biodegrade crude oil, the construction of bacterial consortia is essential and the principle of complementary advantages could reduce competition between microbes.
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Affiliation(s)
- Xinfei Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Lin Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, People's Republic of China.
| | - Mohamed Adam
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, People's Republic of China
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16
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Jiao S, Chen W, Wang E, Wang J, Liu Z, Li Y, Wei G. Microbial succession in response to pollutants in batch-enrichment culture. Sci Rep 2016; 6:21791. [PMID: 26905741 PMCID: PMC4764846 DOI: 10.1038/srep21791] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 02/01/2016] [Indexed: 11/29/2022] Open
Abstract
As a global problem, environmental pollution is an important factor to shape the microbial communities. The elucidation of the succession of microbial communities in response to pollutants is essential for developing bioremediation procedures. In the present study, ten batches of soil-enrichment subcultures were subjected to four treatments: phenanthrene, n-octadecane, phenanthrene + n-octadecane, or phenanthrene + n-octadecane + CdCl2. Forty pollutant-degrading consortia, corresponding to each batch of the four treatments were obtained. High-throughput sequencing of the 16S rRNA gene revealed that the diversity, richness and evenness of the consortia decreased throughout the subculturing procedure. The well-known hydrocarbon degraders Acinetobacter, Gordonia, Sphingobium, Sphingopyxis, and Castellaniella and several other genera, including Niabella and Naxibacter, were detected in the enriched consortia. The predominant microbes varied and the microbial community in the consortia gradually changed during the successive subculturing depending on the treatment, indicating that the pollutants influenced the microbial successions. Comparison of the networks in the treatments indicated that organic pollutants and CdCl2 affected the co-occurrence patterns in enriched consortia. In conclusion, single environmental factors, such as the addition of nutrients or selection pressure, can shape microbial communities and partially explain the extensive differences in microbial community structures among diverse environments.
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Affiliation(s)
- Shuo Jiao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling Shaanxi 712100, P. R. China
| | - Weimin Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling Shaanxi 712100, P. R. China
| | - Entao Wang
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, 11340 México, D.F., Mexico
| | - Junman Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling Shaanxi 712100, P. R. China
| | - Zhenshan Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling Shaanxi 712100, P. R. China
| | - Yining Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling Shaanxi 712100, P. R. China
| | - Gehong Wei
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling Shaanxi 712100, P. R. China
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17
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Mukherjee S, Sipilä T, Pulkkinen P, Yrjälä K. Secondary successional trajectories of structural and catabolic bacterial communities in oil-polluted soil planted with hybrid poplar. Mol Ecol 2015; 24:628-42. [DOI: 10.1111/mec.13053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Revised: 12/17/2014] [Accepted: 12/19/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Shinjini Mukherjee
- Department of Biosciences; MEM-Group; University of Helsinki; PO Box 56 FI-00014 Helsinki Finland
| | - Timo Sipilä
- Department of Biosciences; University of Helsinki; PO Box 65 FI-00014 Helsinki Finland
| | - Pertti Pulkkinen
- The Finnish Forest Research Institute; Haapastensyrjäntie 34 FI-12600 Läyliäinen Finland
| | - Kim Yrjälä
- Department of Biosciences; MEM-Group; University of Helsinki; PO Box 56 FI-00014 Helsinki Finland
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18
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Gao YC, Guo SH, Wang JN, Li D, Wang H, Zeng DH. Effects of different remediation treatments on crude oil contaminated saline soil. CHEMOSPHERE 2014; 117:486-493. [PMID: 25240723 DOI: 10.1016/j.chemosphere.2014.08.070] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 08/14/2014] [Accepted: 08/19/2014] [Indexed: 06/03/2023]
Abstract
Remediation of the petroleum contaminated soil is essential to maintain the sustainable development of soil ecosystem. Bioremediation using microorganisms and plants is a promising method for the degradation of crude oil contaminants. The effects of different remediation treatments, including nitrogen addition, Suaeda salsa planting, and arbuscular mycorrhiza (AM) fungi inoculation individually or combined, on crude oil contaminated saline soil were assessed using a microcosm experiment. The results showed that different remediation treatments significantly affected the physicochemical properties, oil contaminant degradation and bacterial community structure of the oil contaminated saline soil. Nitrogen addition stimulated the degradation of total petroleum hydrocarbon significantly at the initial 30d of remediation. Coupling of different remediation techniques was more effective in degrading crude oil contaminants. Applications of nitrogen, AM fungi and their combination enhanced the phytoremediation efficiency of S. salsa significantly. The main bacterial community composition in the crude oil contaminated saline soil shifted with the remediation processes. γ-Proteobacteria, β-Proteobacteria, and Actinobacteria were the pioneer oil-degraders at the initial stage, and Firmicutes were considered to be able to degrade the recalcitrant components at the later stage.
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Affiliation(s)
- Yong-Chao Gao
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China; Provincial Key Laboratory of Applied Microbiology, Institute of Biology, Shandong Academy of Sciences, 19 Keyuan Road, Jinan 250014, China
| | - Shu-Hai Guo
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | - Jia-Ning Wang
- Provincial Key Laboratory of Applied Microbiology, Institute of Biology, Shandong Academy of Sciences, 19 Keyuan Road, Jinan 250014, China
| | - Dan Li
- Provincial Key Laboratory of Applied Microbiology, Institute of Biology, Shandong Academy of Sciences, 19 Keyuan Road, Jinan 250014, China
| | - Hui Wang
- School of Resources and Environment, University of Jinan, Jinan 250022, China
| | - De-Hui Zeng
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China.
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19
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Wang X, Li F, Guo G, Wang S, Boronin A, Wang Q. Temporal Changes in Microbial Metabolic Characteristics in Field-Scale Biopiles Composed of Aged Oil Sludge. ENVIRONMENTAL ENGINEERING SCIENCE 2014; 31:507-513. [PMID: 25228785 PMCID: PMC4161157 DOI: 10.1089/ees.2013.0461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 05/18/2014] [Indexed: 06/03/2023]
Abstract
Disposal of oil sludge, a hazardous waste, is currently a prevalent environmental issue. In this study, two field-scale biopiles were constructed to explore the temporal changes of microbial metabolic characteristics during the biotreatment of aged oil sludge. Bulking agent was mixed thoroughly with oily sludge to form a treated pile. The BIOLOG™ system was used to analyze the community level physiological parameters, including microbial metabolic activity, diversity, and variance. In comparison with the control, the community level physiological parameters of the treated pile were dramatically improved. Microbial metabolic activity of the treated pile was improved by 25.06% calculated from the maximums during the treatment. Microbial diversity index (Shannon index) ranges were improved from 1.64-3.02 (control pile) to 2.34-3.14 (treated pile). The numbers of petroleum-degrading bacteria and the total heterotrophic bacteria were correlated with the environmental temperature, and microbial metabolic characteristics in the treated pile revealed the distinctive carbon resources selection with the addition of cotton stalk. Temporal microbial metabolic characteristics, which have important effect on bioremediation, were revealed in this study.
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Affiliation(s)
- Xiang Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
| | - Fasheng Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - Guanlin Guo
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - Shijie Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - Alexander Boronin
- Institute of Biochemistry and Physiology of Microorganisms, Russia Academy of Sciences, Pushchino, Russia
| | - Qunhui Wang
- School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing, China
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20
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Sun JQ, Xu L, Zhang Z, Li Y, Tang YQ, Wu XL. Diverse bacteria isolated from microtherm oil-production water. Antonie van Leeuwenhoek 2013; 105:401-11. [DOI: 10.1007/s10482-013-0088-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 11/25/2013] [Indexed: 12/01/2022]
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21
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Gong J, Qing Y, Guo X, Warren A. "Candidatus Sonnebornia yantaiensis", a member of candidate division OD1, as intracellular bacteria of the ciliated protist Paramecium bursaria (Ciliophora, Oligohymenophorea). Syst Appl Microbiol 2013; 37:35-41. [PMID: 24231291 DOI: 10.1016/j.syapm.2013.08.007] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Revised: 08/29/2013] [Accepted: 08/30/2013] [Indexed: 10/26/2022]
Abstract
An intracellular bacterium was discovered in an isolate of Paramecium bursaria from a freshwater pond in Yantai, China. The bacteria were abundant and exclusively found in the cytoplasm of the host which, along with the green alga Chlorella, formed a three-partner consortium that could survive in pure water for at least one week. Cloning, sequencing and phylogenetic analysis of the bacterial 16S rRNA gene showed that the bacterium belonged to the uncultured candidate division OD1, which usually forms part of the rare biosphere. Transmission electron microscopy and fluorescence in situ hybridization (FISH) with specific probes showed that the bacteria were usually located close to the perialgal membranes of endosymbiotic Chlorella cells, and occasionally irregularly distributed throughout the host cytoplasm. The name "Candidatus Sonnebornia yantaiensis" gen. nov., sp. nov. is proposed for the new bacterium. A strongly supported monophyletic subclade, OD1-p, which included the new species, was recognized and this study highlights that protists can be important hosts for rare bacterial taxa.
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Affiliation(s)
- Jun Gong
- Microbial Ecology Group, Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; College of Life Sciences, South China Normal University, Guangzhou 510631, China.
| | - Yao Qing
- Microbial Ecology Group, Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; College of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Xiaohong Guo
- Microbial Ecology Group, Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Alan Warren
- Department of Life Sciences, Natural History Museum, London SW7 5BD, United Kingdom
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22
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Yu OH, Lee HG, Shim WJ, Kim M, Park HS. Initial impacts of the Hebei Spirit oil spill on the sandy beach macrobenthic community west coast of Korea. MARINE POLLUTION BULLETIN 2013; 70:189-96. [PMID: 23522682 DOI: 10.1016/j.marpolbul.2013.02.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 02/20/2013] [Accepted: 02/21/2013] [Indexed: 05/06/2023]
Abstract
Petroleum hydrocarbon contamination and macrobenthos in the sandy tidal flats of Taean were monitored for 1 year to assess the impacts of Hebei Spirit oil on the macrobenthic community. A total of 207 macrobenthic fauna was collected, and the mean density and biomass of macrobenthic fauna continued to decrease until 12 months after the oil spill, but macrobenthic density at the most heavily affected sites increased by about twofold. In January 2008, the dominant species occurred at very low densities in strongly affected sites. The macrobenthic communities differed between oil-affected and unaffected sites. In particular, differences in community structure at Mallipo beach were larger than those at Shinduri. We suggest that long-term monitoring is needed to assess the specific effects of oil pollution on the sandy intertidal macrobenthic community.
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Affiliation(s)
- Ok Hwan Yu
- Korea Institute of Ocean Science & Technology, 787 Haeanro, Ansan 426-744, Republic of Korea.
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23
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Pyrosequencing investigation into the bacterial community in permafrost soils along the China-Russia Crude Oil Pipeline (CRCOP). PLoS One 2012; 7:e52730. [PMID: 23300754 PMCID: PMC3530473 DOI: 10.1371/journal.pone.0052730] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Accepted: 11/21/2012] [Indexed: 11/19/2022] Open
Abstract
The China-Russia Crude Oil Pipeline (CRCOP) goes through 441 km permafrost soils in northeastern China. The bioremediation in case of oil spills is a major concern. So far, little is known about the indigenous bacteria inhabiting in the permafrost soils along the pipeline. A pilot 454 pyrosequencing analysis on the communities from four selected sites which possess high environment risk along the CRCOP is herein presented. The results reveal an immense bacterial diversity than previously anticipated. A total of 14448 OTUs with 84834 reads are identified, which could be assigned into 39 different phyla, and 223 families or 386 genera. Only five phyla sustain a mean OTU abundance more than 5% in all the samples, but they altogether account for 85.08% of total reads. Proteobacteria accounts for 41.65% of the total OTUs or 45% of the reads across all samples, and its proportion generally increases with soil depth, but OTUs numerically decline. Among Proteobacteria, the abundance of Beta-, Alpha-, Delta- and Gamma- subdivisions average to 38.7% (2331 OTUs), 37.5% (2257 OTUs), 10.35% (616 OTUs), and 6.21% (374 OTUs), respectively. Acidobacteria (esp. Acidobacteriaceae), Actinobacteria (esp. Intrasporangiaceae), Bacteroidetes (esp. Sphingobacteria and Flavobacteria) and Chloroflexi (esp. Anaerolineaceae) are also very common, accounting for 8.56% (1237 OTUs), 7.86% (1136 OTUs); 7.35% (1063 OTUs) and 8.27% (1195 OTUs) of total libraries, respectively. The ordination analysis indicates that bacteria communities in the upper active layer cluster together (similar), while bacterial consortia from the lower active layer and permafrost table scatter (less similar). The abundance of Rhodococcus (12 OTUs), Pseudomonas (71 OTUs) and Sphingomonas (87 OTUs) is even less (<0.01%). This effort to profile the background diversity may set the first stage for better evaluating the bacterial dynamics in response to accidental oil spills.
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24
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Gong XC, Liu ZS, Guo P, Chi CQ, Chen J, Wang XB, Tang YQ, Wu XL, Liu CZ. Bacteria in crude oil survived autoclaving and stimulated differentially by exogenous bacteria. PLoS One 2012; 7:e40842. [PMID: 23028421 PMCID: PMC3444520 DOI: 10.1371/journal.pone.0040842] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Accepted: 06/13/2012] [Indexed: 11/19/2022] Open
Abstract
Autoclaving of crude oil is often used to evaluate the hydrocarbon-degrading abilities of bacteria. This may be potentially useful for bioaugmentation and microbial enhanced oil recovery (MEOR). However, it is not entirely clear if “endogenous” bacteria (e.g., spores) in/on crude oil survive the autoclaving process, or influence subsequent evaluation of the hydrocarbon-degradation abilities of the “exogenous” bacterial strains. To test this, we inoculated autoclaved crude oil medium with six exogenous bacterial strains (three Dietzia strains, two Acinetobacter strains, and one Pseudomonas strain). The survival of the spore-forming Bacillus and Paenibacillus and the non-spore-forming mesophilic Pseudomonas, Dietzia, Alcaligenes, and Microbacterium was detected using a 16S rRNA gene clone library and terminal restriction fragment length polymorphism (T-RFLP) analysis. However, neither bacteria nor bacterial activity was detected in three controls consisting of non-inoculated autoclaved crude oil medium. These results suggest that detection of endogenous bacteria was stimulated by the six inoculated strains. In addition, inoculation with Acinetobacter spp. stimulated detection of Bacillus, while inoculation with Dietzia spp. and Pseudomonas sp. stimulated the detection of more Pseudomonas. In contrast, similar exogenous bacteria stimulated similar endogenous bacteria at the genus level. Based on these results, special emphasis should be applied to evaluate the influence of bacteria capable of surviving autoclaving on the hydrocarbon-degrading abilities of exogenous bacteria, in particular, with regard to bioaugmentation and MEOR. Bioaugmentation and MEOR technologies could then be developed to more accurately direct the growth of specific endogenous bacteria that may then improve the efficiency of treatment or recovery of crude oil.
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Affiliation(s)
| | | | | | | | | | | | | | - Xiao-Lei Wu
- Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing, P.R. China
- * E-mail:
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Nie Y, Tang YQ, Li Y, Chi CQ, Cai M, Wu XL. The genome sequence of Polymorphum gilvum SL003B-26A1(T) reveals its genetic basis for crude oil degradation and adaptation to the saline soil. PLoS One 2012; 7:e31261. [PMID: 22359583 PMCID: PMC3281065 DOI: 10.1371/journal.pone.0031261] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Accepted: 01/04/2012] [Indexed: 11/24/2022] Open
Abstract
Polymorphum gilvum SL003B-26A1T is the type strain of a novel species in the recently published novel genus Polymorphum isolated from saline soil contaminated with crude oil. It is capable of using crude oil as the sole carbon and energy source and can adapt to saline soil at a temperature of 45°C. The Polymorphum gilvum genome provides a genetic basis for understanding how the strain could degrade crude oil and adapt to a saline environment. Genome analysis revealed the versatility of the strain for emulsifying crude oil, metabolizing aromatic compounds (a characteristic specific to the Polymorphum gilvum genome in comparison with other known genomes of oil-degrading bacteria), as well as possibly metabolizing n-alkanes through the LadA pathway. In addition, COG analysis revealed Polymorphum gilvum SL003B-26A1T has significantly higher abundances of the proteins responsible for cell motility, lipid transport and metabolism, and secondary metabolite biosynthesis, transport and catabolism than the average levels found in all other genomes sequenced thus far, but lower abundances of the proteins responsible for carbohydrate transport and metabolism, defense mechanisms, and translation than the average levels. These traits support the adaptability of Polymorphum gilvum to a crude oil-contaminated saline environment. The Polymorphum gilvum genome could serve as a platform for further study of oil-degrading microorganisms for bioremediation and microbial-enhanced oil recovery in harsh saline environments.
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Affiliation(s)
- Yong Nie
- Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing
| | - Yue-Qin Tang
- Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing
| | - Yan Li
- Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing
| | - Chang-Qiao Chi
- Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing
| | - Man Cai
- Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing
| | - Xiao-Lei Wu
- Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing
- * E-mail:
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