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Li Y, Tang Y, Qiang W, Xiao W, Lian X, Yuan S, Yuan Y, Wang Q, Liu Z, Chen Y. Effect of tire wear particle accumulation on nitrogen removal and greenhouse gases abatement in bioretention systems: Soil characteristics, microbial community, and functional genes. ENVIRONMENTAL RESEARCH 2024; 251:118574. [PMID: 38452911 DOI: 10.1016/j.envres.2024.118574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 02/25/2024] [Accepted: 02/26/2024] [Indexed: 03/09/2024]
Abstract
Tire wear particles (TWPs), as predominant microplastics (MPs) in road runoff, can be captured and retained by bioretention systems (BRS). This study aimed to investigate the effect of TWPs accumulation on nitrogen processes, focusing on soil characteristics, microbial community, and functional genes. Two groups of lab-scale bioretention columns containing TWPs (0 and 100 mg g-1) were established. The removal efficiencies of NH4+-N and TN in BRS significantly decreased by 7.60%-24.79% and 1.98%-11.09%, respectively, during the 101 days of TWPs exposure. Interestingly, the emission fluxes of N2O and CO2 were significantly decreased, while the emission flux of CH4 was substantially increased. Furthermore, prolonged TWPs exposure significantly influenced the contents of soil organic matter (increased by 27.07%) and NH4+-N (decreased by 42.15%) in the planting layer. TWPs exposure also significantly increased dehydrogenase activity and substrate-induced respiration rate, thereby promoting microbial metabolism. Microbial sequencing results revealed that TWPs decreased the relative abundance of nitrifying bacteria (Nitrospira and Nitrosomonas) and denitrifying bacteria (Dechloromonas and Thauera), reducing the nitrification rate by 42.24%. PICRUSt2 analysis further indicated that TWPs changed the relative abundance of functional genes related to nitrogen and enzyme-coding genes.
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Affiliation(s)
- Yunqing Li
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Yinghui Tang
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China; School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Weibo Qiang
- Central & Southern China Municipal Engineering Design and Research Institute Co., Ltd., Wuhan, 430010, China
| | - Wenyu Xiao
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Xiaoke Lian
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Shaochun Yuan
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China; Engineering Laboratory of Environmental Hydraulic Engineering of Chongqing Municipal Development and Reform Commission, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Ying Yuan
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Qinyi Wang
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Zhen Liu
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China; Engineering Laboratory of Environmental Hydraulic Engineering of Chongqing Municipal Development and Reform Commission, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Yao Chen
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China; Engineering Laboratory of Environmental Hydraulic Engineering of Chongqing Municipal Development and Reform Commission, Chongqing Jiaotong University, Chongqing, 400074, China.
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Niu Z, Xu M, Guo X, Yan J, Liu M, Yang Y. Uptake of Silver-Containing Nanoparticles in an Estuarine Plant: Speciation and Bioaccumulation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:16075-16085. [PMID: 37842941 DOI: 10.1021/acs.est.3c04774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
Understanding the bioaccumulation of silver-containing nanoparticles (Ag-NPs) with different species, concentrations, and sizes in estuarine plants is critical to their related environmental risk. Herein, the distribution of Ag-NPs in tidewater, sediments, and plants (Scirpus triqueter) of field-constructed mesocosm was investigated, where tidewater was exposed to Ag0-NPs and Ag+ at environmentally relevant concentrations. Particle number concentrations (PNCs) and sizes of Ag-NPs with various species were analyzed using a multistep selective dissolution method followed by the single-particle- inductively coupled plasma mass spectrometry technique. After 30 days of exposure, more than half of Ag0-NPs were dissolved to Ag+ and about 1/4 of Ag+ were transformed into Ag0-/AgCl-NPs in tidewater. Ag-NPs in stems exposed to Ag0-NPs were found to be dominated by metallic Ag, while Ag+ exposure led to more Ag2S-NPs in stems. In roots, 71% and 51% of Ag-NPs were found as Ag2S-NPs for Ag0-NPs and Ag+ treatment groups, respectively. Plant stems had a significantly higher enrichment of Ag-NPs than roots. Based on both random forests and structure equation models, it is suggested that salinity of tidewater can regulate Ag0-NPs in tidewater indirectly by influencing AgCl-NPs in tidewater and further affect the total PNCs of Ag-NPs in plant stems. Moreover, elevated sulfate-reducing bacteria (SRB) result in more Ag2S-NPs in rhizosphere sediments, thereby enhancing the bioaccumulation of Ag-NPs by roots.
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Affiliation(s)
- Zuoshun Niu
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Miao Xu
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Xingpan Guo
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Jia Yan
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Min Liu
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
- Institute of Eco-Chongming, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yi Yang
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
- State Key Laboratory of Estuarine and Coastal Research; Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
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Zhang JB, Dai C, Wang Z, You X, Duan Y, Lai X, Fu R, Zhang Y, Maimaitijiang M, Leong KH, Tu Y, Li Z. Resource utilization of rice straw to prepare biochar as peroxymonosulfate activator for naphthalene removal: Performances, mechanisms, environmental impact and applicability in groundwater. WATER RESEARCH 2023; 244:120555. [PMID: 37666149 DOI: 10.1016/j.watres.2023.120555] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/22/2023] [Accepted: 08/29/2023] [Indexed: 09/06/2023]
Abstract
Herein, biochar was prepared using rice straw, and it served as the peroxymonosulfate (PMS) activator to degrade naphthalene (NAP). The results showed that pyrolysis temperature has played an important role in regulating biochar structure and properties. The biochar prepared at 900°C (BC900) had the best activation capacity and could remove NAP in a wide range of initial pH (5-11). In the system of BC900/PMS, multi-reactive species were produced, in which 1O2 and electron transfer mainly contributed to NAP degradation. In addition, the interference of complex groundwater components on the NAP removal rate must get attention. Cl- had a significant promotional effect but risked the formation of chlorinated disinfection by-products. HCO3-, CO32-, and humic acid (HA) had an inhibitory effect; surfactants had compatibility problems with the BC900/PMS system, which could lead to unproductive consumption of PMS. Significantly, the BC900/PMS system showed satisfactory remediation performance in spiked natural groundwater and soil, and it could solve the problem of persistent groundwater contamination caused by NAP desorption from the soil. Besides, the degradation pathway of NAP was proposed, and the BC900/PMS system could degrade NAP into low or nontoxic products. These suggest that the BC900/PMS system has promising applications in in-situ groundwater remediation.
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Affiliation(s)
- Jun Bo Zhang
- College of Civil Engineering, Tongji University, Shanghai, 200092, China
| | - Chaomeng Dai
- College of Civil Engineering, Tongji University, Shanghai, 200092, China.
| | - Zeyu Wang
- College of Civil Engineering, Tongji University, Shanghai, 200092, China
| | - Xueji You
- College of Civil Engineering, Tongji University, Shanghai, 200092, China
| | - Yanping Duan
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai, 200234, China.
| | - Xiaoying Lai
- Department of Management and Economics, Tianjin University, Tianjin, 300072, China
| | - Rongbing Fu
- College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Yalei Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai, 200092, China
| | | | - Kah Hon Leong
- Department of Environmental Engineering, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, 31900, Kampar, Perak, Malaysia
| | - Yaojen Tu
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Zhi Li
- College of Civil Engineering, Tongji University, Shanghai, 200092, China
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Huang J, Li R, Ma Y, Cao C, Li X, Han T, Cao M. Effects of macrophytes on micro - And nanoplastic retention and cycling in constructed wetlands. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 326:121259. [PMID: 36804147 DOI: 10.1016/j.envpol.2023.121259] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
Macrophytes play the important roles in purifying pollutants of constructed wetlands (CWs), while their effects on CWs exposed to micro/nano plastics are not clear. Therefore, planted and unplanted CWs were established to reveal the impacts of macrophytes (Iris pseudacorus) on the overall performance of CWs under polystyrene micro/nano plastics (PS MPs/NPs) exposure. Results showed that macrophytes effectively enhanced the interception capacities of CWs to PS NPs, and significantly promoted the removal of nitrogen and phosphorus after exposed to PS MPs/NPs. Meanwhile, macrophytes improved the activities of dehydrogenase, urease, and phosphatase. Sequencing analysis showed that macrophytes optimized the composition of microbial communities in CWs and stimulated the growth of functional bacteria involved in nitrogen and phosphorus transformation. Moreover, macrophytes further altered the absolute abundance of nitrogen transformation functional genes (amoA, nxrA, narG and nirS). Functional annotation analysis revealed that macrophytes promoted metabolic functions such as Xenobiotics, Amino acids, Lipids metabolism and Signal transduction, ensuring the metabolic balance and homeostasis of microbes under PS MPs/NPs stress. These results exhibited profound implications for the comprehensive evaluation on the roles of macrophytes in CWs for treating wastewater containing PS MPs/NPs.
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Affiliation(s)
- Juan Huang
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, 211189, China.
| | - Rui Li
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, 211189, China
| | - Yixuan Ma
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, 211189, China
| | - Chong Cao
- Department of Municipal Engineering, College of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Xuan Li
- Jiangsu Environmental Engineering Technology Co., Ltd., Jiangsu Environmental Protection Group Co. Ltd., Nanjing, 210019, China
| | - Tingwei Han
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, 211189, China
| | - Meifang Cao
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, 211189, China
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Guan Q, Qu Y, Zhai Y, Shi W, Zhao M, Huang Z, Ruan W. Enhancement of methane production in anaerobic digestion of high salinity organic wastewater: The synergistic effect of nano-magnetite and potassium ions. CHEMOSPHERE 2023; 318:137974. [PMID: 36708783 DOI: 10.1016/j.chemosphere.2023.137974] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 01/12/2023] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
During high salinity organic wastewater (HSOW) anaerobic digestion treatment, the process of methanogenesis can be severely inhibited in the high salinity environment, and the accumulation of volatile organic acids (VFAs) leads to failure of the anaerobic reaction. In this study, nano-magnetite and KCl were adopted to alleviate the inhibitory effect of high salinity and enhance the HSOW anaerobic digestion performance. The result showed that, under the optimal dosage of 200 mg/L, nano-magnetite addition promoted the anaerobic digestion performance, and the methane production increased by 11.06%. When KCl was added with a dosage of 0.174%, the methane production increased by 98.37%. The simultaneous addition of nano-magnetite (200 mg/L) and KCl showed a synergistic effect on enhancing HSOW anaerobic digestion performance, and the methane production increased by 124.85%. The addition of nano-magnetite and KCl promoted the conversion of VFAs, especially accelerated the degradation of propionic acid and butyric acid, also it promoted the activity of acetate kinase, dehydrogenase and F420, and thereby enhanced the methanogenesis process. This study could provide a new method for enhancing the anaerobic digestion of HSOW.
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Affiliation(s)
- Qiuyue Guan
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Yunhe Qu
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Yujia Zhai
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Wansheng Shi
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, China.
| | - Mingxing Zhao
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Zhenxing Huang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Wenquan Ruan
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, China
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Zhou J, Zhang H, Liu J, Gong L, Yang X, Zuo T, Zhou Y, Wang J, You X, Jia Q, Wang L. Effects of Fe 3O 4 nanoparticles on anaerobic digestion enzymes and microbial community of sludge. ENVIRONMENTAL TECHNOLOGY 2023; 44:68-81. [PMID: 34330190 DOI: 10.1080/09593330.2021.1963324] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/23/2021] [Indexed: 06/13/2023]
Abstract
Fe3O4 nanoparticles (NPs) have potential effects on the anaerobic digestion of excess sludge. The effects of different concentrations of Fe3O4 NPs (0, 100, 200, 400 and 600 mg/L) on enzymes and microorganisms in anaerobic digestion were studied to explore the mechanism of the effect of Fe3O4 NPs on anaerobic digestion. The results showed that 100, 200 and 400 mg/L Fe3O4 NPs could promote anaerobic digestion, and 200 mg/L Fe3O4 NPs had the most obvious promoting effect. The activities of protease, cellulase, dehydrogenase, acetic kinase and coenzyme F420 in the 200 mg/L Fe3O4 NPs group reached 120 U/mg VS, 71.75 U/g VS, 135 U/mL, 94 mol/L, 1.37 umol/g VSS, respectively, which were 3.8, 1.5, 1.2, 1.2 and 1.6 times of the blank group, respectively. However, when the concentration of Fe3O4 NPs reached 600 mg/L, the activities of cellulase, dehydrogenase and acetic kinase were lower than those of the blank group, and anaerobic digestion was inhibited. The above conclusions can also be confirmed by high-throughput sequencing. The abundance of longilinea and ornatilina in the 200 mg/L Fe3O4 NPs group was 8.8% and 4.1% respectively, and methanthrix abundance was 69%, which was more conducive to decomposition acetic acid into CH4.Highlights To explore the effects of Fe3O4 NPS on enzyme activity and microorganisms.200mg/L Fe3O4 NPs could significantly promote the activity of enzyme.200mg/L Fe3O4 NPs could promote the diversity of bacterial and archaeal communities.600mg/L Fe3O4 NPs could inhibit some enzyme activities and microbial community diversity.
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Affiliation(s)
- Jun Zhou
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
| | - Haonan Zhang
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
| | - Jianbo Liu
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
| | - Lei Gong
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
| | - Xiaoqi Yang
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
| | - Tong Zuo
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
| | - Ying Zhou
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
| | - Jin Wang
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
| | - Xiaogang You
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
| | - Qinwei Jia
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
| | - Luyu Wang
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
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Gabriele I, Race M, Papirio S, Papetti P, Esposito G. Phytoremediation of a pyrene-contaminated soil by Cannabis sativa L. at different initial pyrene concentrations. CHEMOSPHERE 2022; 300:134578. [PMID: 35417760 DOI: 10.1016/j.chemosphere.2022.134578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/24/2022] [Accepted: 04/07/2022] [Indexed: 06/14/2023]
Abstract
This study proposes the phytoremediation of a pyrene (PYR)-contaminated soil by Cannabis sativa L. The experimental campaign was conducted along a 60 days period using three different initial PYR concentrations (i.e., 50, 100 and 150 mg kg TS-1 of soil) in 300 mL volume pots under greenhouse conditions (18-25 °C and 45-55% humidity). After 60 days of hemp growth and flourishing, the highest PYR removal reached approximately 95% in planted soil, 35% higher than in the unplanted control. PYR accumulation was observed in both roots and aerial parts of the plant, with a higher PYR uptake at increasing initial PYR concentrations in soil. The initial PYR concentration affected the growth and, thus, the phytoremediation potential of C. sativa L., which was the result of different removal mechanisms. Overall, the lowest initial PYR concentration was the one that resulted in the highest PYR removal. The interaction between the plant roots and microorganisms in rhizosphere was likely associated with PYR removal in this study. The highest DHO activity of 66.26 μg INTF g-1 TS-1 was observed in the soil spiked with 50 mg PYR·kg TS-1.
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Affiliation(s)
- Ilaria Gabriele
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio 43, 03043, Cassino, Italy.
| | - Marco Race
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio 43, 03043, Cassino, Italy
| | - Stefano Papirio
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Via Claudio 21, 80125, Napoli, Italy
| | - Patrizia Papetti
- Department of Economics and Law, Territorial and Products Analysis Laboratory, University of Cassino and Southern Lazio, Via S. Angelo, Folcara, 03043, Cassino, Italy
| | - Giovanni Esposito
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Via Claudio 21, 80125, Napoli, Italy
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Kiamarsi Z, Kafi M, Soleimani M, Nezami A, Lutts S. Evaluating the bio-removal of crude oil by vetiver grass ( Vetiveria zizanioides L.) in interaction with bacterial consortium exposed to contaminated artificial soils. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2021; 24:483-492. [PMID: 34340621 DOI: 10.1080/15226514.2021.1954876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Remediation of crude oil-impacted areas is a major pervasive concern in various environmental conditions. The major aim of this study was to investigate the collaboration of vetiver grass (Vetiveria zizanioides L.) and petroleum hydrocarbon-degrading bacteria to clean up contaminated soils. Vetiver grass and five native bacterial isolates were used in one consortium to remediate contaminated soil by crude oil at various concentrations (2.0, 4.0, 6.0 8.0, 10, and 12.0% woil/wsoil). The presence of isolated bacteria caused a significant (p < 0.05) increment of root-shoot ratio of vetiver in contaminated soils in comparison to non-contaminated soil. The combination of vetiver and bacterial consortium revealed efficient dissipation of more than 30% of low-molecular-weight polycyclic aromatic hydrocarbons (PAHs) and more than 50% of high-molecular-weight PAHs in all crude oil concentrations. The removal of n-alkanes in the simultaneous presence of the bacteria and plant was more than 70.0% at 10.0% of oil concentration, whereas the removals in control were 20.7, 13.7 and 9.2%, respectively. The hydrocarbons dissipation efficiency of applied treatments decreased at 12.0% of contamination. It is concluded that a combination of vetiver grass and the isolated bacteria could be a feasible strategy for remediation of crude oil-polluted soils. Novelty statementDetermination of the responses of vetiver grass under different crude oil concentrations is one of the novelties of the present study, which is helpful for demonstrating plant tolerance on polluted environments. Also, it adds information about the potential of this grass to clean up crude oil-polluted soils solely as well as in the presence of promising selected bacterial strains.
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Affiliation(s)
- Zahra Kiamarsi
- Department of Agrotechnology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mohammad Kafi
- Department of Agrotechnology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mohsen Soleimani
- Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran
| | - Ahmad Nezami
- Department of Agrotechnology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Stanley Lutts
- Life Sciences Institute, Catholic University of Louvain, Louvain-la-Neuve, Belgium
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Li Y, Xie T, Zha Y, Du W, Yin Y, Guo H. Urea-enhanced phytoremediation of cadmium with willow in pyrene and cadmium contaminated soil. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:124257. [PMID: 33127193 DOI: 10.1016/j.jhazmat.2020.124257] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 10/08/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
The phytoremediation of cadmium (Cd) and pyrene (PYR) in agricultural soil with willow was investigated by carrying out a pot-culture experiment in a greenhouse. The soil was incubated with urea 60 days before it was used for this experiment. The concentrations of Cd and PYR in soil and willow, the bioconcentration and transfer factors, the physiological and biochemical responses, and plant biomass production were determined at the end of the experiment. The phytoremediation with willow based on urea application was effective for enhancing the phytoremediation of Cd and PYR contaminated soil. Urea application did not affect the available Cd but increased the accumulation of soil Cd and the plant biomass of different parts of the willow. The removal rate (77.1-89.5%) of PYR in soil was not significantly affected although urea application decreased the accumulation of PYR in willow root and bark. Urea application significantly promoted the uptake of chlorophyll, carotenoid and malondialdehyde by willow leaves. The results of this study will provide scientific information for the effective phytoremediation of Cd in Cd and PYR contaminated soil.
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Affiliation(s)
- Yepu Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Tanchun Xie
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Yidi Zha
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Wenchao Du
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Ying Yin
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
| | - Hongyan Guo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
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Guo J, Wen X. Performance and kinetics of benzo(a)pyrene biodegradation in contaminated water and soil and improvement of soil properties by biosurfactant amendment. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 207:111292. [PMID: 32919193 DOI: 10.1016/j.ecoenv.2020.111292] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/31/2020] [Accepted: 09/02/2020] [Indexed: 06/11/2023]
Abstract
As a hydrophobic pollutant, benzo(a)pyrene (BaP) is difficult to be degraded by microbes due to its poor water solubility. To improve its water solubility, this study harvested a biosurfactant from swine wastewater. The role of the biosurfactant in BaP biodegradation in contaminated water and soil were investigated. The biodegradation kinetics of BaP in contaminated water and the improvement of soil properties were determined. Results showed that critical micelle concentration (CMC) of the biosurfactant was 46.8 mg/L. The biosurfactant has a high pH stability in range of 3-9 and a strong salt stability in NaCl concentration range of 0-20%. At concentrations of 1, 2, 3, 4 and 5 CMC, the biosurfactant increased BaP water solubility by 1.4, 2.6, 4.0, 5.2 and 6.6 times. BaP biodegradation in contaminated water was effectively promoted by the biosurfactant, and the concentrations of BaP in sludge phase decreased to 1.015 mg/L (47.9% decrement) and 0.675 mg/L (65.4% decrement) when the dosed biosurfactant were 1 and 3 CMC, respectively. The biodegradation kinetics of BaP in contaminated water by the biosurfactant fitted well with the two-compartment kinetic model well (R2 > 0.90). For the bioremediation of BaP contaminated soil, adding 0.1%-0.5% (w/w) biosurfactant biodegraded 39.2%-84.8% of BaP, while the control without biosurfactant was 24.2%. In addition, the application of the biosurfactant significantly improved the properties of the contaminated soil, behaved as the increase in microbial quantity, water holding capacity (WHC) and dehydrogenase (DH) activity of the soil. To sum up, the biosurfactant facilitated the BaP biodegradation and can be effectively used in in-site remediation of polycyclic aromatic hydrocarbons (PAHs) (BaP in this study) contaminated water and soil.
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Affiliation(s)
- Junyuan Guo
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu, Sichuan, 610225, China.
| | - Xiaoying Wen
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu, Sichuan, 610225, China
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11
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Jain L, Jajoo A. Protection of PSI and PSII complexes of wheat from toxic effect of anthracene by Bacillus subtilis (NCIM 5594). PHOTOSYNTHESIS RESEARCH 2020; 146:197-211. [PMID: 31755008 DOI: 10.1007/s11120-019-00692-z] [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: 10/01/2019] [Accepted: 11/11/2019] [Indexed: 06/10/2023]
Abstract
Contamination of polycyclic aromatic hydrocarbons (PAHs) in environment indicates a serious problem to the present era. These are carcinogenic and mutagenic compounds and pose a potential risk to photosynthetic organisms. The present study illustrates the protection of Photosystem I and Photosystem II complexes of wheat plant by Bacillus subtilis (NCIM 5594) from toxic effects of anthracene (ANT). Initially, Chl a fluorescence induction curve measurement revealed declined J-I and I-P phase in ANT-treated plants. Efficiency of light absorption, trapping, and electron transport was reduced in ANT-treated plants, while in ANT + Bacillus subtilis (NCIM 5594)-treated plants value of these parameters was restored. Effect of ANT and ANT + Bacillus subtilis (NCIM 5594) on energy conversion of Photosystem I and Photosystem II was measured. Quantum yield of Photosystem I (YI) and Photosystem II (YII) was decreased in the presence of ANT, while these values were recovered in ANT + Bacillus subtilis (NCIM 5594)-treated plants. Reduction in Y(II) was associated with an increase in non-regulated energy dissipation NO. Likewise the reduction of Y(I) was induced due to donor-side and acceptor-side limitation of Photosystem I caused by toxic effect of ANT. Toxic effects of ANT on electron transport rate (ETRI and ETRII) were found to be reduced in ANT + Bacillus subtilis (NCIM 5594)-treated plants. Activation of Cyclic electron flow around Photosystem I in ANT-treated plants was recovered by bacteria. It was concluded that toxic effect of ANT on Photosystem I and Photosystem II complexes was recovered by Bacillus subtilis (NCIM 5594) strain, and thus it is useful strain for crop improvement in ANT-polluted soil.
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Affiliation(s)
- Lakshmi Jain
- School of Life Science, Devi Ahilya University, Indore, 452017, India
| | - Anjana Jajoo
- School of Life Science, Devi Ahilya University, Indore, 452017, India.
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12
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Guo J, Wen X, Yang J, Fan T. Removal of benzo(a)pyrene in polluted aqueous solution and soil using persulfate activated by corn straw biochar. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 272:111058. [PMID: 32669257 DOI: 10.1016/j.jenvman.2020.111058] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 07/02/2020] [Accepted: 07/04/2020] [Indexed: 06/11/2023]
Abstract
An activator, corn straw biochar, was produced and applied in persulfate-based oxidation to remove benzo(a)pyrene (BaP) in polluted aqueous solution and soil. Polluted aqueous solution remediation results showed that at pH 7, approximately 88.4% of BaP was removed by 10 mM of persulfate activated by 1.6 g/L of biochar, and degradation played a dominant role. Polluted soil remediation results demonstrated that the activated persulfate solution (at 9 g/L) by biochar (at 3 wt% of soil) can remove 93.2% of BaP. In remediation of BaP-polluted soil, increasing biochar dosage and persulfate concentration accelerated BaP degradation to some extent, while excessive biochar or persulfate inhibited the degradation of BaP probably due to the unnecessary SO4- consumption. The biochar-activated persulfate oxidation reflected a good performance in tolerating the influences of background electrolytes (such as HCO3-, Cl-, and humic acid (HA)) in soil on BaP remediation. In addition, in the removal of BaP by the oxidation systems activated by biochar, persulfate was proved as a superior oxidant compared to peroxymonosulfate and H2O2, and the removal efficiencies of BaP were 93.2%, 86.5%, and 84.4% under the same treatment condition. To sum up, the biochar-activated persulfate oxidation would be a potential application in remediation of BaP-polluted aqueous solution and soil.
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Affiliation(s)
- Junyuan Guo
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu, Sichuan, 610225, China.
| | - Xiaoying Wen
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu, Sichuan, 610225, China
| | - Jiawei Yang
- National Institute of Measurement and Testing Technology, Chengdu, Sichuan, 610021, China
| | - Ting Fan
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, Sichuan, 610041, China
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13
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Wu Y, Wang S, Cheng F, Guo P, Guo S. Enhancement of electrokinetic-bioremediation by ryegrass: Sustainability of electrokinetic effect and improvement of n-hexadecane degradation. ENVIRONMENTAL RESEARCH 2020; 188:109717. [PMID: 32540569 DOI: 10.1016/j.envres.2020.109717] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
Phytoremediation-assisted electrokinetic-bioremediation is a novel technology for soil remediation. We aimed to study the effects of a plant (ryegrass) on electrokinetic-bioremediation in n-hexadecane-contaminated soil. After treatment for 40 days, the n-hexadecane degradation ratio of electrokinetic-bioremediation-ryegrass (EK-Bio-RG) was 4.86% higher than that of electrokinetic-bioremediation (EK-Bio) (p < 0.05), with a maximum constant degradation rate (107.23 ± 4.62 mg kg-1· d-1). Owing to the improved electrical conductivity, 73.28% of the initial current was maintained on the 40th day in EK-Bio-RG, which was 1.62 times that in EK-Bio. Furthermore, ryegrass reduced the soil zeta potential, which indicated the alleviation of the soil electric double layer compression and prevention of the aggregation of small soil colloids into larger ones. The fine colloidal structure was conducive to mass transfer in electrokinetic-bioremediation. An analysis of the microbial community showed that the degradation of n-hexadecane was mainly attributable to gram-positive bacteria, and a new microbial community was gradually constructed in the rhizosphere, which still metabolized n-hexadecane. The results indicated that the sustainability of the electrokinetic effect was improved combined with ryegrass, and the harmonious micro-environment in the rhizosphere was constructed which furtherly optimized the EK-Bio technology to remediate organics-polluted soil.
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Affiliation(s)
- Yang 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, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Sa Wang
- 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, China.
| | - Fenglian Cheng
- 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, China.
| | - Penghong Guo
- Arizona State University, Tempe, AZ, 85281, USA.
| | - 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, China.
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14
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Li F, Guo S, Wang S, Zhao M. Changes of microbial community and activity under different electric fields during electro-bioremediation of PAH-contaminated soil. CHEMOSPHERE 2020; 254:126880. [PMID: 32957287 DOI: 10.1016/j.chemosphere.2020.126880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 04/20/2020] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Abstract
Electro-bioremediation is a promising technology for remediation of soil contaminated with persistent organic compounds such as polycyclic aromatic hydrocarbons (PAHs). During electro-bioremediation, electrical fields have been shown to increase pollutant degradation. However, it remains unclear whether there is an optimal strength for the electrical field applied that is conductive to the maximum role played by microbes. This study aimed to determine the optimal strength of electric field through the analysis of the effects of different voltages on the microbial community and activity. Four bench-scale experiments with voltages of 0, 1, 2 and 3 V cm-1 were conducted for 90 days in an aged PAH-contaminated soil. The spatiotemporal changes of the soil pH, moisture content and temperature, microbial biomass and community structure, and the degradation extent of PAHs were researched over 90 days. The results indicated that the total microbial biomass and degradation activity were highest at voltages of 2 V cm-1. The concentration of total phospholipid fatty acids, used to quantify soil microbial biomass, reached 65.7 nmol g-1 soil, and the mean degradation extent of PAHs was 44.0%. Similarly, the maximum biomass of actinomycetes, bacteria and fungus also occurred at the voltage of 2 V cm-1. The Gram-positive/Gram-negative and (cy17:0+cy 19:0)/(16:1ω7+18:1ω7) ratios also showed that the intensity of electric field and electrode reactions strongly influenced the microbial community structure. Therefore, to optimize the electro-bioremediation of PAH-contaminated soil, the strength of electric field needs to be selected carefully. This work provides reference for the development of novel electrokinetically enhanced bioremediation processes.
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Affiliation(s)
- Fengmei Li
- 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.
| | - Sa Wang
- 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
| | - Mingyang Zhao
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
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Zhang X, Su C, Liu X, Liu Z, Liang X, Zhang Y, Feng Y. Effect of plant-growth-promoting rhizobacteria on phytoremediation efficiency of Scirpus triqueter in pyrene-Ni co-contaminated soils. CHEMOSPHERE 2020; 241:125027. [PMID: 31606002 DOI: 10.1016/j.chemosphere.2019.125027] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 09/21/2019] [Accepted: 09/30/2019] [Indexed: 06/10/2023]
Abstract
The aim of this study was to investigate whether the plant-growth-promoting rhizobacteria (PGPR) could enhance phytoremediation efficiency of Scirpus triqueter (S.triqueter) in the pyrene-Ni co-contaminated soil. We also expected to reveal the possible mechanism for the affected phytoremediation efficiency induced by PGPR. We used three kinds of contaminated soils (Ni-contaminated soil, pyrene-contaminated soil and pyrene-Ni co-contaminated soil) to conduct this pot study. After harvest, plants growth indicators, polyphenol oxidase (PPO) activity and soil microbial community structure of each treatment were investigated to explain the different dissipation rates of pyrene and removal rates of Ni between treatments with and without PGPR. The results showed that PGPR-inoculated S. triqueter increased dissipation rates of pyrene and removal rates of Ni in all three contaminated soils, among which Ni removal rates in Ni single contaminated soil was elevated most significantly, from 0.895‰ to 8.8‰, increasing nearly 9 folds. However, Ni removal rate efficiency in co-contaminated soil was weakened because more toxic and complicated co-contaminated soil restrained plant growth and Ni absorption. We also observed that co-contamination harmed the soil microbial community more severely than that in single pyrene or Ni contaminated soil through phospholipid fatty acids analysis. Furthermore, dissipation rates of pyrene and removal rates of Ni were found positively correlated to the PPO activity and the abundance of branched and saturated fatty acids reflected by Pearson correlation analysis.
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Affiliation(s)
- Xinying Zhang
- College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Chang Su
- College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Xiaoyan Liu
- College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China.
| | - Zhenguo Liu
- College of Life Sciences, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Xia Liang
- College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Yanming Zhang
- College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Yuwei Feng
- College of Life Sciences, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
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16
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Zhang X, Chen J, Liu X, Zhang Y, Zou Y, Yuan J. Study on removal of pyrene by Agropyron cristatum L. in pyrene-Ni co-contaminated soil. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 22:313-321. [PMID: 31522526 DOI: 10.1080/15226514.2019.1663481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Heavy metals and polycyclic aromatic hydrocarbons (PAHs) co-contamination in the soil is widespread. Phytoremediation is often used to remediate co-contaminated soil, but few studies focused on the effects of nickel on the dissipation and uptake of pyrene in phytoremediation. The dissipation of pyrene, the uptake, and distribution of pyrene in Agropyron cristatum L. (A. cristatum) were investigated in this study in the presence of nickel. The pyrene removal rate in single pyrene-contaminated soil with A. cristatum cultivation (48.97%) was the highest, which was higher than that of the co-contamination (47.88%). This was due to the high soil microbial activity and high dissolved organic matter (DOM) contents. In single pyrene-contaminated soil, pyrene was mainly accumulated in the soluble fraction in shoots and on the cell wall in roots of A. cristatuma. Besides, nickel could promote the adsorption of pyrene on the cell wall. Pyrene in A. cristatum could be transported through the apoplast and symplast, and the pyrene contents in the symplast were 2-3 times that of the apoplast. The uptake of pyrene by A. cristatum included both active absorption and passive transportation. Active absorption involved H+ transport and energy conversion processes, and passive transport was associated with water protein channels.
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Affiliation(s)
- Xinying Zhang
- College of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
| | - Jing Chen
- College of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
- Contaminated Site Remediation Technology Research Center, Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., Shanghai, China
| | - Xiaoyan Liu
- College of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
| | - Yanming Zhang
- College of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
- SGIDI Engineering Consulting (Group) Co., Ltd., Shanghai, China
| | - Yuqi Zou
- College of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
| | - Jingxi Yuan
- College of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
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17
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Wang C, Gu L, Ge S, Liu X, Zhang X, Chen X. Remediation potential of immobilized bacterial consortium with biochar as carrier in pyrene-Cr(VI) co-contaminated soil. ENVIRONMENTAL TECHNOLOGY 2019; 40:2345-2353. [PMID: 29465023 DOI: 10.1080/09593330.2018.1441328] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 02/10/2018] [Indexed: 06/08/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) and potentially toxic trace elements (PTEs) soil contamination have become areas of concern. Bioaugmentation is regarded as an effective bioremediation method, however it is difficult to simultaneously degrade organic compounds and remove PTEs with individual microbial strains. Therefore, the objective of this study was to evaluate the feasibility of using immobilized microbial consortia, including two PAH-degrading bacterial strains (W1 and W2) and a Cr(VI)-reducing bacterium (Y2), for the remediation of pyrene-Cr(VI) co-contaminated soil. Three immobilization methods were investigated: (1) bacterial consortium adsorption onto biochar (BC), (2) bacterial consortium entrapment in alginate beads (AC), (3) bacterial consortium adsorption on biochar and sequential entrapment in alginate beads (BAC). In addition, a free bacterial consortium (FC) was also used for comparison. Ten treatments were designed to illustrate the bioremediation efficiency of the free and immobilized consortia. The results show that treatments AC and BAC resulted in more efficient Cr(VI) removal compared with BC and FC. Pyrene levels in AC and BAC microcosms were reduced from 42.33 ± 3.82 to 11.56 ± 1.37 and 7.48 ± 0.39 mg kg-1, respectively. Bioavailable Cr (VI) in AC and BAC was significantly lower than that in other microcosms after 28 days' incubation. Both AC and BAC microcosms exhibited a higher level of dehydrogenase and fluorescein diacetate hydrolysis activity. Furthermore, soil microbial diversity was higher in AC and BAC microcosms compared with the others. Thus, the entrapped consortia may be useful for bioremediation of pyrene and Cr (VI) without compromising soil ecology.
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Affiliation(s)
- Chuanhua Wang
- a College of Life and Environment Science, Wenzhou University , Wenzhou , People's Republic of China
| | - Lingfeng Gu
- b College of Environment and Chemical Engineering, Shanghai University , Shanghai , People's Republic of China
| | - Shimei Ge
- a College of Life and Environment Science, Wenzhou University , Wenzhou , People's Republic of China
| | - Xiaoyan Liu
- b College of Environment and Chemical Engineering, Shanghai University , Shanghai , People's Republic of China
| | - Xinying Zhang
- b College of Environment and Chemical Engineering, Shanghai University , Shanghai , People's Republic of China
| | - Xiao Chen
- b College of Environment and Chemical Engineering, Shanghai University , Shanghai , People's Republic of China
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18
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Zheng K, Fan J, Hu X, Zhang X, Liu X, Shen J. Distribution by influence factors of pyrene removal in chemical enhancers assisted microbial phytoremediation of Scirpus triqueter in co-contaminated soils. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:1190-1196. [PMID: 31119945 DOI: 10.1080/15226514.2019.1612846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The rehabilitation of soil co-contaminated by heavy metals and polycyclic aromatic hydrocarbons (PAHs) has become a serious global issue. Chemical enhancers and strains are often used to remove PAHs from contaminated soil. In this paper, the effects of chemical enhancers, strain HD-1, and Scirpus triqueter in removing pyrene from co-contaminated soil are studied. In the pot experiment, chemical enhancers and HD-1 were added to the co-contaminated soil. On the 60th day, the plants and soil were taken out for measurement. The result showed that the addition of chemical enhancers and microorganisms (Group PBC) alleviated the inhibition effect of plants on pollution. The accumulation of pyrene in plants of Group PC (chemical enhancers) and Group PBC (chemical enhancers and HD-1) were much higher than those in other groups. Plant enrichment was not the major way to remove pyrene from soil (less than 0.3%). Compared with the contributions of chemical enhancers, HD-1, and Scirpus triqueter, HD-1 had stronger effects on the removal of pyrene (17.23-22.80%). This study indicates that the combination of chemical enhancers, HD-1, and Scirpus triqueter constituted a beneficial composite system, in which the three elements interacted with each other and ultimately achieved the goal of removing pyrene from co-contaminated soil.
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Affiliation(s)
- Kewen Zheng
- College of Environmental and Chemical Engineering, Shanghai University , Shanghai , China
| | - Jiayue Fan
- College of Environmental and Chemical Engineering, Shanghai University , Shanghai , China
| | - Xiaoxin Hu
- SGIDI Engineering Consulting (Group) Co., Ltd , Shanghai , China
| | - Xinying Zhang
- College of Environmental and Chemical Engineering, Shanghai University , Shanghai , China
| | - Xiaoyan Liu
- College of Environmental and Chemical Engineering, Shanghai University , Shanghai , China
| | - Jiayi Shen
- College of Environmental and Chemical Engineering, Shanghai University , Shanghai , China
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Yan Q, Xu Y, Yu Y, Zhu ZW, Feng G. Effects of pharmaceuticals on microbial communities and activity of soil enzymes in mesocosm-scale constructed wetlands. CHEMOSPHERE 2018; 212:245-253. [PMID: 30145416 DOI: 10.1016/j.chemosphere.2018.08.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 08/10/2018] [Accepted: 08/13/2018] [Indexed: 06/08/2023]
Abstract
Cyperus alternifolius based mesocosm-scale constructed wetland was employed to remove pharmaceuticals. We investigated the microbial community composition using phosphor lipid fatty acids (PFLAs) analysis and substrate enzyme activity during long-term exposure to pharmaceuticals in mesocosm-scale constructed wetlands. The results showed that there was no visible inhibition effect of pharmaceuticals on CW substrate enzymes activities in the experimental range (0-500 μg/L). Microbial communities, as revealed by PFLAs, were enhanced by the presence of plants, while the PFLAs content was highest when the pharmaceutical concentration was 10 μg/L or 30 μg/L at CWs. Except for anaerobic bacteria and Saturated fatty acids, the maximum PLFAs levels were reached when the pharmaceuticals were 10 μg/L or 30 μg/L, while Bacteria, G (-), fungal bacteria, Aerobic bacteria and Monounsaturated fatty acids were remarkably affected by high pharmaceuticals (100-500 μg/L). However, the main microbial florae were not changed among the treatments. In this study, the removal efficiencies of the studied pharmaceuticals in Planted (30) was greatest, which could be attributed to the higher microbial biomass. These results indicate that C. alternifolius can phytoremediate pharmaceutical-contaminated waters in CWs. Individual fatty acid cannot be used to represent specific species; therefore, more approaches to species identification such as rRNA-based methods must be included in future studies to better understand the metabolic mechanisms of microorganisms involved in the removal of studied pharmaceuticals and improve the performance of CWs.
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Affiliation(s)
- Qing Yan
- China National Rice Research Institute, Hangzhou, China; Laboratory of Quality & Safety Risk Assessment for Rice (Hangzhou), Ministry of Agriculture, Hangzhou 310006, China.
| | - Yufeng Xu
- College of Energy and Environmental Engineering, Hebei University of Engineering, Handan 056038, China
| | - Yonghong Yu
- China National Rice Research Institute, Hangzhou, China; Laboratory of Quality & Safety Risk Assessment for Rice (Hangzhou), Ministry of Agriculture, Hangzhou 310006, China
| | - Zhi Wei Zhu
- China National Rice Research Institute, Hangzhou, China; Laboratory of Quality & Safety Risk Assessment for Rice (Hangzhou), Ministry of Agriculture, Hangzhou 310006, China.
| | - Guozhong Feng
- China National Rice Research Institute, Hangzhou, China.
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Li R, Wang J, Li H. Isolation and characterization of organic matter-degrading bacteria from coking wastewater treatment plant. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 78:1517-1524. [PMID: 30427792 DOI: 10.2166/wst.2018.427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
As a step toward bioaugmentation of coking wastewater treatment 45 bacteria strains were isolated from the activated sludge of a coking wastewater treatment plant (WWTP). Three strains identified as Bacillus cereus, Pseudomonas synxantha, and Pseudomonas pseudoaligenes exhibited high dehydrogenase activity which indicates a strong ability to degrade organic matter. Subsequently all three strains showed high naphthalene degradation abilities. Naphthalene is a refractory compound often found in coking wastewater. For B. cereus and P. synxantha the maximum naphthalene removal rates were 60.4% and 79.8%, respectively, at an initial naphthalene concentration of 80 mg/L, temperature of 30 °C, pH of 7, a bacteria concentration of 15% (V/V), and shaking speed of 160 r/min. For P. pseudoaligenes, the maximum naphthalene removal rate was 77.4% under similar conditions but at 35 °C.
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Affiliation(s)
- Riqiang Li
- College of Environmental & Resources Sciences, Shanxi University, 92 Wu-cheng Road, Taiyuan 030006, China E-mail:
| | - Jianxing Wang
- College of Environmental & Resources Sciences, Shanxi University, 92 Wu-cheng Road, Taiyuan 030006, China E-mail:
| | - Hongjiao Li
- College of Environmental & Resources Sciences, Shanxi University, 92 Wu-cheng Road, Taiyuan 030006, China E-mail:
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21
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Li J, Shi W, Jiang C, Bai L, Wang T, Yu J, Ruan W. Evaluation of potassium as promoter on anaerobic digestion of saline organic wastewater. BIORESOURCE TECHNOLOGY 2018; 266:68-74. [PMID: 29957292 DOI: 10.1016/j.biortech.2018.06.066] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/16/2018] [Accepted: 06/19/2018] [Indexed: 06/08/2023]
Abstract
In this work, the effect of potassium on mesophilic anaerobic digestion (AD) of saline organic wastewater, which consisted of simulated effluents obtained from heparin sodium production, was studied. The results showed that the addition of potassium chloride (KCl) to saline organic wastewater enhanced the AD efficiency. The optimal dosage was found to be 0.174% when the salt (NaCl) content was 2.0%. Under this condition, the chemical oxygen demand (COD) removal efficiency, dehydrogenase activities, and the viability of microorganisms reached 62.7%, 55.7 TF μL-1, and 78.4%, respectively, which were 115.4%, 77.2%, and 20.3% higher than those without the addition of potassium chloride. The consumption of volatile fatty acids (VFAs) was enhanced during the AD process. Moreover, less humic-like and protein-like residues appeared in the wastewater after AD. Potassium could maintain the morphology of anaerobic microorganism under high salinity and showed a long-term effect.
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Affiliation(s)
- Jing Li
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Wansheng Shi
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Changwang Jiang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Ling Bai
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Tao Wang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Jiangnan Yu
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Wenquan Ruan
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, China.
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Liu X, Hu X, Zhang X, Chen X, Chen J, Yuan X. Effect of Bacillus subtilis and NTA-APG on pyrene dissipation in phytoremediation of nickel co-contaminated wetlands by Scirpus triqueter. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 154:69-74. [PMID: 29454988 DOI: 10.1016/j.ecoenv.2018.02.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 01/23/2018] [Accepted: 02/06/2018] [Indexed: 06/08/2023]
Abstract
A complex mix of organic pollutants and heavy metal made the remediation of contaminated wetlands more difficult. Few research focus on the remediation for pyrene enhanced by chemical reagents and pyrene degrading bacteria in the nickel co-contaminated soil. In this paper, the effect of chemical reagents (nitrilotriacetic acid and alkyl polyglucoside) and Bacillus subtilis on pyrene dissipation in phytoremediation of nickel co-contaminated soil by Scirpus triqueter was investigated. Similar seedlings of Scirpus triqueter were moved to uncontaminated soil and pyrene-nickel co-contaminated soil. The pots (14.8 cm diameter and 8.8 cm height) were set up in greenhouse and treated in different ways. After 60 days, plant biomass, radial oxygen loss (ROL), soil dehydrogenase activity (DHA) and pyrene concentration in soil were determined. Results showed that ROL rate and DHA in different groups was positively correlated with pyrene dissipation from soil. In the process of remediation, chemical reagents might have an indirect slight effect on pyrene dissipation (pyrene dissipation increased 21%) by affecting DHA firstly and redistributing pyrene fractions in the presence of pyrene degrading bacteria. Pyrene degrading bacteria were likely to affect pyrene dissipation by impacting ROL rate and DHA and played a more vital role in contributing to pyrene dissipation (pyrene dissipation increased 45%) from wetland. This study demonstrated that phytoremediation for pyrene in nickel co-contaminated soil by Scirpus triqueter can be enhanced by the application of NTA-APG and pyrene degrading bacteria and they could be reasonably restore the ecological environment of PAH-contaminated wetlands.
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Affiliation(s)
- Xiaoyan Liu
- Laboratory of Environmental Remediation, School of Environmental and Chemical Engineering, Shanghai University, No.99, Shangda Road, Baoshan District, Shanghai 200444, China
| | - Xiaoxin Hu
- Laboratory of Environmental Remediation, School of Environmental and Chemical Engineering, Shanghai University, No.99, Shangda Road, Baoshan District, Shanghai 200444, China
| | - Xinying Zhang
- Laboratory of Environmental Remediation, School of Environmental and Chemical Engineering, Shanghai University, No.99, Shangda Road, Baoshan District, Shanghai 200444, China
| | - Xueping Chen
- Laboratory of Environmental Remediation, School of Environmental and Chemical Engineering, Shanghai University, No.99, Shangda Road, Baoshan District, Shanghai 200444, China.
| | - Jing Chen
- Laboratory of Environmental Remediation, School of Environmental and Chemical Engineering, Shanghai University, No.99, Shangda Road, Baoshan District, Shanghai 200444, China
| | - Xiaoyu Yuan
- Laboratory of Environmental Remediation, School of Environmental and Chemical Engineering, Shanghai University, No.99, Shangda Road, Baoshan District, Shanghai 200444, China
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Shen Y, Li J, Gu R, Yue L, Wang H, Zhan X, Xing B. Carotenoid and superoxide dismutase are the most effective antioxidants participating in ROS scavenging in phenanthrene accumulated wheat leaf. CHEMOSPHERE 2018; 197:513-525. [PMID: 29407813 DOI: 10.1016/j.chemosphere.2018.01.036] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 12/22/2017] [Accepted: 01/10/2018] [Indexed: 05/20/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are a kind of pollutants which could stimulate stress reaction in plant cells. In this study, we systematically verify that PAHs could induce an oxidative stress in plants, and describe their damages on wheat leaf subcellular structure and organelle, together with the contributions of antioxidants working against reactive oxygen species. The observation of transmission electron microscope exhibits that cell structures become plasmolyzed and distorted, and organelles disappear under phenanthrene (a model PAH) treatments. Osmiophilic granules arise with increasing phenanthrene concentrations, displaying the evidence for oxidative stress. As more H2O2 produce, and the accumulation of H2O2 is a fatal reason for cell death under PAH treatments. Through cluster analysis, Pearson correlation coefficient, principal component analysis and redundancy analysis, carotenoid and superoxide dismutase are the two most effective antioxidants to scavenge superoxide radicals among nine major antioxidants (ascorbate, glutathione, polyamines, α-tocopherol, carotenoid, catalases, ascorbate peroxidase, superoxide dismutase and glutathione-S-transferase), glutathione-S-transferase is a potential antioxidant, and Asa-GSH cycle would turn active under higher phenanthrene treatments. Ascorbate peroxidase and α-tocopherol would cause leaf moisture increase. Thus, this work provides better comprehension on the antioxidant performances and their potential application to improving plants' resistance under PAH pollution in the environment.
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Affiliation(s)
- Yu Shen
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China; Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, United States
| | - Jinfeng Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China
| | - Ruochen Gu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China
| | - Le Yue
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China; Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, United States
| | - Hongju Wang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China
| | - Xinhua Zhan
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, People's Republic of China.
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, United States
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24
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Wei J, Zhang X, Liu X, Liang X, Chen X. Influence of root components of celery on pyrene bioaccessibility, soil enzymes and microbial communities in pyrene and pyrene-diesel spiked soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 599-600:50-57. [PMID: 28463701 DOI: 10.1016/j.scitotenv.2017.04.083] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 04/04/2017] [Accepted: 04/11/2017] [Indexed: 06/07/2023]
Abstract
Though phytoremediation is deemed as a promising approach to restore polycyclic aromatic hydrocarbon (PAHs) contaminated sites, studies about how the biodegradation of PAHs is enhanced still remains incomprehensive. Effects of root components on pyrene bioaccessibility, soil enzymes and microbial communities were explored in the paper, and their interactions in simulated pyrene and pyrene-diesel spiked microcosms were tried to give a reasonable explanation. Results indicated that root components enhanced the pyrene removal of bioaccessible and adsorbed fractions by 16.10 and 1.80mgkg-1, respectively, in pyrene-spiked soils at the end of the experiment. By contrast, root components increased the degradation of bioaccessible fraction by only 3.3mgkg-1 in pyrene-diesel spiked soils. Although the bound fractions of pyrene increased over time in treatments without root components, they remained relatively stable, ranging from 0.02 to 0.03mgkg-1, in root components amended treatments. Activities of soil enzymes (polyphenol oxidase, catalase, invertase, urease and alkaline phosphatase) varied differently in response to pollutants and root components. Analysis of phospholipid fatty acids revealed that root components increased the biomass of soil microorganisms and altered the microbial structure. Pearson correlation analysis proved positive correlations between all the microbial subgroups and pyrene removal in pyrene-spiked soils, but the degradation of bioaccessible pyrene was only positively related with microorganisms confirmed by monounsaturated fatty acids in pyrene-diesel spiked soils.
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Affiliation(s)
- Jing Wei
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai, China; Forschungszentrum Jülich GmbH, Agrosphere (IBG-3), Jülich 52428, Germany.
| | - Xinying Zhang
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai, China.
| | - Xiaoyan Liu
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai, China.
| | - Xia Liang
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai, China.
| | - Xueping Chen
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai, China.
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25
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Yan Q, Min J, Yu Y, Zhu Z, Feng G. Microbial community response during the treatment of pharmaceutically active compounds (PhACs) in constructed wetland mesocosms. CHEMOSPHERE 2017; 186:823-831. [PMID: 28826130 DOI: 10.1016/j.chemosphere.2017.08.064] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 07/24/2017] [Accepted: 08/12/2017] [Indexed: 05/12/2023]
Abstract
The presence of pharmaceutically active compounds (PhACs) in wastewater treatment plant effluent poses a potential risk to aquatic ecosystems. Constructed wetlands have recently been used to control PhACs. However, the microbial communities that are involved in these processes have not been comprehensively investigated. This study aimed to evaluate the removal of PhACs and microbial response in constructed wetlands during the treatment of PhACs. The effects of PhACs on bacterial communities in constructed wetland mesocosms were analyzed by Illumina MiSeq sequencing technology. Results indicated that removal efficiencies of PhACs were enhanced over time, and constructed wetlands offer higher removal efficiencies for the PhACs studied compared to conventional wastewater treatment plants. Plants improved microbial richness and diversity while both indices were negatively correlated with PhAC concentrations ranging from 30 to 500 μg/L in constructed wetland mesocosms. The microbial communities of the constructed wetland mesocosms were dominated by Proteobacteria, Acidobacteria, and Bacteroidetes under PhAC exposure, while Desulfobulbus and Treponema were the dominant genera. In particular, Proteobacteria were correlated with PhAC concentrations. Overall, this study provides valuable microbial community ecology data to understand how microbial populations respond to PhAC stress in constructed wetlands.
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Affiliation(s)
- Qing Yan
- China National Rice Research Institute, Hangzhou, China; Laboratory of Quality & Safety Risk Assessment for Rice (Hangzhou), Ministry of Agriculture, Hangzhou, 310006, China.
| | - Jie Min
- China National Rice Research Institute, Hangzhou, China; Laboratory of Quality & Safety Risk Assessment for Rice (Hangzhou), Ministry of Agriculture, Hangzhou, 310006, China
| | - Yonghong Yu
- China National Rice Research Institute, Hangzhou, China; Laboratory of Quality & Safety Risk Assessment for Rice (Hangzhou), Ministry of Agriculture, Hangzhou, 310006, China
| | - Zhiwei Zhu
- China National Rice Research Institute, Hangzhou, China; Laboratory of Quality & Safety Risk Assessment for Rice (Hangzhou), Ministry of Agriculture, Hangzhou, 310006, China.
| | - Guozhong Feng
- China National Rice Research Institute, Hangzhou, China.
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26
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Chen T, Liu X, Zhang X, Hu X, Cao L. Assessment of Pb and pyrene accumulation in Scirpus triqueter assisted by combined alkyl polyglucoside and nitrilotriacetic acid application. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:19194-19200. [PMID: 28664493 DOI: 10.1007/s11356-017-9579-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 06/19/2017] [Indexed: 06/07/2023]
Abstract
To understand the accumulation and uptake of polycyclic aromatic hydrocarbons (PAHs) and heavy metals by plants is an important part of the assessment of phytoremediation for PAHs and heavy metals co-contaminated soil. This study was an investigation of the accumulation and uptake of pyrene and lead (Pb) by Scirpus triqueter under the condition of alkyl polyglucoside (APG) and nitrilotriacetic acid (NTA) combined application. The results indicated that the accumulation of Pb by S. triqueter was significantly improved by NTA and APG addition into the soil. The pyrene accumulation in plant was also increased after application of APG when compared to the control treatment. However, the pyrene accumulation was decreased when APG was applied together with NTA. SEM and TEM images of root surface suggested that more Pb in the soil transferred to the plant by combined application of APG and NTA. More importantly, TEM images of xylem cells of S.triqueter root showed that permeability of cell membrane was improved by application of APG.
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Affiliation(s)
- Tingru Chen
- Yonker Environmental Protection Co., Ltd., Changsha, 410329, China
| | - Xiaoyan Liu
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China.
| | - Xinying Zhang
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China.
| | - Xiaoxin Hu
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Liya Cao
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
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27
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Zhu S, Huang X, Ho SH, Wang L, Yang J. Effect of plant species compositions on performance of lab-scale constructed wetland through investigating photosynthesis and microbial communities. BIORESOURCE TECHNOLOGY 2017; 229:196-203. [PMID: 28113079 DOI: 10.1016/j.biortech.2017.01.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 01/09/2017] [Accepted: 01/11/2017] [Indexed: 06/06/2023]
Abstract
This study focused on the effects of plant compositions on removal rates of pollutants in microcosms through investigating rhizosphere microbial populations, photosynthetic efficiency and growth characteristics. Mixed-culture groups improved the removal efficiency of TN and TP significantly but exhibited lower COD removal rates. Total plant biomasses were improved as the species richness increased, but the N/P content in the plants was mainly affected by the type of species. The mixed-culture groups showed lower photosynthesis rates and oxygen supply generated from roots under high irradiation. Microbial communities of the cultured groups in the rhizosphere exhibited significant differences. According to principal component analysis (PCA), the fungi were the typical microbes of SPA, SPAB, and SPABC, resulted in improvement in nutrient accumulation. These results demonstrated that a mixed culture strategy can represent the overyielding of biomass, promote the photo-protection mechanism, and will further increase the removal rates of pollutants in a constructed wetland.
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Affiliation(s)
- Shishu Zhu
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Xiaochen Huang
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Shih-Hsin Ho
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China.
| | - Li Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Jixian Yang
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China
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28
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Meng F, Chi J. Effect of Potamogeton crispus L. on bioavailability and biodegradation activity of pyrene in aged and unaged sediments. JOURNAL OF HAZARDOUS MATERIALS 2017; 324:391-397. [PMID: 27836406 DOI: 10.1016/j.jhazmat.2016.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 09/25/2016] [Accepted: 11/02/2016] [Indexed: 06/06/2023]
Abstract
In order to clarify the effect of Potamogeton crispus L. (P. crispus) on bioavailability and biodegradation activity of pyrene in aged and unaged sediments, model calculation based on experimental results was carried out. During a 36-day experiment, the dissipation ratio of pyrene was increased by planting but decreased by aging. P. crispus improved the dissipation more significantly in aged sediments (45.9%) than in unaged sediments (17.6%). Results derived from a two-compartment desorption model showed that the decrease of rapidly desorbing fraction of pyrene was in the order of aged sediments without plant (A)>unaged sediments without plant (U)>unaged sediments with plant (UP)>aged sediments with plant (AP). Moreover, the results of biodegradation kinetic model showed that the first-order biodegradation coefficient was in the order of AP>UP>U and A, which was consistent with that of sediment redox potential. These modeling results indicated that planting could enhance the bioavailability (73.9%) and biodegradation activity (277%) of pyrene more significantly in aged sediments as compared to unaged sediments (13.1% and 150%, respectively), which should be the key reasons leading to more significant dissipation increment of pyrene in aged sediments by P. crispus.
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Affiliation(s)
- Fanbo Meng
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Jie Chi
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
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Chen J, Wang C, Shen ZJ, Gao GF, Zheng HL. Insight into the long-term effect of mangrove species on removal of polybrominated diphenyl ethers (PBDEs) from BDE-47 contaminated sediments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 575:390-399. [PMID: 27750135 DOI: 10.1016/j.scitotenv.2016.10.040] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Revised: 10/05/2016] [Accepted: 10/05/2016] [Indexed: 06/06/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs) have become ubiquitous environmental contaminants, particularly in mangrove wetlands. However, little is known about the long-term effect of mangrove plants on PBDE removal from contaminated sediments. A 12-month microcosm experiment was conducted to understand the effect of two mangrove species, namely Avicennia marina (Am) and Aegiceras corniculatum (Ac), on PBDE removal from the sediments spiked with 2000ngg-1 dry weight of BDE-47, and to explore the microbial mechanism responsible for the planting-induced effects on BDE-47 removal. Results showed that planting of mangrove species, either Am or Ac, could accelerate BDE-47 removal from contaminated sediments during the 12months experiment, mainly through enhancing microbial degradation process. In particular, Am sediment had significantly higher BDE-47 degradation efficiency compared with Ac sediment, which may be mainly attributed to higher activities of urease and dehydrogenase, as well as higher 16S rRNA gene copies of total bacteria and organohalide-respiring bacteria (OHRB) in Am sediment. Moreover, planting could shift sediment bacterial community composition and selectively enrich some bacterial genera responsible for PBDE degradation. Such selective enrichment effect of Am on the potential PBDE-degrading bacteria differed distinctly from that of Ac. These results indicated that long-term planting of mangrove species, especially Am, could significantly promote BDE-47 removal from the contaminated sediments by enhancing microbial activity, increasing total bacterial and OHRB abundances and altering bacterial community composition.
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Affiliation(s)
- Juan Chen
- Key Laboratory of Integrated Regulation and Resource Department on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, Jiangsu 210098, PR China; Key Laboratory for Subtropical Wetland Ecosystem Research of Ministry of Education, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Chao Wang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Science, Nanjing, Jiangsu 210008, PR China.
| | - Zhi-Jun Shen
- Key Laboratory for Subtropical Wetland Ecosystem Research of Ministry of Education, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Gui-Feng Gao
- Key Laboratory for Subtropical Wetland Ecosystem Research of Ministry of Education, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Hai-Lei Zheng
- Key Laboratory for Subtropical Wetland Ecosystem Research of Ministry of Education, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
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30
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Chen X, Li H, Liu X, Zhang X, Liang X, He C, Cao L. Combined remediation of pyrene-contaminated soil with a coupled system of persulfate oxidation and phytoremediation with ryegrass. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:20672-20679. [PMID: 27470249 DOI: 10.1007/s11356-016-7311-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Accepted: 07/21/2016] [Indexed: 06/06/2023]
Abstract
The in situ chemical oxidation technology (ISCO) and phytoremediation for PAHs have been studied respectively, but few focus on the feasibility of combining persulfate with ryegrass. This literature revealed the effect of persulfate oxidation on the growth of ryegrass and the removal ratios of pyrene in the couple system of persulfate oxidation and phytoremediation. The results demonstrated that half of pyrene in test soil was oxidized by persulfate in 7 days and then the residual pyrene concentration was decreased to a lower level by ryegrass in the following 2 months in oxidation treatment and drip washing and plants (OWP) and oxidation treatment and drip washing and plants and fertilization (OWFP) treatment. Ryegrass could grow well after persulfate oxidation with the oxidized soil washed by water. Ryegrass in OWP and OWFP treatments had higher ratios of overground and underground biomass. However, the seeds of ryegrass cannot germinate when drip washing was omitted. Pyrene together with residual persulfate changed soil enzyme activities. Drip washing and the growth of ryegrass made soil enzyme activities tend to returned to normal levels. Persulfate oxidation and phytoremediation were compatible to make contributions to the dissipation of pyrene. Persulfate oxidation activated by heat had higher removal efficiency of PAHs and phytoremediation could further decrease the pyrene concentration in spiked soil.
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Affiliation(s)
- Xiao Chen
- Laboratory of Environmental Remediation, College of environmental and chemical engineering, Shanghai University, Shanghai, 200444, China
| | - Hongbing Li
- Laboratory of Environmental Remediation, College of environmental and chemical engineering, Shanghai University, Shanghai, 200444, China
| | - Xiaoyan Liu
- Laboratory of Environmental Remediation, College of environmental and chemical engineering, Shanghai University, Shanghai, 200444, China.
| | - Xinying Zhang
- Laboratory of Environmental Remediation, College of environmental and chemical engineering, Shanghai University, Shanghai, 200444, China.
| | - Xia Liang
- Laboratory of Environmental Remediation, College of environmental and chemical engineering, Shanghai University, Shanghai, 200444, China
| | - Chiquan He
- Laboratory of Environmental Remediation, College of environmental and chemical engineering, Shanghai University, Shanghai, 200444, China
| | - Liya Cao
- Laboratory of Environmental Remediation, College of environmental and chemical engineering, Shanghai University, Shanghai, 200444, China
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31
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Chen T, Liu X, Zhang X, Chen X, Tao K, Hu X. Effect of alkyl polyglucoside and nitrilotriacetic acid combined application on lead/pyrene bioavailability and dehydrogenase activity in co-contaminated soils. CHEMOSPHERE 2016; 154:515-520. [PMID: 27085066 DOI: 10.1016/j.chemosphere.2016.03.127] [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: 08/15/2015] [Revised: 03/10/2016] [Accepted: 03/25/2016] [Indexed: 06/05/2023]
Abstract
At present, few research focus on the phytoremediation for organic pollutants and heavy metals enhanced by surfactants and chelate agents in the combined contaminated soils or sediments. In this study, the effect of a novel combined addition of alkyl polyglucoside (APG) and nitrilotriacetic acid (NTA) into pyrene and lead (Pb) co-contaminated soils on bioaccessiblity of pyrene/Pb and dehydrogenase activities (DHA) was studied. Through the comparison of the results with the alone and combined application, synergistic effect on bioaccessiblity of pyrene and Pb was found while APG and NTA was applied together. Results also indicated a significant promotion on the DHA in mixed addition of APG and NTA. In addition, correlation and principal component analysis were performed to better understand the relationship among APG/NTA, bioaccessiblity of pyrene/Pb and the DHA. Results showed that APG and NTA can affect DHA directly by themselves but also can affect DHA indirectly by changing bioaccessible pyrene and exchangeable Pb.
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Affiliation(s)
- Tingru Chen
- Laboratory of Environmental Remediation, College of Environment and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Xiaoyan Liu
- Laboratory of Environmental Remediation, College of Environment and Chemical Engineering, Shanghai University, Shanghai, 200444, China.
| | - Xinying Zhang
- Laboratory of Environmental Remediation, College of Environment and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Xiao Chen
- Laboratory of Environmental Remediation, College of Environment and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Kaiyun Tao
- Laboratory of Environmental Remediation, College of Environment and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Xiaoxin Hu
- Laboratory of Environmental Remediation, College of Environment and Chemical Engineering, Shanghai University, Shanghai, 200444, China
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32
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Li W, Wang D, Hu F, Li H, Ma L, Xu L. Exogenous IAA treatment enhances phytoremediation of soil contaminated with phenanthrene by promoting soil enzyme activity and increasing microbial biomass. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:10656-10664. [PMID: 26884240 DOI: 10.1007/s11356-016-6170-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 01/22/2016] [Indexed: 05/22/2023]
Abstract
In this study, we aimed to confirm that indole-3-acetic acid promotes plant uptake of phenanthrene (PHE), stimulates the activity of soil enzymes or microflora, and thereby accelerates the dissipation of PHE in soil. Four treatments were evaluated: PHE-contaminated soil planted with (1) ryegrass (T0), (2) ryegrass and supplemented with 1 mg kg(-1) indole-3-acetic acid (IAA) (T1), (3) ryegrass and supplemented with 5 mg kg(-1) IAA (T5), and (4) ryegrass and supplemented with 10 mg kg(-1) IAA (T10). After 30 days, PHE concentrations were lower for all treatments and the removal rate was 70.19, 89.17, 91.26, and 97.07 % for T0, T1, T5, and T10, respectively. PHE was only detected in the roots and not in the shoots. IAA facilitated the accumulation of PHE in the roots, and plants subjected to the T10 treatment had the highest levels. Exogenous IAA stimulated soil peroxidase activity in a dose-dependent manner, whereas soil polyphenoloxidase activity was not significantly increased, except in T10. Soil microbial biomass also increased in response to IAA treatment, particularly in T10. Furthermore, phospholipid fatty acid analysis showed that IAA treatment increased microbial biomass and alleviated environmental stress. Gram-positive bacteria are largely responsible for polycyclic aromatic hydrocarbon degradation, and we found that the ratio of gram-positive to gram-negative bacteria in the soil significantly increased as the IAA concentrations increased (P < 0.05). Correlation analysis indicated that the increase in soil microbial biomass, enzyme activity, and plant uptake of PHE promotes removal of PHE from the soil.
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Affiliation(s)
- Weiming Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
- Nanjing Scientific Institute of Vegetables and Flowers, Nanjing, 210095, People's Republic of China
| | - Dongsheng Wang
- Nanjing Scientific Institute of Vegetables and Flowers, Nanjing, 210095, People's Republic of China
| | - Feng Hu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Huixin Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Lili Ma
- Jiangsu Key Laboratory of Environmental Change and Ecological Construction, College of Geographical Science, Nanjing Normal University, Nanjing, 210095, People's Republic of China
| | - Li Xu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
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Wu J, Feng Y, Dai Y, Cui N, Anderson B, Cheng S. Biological mechanisms associated with triazophos (TAP) removal by horizontal subsurface flow constructed wetlands (HSFCW). THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 553:13-19. [PMID: 26897579 DOI: 10.1016/j.scitotenv.2016.02.067] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 02/09/2016] [Accepted: 02/09/2016] [Indexed: 06/05/2023]
Abstract
Triazophos (TAP) is a widely used pesticide that is easily accumulated in the environment due to its relatively high stability: this accumulation from agricultural runoff results in potential hazards to aquatic ecosystems. Constructed wetlands are generally considered to be an effective technology for treating TAP polluted surface water. However, knowledge about the biological mechanisms of TAP removal is still lacking. This study investigates the responses of a wetland plant (Canna indica), substrate enzymes and microbial communities in bench-scale horizontal subsurface-flow constructed wetlands (HSCWs) loaded with different TAP concentrations (0, 0.1, 0.5 and 5 mg · L(-1)). The results indicate that TAP stimulated the activities of superoxide dismutase (SOD) and peroxidase (POD) in the roots of C. indica. The highest TAP concentrations significantly inhibited photosynthetic activities, as shown by a reduced effective quantum yield of PS II (ΦPS II) and lower electron transport rates (ETR). However, interestingly, the lower TAP loadings exhibited some favorable effects on these two variables, suggesting that C. indica is a suitable species for use in wetlands designed for treatment of low TAP concentrations. Urease and alkaline phosphatase (ALP) in the wetland substrate were activated by TAP. Two-way ANOVA demonstrated that urease activity was influenced by both the TAP concentrations and season, while acidphosphatase (ACP) only responded to seasonal variations. Analysis of high throughput sequencing of 16S rRNA revealed seasonal variations in the microbial community structure of the wetland substrate at the phylum and family levels. In addition, urease activity had a greater correlation with the relative abundance of some functional microbial groups, such as the Bacillaceae family, and the ALP and ACP may be influenced by the plant more than substrate microbial communities.
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Affiliation(s)
- Juan Wu
- State Key Laboratory of Pollution Control and ResourceReuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Yuqin Feng
- State Key Laboratory of Pollution Control and ResourceReuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Yanran Dai
- State Key Laboratory of Pollution Control and ResourceReuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Naxin Cui
- State Key Laboratory of Pollution Control and ResourceReuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Bruce Anderson
- Department of Civil Engineering, Queen's University, Kingston K7L3N6, Canada
| | - Shuiping Cheng
- State Key Laboratory of Pollution Control and ResourceReuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
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Lu YC, Zhang S, Miao SS, Jiang C, Huang MT, Liu Y, Yang H. Enhanced degradation of Herbicide Isoproturon in wheat rhizosphere by salicylic acid. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:92-103. [PMID: 25495335 DOI: 10.1021/jf505117j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This study investigated the herbicide isoproturon (IPU) residues in soil, where wheat was cultivated and sprayed with salicylic acid (SA). Provision of SA led to a lower level of IPU residues in rhizosphere soil compared to IPU treatment alone. Root exudation of tartaric acid, malic acid, and oxalic acids was enhanced in rhizosphere soil with SA-treated wheat. We examined the microbial population (e.g., biomass and phospholipid fatty acid), microbial structure, and soil enzyme (catalase, phenol oxidase, and dehydrogenase) activities, all of which are associated with soil activity and were activated in rhizosphere soil of SA-treated wheat roots. We further assessed the correlation matrix and principal component to figure out the association between the IPU degradation and soil activity. Finally, six IPU degraded products (derivatives) in rhizosphere soil were characterized using ultraperformance liquid chromatography with a quadrupole-time-of-flight tandem mass spectrometer (UPLC/Q-TOF-MS/MS). A relatively higher level of IPU derivatives was identified in soil with SA-treated wheat than in soil without SA-treated wheat plants.
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Wu X, Xu J, Dong F, Liu X, Zheng Y. Responses of soil microbial community to different concentration of fomesafen. JOURNAL OF HAZARDOUS MATERIALS 2014; 273:155-164. [PMID: 24731936 DOI: 10.1016/j.jhazmat.2014.03.041] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 03/10/2014] [Accepted: 03/21/2014] [Indexed: 06/03/2023]
Abstract
Fomesafen degrades slowly in soils and has been linked to crop damage. However, the effect of its residues on soil microbial communities is unknown. The goal of this work was to assess the effect of applying three different doses of fomesafen on microbial community structure and functional diversity as measured by phospholipid fatty acid (PLFA) levels, community-level physiological profiles (CLPPs) and real-time PCR. Our results indicate that applying 100 times the recommended dose of fomesafen (T100) adversely affects soil microbial activity and stresses soil microbial communities as reflected by the reduced respiratory quotient (qCO2, QR). The PLFA analysis showed that high levels of fomesafen treatment (T100) decreased the total amount of PLFAs and both bacterial (both Gram-positive (GP) bacteria and Gram-negative (GN) bacteria) and fungal biomass but increased the microbial stress level. However, the BIOLOG results are not consistent with our other results. The addition of fomesafen significantly increased the average well color development, substrate utilization, and the functional diversity index (H'). Additionally, the abundance of the nifH (N2-fixing bacteria) gene was reduced in the presence of high concentrations of fomesafen (T100). Taken together, these results suggest that the addition of fomesafen can alter the microbial community structure and functional diversity of the soil, and these parameters do not recover even after a 90-day incubation period.
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Affiliation(s)
- Xiaohu Wu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Yuanmingyuan, West Road No. 2, Haidian District, Beijing 100193, China
| | - Jun Xu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Yuanmingyuan, West Road No. 2, Haidian District, Beijing 100193, China
| | - Fengshou Dong
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Yuanmingyuan, West Road No. 2, Haidian District, Beijing 100193, China
| | - Xingang Liu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Yuanmingyuan, West Road No. 2, Haidian District, Beijing 100193, China
| | - Yongquan Zheng
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Yuanmingyuan, West Road No. 2, Haidian District, Beijing 100193, China.
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Zhang X, Chen L, Liu X, Wang C, Chen X, Xu G, Deng K. Synergic degradation of diesel by Scirpus triqueter and its endophytic bacteria. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:8198-8205. [PMID: 24920429 DOI: 10.1007/s11356-014-2807-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 03/17/2014] [Indexed: 06/03/2023]
Abstract
The endophytic bacterium isolated from Scirpus triqueter was proved to be an oil-degraded bacterium. A pot experiment was conducted to investigate the removal ratio of diesel under the combined effect of oil-degraded microorganism (Pseudomonas sp. J4AJ) and S. triqueter. The effect of diesel on plant growth parameters, soil enzymes and microbial community was assessed after 60 days. The results showed that the soils which were planted with S. triqueter and inoculated with J4AJ displayed the highest removal ratio (54.51 ± 0.15%) after 60-day experiment. However, the removal ratio of J4AJ-treated soils was 38.97 ± 0.55%. Diesel was toxic to S. triqueter, as evidenced by growth inhibition during the experimental period. However, the plant height and stem biomass in the soils inoculated with J4AJ significantly increased. The combined effect of S. triqueter and J4AJ improved the enzyme activities of the catalase and dehydrogenase in the contaminated soil. The diversity index in soils under the effect of S. triqueter combined with J4AJ was lower than that of the other soil samples. The principal analysis of phospholipid fatty acid signatures revealed that the combined effect of S. triqueter and J4AJ increased the differences of soil microbial community structure with the other treatments.
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Affiliation(s)
- Xinying Zhang
- College of Environment and Chemical Engineering, Shanghai University, 200444, Shanghai, China
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Wei J, Liu X, Wang Q, Wang C, Chen X, Li H. Effect of rhizodeposition on pyrene bioaccessibility and microbial structure in pyrene and pyrene-lead polluted soil. CHEMOSPHERE 2014; 97:92-97. [PMID: 24188625 DOI: 10.1016/j.chemosphere.2013.09.105] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Revised: 09/27/2013] [Accepted: 09/28/2013] [Indexed: 06/02/2023]
Abstract
Phytoremediation for PAH hydrocarbons has been widely studied, but few focus on the influence of rhizodeposition on their bioaccessibility during the process. This literature revealed the effect of celery (Apium graveolens) rhizodeposition on pyrene fractionation and bioaccessibility in simulated pyrene and pyrene-lead contaminated microcosms. A sequential extraction methodology was used to quantify different morphological fractions of pyrene in the soil, and phospholipid fatty acid (PLFA) pattern to monitor shifts in microbial populations. Bioaccessible pyrene accounted for the largest proportion of the total removal. Biodegradation of both bioaccessible and associated pyrene fractions was enhanced by celery rhizodeposition in pyrene spiked soils. However, rhizodeposition promoted the removal of bioaccessible rather than associated fractions in pyrene-lead spiked soils. In contrast, the bound fraction increased over time in pyrene spiked soils without amendment, but kept relatively stable in amended microcosms. It was found that rhizodeposition facilitated the reproduction of all the subgroups of soil microorganisms through PLFA analysis. Although all the subgroups contributed to the removal of bioaccessible pyrene, only abundances of unsaturated and cyclic fatty acids were positively correlated with the removal of associated pyrene. These findings provide meaningful insights into the microecological mechanisms involved in the phytoremediation of PAH polluted sites.
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Affiliation(s)
- Jing Wei
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Xiaoyan Liu
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China.
| | - Qian Wang
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Chuanhua Wang
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Xueping Chen
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Hongbing Li
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China
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Wei J, Liu X, Zhang X, Chen X, Liu S, Chen L. Rhizosphere effect of Scirpus triqueter on soil microbial structure during phytoremediation of diesel-contaminated wetland. ENVIRONMENTAL TECHNOLOGY 2014; 35:514-520. [PMID: 24600892 DOI: 10.1080/09593330.2013.836549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Though phytoremediation has been widely used to restore various contaminated sites, it is still unclear how soil microbial communities respond microecologically to plants and pollutants during the process. In this paper, batch microcosms imitating in situ phytoremediation of petroleum-contaminated wetland by Scirpus triqueter were set up to monitor the influence of plant rhizosphere effect on soil microbes. Palmitic acid, one of the main root exudates of S. triqueter, was added to strengthen rhizosphere effect. Abundances of certain microbial subgroups were quantified by phospholipid fatty acid profiles. Results showed that diesel removal extents were significantly higher in the rhizosphere (57.6 +/-4.2-65.5 +/- 6.9%) than those in bulk soil (27.8 +/-6.5-36.3 +/- 3.2%). In addition, abundances of saturated, monounsaturated, and polyunsaturated fatty acids were significantly higher (P < 0.05) in planted soil than those in the bulk soil. When it was less than 15,000 mg diesel kg soil-1, increasing diesel concentration led to higher abundances of fungi, Gram-positive and Gram-negative bacteria. The addition of palmitic acid amplified the rhizosphere effect on soil microbial populations and diesel removal. Principal component analysis revealed that plant rhizosphere effect was the dominant factor affecting microbial structure. These results provided new insights into plant-microbe-pollutant coactions responsible for diesel degradation, and they were valuable to facilitate phytoremediation of diesel contamination in wetland habitats.
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Affiliation(s)
- Jing Wei
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China
| | - Xiaoyan Liu
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China
| | - Xinying Zhang
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China
| | - Xueping Chen
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China
| | - Shanshan Liu
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China
| | - Lisha Chen
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China
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Zhang X, Liu X, Chai W, Wei J, Wang Q, Li B, Li H. The use of proteomic analysis for exploring the phytoremediation mechanism of Scirpus triqueter to pyrene. JOURNAL OF HAZARDOUS MATERIALS 2013; 260:1001-1007. [PMID: 23892167 DOI: 10.1016/j.jhazmat.2013.06.068] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Accepted: 06/26/2013] [Indexed: 06/02/2023]
Abstract
Scirpus triqueter has been reported to be an effective phytoremediation plant for pyrene dissipation. The study of S. triqueter in response to pyrene is crucial to understand the mechanism of phytoremediation. To gain a certain extent understanding of S. triqueter in response to pyrene, S. triqueter seedlings were exposed to 50 mg kg(-1) pyrene and a comparative proteomic analysis of total proteins was performed. 37 and 55 proteins were significantly differentially expressed in the shoot and root of S. triqueter upon exposure, respectively. 24 proteins (17 proteins in shoot and 7 proteins in root) were identified on the basis of the homology of their peptide profiles with existing protein sequences using mass spectrometry analysis. Analysis of protein expression patterns revealed that proteins in shoot associated with photosynthesis, defense, energy and matter metabolism, coenzyme metabolism and protein metabolism. Moreover, the proteins related photosynthesis accounted for more than 70% of the identified proteins. The proteins in root associated with stress, defense, energy metabolism, protein modification and carbohydrate metabolism. Pyrene appears to have an important deleterious effect on primary carbon metabolism, the synthesis of proteins and signal transduction. The present study demonstrates the use of proteomic approach to help us understand the phytoremediation mechanism of S. triqueter.
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Affiliation(s)
- Xinying Zhang
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
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Stefanis C, Alexopoulos A, Voidarou C, Vavias S, Bezirtzoglou E. Principal methods for isolation and identification of soil microbial communities. Folia Microbiol (Praha) 2012; 58:61-8. [PMID: 22791233 DOI: 10.1007/s12223-012-0179-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2012] [Accepted: 06/25/2012] [Indexed: 12/18/2022]
Abstract
Soil microbial populations play crucial role in soil properties and influence below-ground ecosystem processes. Microbial composition and functioning changes the soil quality through decomposition of organic matter, recycling of nutrients, and biological control of parasites of plants. Moreover, the discovery that soil microbes may translate into benefits for biotechnology, management of agricultural, forest, and natural ecosystems, biodegradation of pollutants, and waste treatment systems maximized the need of scientists for the isolation and their characterization. Operations such as the production of antibiotics and enzymic activities from microorganisms of soil constitute objectives of industry in her effort to cope with the increase of population of earth and disturbance of environment and may ameliorate the effects of global climate change. In the past decades, new biochemical and molecular techniques have been developed in our effort to identify and classify soil bacteria. The goal of measuring the soil microbial diversity is difficult because of the limited knowledge about bacteria species and classification through families and orders. Molecular techniques extend our knowledge about microbial diversity and help the taxonomy of species. Measuring and monitoring soil microbial communities can lead us to better understanding of their composition and function in many ecosystem processes.
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Affiliation(s)
- Christos Stefanis
- Department of Food Science and Technology, Laboratory of Microbiology, Biotechnology and Hygiene, Democritus University of Thrace, 193 Pandazidou Str, 68200, Orestiada, Greece.
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