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Yan Y, Shen K, Fan W, Kang X, Lu Q. Single and Competitive Adsorption of Naphthalene, Phenanthrene, and Pyrene on Polystyrene Nanofibers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 38306395 DOI: 10.1021/acs.langmuir.3c03090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2024]
Abstract
In this investigation, polystyrene (PS) nanofibers were prepared by electrospinning for the adsorption of naphthalene (Nap), phenanthrene (Phe), and pyrene (Pyr) from an aqueous solution. Surface morphology and physicochemical characteristics of PS nanofibers were analyzed using Fourier transform infrared spectroscopy (FT-IR) and point-of-zero-charge calorimetry (pHpzc). The effects of pH, ion concentration, and temperature on the adsorption were also investigated. The adsorption mechanism of target pollutants on PS nanofibers was investigated by a batch adsorption method. The adsorption kinetic studies showed that the adsorption of the three polycyclic aromatic hydrocarbons (PAHs) on PS nanofibers conformed to the pseudo-second-order kinetic model in both single and ternary systems. Meanwhile, in a single system, the three PAHs adsorbed on nanofibers were controlled by both intraparticle diffusion and liquid film diffusion, whereas the adsorption of Nap in a ternary system was controlled mainly by intraparticle diffusion, and the adsorption of Phe and Pyr was controlled mainly by liquid film diffusion. The isotherm data indicated that the Freundlich model performed better than the Langmuir model for the adsorptions of Nap, Phe, and Pyr on PS nanofibers in both the single system and the ternary system. Due to competitive adsorption, the adsorption capacities of Nap and Pyr on PS nanofibers decreased from 105.816 and 19.098 mg g-1 in the single system to 23.626 and 12.126 mg g-1 in the ternary system, but the adsorption of Phe was not affected. π-π interactions and pore filling may be jointly involved in the adsorption of PAHs on PS nanofibers.
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Affiliation(s)
- Yan Yan
- School of Public Health of Southeast University, Laboratory of Environment and Biosafety Research Institute of Southeast University in Suzhou, Suzhou 215123, China
| | - Kangwei Shen
- China Key Laboratory of Child Development and Learning Science, Ministry of Education, School of Biological Sciences & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Wei Fan
- China Key Laboratory of Child Development and Learning Science, Ministry of Education, School of Biological Sciences & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Xuejun Kang
- China Key Laboratory of Child Development and Learning Science, Ministry of Education, School of Biological Sciences & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Qing Lu
- China Key Laboratory of Child Development and Learning Science, Ministry of Education, School of Biological Sciences & Medical Engineering, Southeast University, Nanjing 210096, China
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Jiang H, Liu Q, Zhang H, Yang P, You T. A self-powered photoelectrochemical oxytetracycline aptasensor: An integrated heterojunction photoanode of metal-organic framework derived ZnO nanopolyhedra/graphitic carbon nitride with high carrier density. J Colloid Interface Sci 2023; 632:35-43. [PMID: 36403375 DOI: 10.1016/j.jcis.2022.11.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 10/28/2022] [Accepted: 11/06/2022] [Indexed: 11/13/2022]
Abstract
The development of effective strategies for the detection of oxytetracycline (OTC) in soil is of great importance for preserving agri-environmental safety and human health. Herein, a novel photoactive material of metal-organic framework (MOF) derived ZnO nanopolyhedra/graphitic carbon nitride (ZnO/g-C3N4) heterojunction was designed by mixing calcination of zeolite imidazole framework-8 (ZIF-8) and melamine. A self-powered photoelectrochemical aptasensor for the sensitive and selective detection of OTC in soil was proposed using ZnO/g-C3N4 as the photoanode. The photoactivity of the MOF derived ZnO nanopolyhedra was regulated effectively by the introduction of g-C3N4, which resulted in a 7-fold increase in the photocurrent of the ZnO nanopolyhedra at a bias potential of 0 V. It was assigned to the higher carrier density of ZnO/g-C3N4. By virtue of the amplified photocurrent of ZnO/g-C3N4, the specificity of the OTC aptamer and the anti-interference ability of the self-powered sensing method, the designed aptasensor demonstrated the advantages of a wide linear range (0.005-200 nM), low limit of detection (1.49 × 10-3 nM), good selectivity and good reproducibility. For real soil sample analysis, satisfactory recoveries were obtained and further verified by ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS).
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Affiliation(s)
- Huihui Jiang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Agriculture Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Qian Liu
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Agriculture Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Hang Zhang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Agriculture Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Peilin Yang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Agriculture Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Tianyan You
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Agriculture Engineering, Jiangsu University, Zhenjiang 212013, China.
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Hu J, Tang X, Qi M, Cheng J. New Models for Estimating the Sorption of Sulfonamide and Tetracycline Antibiotics in Soils. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16771. [PMID: 36554653 PMCID: PMC9778684 DOI: 10.3390/ijerph192416771] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 12/09/2022] [Accepted: 12/11/2022] [Indexed: 06/17/2023]
Abstract
Sulfonamides (SAs) and tetracyclines (TCs) are two classes of widely used antibiotics. There is a lack of easy models for estimating the parameters of antibiotic sorption in soils. In this work, a dataset of affinity coefficients (Kf and Kd) of seven SA/TC antibiotics (i.e., sulfachlorpyridazine, sulfamethazine, sulfadiazine, sulfamethoxazole, oxytetracycline, tetracycline, and chlortetracycline) and associated soil properties was generated. Correlation analysis of these data showed that the affinity coefficients of the SAs were predominantly affected by soil organic matter and cation exchange capacity, while those of the TCs were largely affected by soil organic matter and pH. Pedotransfer functions for estimating Kf and Kd were built by multiple linear regression analysis and were satisfactorily validated. Their performances would be better for soils having higher organic matter content and lower pH. These pedotransfer functions can be used to aid environmental risk assessment, prioritization of antibiotics and identification of vulnerable soils.
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Affiliation(s)
- Jinsheng Hu
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Xiangyu Tang
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Minghui Qi
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Jianhua Cheng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
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Zhang X, Zhang X, Cui H, Zhao R, Zhao M, Wei Z. Characteristics of oxytetracycline stress-sensitive microbe-dissolved organic matter component interactions during composting. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 311:119975. [PMID: 35988676 DOI: 10.1016/j.envpol.2022.119975] [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: 05/18/2022] [Revised: 08/09/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Dissolved organic matter (DOM) has important impacts on the transportation of antibiotics through chemical and biological processes in composting. The interaction between DOM and antibiotics is reciprocal. The interaction between DOM ligands and antibiotics could be characterized based on a technique combining parallel factor analysis (PARAFAC) and microbial community structure analysis. However, PARAFAC cannot reveal the dynamic changes in each DOM peak in one PARAFAC component under antibiotic stress. In this study, two-dimensional correlation spectroscopy (2DCOS) combined with PARAFAC and bacterial community diversity analyses were employed to reveal the effects of oxytetracycline (OTC) stress and the key microorganisms on the transformation of different fluorescent peaks from DOM PARAFAC components during chicken manure composting. The results showed that OTC inhibits the transformation between DOM PARAFAC components by inhibiting the core microbial activities involved in the transformation of DOM components. Protein-like components (C1 and C2) were more sensitive to OTC residue, and components with a high humification degree promoted the degradation of OTC. The interaction between special DOM PARAFAC components and certain bacteria affects the degradation of OTC. The DOM PARAFAC components A2(C1), B1(C2), B2(C2) and Z1(C4) enhanced OTC degradation by stimulating the genera Pseudomonas, Glycomyces and Hyphomicrobium. With these promising results, the true effect of DOM PARAFAC components on the degradation of OTC can be revealed, which is helpful for addressing antibiotic contamination to improve the bioavailability of compost products.
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Affiliation(s)
- Xu Zhang
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China
| | - Xinlin Zhang
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China
| | - Hongyang Cui
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Ran Zhao
- Environmental Monitoring Center of Heilongjiang Province, Harbin, 150056, China
| | - Meiyang Zhao
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China
| | - Zimin Wei
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China.
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Li J, Guo K, Cao Y, Wang S, Song Y, Zhang H. Enhance in mobility of oxytetracycline in a sandy loamy soil caused by the presence of microplastics. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 269:116151. [PMID: 33280909 DOI: 10.1016/j.envpol.2020.116151] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/09/2020] [Accepted: 11/22/2020] [Indexed: 06/12/2023]
Abstract
Microplastics are emerging contaminants and widely distributed in the environment. They are considered as a vector of numerous organic pollutants including antibiotics in aquatic environments and thereby influence their distribution and transport behaviors. However, the effects of microplastics on the environmental behavior of antibiotics in soils remain largely unclear. In this paper, the influence of polyamide (PA) microplastics on sorption and transport of the selected antibiotic [oxytetracycline (OTC)] in a sandy loamy soil was studied by performing batch and column experiments. Results show that PA microplastics increase the pH of reaction systems, which contributes to OTC sorption onto the tested soils. However, altering pH is not the key influencing mechanism because the overall sorption capacity decreases slightly after adding PA microplastics, which can be attributed to the dilution effect. Reduction of OTC sorption by adding microplastics promotes the migration of OTC in the tested soil, which could be demonstrated by the results of column experiments that the breakthrough of OTC occurs earlier with an increasing content of PA microplastics. According to the fitting parameters of HYDRUS-1D model, PA microplastics can affect the transport of OTC by altering the soil pore structure and dispersion coefficient. These results provide new insight into the interaction between microplastics and organic pollutants in soil environments.
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Affiliation(s)
- Jia Li
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China.
| | - Kai Guo
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Yingsong Cao
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Shengsen Wang
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Yang Song
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Haibo Zhang
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental and Resource Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China
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Jiang Y, Zhang Q, Deng X, Nan Z, Liang X, Wen H, Huang K, Wu Y. Single and competitive sorption of sulfadiazine and chlortetracycline on loess soil from Northwest China ☆. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 263:114650. [PMID: 33618482 DOI: 10.1016/j.envpol.2020.114650] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 03/31/2020] [Accepted: 04/20/2020] [Indexed: 06/12/2023]
Abstract
The fate of veterinary antibiotics (VAs) in soil environment is determined by the hydrophilic performance and solubility of VAs and the type of soil. In this study, sulfadiazine (SDZ) and chlortetracycline (CTC) were selected as target pollutants, and a batch sorption method was used to find out the single and sorption competitive behavior and mechanism of the target pollutants on loess soil. Kinetic studies showed the apparent sorption equilibrium was reached 0-6 h for CTC and 0-12 h for SDZ. The sorption kinetics of VAs on loess soil were fitted well with a pseudo-second order kinetic model. Sorption thermodynamic data indicated the isotherm sorption of both SDZ and CTC on loess soil was fitted well with Freundlich isothermal (R2, 0.960-0.975) and linear models (R2, 0.908-0.976). The sorption affinity of CTC (Kd, 290-1620 L/kg for CTC) was much greater than that of SDZ (Kd, 0.6-4.9 L/kg for SDZ). The results also suggest that SDZ may be easily mobilized or leached from loess soil at neutral and alkaline pH, while CTC may be easily mobilized or leached at neutral pH. The sorption of each single target pollutant on the outer layer complex decreased with increasing ionic strength. Higher initial concentrations resulted in greater sorption capacity of target pollutants on loess soil increased. The sorption capacities of CTC and SDZ in the mixed system were lower than the sorption capacity of each single system, showing a competitive sorption behavior of CTC and SDZ during the sorption process. Overall, CTC showed the highest sorption potential in loess soil, whereas SDZ showed a high leaching risk in loess soil. These findings contribute to understanding the fate of different VAs in loess in the natural environment.
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Affiliation(s)
- Yufeng Jiang
- College of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, China.
| | - Qian Zhang
- College of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, China
| | - Xueru Deng
- College of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, China
| | - Zhijiang Nan
- College of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, China
| | - Xinru Liang
- College of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, China
| | - Hong Wen
- College of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, China
| | - Kui Huang
- College of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, China
| | - Yingqin Wu
- Key Laboratory of Petroleum Resources Research, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
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Liu X, Zhang H, Luo Y, Zhu R, Wang H, Huang B. Sorption of oxytetracycline in particulate organic matter in soils and sediments: Roles of pH, ionic strength and temperature. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 714:136628. [PMID: 31981869 DOI: 10.1016/j.scitotenv.2020.136628] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 12/24/2019] [Accepted: 01/08/2020] [Indexed: 06/10/2023]
Abstract
Particulate organic matter (POM) is a fraction of organic matter with dissimilar properties in different soils. POM isolated from soils and sediments (wetland, oil waste field, farmlands and aquaculture pond sediment) was used to study its sorption behavior on the antibiotic oxytetracycline (OTC). Impacts of solution pH, ionic strength and temperature on the OTC sorption were studied. The sorption rates of OTC in POM from wetland (POM-w) and farmland (POM-f1, POM-f2) were rapid during the first 3 h and gradually decreased with reaction time until reaching the equilibrium. Linear sorption occurred from 3 to 12 h in POM from oil waste field land (POM-o) and aquaculture pond sediment (POM-a). The organic carbon normalized partition coefficient (koc) varied from 215.0 to 4493.6 L kg-1, and it was nearly 10× higher for the POM-w, POM-f1 and POM-f2 than in the POM-o and POM-a. Sorption of OTC by POM exhibited strong pH dependence. Ionic factors affected OTC sorption in POM-f1, POM-f2 and POM-a. The sorption capacity declined >50% in a solution with Ca2+ compared to other ions with similar ionic strength. Sorption thermodynamics showed an entropy increasing and endothermic progress during the OTC sorption in POM, implying a spontaneous sorption process. Several mechanisms were involved in OTC sorption in POM, including hydrogen bonding, cation exchange, hydrophobic partitioning and surface complexation.
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Affiliation(s)
- Xinghua Liu
- Institute of Animal Science and Veterinary Medicine Shandong Academy of Agricultural Sciences, Key Laboratory of Livestock Disease Control and Breeding, Jinan, Jinan 250100, China; Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai 264003, China
| | - Haibo Zhang
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental and Resource Sciences, Zhejiang A & F University, Hangzhou 311300, China.
| | - Yongming Luo
- Institute of Soil Science, Chinese Academy of Sciences, Key Laboratory of Soil Environment and Pollution Remediation, Nanjing 210008, China; Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai 264003, China.
| | - Rongsheng Zhu
- Institute of Animal Science and Veterinary Medicine Shandong Academy of Agricultural Sciences, Key Laboratory of Livestock Disease Control and Breeding, Jinan, Jinan 250100, China
| | - Huaizhong Wang
- Institute of Animal Science and Veterinary Medicine Shandong Academy of Agricultural Sciences, Key Laboratory of Livestock Disease Control and Breeding, Jinan, Jinan 250100, China
| | - Baohua Huang
- Institute of Animal Science and Veterinary Medicine Shandong Academy of Agricultural Sciences, Key Laboratory of Livestock Disease Control and Breeding, Jinan, Jinan 250100, China
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Elbana T, Gaber HM, Kishk FM. Soil Chemical Pollution and Sustainable Agriculture. WORLD SOILS BOOK SERIES 2019. [DOI: 10.1007/978-3-319-95516-2_11] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Alizadeh S, Prasher SO, ElSayed E, Qi Z, Patel RM. Effect of biochar on fate and transport of manure-borne estrogens in sandy soil. J Environ Sci (China) 2018; 73:162-176. [PMID: 30290865 DOI: 10.1016/j.jes.2018.01.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 01/25/2018] [Accepted: 01/25/2018] [Indexed: 06/08/2023]
Abstract
The feasibility of using two types of biochars to reduce steroid hormone pollution from poultry and swine manure application on agricultural land was evaluated. The sorption affinity and desorption resistance of softwood and hardwood biochars were also determined for two estrogen hormones, 17β-estradiol (E2) and its primary metabolite estrone (E1). The softwood and hardwood biochars demonstrated high retention capacity for both estrogens. The effective distribution coefficient (Kdeff) of soil-softwood-derived biochar (SBS450) was significantly higher than soil-hardwood-derived biochar (SBH750), indicating the stronger sorption affinity of SBS450 for estrogens. To validate the laboratory results, a field lysimeter experiment was conducted to study the fate and transport of E2 and E1 in soil and leachate in the presence of 1% softwood-biochar (BS450) in topsoil and to compare it with soil without any amendments. The spatio-temporal distribution of both estrogens was monitored at four depths over a 46-day period. The lysimeters, in which the surface layer of soil was amended with biochar, retained significantly higher concentrations of both estrogen hormones. Although they leached through the soil and were detected in leachates, collected at 1.0m depth, the concentrations were significantly lower in the leachate collected from biochar-amended lysimeters. The result confirmed the efficacy of biochar amendment as a remediation technique to alleviate the manure-borne hormonal pollution of groundwater.
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Affiliation(s)
- Sanaz Alizadeh
- Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue H9X3V9, Quebec, Canada.
| | - Shiv O Prasher
- Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue H9X3V9, Quebec, Canada.
| | - Eman ElSayed
- Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue H9X3V9, Quebec, Canada; Department of Plant Protection, Faculty of Agriculture, Zagazig University, Egypt
| | - Zhiming Qi
- Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue H9X3V9, Quebec, Canada
| | - Ramanbhai M Patel
- Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue H9X3V9, Quebec, Canada
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Cao J, Wang C, Dou Z, Liu M, Ji D. Hyphospheric impacts of earthworms and arbuscular mycorrhizal fungus on soil bacterial community to promote oxytetracycline degradation. JOURNAL OF HAZARDOUS MATERIALS 2018; 341:346-354. [PMID: 28802245 DOI: 10.1016/j.jhazmat.2017.07.038] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 07/15/2017] [Accepted: 07/17/2017] [Indexed: 06/07/2023]
Abstract
A two-compartment microcosm was used to investigate the role of arbuscular mycorrhizal fungus (AMF) hyphae and earthworm in altering soil microbial community and OTC degradation. Treatments comprised OTC-contaminated hyphal compartments with or without AMF hyphae and with or without earthworms. Results indicated both AMF hyphae and earthworms accelerated OTC degradation; two degradation products were identified as 4-epi-oxytetracycline (EOTC) and 2-acetyl-2-decarboxamido-oxytetracycline (ADOTC). Q-PCR results indicated that both earthworms and AMF hyphae increased 16s rDNA gene, enhancing OTC degradation consequently. Illumina sequencing of the 16S rRNA genes showed that AMF hyphae and earthworm altered bacterial community. Earthworms stimulated the growth of class Anaerolineae, family Flavobacteriaceae, Genus Pseudomonas, reducing OTC residues. AMF hyphae significantly increased the abundance of family Pirellulaceae, genus Glycomyces, and Nonomuraea which had a negative correlation with EOTC, accelerating OTC degradation. When used together, AMF hyphae and earthworms enhanced OTC degradation by stimulating class Anaerolineae and family Flavobacteriaceae.
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Affiliation(s)
- Jia Cao
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, Beijing 100193, China; Key Laboratory of Plant-Soil Interactions, MOE, Beijing 100193, China
| | - Chong Wang
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, Beijing 100193, China; Key Laboratory of Plant-Soil Interactions, MOE, Beijing 100193, China.
| | - Zhengxia Dou
- Centre for Animal Health and Productivity, School of Veterinary Medicine, University of Pennsylvania, 382 West Street Road, Kennett Square, PA 19348, USA
| | - Mengli Liu
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, Beijing 100193, China; Key Laboratory of Plant-Soil Interactions, MOE, Beijing 100193, China
| | - Dingge Ji
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, Beijing 100193, China; Key Laboratory of Plant-Soil Interactions, MOE, Beijing 100193, China
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Cao J, Wang C, Ji D. Improvement of the soil nitrogen content and maize growth by earthworms and arbuscular mycorrhizal fungi in soils polluted by oxytetracycline. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 571:926-934. [PMID: 27496075 DOI: 10.1016/j.scitotenv.2016.07.077] [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: 05/25/2016] [Revised: 07/07/2016] [Accepted: 07/11/2016] [Indexed: 06/06/2023]
Abstract
Interactions between earthworms (Eisenia fetida) and arbuscular mycorrhizal fungi (Rhizophagus intraradices, AM fungi) have been suggested to improve the maize nitrogen (N) content and biomass and were studied in soils polluted by oxytetracycline (OTC). Maize was planted and amended with AMF and/or earthworms (E) in the soil with low (1mgkg(-1) soil DM) or high (100mgkg(-1) soil DM) amounts of OTC pollution in comparison to soil without OTC. The root colonization, shoot and root biomass, shoot and root N contents, soil nitrogen forms, ammonia-oxidizing bacteria (AOB) and archaea (AOA) were measured at harvest. The results indicated that OTC decreased maize shoot and root biomass (p<0.05) by mediating the soil urease activity and AOB and AOA abundance, which resulted in a lower N availability for maize roots and shoots. There was a significant interaction between earthworms and AM fungi on the urease activity in soil polluted by OTC (p<0.05). Adding earthworms or AM fungi could increase the maize biomass and N content (p<0.05) in OTC polluted soil by increasing the urease activity and relieving the stress from OTC on the soil N cycle. AM fungi and earthworms interactively increased maize shoot and root biomass (p<0.05) in the OTC polluted soils through their regulation of the urease activity and the abundance of ammonia oxidizers, resulting in different soil NH4(+)-N and NO3(-)-N contents, which may contribute to the N content of maize shoots and roots. Earthworms and AM fungi could be used as an efficient method to relieve the OTC stress in agro-ecosystems.
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Affiliation(s)
- Jia Cao
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, China
| | - Chong Wang
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, China; Key Laboratory of Plant-Soil Interactions, Ministry of Education, China.
| | - Dingge Ji
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, China
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Chen Y, Hu Y, Guo Q, Yan J, Wu W. Effect of cations on the solubilization/deposition of triclosan in sediment-water-rhamnolipid system. CHEMOSPHERE 2016; 159:465-472. [PMID: 27341150 DOI: 10.1016/j.chemosphere.2016.06.013] [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: 03/15/2016] [Revised: 05/30/2016] [Accepted: 06/02/2016] [Indexed: 06/06/2023]
Abstract
Cations had great influence on the self-assembly of rhamnolipid, which in turn affected the fate of triclosan. The migration of triclosan from sediment to water benefited its biodegradation but it could be transformed into more toxic compounds. To regulate the fate of triclosan and reduce environmental risks extremely, the effect of four common cations in surface water (Na(+)/K(+)/Ca(2+)/Mg(2+)) on the solubilization/deposition of triclosan in sediment-water-rhamnolipid system was investigated. The interaction among cations, triclosan and rhamnolipid was explored based on self-assembly of rhamnolipid and water solubility of triclosan in rhamnolipid solutions. Results showed that cations had little influence on the fate of triclosan in the absence of rhamnolipid. Cations, especially Ca(2+)/Mg(2+), reduced the critical micelle concentration, micellar size and zeta potential of rhamnolipid solutions. The changes in self-assembly of rhamnolipid with different cations led to the difference of residual rhamnolipid concentration in water, which was nearly invariant with 0.01 M Na(+)/K(+) while decreased significantly with 0.01 M Ca(2+)/Mg(2+). Consequently, water solubility of triclosan in rhamnolipid solutions increased with the addition of Na(+)/K(+) whereas decreased with Ca(2+)/Mg(2+). In sediment-water- rhamnolipid system, triclosan was slightly solubilized from sediment to water with Na(+)/K(+) while deposited in sediment with Ca(2+)/Mg(2+). These findings provided an alternative application of rhamnolipid for the remediation of triclosan-polluted sediment.
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Affiliation(s)
- Yuanbo Chen
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Yongyou Hu
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China.
| | - Qian Guo
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Jia Yan
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Wenjin Wu
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
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Wu W, Hu Y, Guo Q, Yan J, Chen Y, Cheng J. Sorption/desorption behavior of triclosan in sediment-water-rhamnolipid systems: Effects of pH, ionic strength, and DOM. JOURNAL OF HAZARDOUS MATERIALS 2015; 297:59-65. [PMID: 25938643 DOI: 10.1016/j.jhazmat.2015.04.078] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 03/19/2015] [Accepted: 04/28/2015] [Indexed: 06/04/2023]
Abstract
Effects of pH, ionic strength and DOM on the sorption and desorption of triclosan (TCS) in sediment-water-rhamnolipid systems were systematically investigated through controlled batch experiments. Results showed that solubilization enhancement of TCS by rhamnolipid was higher in acid pH range than in alkaline pH range and was the highest at the ionic strength of 5×10(-2) M. Sorption of rhamnolipid onto sediment decreased with the increase of pH while the result was contrary to ionic strength. Moreover, the apparent distribution coefficients of TCS (Kd(*)) decreased from 73.35 to 32.30 L/kg with an increase of solution pH, as varying pH had significant influence on sorption of RL onto sediment and degree of ionization of TCS. Rhamnolipid presented the largest distribution capacity of TCS into the aqueous phase at moderate ionic strength (5×10(-2) M) with the Kd(*) of 17.26 L/kg. Further results also indicated that the presence of humic acid in aqueous phase could increase the desorption of TCS from contaminated sediment. The desorption enhancement was much higher in the system containing both rhamnolipid and DOM than in the single system. These findings provide meaningful information for enhanced migration of TCS from sediment to water by rhamnolipid.
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Affiliation(s)
- Wenjin Wu
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Yongyou Hu
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; State Key Lab of Pulp and Paper Engineering, College of Light Industry and Food Science, South China University of Technology, Guangzhou 510640, PR China.
| | - Qian Guo
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Jia Yan
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Yuancai Chen
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; State Key Lab of Pulp and Paper Engineering, College of Light Industry and Food Science, South China University of Technology, Guangzhou 510640, PR China
| | - Jianhua Cheng
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; State Key Lab of Pulp and Paper Engineering, College of Light Industry and Food Science, South China University of Technology, Guangzhou 510640, PR China
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Huang Y, Liu Z, He Y, Li Y. Impact of soil primary size fractions on sorption and desorption of atrazine on organo-mineral fractions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:4396-4405. [PMID: 25300187 DOI: 10.1007/s11356-014-3684-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 10/01/2014] [Indexed: 06/04/2023]
Abstract
In the current study, a mechanical dispersion method was employed to separate clay (<2 μm), silt (2-20 μm), and sand (20-50 μm) fraction in six bulk soils. Batch equilibrium method was used to conduct atrazine sorption and desorption experiments on soil organo-mineral fractions with bulk soils and their contrasting size fractions separately. The potential contribution of total organic carbon (TOC) for atrazine retention in different fractions was further investigated. It was found that clay fraction had the highest adsorption but the least desorption capacities for atrazine, while sand fraction had the lowest adsorption but the highest desorption capacities for atrazine. The adsorption percentage of atrazine, as compared with adsorption by the corresponding bulk soils, ranged from 53.6 to 80.5%, 35.7 to 56.4%, and 0.2 to 4.5% on the clay, silt, and sand fractions, respectively. TOC was one of the key factors affecting atrazine retention in soils, with the exact contribution dependent on varying degree of coating with mineral component in different soil size fractions. The current study may be useful to predict the bioavailability of atrazine in different soil size fractions.
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Affiliation(s)
- Yufen Huang
- Key Laboratory of Plant Nutrition and Fertilizer in South Region, Ministry of Agriculture, Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
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