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Li T, Omoniyi AO, Wang Y, Hu X, Su Z. Enhancing dye degradation using a novel cobalt metal-organic framework as a peroxymonosulfate activator. Dalton Trans 2024; 53:3523-3533. [PMID: 38275124 DOI: 10.1039/d3dt03707j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Among transition metals, cobalt ions exhibit superior catalytic activity in the peroxymonosulfate (PMS) degradation of pollutants. However, practical application is hindered by their high rate of ion leaching and the propensity for particle reunion issues. In this study, a novel cobalt metal-organic framework catalyst, denoted as CUST-565 ([Co3(BTB)2(BIPY)2]·4.5H2O·DMA), was synthesized via a one-step solvothermal method. The obtained crystal was employed as a catalyst to activate PMS for degrading two pollutants, methyl orange (MO) and rhodamine B (RhB), in wastewater. The catalyst demonstrated efficacy in PMS, achieving 97% degradation of MO and 98% degradation of RhB within 30 min at an initial concentration of 20.0 mg L-1. Additionally, various factors affecting dye degradation, including PMS dosage, catalyst dosage, temperature, initial pH, and coexisting anions, were investigated. Radical quenching experiments confirmed the presence of sulfate radicals (SO4˙-), hydroxyl radicals (HO˙), superoxide radicals (O2˙-), and singlet oxygen (1O2) in the system. After four cycles, CUST-565 retained its ability to catalytically degrade approximately 80% of the pollutants. These observed stability and reusability properties, corroborated by a series of characterization analyses before and after use, suggest that CUST-565 exhibits reliable performance. This work contributes to the development of cobalt-PMS catalysts for efficiently degrading dyes in wastewater.
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Affiliation(s)
- Tuotuo Li
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, China.
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, China
| | - Ahmed Olalekan Omoniyi
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, China.
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, China
| | - Yuliang Wang
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, China.
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, China
| | - Xiaoli Hu
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, China.
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, China
| | - Zhongmin Su
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, China.
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, China
- Joint Sino-Russian Laboratory of Optical Materials and Chemistry, Changchun 130022, China.
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2
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Wang C, Hu P, Sun Y, Yang C. Study on CO source identification and spontaneous combustion warning concentration in the return corner of working face in shallow buried coal seam. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:15050-15064. [PMID: 38285265 DOI: 10.1007/s11356-024-32119-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/17/2024] [Indexed: 01/30/2024]
Abstract
Coal spontaneous combustion is a common problem faced by many coal mines. Spontaneous combustion in goaf releases a large amount of harmful gases, polluting the environment while causing a large amount of wasted resources, and even endangering the lives of workers. Due to the collapse of the interior of the mining area, it is impossible to measure the internal gas composition directly. In order to more accurately predict the spontaneous combustion state inside the mining airspace, this paper obtains the CO generation law and the main source of the working face through the combination of laboratory experiments and on-site monitoring. The CO concentration prediction model of the return corner is established with CO as the index gas. Finally, the safe concentration and warning concentration of the working face are calculated according to the example, which provides theoretical basis for the prediction of spontaneous combustion of coal.
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Affiliation(s)
- Chengxi Wang
- School of Safety Engineering, Shenyang Aerospace University, Shenyang, 110136, China
| | - Po Hu
- School of Safety Engineering, Shenyang Aerospace University, Shenyang, 110136, China.
| | - Yingfeng Sun
- Research Institute of Macro-Safety Science, University of Science and Technology Beijing, Beijing, 100083, China
| | - Chunran Yang
- School of Arts and Sciences, University of Pennsylvania, Philadelphia, USA
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3
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Zhang M, Liu Y, Yin Z, Feng D, Lv H. Preparation and adsorption properties of magnetic chitosan/sludge biochar composites for removal of Cu 2+ ions. Sci Rep 2023; 13:20937. [PMID: 38017022 PMCID: PMC10684598 DOI: 10.1038/s41598-023-46815-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 11/06/2023] [Indexed: 11/30/2023] Open
Abstract
The magnetic chitosan/sludge biochar composite adsorbent was prepared using chitosan, Fe3O4, and sludge biochar as raw materials. The composite adsorbent was able to achieve rapid solid-liquid separation under an applied magnetic field. The morphology and microstructure of the composite adsorbent were characterized by FTIR, XRD, SEM, VSM, and BET analysis. The adsorption performance of the composite adsorbent on Cu2+ was investigated through static adsorption experiments, and the effects of adsorbent dosage, initial concentration of Cu2+, initial pH of the solution, and adsorption temperature on the adsorption efficiency of Cu2+ were discussed. The results showed that chitosan and Fe3O4 were successfully loaded on sludge biochar. When the initial concentration of Cu2+ was 30 mg/L, the dosage of the magnetic chitosan/sludge biochar composite material was 0.05 g, the adsorption time was 180 min, pH was 5, and the temperature was room temperature, the maximum removal rate of Cu2+ reached 99.77%, and the maximum adsorption capacity was 55.16 mg/g. The adsorption kinetics and adsorption isotherm data fitted well with the pseudo-second-order kinetic model and Langmuir adsorption isotherm model, indicating that the adsorption process was chemisorption with monolayer coverage.
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Affiliation(s)
- Meng Zhang
- Key Laboratory of Pollutant Chemistry and Environmental Treatment, School of Resources and Environment, Yili Normal University, Xinjiang, 835000, Yining, China
| | - Yunqing Liu
- Key Laboratory of Pollutant Chemistry and Environmental Treatment, School of Resources and Environment, Yili Normal University, Xinjiang, 835000, Yining, China.
| | - Zhizhen Yin
- Key Laboratory of Pollutant Chemistry and Environmental Treatment, School of Resources and Environment, Yili Normal University, Xinjiang, 835000, Yining, China.
| | - Dan Feng
- Key Laboratory of Pollutant Chemistry and Environmental Treatment, School of Resources and Environment, Yili Normal University, Xinjiang, 835000, Yining, China
| | - Hui Lv
- Key Laboratory of Pollutant Chemistry and Environmental Treatment, School of Resources and Environment, Yili Normal University, Xinjiang, 835000, Yining, China
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Kanagaraj J, Panda RC, Prasanna R, Tamilselvi A. An efficient dehairing system supported by oxidative-enzymatic auxiliary towards sustainability. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:43817-43832. [PMID: 36662437 DOI: 10.1007/s11356-023-25380-3] [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: 07/29/2022] [Accepted: 01/13/2023] [Indexed: 06/17/2023]
Abstract
A method of dehairing of goat skins using oxidative chemicals and protease enzymes has been attempted. The dehairing process is one of the important and essential steps in leather making, where hair is removed by lime and sodium sulphide in the conventional process. This conventional dehairing system generates a higher amount of pollution problem as compared to the other unit operations and unit processes. In this work, dehairing of the goat skins through oxidative agents namely magnesium peroxide and protease enzyme has been attempted. For this, protease has been produced from Bacillus sp. at the laboratory level and the activity was found. The dehairing of goat skins takes place for the duration of 14-16 h. The leather produced with the experimental sample showed comparable organoleptic and strength properties with the conventional sample. This method paved the way for the reduction of pollution loads especially BOD, COD, and TDS to the level of 59, 27, and 77%, respectively, in comparison with the control sample. The reaction kinetics for the formation of the ligand-macromolecular complex is found in the isothermal titration calorimetry (ITC) experiment and a mathematical model has been formulated. The dyed crust leather showed comparable colour properties. In addition to that, there is a reduction in processing time for leather making through skipping reliming and deliming processes which are said to be another advantage of this method. The physical strength properties of the experimental leather were also comparable with conventionally produced leather.
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Affiliation(s)
- James Kanagaraj
- Department of Leather Processing Technology, CSIR-Central Leather Research Institute, Adyar, Chennai, 20, India.
| | - Rames Chandra Panda
- Department of Chemical Engineering, CSIR-CLRI, Adyar, Chennai, 600020, India
| | - Ramakrishna Prasanna
- Department of Leather Processing Technology, CSIR-Central Leather Research Institute, Adyar, Chennai, 20, India
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Zhang Y, Wu C, Deng S, Zhang J, Hou J, Wang C, Fu Z. Effect of different washing solutions on soil enzyme activity and microbial community in agricultural soil severely contaminated with cadmium. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:54641-54651. [PMID: 35306650 DOI: 10.1007/s11356-022-19734-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 03/10/2022] [Indexed: 06/14/2023]
Abstract
Soil enzyme activities and microbial communities have a good response to the remediation effect of heavy metal-contaminated soils. To evaluate the effect of three commonly used washing agents, ferric chloride (FC), ethylenediaminetetraacetic acid (EDTA) and ethylenediamine-tetra-methylenephosphonic acid (EDTMP) on soil enzyme activities and microbial community in cadmium (Cd)-contaminated agricultural soil were collected from farmland near a non-ferrous metal smelter. The soil enzyme activities, microbial community, chemical forms of Cd and some physicochemical properties of the soil washed with different washing solutions were determined. The results showed that the three washing solutions had moderate removal efficiencies for Cd in the tested soil and the breakdown product of EDTMP has a certain stabilizing effect on Cd. The geometric mean and the integrated total enzyme activity index showed that soil washing with FC and EDTA was more beneficial to the restoration of biochemical functions than that with EDTMP. After soil washing, the Chao1 index of bacteria increased, and the microbial community structure changed. Pearson correlation analysis and redundancy analysis (RDA) indicated that the three washing solutions affected soil enzyme activities and microbial community by altering soil nutrient, total Cd concentration and Cd fractions in soils.
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Affiliation(s)
- Yu Zhang
- Department of Agricultural Resources and Environment, Nanjing University of Information Science and Technology, 219# Ningliu Rd, Nanjing, 210044, People's Republic of China
| | - Chunfa Wu
- Department of Agricultural Resources and Environment, Nanjing University of Information Science and Technology, 219# Ningliu Rd, Nanjing, 210044, People's Republic of China.
| | - Shaopo Deng
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, 219# Ningliu Rd, 210044, Nanjing, People's Republic of China.
| | - Jinlu Zhang
- Department of Agricultural Resources and Environment, Nanjing University of Information Science and Technology, 219# Ningliu Rd, Nanjing, 210044, People's Republic of China
| | - Jinyu Hou
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Chong Wang
- Department of Agricultural Resources and Environment, Nanjing University of Information Science and Technology, 219# Ningliu Rd, Nanjing, 210044, People's Republic of China
| | - Zhaocong Fu
- Department of Agricultural Resources and Environment, Nanjing University of Information Science and Technology, 219# Ningliu Rd, Nanjing, 210044, People's Republic of China
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Huang H, Zheng Y, Wei D, Yang G, Peng X, Fan L, Luo L, Zhou Y. Efficient removal of pefloxacin from aqueous solution by acid-alkali modified sludge-based biochar: adsorption kinetics, isotherm, thermodynamics, and mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:43201-43211. [PMID: 35091955 DOI: 10.1007/s11356-021-18220-9] [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: 09/05/2021] [Accepted: 12/15/2021] [Indexed: 06/14/2023]
Abstract
In this paper, one kind of acid-alkali modified sludge-based biochar (ASBC) was synthesized, characterized, and employed as adsorbent for the removal of pefloxacin. The characterization results showed that the specific surface area (SSA) of ASBC (53.381 m2/g) was significantly higher than that of SBC (24.411 m2/g). ASBC had a rougher surface, larger particle distribution, lower zero point charge, and richer functional groups (e.g., C-O and O-H) than SBC. The adsorption capacity of ASBC was 1.82 times than that of SBC. After 8 adsorption cycles in reuse experiment, the adsorption capacity of ASBC for pefloxacin still reached 144.08 mg/L, indicating that ASBC has good reusability. Static experiments showed that the optimal pH value was 6.0 in the adsorption of pefloxacin on SBC and ASBC. The result of adsorption kinetics indicated that the pseudo-second-order model could describe well the adsorption process. The Freundlich model was better than the Langmuir model to describe the adsorption of pefloxacin by ASBC, indicating that the adsorption process was mainly multilayer adsorption. Thermodynamic result showed that the adsorption of pefloxacin by ASBC was spontaneous and endothermic. The removal mechanism of pefloxacin by ASBC is mainly the substitution reaction and π-π EDA interaction. In summary, acid-alkali modified biochar is an effective adsorbent for pefloxacin in aqueous solution, and has great application prospects.
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Affiliation(s)
- Hongli Huang
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Yongxin Zheng
- Yueyang Academy of Agricultural Sciences, Yueyang, 414000, China
| | - Dongning Wei
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Guang Yang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
| | - Xin Peng
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Lingjia Fan
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Lin Luo
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Yaoyu Zhou
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China.
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7
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Spatial distribution and risk assessments due to the microplastics pollution in sediments of Karnaphuli River Estuary, Bangladesh. Sci Rep 2022; 12:8581. [PMID: 35595854 PMCID: PMC9123007 DOI: 10.1038/s41598-022-12296-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 04/28/2022] [Indexed: 11/09/2022] Open
Abstract
Microplastics (MPs) have become an emerging global pollutant due to their widespread dispersion and potential threats to marine ecosystems. However, studies on MPs in estuarine and coastal ecosystems of Bangladesh are very limited. Here, we conducted the first study on abundance, distribution, characteristics, and risk assessment of microplastics in the sediment of Karnaphuli River estuary, Bangladesh. Microplastic particles were extracted from sediments of 30 stations along the estuary by density separation and then enumerated and characterized using a stereomicroscope and Fourier Transform Infrared (FT-IR) spectroscopy. In the collected sediment of the Karnaphuli River estuary, the number of MPs varied from 22.29 to 59.5 items kg-1 of dry weight. The mean abundance was higher in the downstream and left banks of the estuary, whereas the predominant shape, colour, and size of MPs were films (35%), and white (19%), and 1-5 mm (30.38%), respectively. Major polymer types were polyethylene terephthalate, polystyrene, polyethylene, cellulose, and nylon. MPs were found to pose risks (low to high) in the sediment of the estuary, with the highest risk occurring at one station near a sewage outlet, according to the results of risk analyses using the pollution risk index, polymer risk index (H), contamination factors, and pollution load index (PLI). The single value index, PLI, clearly demonstrated that all sampling sites were considerably polluted with microplastics (PLI > 1). H values showed toxic polymers, even in lower proportions, possess higher polymeric hazard scores and vice versa. This investigation uncovered new insights on the status of MPs in the sediments of the Karnaphuli River estuary, laying the groundwork for future research and control of microplastic pollution and management.
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8
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Tao T, Shi Y, Gilbert KM, Liu X. Spatiotemporal variations of air pollutants based on ground observation and emission sources over 19 Chinese urban agglomerations during 2015-2019. Sci Rep 2022; 12:4293. [PMID: 35277593 PMCID: PMC8915768 DOI: 10.1038/s41598-022-08377-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/07/2022] [Indexed: 12/03/2022] Open
Abstract
The "comparative attitude" of urban agglomerations involves multidimensional perspectives such as infrastructure, ecological protection, and air pollution. Based on monitoring station data, comparative studies of multispatial, multitimescale and multiemission pollution sources of air quality on 19 urban agglomerations during the 13th Five-Year Plan period in China were explored by mathematical statistics. The comparison results are all visualized and show that clean air days gradually increased and occurred mainly in summer, especially in South and Southwest China. PM2.5, PM10 and O3 were still the main primary pollutants. PM2.5 is mainly concentrated in December, January and February, and PM10 is mainly concentrated in October–November and March–April. The O3 pollution in the Pearl River Delta and Beibu Gulf urban agglomerations located in the south is mainly concentrated from August to November, which is different from others from May to September. Second, from 2015 to 2019, the increasing rate of O3 concentration in any hour is higher than that of particulate matter (PM). Diurnal trends in O3 concentration in all directions also showed a single peak, with the largest increments that appeared between 13:00 and 16:00, while the spatial distribution of this peak was significantly regional, earlier in the east but later in the west. Third, this analysis indicated that the annual average air quality index (AQI) showed a gradually decreasing trend outward, taking the Central Plain urban agglomeration as the center. The ambient air pollutants are gradually moving southward and mainly concentrated in the Central Plains urban agglomeration from 2015 to 2019. Furthermore, in each urban agglomeration, the cumulative emission of PM2.5 is consisted of the four average emissions, which is approximately 2.5 times of that of PM10, and industries are the main sources of PM2.5, PM10 and VOCs (volatile organic compounds). VOCs and NOX increased in half of the urban agglomerations, which are the reasons for the increase in ozone pollution. The outcomes of this study will provide targeted insights on pollution prevention in urban agglomerations in the future.
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Affiliation(s)
- Tianhui Tao
- College of Surveying and Geo-Informatics, Tongji University, Shanghai, 200092, China
| | - Yishao Shi
- College of Surveying and Geo-Informatics, Tongji University, Shanghai, 200092, China.
| | | | - Xinyi Liu
- Zhejiang Zhipu Engineering Technology Limited Company, Huzhou, 313000, Zhejiang, China
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Jia X, Wu J, Lian C, Wang J, Rao J, Feng R, Chen Y. Investigating the effect of coal particle size on spontaneous combustion and oxidation characteristics of coal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:16113-16122. [PMID: 34647207 DOI: 10.1007/s11356-021-16929-1] [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: 08/02/2021] [Accepted: 10/03/2021] [Indexed: 06/13/2023]
Abstract
As a key parameter, the particle size of residual coal contributes greatly to its oxidation characteristics, so it is a significant and far-reaching topic to explore the role of different particle sizes in coal spontaneous combustion disaster. In this work, temperature-programmed system (TPS) was applied to analyze the oxygen consumption rate and CO and C2H4 production rules of six groups of coal samples with different particle sizes in the process of oxidation heating. The critical temperature (CT) and xerochasy temperature (XT) of different coal samples were obtained, and the coal oxidation process was divided into three stages (S1, slow oxidation stage; S2, fast oxidation stage; and S3, combustion stage). Then, the apparent activation energy (E) and pre-exponential factor (A) in three stages were regressed combined with Arrhenius formula. The results show that the smaller the coal particle size is, the larger the specific surface area is, the stronger the adsorption capacity of coal molecules and oxygen molecules is, resulting in the larger oxygen consumption rate. The values of CT and XT with particle size of 0.125-0.18 mm and 2-4 mm are the smallest and largest. For coal samples with the same particle size, the maximum values of E and A occur in stage S3 and the minimum values appear in stage S1. This is mainly due to the higher temperature of stage S3, which allows the activation of functional groups with higher apparent activation energy, stronger collisions between activated molecules, and more intense oxidation reactions.
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Affiliation(s)
- Xiaoliang Jia
- National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing, China.
- China Coal Technology and Engineering Group Chongqing Research Institute, Erlang Science and Technology New Town, No.6 Kecheng Road, Jiulongpo District, Chongqing, 400037, China.
| | - Jiaokun Wu
- National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing, China
- China Coal Technology and Engineering Group Chongqing Research Institute, Erlang Science and Technology New Town, No.6 Kecheng Road, Jiulongpo District, Chongqing, 400037, China
- College of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an, Shanxi, China
| | - Changjun Lian
- National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing, China
- China Coal Technology and Engineering Group Chongqing Research Institute, Erlang Science and Technology New Town, No.6 Kecheng Road, Jiulongpo District, Chongqing, 400037, China
| | - Jianjun Wang
- National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing, China
- China Coal Technology and Engineering Group Chongqing Research Institute, Erlang Science and Technology New Town, No.6 Kecheng Road, Jiulongpo District, Chongqing, 400037, China
| | - Jilai Rao
- National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing, China
- China Coal Technology and Engineering Group Chongqing Research Institute, Erlang Science and Technology New Town, No.6 Kecheng Road, Jiulongpo District, Chongqing, 400037, China
| | - Renjun Feng
- National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing, China
- China Coal Technology and Engineering Group Chongqing Research Institute, Erlang Science and Technology New Town, No.6 Kecheng Road, Jiulongpo District, Chongqing, 400037, China
| | - Yong Chen
- National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing, China
- China Coal Technology and Engineering Group Chongqing Research Institute, Erlang Science and Technology New Town, No.6 Kecheng Road, Jiulongpo District, Chongqing, 400037, China
- School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, China
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10
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Zhang F, Lin Q, Han F, Wang Z, Tian B, Zhao L, Dong T, Jiang Z. A flexible and wearable NO 2 gas detection and early warning device based on a spraying process and an interdigital electrode at room temperature. MICROSYSTEMS & NANOENGINEERING 2022; 8:40. [PMID: 35498341 PMCID: PMC9005537 DOI: 10.1038/s41378-022-00369-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/28/2021] [Accepted: 02/07/2022] [Indexed: 05/07/2023]
Abstract
Flexible sensors used to detect NO2 gas generally have problems such as poor repeatability, high operating temperature, poor selectivity, and small detection range. In this work, a new spraying platform with a simple structure, low cost, and good film-forming consistency was designed and built to make a sensitive film (rGO/SnO2) for NO2 gas sensors. The relationship between the solid content of rGO and SnO2 nanoparticles, annealing temperature, and sensor performance was studied. The results show that the interdigital electrode-sensitive film formed by spraying 0.25 ml of a 0.4 wt% rGO/SnO2 mixture and annealing at 250 °C exhibited the best comprehensive performance for NO2 detection. The sensor's response value for 100 ppm NO2 gas was 0.2640 at room temperature (25 °C), and the response time and recovery time were 412.4 s and 587.3 s, respectively. In the range of 20-100 ppm, the relationship between the response and NO2 concentration was linear, and the correlation coefficient was 0.9851. In addition, a soft-monitoring node module with an overlimit warning function for NO2 gas was designed and manufactured based on flexible electronics. Finally, the flexible sensor and node module were embedded into woven fabric that could be used to make a mask or a watch that could detect NO2 gas, realizing the practical application of flexible NO2 gas sensors in the field of wearable electronics.
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Affiliation(s)
- Fuzheng Zhang
- State Key Laboratory for Mechanical Manufacturing Systems Engineering, Xi’an Jiaotong University, 710049 Xi’an, China
| | - Qijing Lin
- State Key Laboratory for Mechanical Manufacturing Systems Engineering, Xi’an Jiaotong University, 710049 Xi’an, China
- Chongqing Key Laboratory of Micro-Nano Systems and Intelligent Sensing, Chongqing Academician Workstation, Chongqing 2011 Collaborative Innovation Center of Micro/Nano Sensing and Intelligent Ecological Internet of Things, Chongqing Technology and Business University, 400067 Chongqing, China
| | - Feng Han
- State Key Laboratory for Mechanical Manufacturing Systems Engineering, Xi’an Jiaotong University, 710049 Xi’an, China
| | - Zuowei Wang
- State Key Laboratory for Mechanical Manufacturing Systems Engineering, Xi’an Jiaotong University, 710049 Xi’an, China
| | - Bian Tian
- State Key Laboratory for Mechanical Manufacturing Systems Engineering, Xi’an Jiaotong University, 710049 Xi’an, China
| | - Libo Zhao
- State Key Laboratory for Mechanical Manufacturing Systems Engineering, Xi’an Jiaotong University, 710049 Xi’an, China
| | - Tao Dong
- Chongqing Key Laboratory of Micro-Nano Systems and Intelligent Sensing, Chongqing Academician Workstation, Chongqing 2011 Collaborative Innovation Center of Micro/Nano Sensing and Intelligent Ecological Internet of Things, Chongqing Technology and Business University, 400067 Chongqing, China
- Department of Microsystems, Faculty of Technology, Natural Sciences and Maritime Sciences, University of South-Eastern Norway (USN), Raveien 215, 3184 Borre, Norway
| | - Zhuangde Jiang
- State Key Laboratory for Mechanical Manufacturing Systems Engineering, Xi’an Jiaotong University, 710049 Xi’an, China
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Xu Y, Chen J, Yang F, Fang Y, Qian G. Transformation of phosphorus by MgCl 2 and CaCl 2 during sewage sludge incineration. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:60268-60275. [PMID: 34156616 DOI: 10.1007/s11356-021-13859-w] [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: 12/31/2020] [Accepted: 04/06/2021] [Indexed: 06/13/2023]
Abstract
Phosphorus (P) recovery from sewage sludge (SS) have been regarded as an effective method of P recycling. The effects of incineration temperature, incineration time, and chlorine additives on the distribution of P speciation during sludge incineration were studied. Moreover, the reactions between model compounds AlPO4 and additives (MgCl2 and CaCl2) were investigated by thermogravimetric differential thermal analysis and X-ray diffraction measurements. The results demonstrated that the increase in temperature and time stimulated the volatilization of non-apatite inorganic phosphorus (NAIP) instead of apatite phosphorus (AP). MgCl2 and CaCl2 can greatly promote the conversion of NAIP to AP. Additionally, AlPO4 reacted with MgCl2 are incinerated at 500-600 °C to form Mg3(PO4)2, which is mainly due to the reaction of the intermediate product MgO and AlPO4. Reactions between AlPO4 and CaCl2 occurred at 700-750 °C and produced Ca2PO4Cl, which can be directly used with high bioavailability. These findings suggested that chlorine additives in the SS incineration process can obtain phosphorus-containing minerals with higher bioavailability to realize the resource utilization of P in sludge.
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Affiliation(s)
- Yunfeng Xu
- School of Environmental and Chemical Engineering, Shanghai University, No.99 Shangda Road, Shanghai, 200444, China
| | - Jingyan Chen
- School of Environmental and Chemical Engineering, Shanghai University, No.99 Shangda Road, Shanghai, 200444, China
| | - Fei Yang
- School of Environmental and Chemical Engineering, Shanghai University, No.99 Shangda Road, Shanghai, 200444, China
| | - Yangfan Fang
- School of Environmental and Chemical Engineering, Shanghai University, No.99 Shangda Road, Shanghai, 200444, China
| | - Guangren Qian
- School of Environmental and Chemical Engineering, Shanghai University, No.99 Shangda Road, Shanghai, 200444, China.
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12
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Wang C, Cai L, Wu Y, Ouyang Y. Numerical simulation of the impact of an integrated renovation project on the Maowei Sea hydrodynamic environment. Sci Rep 2021; 11:17059. [PMID: 34426614 PMCID: PMC8382749 DOI: 10.1038/s41598-021-96441-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 08/10/2021] [Indexed: 11/15/2022] Open
Abstract
Integrated renovation projects are important for marine ecological environment protection. Three-dimensional hydrodynamics and water quality models are developed for the Maowei Sea to assess the hydrodynamic environment base on the MIKE3 software with high resolution meshes. The results showed that the flow velocity changed minimally after the project, decreasing by approximately 0.12 m/s in the east of the Maowei Sea area and increasing by approximately 0.01 m/s in the northeast of the Shajing Port. The decrease in tidal prism (~ 2.66 × 106 m3) was attributed to land reclamation, and accounted for just 0.86% of the pre-project level. The water exchange half-life increased by approximately 1 day, implying a slightly reduced water exchange capacity. Siltation occurred mainly in the reclamation and dredging areas, amounting to back-silting of approximately 2 cm/year. Reclamation project is the main factor causing the decrease of tidal volume and weakening the hydrodynamics in Maowei Sea. Adaptive management is necessary for such a comprehensive regulation project. According to the result, we suggest that reclamation works should strictly prohibit and dredging schemes should optimize in the subsequent regulation works.
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Affiliation(s)
- Cui Wang
- Third Institute of Oceanography, Ministry of Natural Resource, Xiamen, 361005, China
| | - Ling Cai
- Third Institute of Oceanography, Ministry of Natural Resource, Xiamen, 361005, China
| | - Yaojian Wu
- Third Institute of Oceanography, Ministry of Natural Resource, Xiamen, 361005, China.,Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Xiamen, 361005, China
| | - Yurong Ouyang
- Third Institute of Oceanography, Ministry of Natural Resource, Xiamen, 361005, China. .,Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Xiamen, 361005, China.
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Nabil-Adam A, Shreadah MA, Abd El-Moneam NM, El-Assar SA. Marine Algae of the Genus Gracilaria as Multi Products Source for Different Biotechnological and Medical Applications. Recent Pat Biotechnol 2021; 14:203-228. [PMID: 31987028 DOI: 10.2174/1872208314666200121144816] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 10/10/2019] [Accepted: 12/05/2019] [Indexed: 01/22/2023]
Abstract
BACKGROUND Gracilaria has been shown to be an important source of marine bioactive natural biomaterials and compounds. Although there are no enough patents used Gracilaria worldwide, the current study tries to put the Gracilaria on the spot for further important patents in the future. OBJECTIVE The current study investigates the pharmaceuticals and biochemical activity of Gracilaria because no previous studies have been carried out to examine the biochemical and pharmaceutical activates of Gracilaria from the Suez Canal of Egypt as an excellent source for bioactive compounds. METHODS Different advanced experimental models and analytical techniques, such as cytotoxicity, total antioxidant capacity, anticancer, and anti-inflammatory profiling were applied. The phytochemical analysis of different constituents was also carried out. RESULTS The mineral analysis revealed the presence of copper (188.3 ppm) and iron (10.07 ppm) in addition to a remarkable wealth of selenium and sulfur contents giving up to 36% of its dry mass. The elemental analysis showed high contents of sulfur and nitrogen compounds. The GCMS profiling showed varieties of different bioactive compounds, such as fatty acids, different types of carotenoids in addition to pigments, alkaloids, steroids. Many other compounds, such as carbohydrates and amino acids having antioxidant, anti-inflammatory, and antiviral activities, etc. were identified. The cytotoxicity activity of Gracilaria marine extract was very effective against cancerous cell lines and showed high ability as a potent antitumor due to their bioactive constituents. Specialized screening assays using two anticancer experimental models, i.e., PTK and SKH1 revealed 77.88% and 84.50% inhibition anticancer activity; respectively. The anti-inflammatory activities investigated using four different experimental models, i.e., COX1, COX2, IL6, and TNF resulted in 68%, 81.76%, 56.02% and 78.43% inhibition; respectively. Moreover, Gracilaria extracts showed potent anti-Alzheimer with all concentrations. CONCLUSION Gracilaria proved to be a multi-product source of marine natural products for different biotechnological applications. Our recommendation is to investigate the Gracilaria bioactive secondary metabolites in order to create and innovate in more patents from current important seaweeds (Gracilaria).
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Affiliation(s)
- Asmaa Nabil-Adam
- National Institute of Oceanography and Fisheries (NIOF), Marine Biotechnology and Natural Products Lab (MBNP), Alexandria, Egypt
| | - Mohamed A Shreadah
- National Institute of Oceanography and Fisheries (NIOF), Marine Biotechnology and Natural Products Lab (MBNP), Alexandria, Egypt
| | - Nehad M Abd El-Moneam
- Faculty of Science, Biochemistry Department, Alexandria University, Alexandria, Egypt
| | - Samy A El-Assar
- Botany and Microbiology Department, Alexandria University, Alexandria, Egypt
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14
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Guo X, Meng Q, Wang D, Zha F, Tang X, Tian H. S-doped NiFe-based catalyst for fast degradation of methylene blue by heterogeneous photo-Fenton reaction. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:36112-36121. [PMID: 33682058 DOI: 10.1007/s11356-021-13212-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 02/25/2021] [Indexed: 06/12/2023]
Abstract
S-doped NiFe-based particles were prepared by a solvothermal method and used to degrade methylene blue (MB) aqueous solutions with visible light in a heterogeneous Fenton reaction. The obtained solid samples were characterized by XRD, SEM, TEM, and XPS. It was found that 0.2 g L-1 NiFe2S4 can degrade 99.8% MB solution within 6 min in the presence of 5 mM H2O2 and natural pH. The recycle experiments results indicate that the NiFe2S4 catalyst possessed better stability than NiFe2O4. Furthermore, NiFe2S4 particles can be easily separated from contaminant solution by using a magnet due to their excellent ferromagnetism. COD analysis experiments indicated that the COD removal rate of NiFe2S4 is 73.1% in 30 min. A possible mechanism was proposed, and the degradation products were measured by LC-MS.
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Affiliation(s)
- Xiaojun Guo
- College of Chemistry & Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou, 730070, China.
| | - Qian Meng
- College of Chemistry & Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou, 730070, China
| | - Dianguo Wang
- College of Chemistry & Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou, 730070, China
| | - Fei Zha
- College of Chemistry & Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou, 730070, China
| | - Xiaohua Tang
- College of Chemistry & Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou, 730070, China
| | - Haifeng Tian
- College of Chemistry & Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou, 730070, China
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Lorenz M, Brunke M. Trends of nutrients and metals in precipitation in northern Germany: the role of emissions and meteorology. ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 193:325. [PMID: 33950350 PMCID: PMC8099819 DOI: 10.1007/s10661-021-09094-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 04/19/2021] [Indexed: 06/12/2023]
Abstract
We analyzed the precipitation chemistry for a maritime region in northern Germany (Schleswig-Holstein) from 1997 to 2017 in order to reveal temporal and spatial patterns and to evaluate the role of meteorological factors relative to emission reductions in Germany and Europe. Therefore, we applied several statistical methods such as time series decomposition, principal component, and redundancy analysis. We extracted two main groups: (i) a marine group (Cl, Na, Mg) that was related to natural processes like sea spray input and (ii) an anthropogenic group (Pb, Cd, As, Zn, and nitrogen species) with a terrestrial subgroup (Fe, Al, Mn), which were both related to emissions. These groups were valid for the spatial, seasonal, and annual trend data. Other elements, like Ca, K, total P, and sulfate, were influenced by natural and anthropogenic processes. The seasonal variation of ammonium deposition was caused primarily by ammonia emissions and ancillary by precipitation. Most heavy metals as well as sulfate, nitrate, and ammonium showed decreasing trends in concentrations and deposition fluxes. Only Hg did not show any trend. The decreasing depositions of sulfate and total nitrogen were correlated to emission reductions in Germany. The deposition of most heavy metals was influenced by emission reductions on European scale and meteorological factors such as wind speed and humidity. Hg did not show any correlation with the emission time series in Europe. Instead, it was correlated to the NAO index and wind, implying that global emissions and transport pathways determine the temporal development of Hg depositions. Overall, the study reveals that emission reductions positively influence regional depositions for most investigated substances. The regional spatial patterns of depositions were also influenced by local meteorological factors.
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Affiliation(s)
- Malte Lorenz
- Landesamt für Landwirtschaft, Umwelt und ländliche Räume des Landes Schleswig-Holstein, Abteilung Gewässer, Dezernat Fließgewässerökologie, Hamburger Chaussee 25, Flintbek, 24220, Germany.
| | - Matthias Brunke
- Landesamt für Landwirtschaft, Umwelt und ländliche Räume des Landes Schleswig-Holstein, Abteilung Gewässer, Dezernat Fließgewässerökologie, Hamburger Chaussee 25, Flintbek, 24220, Germany
- Landesamt für Umwelt Rheinland-Pfalz, Abteilung Gewässerschutz, Kaiser-Friedrich-Straße 7, Mainz, 55116, Germany
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16
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Kiran BR, Prasad MNV. Assisted phytostabilization of Pb-spiked soils amended with charcoal and banana compost and vegetated with Ricinus communis L. (Castor bean). ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:1507-1521. [PMID: 33501591 DOI: 10.1007/s10653-021-00825-1] [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: 09/07/2019] [Accepted: 01/14/2021] [Indexed: 06/12/2023]
Abstract
A greenhouse experiment was performed to elucidate the potency of Prosopis juliflora charcoal (PJC) and banana waste compost (BWC) to improve soil fertility and enhance plant growth rate. Plantlets of Ricinus communis were grown in 0, 400, and 800 mg kg-1 Pb-spiked soil ameliorated with P. juliflora charcoal and banana waste compost at 0, 5%, and 10% (w/w) for 60 days. PJC and BWC significantly (p < 0.05) increased plant growth parameters, that is, number of leaves, node number, plant height, and leaf diameter and reduced oxidative stress manifested by the lesser production of proline, hydrogen peroxide (H2O2), and malondialdehyde (MDA) with respect to control plants. Soil usage of PJC at 10% decreased the Pb accumulation by 61%, whereas BWC decreased Pb concentration in roots by 56% concerning control. Field emission scanning electron microscope (FE-SEM) coupled with energy-dispersive X-ray spectroscopy (EDS) showed high macro and microspores on the surface of charcoal while banana compost showed significant raise in the nutrient content (N, P, K, Zn, Ca, Fe, and Mg). Thermogravimetric (TG) and Fourier-transform infrared spectroscopy (FTIR) analysis of banana compost showed enhanced molar convolution of carbohydrate composites and nitrogen content. These findings pave a clear understanding that PJC and BWC are recalcitrant for Pb phytotoxicity and can also be used as nutrient-rich composites for increased crop production.
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Affiliation(s)
- Boda Ravi Kiran
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, 500 046, India.
| | - M N V Prasad
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, 500 046, India
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17
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Hong X, Yang K, Liang H. Characterization of acidity and sulfate in dust obtained from the Wuda coal base, northern China: spatial distribution and pollution assessment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:10.1007/s11356-021-12897-8. [PMID: 33634406 DOI: 10.1007/s11356-021-12897-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
The coal fire in Wuda, Inner Mongolia of China, is one of the most serious coal fires in the world with a history over 50 years and endangers the neighboring downwind urban area. A lack of effective measures to control coal fires in this region can aggravate environmental pollution. In this study, the levels and spatial distributions of acid (pH) and SO42- in dust in the Wuda coalfield and its surrounding areas in Inner Mongolia, North China, were reported to identify the potential acid and SO42- pollution in the local environment with an area of 270 km2. The mean pH and SO42- content was to found to be 7.44 and 5981 μg·g-1, respectively. Through the analysis of the spatial distribution of pH and SO42- concentrations, it was found that most of contaminated areas are mainly distributed in coalfield and its affiliated industrial parks, and the Wuda urban area also suffered from pollution. Based on chemical equilibrium, the surface acid pollution might have resulted in the change of the dust type from the original weakly alkaline CaCO3 type to the CaSO4 type in coalfield and industrial parks. Finally, the pollution assessment revealed that the coalfield and industrial parks are both at heavy pollution levels, and the urban area is mostly moderately polluted, followed by farm and peripheral region with a certain pollution risk. The results indicated that the long-term release of acidic gas from the coal fires and industrial parks can led to significantly elevated acidity and SO42- levels in the dust of the local environment, while coal fires can aggravate surface pollution in industrial parks, but the extent of contamination was also closely related to the terrain and wind direction in the study area.
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Affiliation(s)
- Xiuping Hong
- College of Life Science, Huaibei Normal University, Huaibei, 235000, China.
| | - Kang Yang
- School of Chemical & Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China
| | - Handong Liang
- State Key Laboratory of Coal Resources and Safety Mining, China University of Mining and Technology, Beijing, 100083, China.
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18
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Yang T, Meng J, Jeyakumar P, Cao T, Liu Z, He T, Cao X, Chen W, Wang H. Effect of pyrolysis temperature on the bioavailability of heavy metals in rice straw-derived biochar. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:2198-2208. [PMID: 32875446 DOI: 10.1007/s11356-020-10193-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 07/20/2020] [Indexed: 06/11/2023]
Abstract
The aim of this study was to investigate the stability of heavy metals in biochar derived from rice straw with heavy metal enrichment, and the relationship between pyrolysis temperature and the stability of heavy metals in biochar. The concentrations of heavy metals of rice straw and biochar (pyrolyzed at 300 °C, 500 °C, 700 °C, and 900 °C) were measured. The experiments of extraction and leaching were conducted to evaluate the effect of pyrolysis temperature on the stability of heavy metals in biochar. A pot experiment was conducted to investigate the environmental risk of heavy metals from biochar. The pyrolysis temperature affected the pH, total C, total N, surface structure, functional groups, and the concentrations of heavy metals in biochar. After being pyrolyzed, the bioavailable DTPA fraction of total Cu, Zn, Cd, and Pb of BC500, BC700, BC900, and BC900 decreased by 72.87%, 69.45%, 48.09% and 15.89%, respectively, in comparison with levels in rice straw. In addition, the leaching potential of heavy metals in biochar was significantly reduced. The pot experiment and the correlation analysis indicated that the pyrolysis temperature was not significantly related to the accumulation of heavy metals in aerial parts of rice seedlings. Increase in the pyrolysis temperature had a positive effect on increasing the stability and decreasing the mobility of heavy metals in biochar. However, the variations in the pyrolysis temperature were not the main factor to affect the uptake of heavy metals originated from biochar into the aerial parts of rice seedlings.
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Affiliation(s)
- Tiexin Yang
- Agronomy College, Shenyang Agricultural University, Shenyang, 110866, China
- Liaoning Biochar Engineering and Technology Research Center, Shenyang, 110866, China
| | - Jun Meng
- Agronomy College, Shenyang Agricultural University, Shenyang, 110866, China.
- Liaoning Biochar Engineering and Technology Research Center, Shenyang, 110866, China.
| | - Paramsothy Jeyakumar
- Environmental Sciences, School of Agriculture and Environment, Massey University, Private Bag 11 222, Palmerston North, 4442, New Zealand
| | - Ting Cao
- Agronomy College, Shenyang Agricultural University, Shenyang, 110866, China
- Liaoning Biochar Engineering and Technology Research Center, Shenyang, 110866, China
| | - Zunqi Liu
- Agronomy College, Shenyang Agricultural University, Shenyang, 110866, China
- Liaoning Biochar Engineering and Technology Research Center, Shenyang, 110866, China
| | - Tianyi He
- Agronomy College, Shenyang Agricultural University, Shenyang, 110866, China
- Liaoning Biochar Engineering and Technology Research Center, Shenyang, 110866, China
| | - Xuena Cao
- Agronomy College, Shenyang Agricultural University, Shenyang, 110866, China
- Liaoning Biochar Engineering and Technology Research Center, Shenyang, 110866, China
| | - Wenfu Chen
- Agronomy College, Shenyang Agricultural University, Shenyang, 110866, China
- Liaoning Biochar Engineering and Technology Research Center, Shenyang, 110866, China
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environment and Chemical Engineering, Foshan University, Foshan, 528000, Guangdong, China
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Zhejiang, 311300, Hangzhou, China
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Qi C, Fang J, Wang G, Huang H, Wang Z, Si Z, Zhang L. Characterization of odorants in contrasting ecotypes of Lake Taihu: algae-dominated versus macrophyte-dominated zones. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:42221-42229. [PMID: 32037493 DOI: 10.1007/s11356-020-07896-0] [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: 08/01/2019] [Accepted: 01/27/2020] [Indexed: 06/10/2023]
Abstract
Globally, odorant incidents are occurring at an increasing frequency, magnitude, and duration under the dual influences of eutrophication and climate change. However, the contribution of multiple ecotypes to odorant production in the complicated and dynamic lake ecosystems remains unclear. In this study, the odorants and environmental conditions in algae-dominated zones (ADZs) and macrophyte-dominated zones (MDZs) in Lake Taihu were identified and characterized. Results showed that the ADZs were characterized by an abundance of pigments and nutrients and low DO levels, while the MDZs were featured as high TOC/TN ratios and high DO levels. Most odorants in ADZs and several in MDZs exceeded the odorant threshold content. The dominant odorants were dimethyl disulfide (DMDS) and dimethyl trisulfide (DMTS), β-ionone and β-cyclocitral in ADZs, which were associated with the accumulation and decomposition of algal detritus. For MDZs, the dominant odorants were 2-methylisoborneol (2-MIB) and geosmin, which were at least partially attributed to the massive addition of bait in a traditional aquaculture area. In addition, the odorant concentration in the water of ADZs was approximately 3 to 21 times higher than that in MDZs, while in the benthic sediment, the odorant concentration in ADZs was approximately 2 to 3 orders of magnitude higher than in MDZs. This study highlights the production and accumulation of nuisance odorants in the benthic sediment of ADZs, indicating a risk of diffusion from the sediment to the water column. This was supported by the correlation of odorants in the water column with that in the sediment. The results of this study will be helpful for the management of different ecotypes suffering from nuisance odorants problems.
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Affiliation(s)
- Chuang Qi
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
| | - Jiaqi Fang
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
| | - Guoxiang Wang
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China.
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China.
- Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing Normal University, Nanjing, 210023, China.
- Jiangsu Key Laboratory of Environmental Change and Ecological Construction, Nanjing, 210023, China.
| | - Hexiao Huang
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
| | - Zhuosen Wang
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
| | - Zejun Si
- School of Computer Science and Software Engineering, East China Normal University, Shanghai, 200062, China
| | - Limin Zhang
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China.
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China.
- Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing Normal University, Nanjing, 210023, China.
- Jiangsu Key Laboratory of Environmental Change and Ecological Construction, Nanjing, 210023, China.
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Wang H, Tan B, Zhang X. Research on the technology of detection and risk assessment of fire areas in gangue hills. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:38776-38787. [PMID: 32632694 DOI: 10.1007/s11356-020-09847-1] [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: 04/30/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
Coal gangue hills are prone to spontaneous combustion, thereby polluting the environment of mining areas such as the soil, groundwater, and atmosphere, and the frequent occurrence of gangue hill collapses, landslides, explosions, and other accidents can even endanger the lives and property of residents. To realize the safety management of coal gangue spontaneous combustion and evaluate its present risks, this paper selects the Dongzhou Kiln gangue hill in Zuoyun County, Datong City, China, as the research object to conduct a risk assessment study. The Dongzhou gangue hill fire area is relatively large, with a total area of 183,039 m2. Smoke emission commonly occurs at the site, and the surface temperature reaches 50 °C, while the CO concentration exceeds 10-3. A radon detection scheme for concealed fire zones verified with borehole temperature measurements is applied. The high-temperature area is delineated with relevant data obtained by infrared thermal imaging, radon concentration, and borehole temperature detection technologies, and a coal gangue spontaneous combustion risk assessment method is established, while the gas toxicity and explosion risks of the construction area and fire trends are analyzed. The research results indicate that there are 6 likely high-temperature regions in the test area, 4 high-toxicity areas in the drilling construction area, 1 area with a high explosion risk, and 3 areas with a high risk of spontaneous combustion. Among these areas, platform 2 is a high-risk area and needs to be carefully considered. The construction of the entire area is at high risk, including toxicity, gas explosion, and spontaneous combustion risks, and measures must be implemented to reduce the overall risk.
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Affiliation(s)
- Haiyan Wang
- Faculty of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing, China
- China Coal Research Institute, Beijing, China
| | - Bo Tan
- Faculty of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing, China.
| | - Xuedong Zhang
- Faculty of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing, China
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Duan P, Jia X, Lin J, Xia R. Electro-oxidation of ceftazidime in real municipal wastewater using PbO2–Ce and SnO2–Sb electrodes: influence of electrolyte and degradation pathway. J APPL ELECTROCHEM 2020. [DOI: 10.1007/s10800-020-01482-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Zhang Z, Wu X, Wu Q, Huang X, Zhang J, Fang H. Speciation and accumulation pattern of heavy metals from soil to rice at different growth stages in farmland of southwestern China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:35675-35691. [PMID: 32601861 DOI: 10.1007/s11356-020-09711-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 06/11/2020] [Indexed: 05/28/2023]
Abstract
Paddy rice, one of the most important food crops in Southeast Asia, is considered a main source of human exposure to heavy metal contamination because it efficiently accumulates heavy metals. In the present study, of Japonica rice grains, straw, roots, leaves, and husks and rhizosphere paddy soils (0-20 cm and 20-40 cm depth) were collected from Zunyi in northern Guizhou Province, China. The forms of heavy metals, including Cr, Cd, Pb, Cu, and Zn, in the two soil profiles were investigated using Tessier's five-stage sequential extraction procedure. There was no heavy metal pollution in the study area based on the evaluation of the geo-accumulation index and the potential ecological risk index. Accumulation varied from one area to another, and the highest metal accumulation was found in the order of root > stems > leaves. The bioaccumulation factor (BCF) results revealed that during the grain-filling stage, the rice had high BCF values (> 1) for Cd and Zn. The target hazard quotient (THQ) of ingestion peaked for Cd and reached its minimum level for Zn in not only in adults but also in children. The THQ was ranked as Cd > Cu > Pb > Cr > Zn for both adults and children. The hazard index values for adults and children for the five heavy metals were 1.81 × 10-3 and 1.55 × 10-3, respectively, indicating that these metals have little effect on the human body. The lifetime carcinogenic risk values for local adults and children were 4.28 × 10-5 and 5.92 × 10-5, respectively, both of which were within the tolerable to acceptable risk range. In summary, obvious hazards for local adults and children were not observed in this study. Considering the total amount and chemical forms of Cd, it is necessary to notify the appropriate departments about the possible rice contamination caused by Cd in the soil.
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Affiliation(s)
- Zhenming Zhang
- Guizhou Institute of Biology, Guiyang, 550009, Guizhou, China
| | - Xianliang Wu
- Guizhou Institute of Biology, Guiyang, 550009, Guizhou, China
| | - Qiusheng Wu
- Guiyang municipal Bureau of Ecological and Environment, Guiyang, 550081, Guizhou, China
| | - Xianfei Huang
- Guizhou Provincial Key Laboratory for Information Systems of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang, 550001, Guizhou, China.
| | - Jiachun Zhang
- Guizhou Botanical Garden, Guizhou Academy of Sciences, Guiyang, 550004, Guizhou, China.
| | - Hui Fang
- College of agriculture, Guizhou University, Guiyang, 550025, Guizhou, China
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Du Y, Luo B, Han W, Duan Y, Yu C, Wang M, Ge Y, Chang J. Increasing plant diversity offsets the influence of coarse sand on ecosystem services in microcosms of constructed wetlands. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:34398-34411. [PMID: 32557072 DOI: 10.1007/s11356-020-09592-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 06/04/2020] [Indexed: 06/11/2023]
Abstract
As wastewater treatment systems that strengthen natural processes, constructed wetlands provide both ecosystem services and disservices. Manipulating both the physical and ecological structures of constructed wetlands has been the key to improve ecosystem services while reducing disservices. Herein, an experiment using simulated constructed wetlands was conducted to explore the effect of two different substrate sizes (fine sand or coarse sand), plant richness (1, 3, or 4 species), and plant species identity on ecosystem services. Results indicated that (1) only in microcosms with coarse sand, species richness enhanced nitrogen removal efficiency while reduced nitrous oxide emissions and that (2) the presence of Phalaris arundinacea increased nitrogen removal rate, and the presence of Rumex japonicus or Oenanthe javanica decreased nitrous oxide emissions; (3) however, the net ecosystem services (nitrogen removal, greenhouse gas emissions, biofuel production) of microcosms with fine sand were higher than those of microcosms with coarse sand, and (4) interestingly, there was no difference in net ecosystem services between microcosms with coarse sand (1033 yuan ha-1 day-1; 1 yuan ≈ 0.14 USD) and those with fine sand (1071 yuan ha-1 day-1) for the four-species mixtures. Hence, in practice, ensuring plant species richness with appropriate species in microcosms with coarse sand can improve ecosystem services to a level equal to that of microcosms with fine sand and help to prevent constructed wetlands from clogging.
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Affiliation(s)
- Yuanyuan Du
- College of Life Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
| | - Bin Luo
- College of Life Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
| | - Wenjuan Han
- College of Life Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, Zhejiang, China
| | - Yingyao Duan
- College of Life Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
| | - Chenchen Yu
- College of Life Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
| | - Meng Wang
- Key Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, 5268 Renmin Street, Changchun, 130024, People's Republic of China
| | - Ying Ge
- College of Life Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
| | - Jie Chang
- College of Life Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China.
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24
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Tang S, Zheng C, Chen M, Du W, Xu X. Geobiochemistry characteristics of rare earth elements in soil and ground water: a case study in Baotou, China. Sci Rep 2020; 10:11740. [PMID: 32678169 PMCID: PMC7367286 DOI: 10.1038/s41598-020-68661-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 06/11/2020] [Indexed: 11/09/2022] Open
Abstract
The distribution of rare earth elements and the microbial community in nearby ground water and soil were influenced by tailings ponds. Accordingly, the behaviors of rare earth elements in ground water and soil around the tailings pond, and the changes of microbial communities were both investigated in this study. The results showed that rare earth elements accumulated in ground water and soil around the tailings pond appeared as light rare earth elements enrichment. Through the normalization of rare earth elements, different extents of anomaly (from negative to positive) were observed for Ce and Eu in the distribution patterns of REEs in groundwater, however, Ce and Eu were negatively anomaly in soil. According to the correlation analysis, Mn2+, SO42-, Cl-, ammonia nitrogen and Ca2+ are significantly correlated with the distribution of rare earth elements. Meanwhile, there were the same dominant bacteria in ground water and soil including Actinobateria, Proteobacteria and Acidobacteria at the phylum level. This microbial community composition is similar to that reported in arid lands around the world. On the other hand, Bacillus and Blastococcus showed significant correlation with rare earth elements at the genus level. This study might provide an important basis for the risk assessment of REEs in the environment.
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Affiliation(s)
- Shuting Tang
- School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, 014010, People's Republic of China
| | - Chunli Zheng
- School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, 014010, People's Republic of China.
| | - Minjie Chen
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, People's Republic of China
| | - Weiqi Du
- School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, 014010, People's Republic of China
| | - Xin Xu
- School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, 014010, People's Republic of China
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25
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Lu M, Cao X, Pan J, Li T, Khan MB, Gurajala HK, He Z, Yang X. Identification of wheat (Triticum aestivum L.) genotypes for food safety on two different cadmium contaminated soils. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:7943-7956. [PMID: 31893361 DOI: 10.1007/s11356-019-07261-w] [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: 07/14/2019] [Accepted: 12/02/2019] [Indexed: 06/10/2023]
Abstract
Over the last decade, human population has been facing great challenges in ensuring appropriate supply of food free from cadmium (Cd) contamination. Selection of genetically low-Cd wheat (Triticum aestivum L.) genotypes, with a large biomass and high accumulation of Cd in straw but low-Cd concentration in grains, is an inventive approach of phytoremediation while keeping agricultural production in moderately contaminated soils. In this study, variations in Cd uptake and translocation among the 30 wheat genotypes in two different sites were investigated in field experiments. Significant differences in grain Cd concentration were observed between the two sites, with averaged values of 0.048 and 0.053 mg kg-1 DW, respectively. Based on straw Cd accumulation, grain Cd concentration, and TFrs, Bainong207 and Aikang58 for site A and Huaimai23 and Yannong21 for site B are promising candidates of low-Cd genotypes, which have considerable potential in achieving phytoremediation while keeping agricultural production on moderately or slightly Cd-polluted soil. The results indicate that it is possible to select the optimal low-Cd genotypes of wheat for different soil types by taking consideration of the effect of soil-wheat genotype interaction on grain Cd concentration.
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Affiliation(s)
- Min Lu
- Key Laboratory of Environmental Remediation and Ecosystem Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Xuerui Cao
- Key Laboratory of Environmental Remediation and Ecosystem Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Jianqing Pan
- Agriculture Bureau of Changxing County, Zhejiang Province, Huzhou, 313000, People's Republic of China
| | - Tingqiang Li
- Key Laboratory of Environmental Remediation and Ecosystem Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Muhammad Bilal Khan
- Key Laboratory of Environmental Remediation and Ecosystem Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Hanumanth Kumar Gurajala
- Key Laboratory of Environmental Remediation and Ecosystem Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Zhenli He
- Indian River Research and Education Center, University of Florida, Institute of Food and Agricultural Sciences, Fort Pierce, FL, 34945, USA
| | - Xiaoe Yang
- Key Laboratory of Environmental Remediation and Ecosystem Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China.
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26
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Zhang G, Ma K, Zhang Z, Shang X, Wu F. Waste Brick as Constructed Wetland Fillers to Treat the Tail Water of Sewage Treatment Plant. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 104:273-281. [PMID: 31938814 DOI: 10.1007/s00128-020-02782-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Accepted: 01/03/2020] [Indexed: 06/10/2023]
Abstract
Adopting the concept of "using waste to treat waste", the waste bricks will be used for constructed wetland filling. Integrated vertical-flow constructed wetland (IVCW) studied on the purification effect in influent water under three hydraulic loads (0.15, 0.25, 0.35 m/day). The results show that the waste bricks can be used as the carrier for the growth of the system biofilm, and have positive effects on the removal of pollutants in the influent water. Under three different hydraulic load conditions, the vertical flow of CWs can significantly reduce the load of water intake. In the low hydraulic load condition of 0.15 m/day, the average removal rates of chemical oxygen demand (COD), ammonia nitrogen (NH3-N), total nitrogen (TN), and total phosphorus (TP) can reach 66.52%, 72.10%, 56.53% and 91.55% in this system, respectively. The influent pool on removal efficiency of pollutants was obviously higher than that of the upper pool, especially in the inlet surface 0-30 cm ranges. This research has achieved the effect of using "waste" to treat wastewater, which has strong practical significance and popularization value.
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Affiliation(s)
- Guozhen Zhang
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, People's Republic of China
| | - Kai Ma
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, People's Republic of China.
| | - Zixian Zhang
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, People's Republic of China
| | - Xingbao Shang
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, People's Republic of China
| | - Fuping Wu
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, People's Republic of China
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27
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Wang Y, Wang WH, Lu XX, Feng LL, Xue FR, Sun LQ. Impact of calcium peroxide dosage on the control of nutrients release from sediment in the anoxic landscape water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:37070-37081. [PMID: 31745766 DOI: 10.1007/s11356-019-06916-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 10/30/2019] [Indexed: 06/10/2023]
Abstract
The anoxic and reductive aquatic environment is formed easily in summer due to the global warming, which may accelerate endogenous release. In this experiment, four different dosages of calcium peroxide (CaO2) were adopted to study the control effects of nutrients release from the sediments in the simulated landscape waters. The results demonstrated that CaO2 addition could effectively improve the physicochemical properties and microbial composition in sediments, and an obvious improvement was achieved with a larger dosage. It was observed that the surface sediments of experiment groups were oxidized to form a capping barrier between the sediment and overlying water, which might cut off the pollutant diffusion in sediment. Meanwhile, CaO2 could decrease the nutrients concentration in water obviously, and the reduced effect was positively correlated with the CaO2 dosage. Compared with the nutrients release fluxes in CK (105.89 mg-TN m-2 day-1, 106.48 mg-NH4+-N m-2 day-1, 4.14 mg-TP m-2 day-1, and 4.30 mg-SRP m-2 day-1), the CaO2 dosages of 0.12 and 0.18 kg m-2 could entirely inhibit the nutrients release from sediment, and partially reduce the original pollutants in the overlying water. However, 0.18 kg m-2 CaO2 would cause a higher increase of pH value and NO2--N concentration, and bring potential risk to the aquatic ecosystem. Therefore, 0.12 kg-CaO2 m-2-sediment was selected as the optimal dosage by considering the control effect, economic cost, and potential risk comprehensively. In general, this study provided a quantitative usage method of CaO2, which is convenient and effective to prevent or control the nutrients release from sediment caused by anoxic and reductive condition in summer.
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Affiliation(s)
- Yi Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, China.
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, People's Republic of China.
| | - Wen-Huai Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, China
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, People's Republic of China
| | - Xin-Xin Lu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, China
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, People's Republic of China
| | - Lin-Lin Feng
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, China
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, People's Republic of China
| | - Fu-Rong Xue
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, China
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, People's Republic of China
| | - Lu-Qin Sun
- Environmental Science Department, University of San Francisco, San Francisco, CA, 94117, USA
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28
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Li Y, Yan HQ, Yu XY. Uptake and accumulation of di-n-butyl phthalate in six leafy vegetables under hydroponic conditions. FOOD PRODUCTION, PROCESSING AND NUTRITION 2019. [DOI: 10.1186/s43014-019-0009-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Abstract
The uptake and accumulation of di-n-butyl phthalate (DBP) in six leafy vegetables was investigated under hydroponic conditions. The test vegetables were six varieties of Brassica campestris ssp., including Kangresijiqing (KRSJQ), Xiadiqing (XDQ), Ziyoucai (ZYC), Aijiaohuang (AJH), Shanghaiqing (SHQ) and Gaogengbai (GGB). The root concentration factor (RCF), translocation factor (TF) and transpiration stream concentration factor (TSCF) were calculated in order to compare the difference of uptake and accumulation behaviours of DBP in vegetable varieties. The results showed that DBP was easily concentrated in vegetable roots, but was poorly translocated from the roots to the shoots. Among the six vegetables, the ability of concentrating DBP from the solution to shoots was the highest in GGB, followed by ZYC, KRSJQ, AJH, SHQ and XDQ. High concentrations of DBP (5.0 mg/L) seem to inhibit normal physiological activity in the vegetables, which resulted in a higher RCF and a lower TF and TSCF than in low-concentration treatment. The results will help to evaluate the safety of agricultural products and to provide evidence for screening DBP pollution-safe vegetable cultivars.
Graphical abstract
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29
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Tan B, Zhang F, Zhang Q, Wei H, Shao Z. Firefighting of subsurface coal fires with comprehensive techniques for detection and control: a case study of the Fukang coal fire in the Xinjiang region of China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:29570-29584. [PMID: 31422530 DOI: 10.1007/s11356-019-06129-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 07/29/2019] [Indexed: 06/10/2023]
Abstract
Coal fires are global disasters, and China suffers the most serious coal fire disasters in the world. This paper introduces detailed detection and extinguishing methods for the wide range and complex coal fires at the No. 1 well in the Fukang mining area. First, the characteristics of the large and complex coal fire areas in the No. 1 well in the Fukang mining area are introduced, and 5 large fire areas are detected using the comprehensive detection range method, which detects fire areas before fire engineering practices are implemented. From the characteristics of this large-scale, complex coal fire, the zonal fire extinguishing scheme is formulated, designed, and applied, and the "shallow open fire stripping-construction of the boundary isolation zone-drilling and grouting in the deep fire area" series of events is utilized in the zonal fire extinguishing scheme. A new type of sodium silicate gel in compressive moisturizing plastic packing materials is used, an automatic grouting system is developed, and effective grouting processes are proposed, which can be adjusted according to the grouting effect analysis of the grouting parameters to determine the natural sedimentation and diffusion radius. After the construction was completed, the fire extinguishing effect was tested, revealing that the temperature in the fire zone cooled in a short time, and no subsequent heating phenomenon occurs. The method proposed in this paper provides guidance and a reference for other coal fires in the world.
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Affiliation(s)
- Bo Tan
- Faculty of Emergency Management and Safety Engineering, China University of Mining & Technology (Beijing), Beijing, China.
| | - Feichao Zhang
- Faculty of Emergency Management and Safety Engineering, China University of Mining & Technology (Beijing), Beijing, China
| | - Qingsong Zhang
- China Coal Technology Engineering Group, Chongqing Research Institute, Chongqing, China
| | - Hongyi Wei
- Faculty of Emergency Management and Safety Engineering, China University of Mining & Technology (Beijing), Beijing, China
| | - Zhuangzhuang Shao
- Faculty of Emergency Management and Safety Engineering, China University of Mining & Technology (Beijing), Beijing, China
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30
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Zheng H, Zheng C, Li X, Xu S, Liu S, Zhang Y, Weng W, Gao X. Evaporation and concentration of desulfurization wastewater with waste heat from coal-fired power plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:27494-27504. [PMID: 31332678 DOI: 10.1007/s11356-019-05297-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 04/25/2019] [Indexed: 06/10/2023]
Abstract
The reduction of wet desulfurization wastewater is one of the important tasks of coal-fired power plants, and it is important for achieving "zero emissions." Evaporation and concentration (E&C) with waste heat is an effective way to reduce wastewater. Here, two typical types of industrial desulfurization wastewater are used to study the change rule of pH and total dissolved solids during wastewater concentration in a circulating evaporation tower. The results indicate that with the increase of concentration ratio, the pH of desulfurization wastewater is decreased rapidly and then is gradually stabilized at 2-3 when SO2 or SO3 is contained in flue gas, and the increase in conductivity is less for wastewater with higher SO42- content. The characteristics of various ions are also analyzed, and the composition and microscopic morphology of the precipitates are characterized during concentration. The growth pattern of Ca2+ concentration is dependent on the ratio of Ca2+ and SO42- in raw wastewater. When the concentration ratio is 7.21, the insoluble and slightly soluble substances undergo precipitation and the solid content is approximately 20%, which can help realize the concentration and reduction of desulfurization wastewater.
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Affiliation(s)
- Hao Zheng
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China
| | - Chenghang Zheng
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China.
| | - Xiang Li
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China
| | - Shiguo Xu
- Zhongyou Ruisi Technology Development Co., Ltd, Tianjin, China
| | - Shaojun Liu
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China
| | - Youngxin Zhang
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China
| | - Weiguo Weng
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China
| | - Xiang Gao
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China
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31
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Wang M, He D, Shen F, Huang J, Zhang R, Liu W, Zhu M, Zhou L, Wang L, Zhou Q. Effects of soil compaction on plant growth, nutrient absorption, and root respiration in soybean seedlings. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:22835-22845. [PMID: 31177416 DOI: 10.1007/s11356-019-05606-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 05/27/2019] [Indexed: 06/09/2023]
Abstract
Soil compaction is a major environmental problem that affects plant growth and development. In this study, to further our understanding of its negative effects on plant growth, we investigated the effects of soil compaction on the growth, mineral absorption, and activities of key respiratory enzymes in soybean seedlings. We found that moderate-level soil compaction increased the activities of pyruvate kinase and phosphofructokinase in soybean seedling roots, enhancing the accumulation of P, K, Mg, Ca, and other elements. These accumulated elements, particularly Ca, increased the number of fibrous upper roots, but reduced root length and inhibited plant growth. High-level soil compaction inhibited the accumulation of P, K, Mg, Mn, Fe, Cu, and Zn and increased the accumulation of Ca via decreasing the activities of isocitrate dehydrogenase and cytochrome c oxidase. These effects led to a decreased root cell size, blurred root cell boundaries, and the inhibition of plant growth. Taken together, our results provide a new insight into the mechanisms by which soil compaction inhibits plant growth.
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Affiliation(s)
- Meijiao Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Ding He
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Fei Shen
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
- Wuxi Environmental Monitoring Central Station, Wuxi, 214121, China
| | - Jialing Huang
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Rutao Zhang
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Wenbo Liu
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Mengjue Zhu
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Li Zhou
- Wuxi Taihu Lake Management Co., Ltd, Wuxi, 214122, China
| | - Lihong Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China.
| | - Qing Zhou
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China.
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32
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Shi S, Wang X, Ye Z, Chen W, Li T, Chen J, Li J. Effect of the combined application of fungal residue and chemical fertilizers on the mineralization of soil organic carbon in paddy fields. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:23292-23304. [PMID: 31197671 DOI: 10.1007/s11356-019-05603-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 05/27/2019] [Indexed: 06/09/2023]
Abstract
Improving soil quality, reducing waste, and mitigating climate change require an understanding of the balance between soil organic carbon (SOC) accumulation and depletion after the application of different quantities of fungal residue and chemical fertilizers. We evaluated the mineralized carbon (MC) content and mineralization rate (MR) after nine applications of chemical fertilizers (C) and fungal residue (F) in paddy fields, at rates of 0, 50, and 100%. A double exponential model was used to calculate the potential rates of MC and SOC turnover. The combined application of fungal residue and chemical fertilizers led to significantly higher MC and MR, by 24.97-100.05 and 24.36-98.07%, respectively, during 57 days of incubation than that of the control. The MC and MR values were highest with the C50F100 treatment. Simulations with the double exponential model showed that both the active SOC pools (C1) and potential SOC mineralization flux C1 + C2 were highest with C50F100, and the MR constants, k1 and k2, were highest with C100F100. The potential SOC MR [(C1 + C2) / SOC] was highest with C50F100. The application of fungal residue and chemical fertilizers to paddy fields effectively alleviated soil acidification caused by chemical fertilizers and increased the nutrient content, MC, MR, C1, and C1 + C2 of soils. However, the over-use of fungal residue or chemical fertilizers produces the reverse effects. Therefore, appropriate quantities of chemical fertilizers and fungal residue need to be applied to enhance the carbon sequestration capacity of soils while improving the MC and MR.
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Affiliation(s)
- Sibo Shi
- College of Environmental and Resource Science, Zhejiang Provincial Key Laboratory of Contaminated Soil Remediation, Zhejiang Agricultural and Forestry University, Hangzhou, 311300, China
| | - Xudong Wang
- College of Environmental and Resource Science, Zhejiang Provincial Key Laboratory of Contaminated Soil Remediation, Zhejiang Agricultural and Forestry University, Hangzhou, 311300, China.
| | - Zhengqian Ye
- College of Environmental and Resource Science, Zhejiang Provincial Key Laboratory of Contaminated Soil Remediation, Zhejiang Agricultural and Forestry University, Hangzhou, 311300, China
| | - Wenbo Chen
- College of Environmental and Resource Science, Zhejiang Provincial Key Laboratory of Contaminated Soil Remediation, Zhejiang Agricultural and Forestry University, Hangzhou, 311300, China
| | - Ting Li
- College of Environmental and Resource Science, Zhejiang Provincial Key Laboratory of Contaminated Soil Remediation, Zhejiang Agricultural and Forestry University, Hangzhou, 311300, China
| | - Junhui Chen
- College of Environmental and Resource Science, Zhejiang Provincial Key Laboratory of Contaminated Soil Remediation, Zhejiang Agricultural and Forestry University, Hangzhou, 311300, China
| | - Jianwu Li
- College of Environmental and Resource Science, Zhejiang Provincial Key Laboratory of Contaminated Soil Remediation, Zhejiang Agricultural and Forestry University, Hangzhou, 311300, China
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Yu Y, Wu G, Wang C, Lu N, Yuan X, Zhu X. Pollution characteristics of antibiotics and antibiotic resistance of coliform bacteria in the Yitong River, China. ENVIRONMENTAL MONITORING AND ASSESSMENT 2019; 191:516. [PMID: 31350602 DOI: 10.1007/s10661-019-7660-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 07/15/2019] [Indexed: 06/10/2023]
Abstract
In this study, the concentrations of nine typical antibiotics, including sulfadiazine (SD), sulfamerazine (SMR), sulfamethazine (SM2), sulfamethoxazole (SMZ), ofloxacin (OFX), ciprofloxacin (CIP), trimethoprim (TMP), oxytetracycline (OTC), and tetracycline hydrochloride (TC), were detected in the Yitong River by solid-phase extraction high-performance liquid chromatography. The concentrations of the antibiotics were analyzed. Additionally, an improved immobilized substrate enzyme substrate method (DST-enzyme substrate method) was developed and used to evaluate the antibiotic resistance of coliform bacteria to OFX, CIP, enrofloxacin (ENR), TC, sulfisoxazole (SOX), and TMP in the Yitong River. The results showed that the concentrations of the nine antibiotics ranged from nd (not detected) to 1.361 μg/L. The detection rate and concentration of OFX were the highest, followed by CIP, and the detection rate and concentration of SM2 and OTC were the lowest. The detection rate and concentrations of antibiotics were higher in August and November than those in May. The antibiotics were mainly distributed in the livestock sewage discharge and suburban domestic sewage discharge areas. Moreover, the drug resistance of total coliform bacteria to fluoroquinolones, sulfonamides, tetracyclines, and TMP varied with season.
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Affiliation(s)
- Yangyang Yu
- School of Environment, Northeast Normal University, Changchun, 130117, People's Republic of China
| | - Guanlan Wu
- School of Environment, Northeast Normal University, Changchun, 130117, People's Republic of China
| | - Chengzhi Wang
- School of Environment, Northeast Normal University, Changchun, 130117, People's Republic of China
| | - Nan Lu
- School of Environment, Northeast Normal University, Changchun, 130117, People's Republic of China
| | - Xing Yuan
- School of Environment, Northeast Normal University, Changchun, 130117, People's Republic of China.
| | - Xiaolin Zhu
- School of Environment, Northeast Normal University, Changchun, 130117, People's Republic of China.
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Maruthupandy M, Seo J. Allyl isothiocyanate encapsulated halloysite covered with polyacrylate as a potential antibacterial agent against food spoilage bacteria. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110016. [PMID: 31546351 DOI: 10.1016/j.msec.2019.110016] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 03/20/2019] [Accepted: 07/25/2019] [Indexed: 01/23/2023]
Abstract
Allyl isothiocyanate (AITC) is a highly volatile organic compound that is a potential antibacterial agent against food spoilage bacteria. Naturally formed halloysite nanotubes (HNTs) have a length of 1 μm and diameter ranging from 10 to 50 nm. The biocompatibility of HNT allows safe release of drugs to bacterial cells at a relatively low concentration compared to other systems. We encapsulated AITC inside HNTs that were then coated with sodium polyacrylate (PA). The HNT-AITC-PA nanocomposites (NCs) were characterized by Fourier-transform infrared spectroscopy, thermal gravimetric, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy analyses. In vitro antibacterial activity was evaluated against gram positive (Staphylococcus aureus) and gram negative (Escherichia coli) bacteria capable of food spoilage. HNT-AITC-PA NCs effectively inhibited the growth of both bacteria. The activity was pronounced against E. coli at 100 μg/mL, with concentrations of 25 μg/mL and 200 μg/mL reducing the viable cell population by 41% and 96%, respectively. Thus, HNT-AITC-PA NCs are a novel and promising material against food spoilage bacteria for use in active antibacterial food packaging.
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Affiliation(s)
- Muthuchamy Maruthupandy
- Department of Packaging, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do 26493, South Korea
| | - Jongchul Seo
- Department of Packaging, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do 26493, South Korea.
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Liu S, Sun S. Combined QSAR/QSPR, Molecular Docking, and Molecular Dynamics Study of Environmentally Friendly PBDEs with Improved Insulating Properties. Chem Res Chin Univ 2019. [DOI: 10.1007/s40242-019-8353-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Qi C, Xu XG, Shi K, Zhang LM, Zhou Y, Lin H, Wu XT, Wang GX, Meng H. In situ resuspension rate monitoring method in the littoral zone with multi-ecotypes of a shallow wind-disturbed lake. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:7476-7485. [PMID: 30659484 DOI: 10.1007/s11356-018-04059-0] [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: 04/07/2018] [Accepted: 12/20/2018] [Indexed: 06/09/2023]
Abstract
Sediment resuspension has been recognized as a crucial internal process in aquatic ecosystems. However, there is still a lack of reliable measuring methods due to the complex hydrodynamic conditions in large shallow eutrophic lakes. In this study, sequential sediment traps (SST) and instantaneous multiple point (IMP) methods were compared at 6 sites located in the littoral zone of Zhushan Bay in Lake Taihu. Results show that the average resuspension rates (RRs) estimated using the IMP method at sites 1 to 6 were 266.39, 272.79, 235.17, 254.95, 392.25, and 483.85 g·m-2d-1, respectively. While the RRs estimated using the SST method were 195.16, 236.99, 116.76, 156.23, 389.53, and 509.85 g·m-2d-1, respectively. In wind-disturbed areas, both methods were suitable for RR analysis in large and shallow eutrophic lakes and SST provides high-resolution temporal RR estimations. However, in the areas with cyanobacterial blooms and vegetation cover, the IMP method overestimated the RR. Therefore, SST was more suitable across different conditions in large and shallow eutrophic lakes, providing a simple, accurate, and high-resolution temporal estimation of RR, while furthering our understanding of lake evolution processes.
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Affiliation(s)
- Chuang Qi
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
| | - Xiao-Guang Xu
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China
- Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
- Jiangsu Key Laboratory of Environmental Change and Ecological Construction, 1 Wenyuan Road, Nanjing, 210023, China
| | - Kuan Shi
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
| | - Li-Min Zhang
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China.
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China.
- Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China.
- Jiangsu Key Laboratory of Environmental Change and Ecological Construction, 1 Wenyuan Road, Nanjing, 210023, China.
| | - Yang Zhou
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
| | - Hui Lin
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
| | - Xin-Ting Wu
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
| | - Guo-Xiang Wang
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China.
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China.
- Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China.
- Jiangsu Key Laboratory of Environmental Change and Ecological Construction, 1 Wenyuan Road, Nanjing, 210023, China.
| | - Han Meng
- School of Environment, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China
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Zheng C, Zheng H, Yang Z, Liu S, Li X, Zhang Y, Weng W, Gao X. Experimental study on the evaporation and chlorine migration of desulfurization wastewater in flue gas. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:4791-4800. [PMID: 30565110 DOI: 10.1007/s11356-018-3816-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 11/20/2018] [Indexed: 06/09/2023]
Abstract
Wastewater from a limestone-gypsum wet desulfurization system cannot be directly reused or discharged due to its high suspended matter content and complex water composition. Desulfurization wastewater evaporation in flue gas is an effective way to dispose wastewater. Multicomponent soluble chlorine salts exist in the desulfurization wastewater. During the evaporation, chlorine enters into the flue gas due to volatilization, which accelerates the enrichment rate of the Cl- concentration in the desulfurization slurry and leads to an increase in wastewater production. This study explored the chlorine migration of various chlorine salt solutions and typical desulfurization wastewater at high temperature during the evaporation process of concentrated wastewater by a laboratory-scale tube furnace and a pilot-scale system. Results showed that when NaCl-evaporated substance was heated, the chlorine ion hardly volatilized. For the evaporated substances of CaCl2 and MgCl2 solutions, some of the crystal water was lost, and hydrolysis occurred to generate gaseous HCl. NH4Cl was easily sublimed, and the decomposition temperature was lowest. A pilot study on spray evaporation of desulfurization wastewater in flue gas showed that the particle size of the evaporated product increased and the main particle size was within 2.5-10 μm with increasing flue gas temperature. Increasing the mass ratio of gas to liquid significantly reduced the particle size of the atomized particles, thereby reducing the average particle size of the evaporated particles. The HCl concentration increased with increasing flue gas temperature. When the flue gas temperature was 350 °C, the concentration of HCl was 40 ppm, and the escape rate of chlorine in the desulfurization wastewater was approximately 30% using typical wastewater from a limestone-gypsum wet desulfurization system.
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Affiliation(s)
- Chenghang Zheng
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China
| | - Hao Zheng
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China
| | - Zhengda Yang
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China
| | - Shaojun Liu
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China
| | - Xiang Li
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China
| | - Youngxin Zhang
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China
| | - Weiguo Weng
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China
| | - Xiang Gao
- State Key Laboratory of Clean Energy Utilization, National Environmental Protection Coal-fired Air Pollution Control Engineering Technology Center, Zhejiang University, Hangzhou, 310027, China.
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Franks CG, Pearce DW, Rood SB. A prescription for drug-free rivers: uptake of pharmaceuticals by a widespread streamside willow. ENVIRONMENTAL MANAGEMENT 2019; 63:136-147. [PMID: 30421133 DOI: 10.1007/s00267-018-1120-8] [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: 03/13/2018] [Accepted: 10/30/2018] [Indexed: 06/09/2023]
Abstract
Following human excretion and limited removal with wastewater treatment, pharmaceuticals are accumulating in rivers worldwide. These chemicals can challenge the health of fish and aquatic organisms and since rivers provide drinking water sources, there is concern for cumulative exposure to humans. In this study, we discovered that sandbar willow (Salix exigua), a predominant riparian shrub along streams throughout North America, has the capacity to quickly remove pharmaceuticals from aqueous solutions. Our study tracked [3H]- or [14C]-labeled substances including 17α-ethynylestradiol (EE2), a synthetic estrogen in oral contraceptives; the antihypertensive, diltiazem (DTZ); and the anti-anxiety drug, diazepam (DZP); and for comparison, atrazine (ATZ), a root-absorbed herbicide. In growth chambers, willow saplings removed 40-80% of the substances from solutions in 24 h. Following uptake, the EE2 and DTZ were retained within the roots, while DZP and ATZ were partly passed on to the shoots. The absorbed EE2 was unextractable and apparently bound to the root tissue, while DTZ, DZP, and ATZ remained largely soluble (extractable). The uptake and translocation of the pharmaceuticals, reflected in the transpiration stream and root concentration factors, were reasonably predicted from their physicochemical properties, including octanol-water partitioning coefficients. These findings suggest the removal of pharmaceuticals as an unrecognized ecosystem service provided by riparian vegetation and especially the inundation tolerant sandbar willow. This encourages the conservation of riparian willows that line riverbanks, to remove pharmaceuticals and other contaminants. This phytoremediation also encourages the preservation of complex, braided channels and islands, which increase the extent of stream shorelines and riparian willows.
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Affiliation(s)
- Carmen G Franks
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, T1K 3M4, Canada
| | - David W Pearce
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, T1K 3M4, Canada
| | - Stewart B Rood
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, T1K 3M4, Canada.
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Dai Y, Li M, Liu F, Xue M, Wang Y, Zhao C. Graphene oxide wrapped copper-benzene-1,3,5-tricarboxylate metal organic framework as efficient absorbent for gaseous toluene under ambient conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:2477-2491. [PMID: 30471061 DOI: 10.1007/s11356-018-3657-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 10/31/2018] [Indexed: 06/09/2023]
Abstract
The ultrasonic-assisted hydrothermal and ethanol activation method was proposed to synthesize copper-benzene-1,3,5-tricarboxylate (Cu-BTC) metal organic framework and Cu-BTC/graphene oxide (GO) composites (Cu-BTC@GO). The dynamic adsorption behavior of toluene on two adsorbents was studied and compared with that of GO and reduced graphene oxide (RGO). The Cu-BTC@GO exhibited high adsorption capacity (183 mg/g) for toluene, which is nearly three times as much as that of Cu-BTC (62.7 mg/g) with the GO mass fraction of 20%. Furthermore, the adsorption of toluene on Cu-BTC@GO composites was positively correlated with the initial concentration of toluene and the adsorbent dosage, and negatively correlated with the temperature. The adsorption data of toluene on Cu-BTC@GO composites were well in accordance with pseudo-first kinetics model. Langmuir model had a better fit than Freundlich model. The adsorption thermodynamic results showed that the adsorption process was mainly physical adsorption and the adsorption process was spontaneous at low temperature. After five adsorption-desorption cycles, the adsorption efficiency can still reach 82.1%.This study will help to draw a promising roadmap to describe the adsorption performance of Cu-BTC@GO composites for toluene.
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Affiliation(s)
- Yexin Dai
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
| | - Meng Li
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
| | - Fang Liu
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China.
- State Key Laboratory of Petroleum Pollution Control, Beijing, 102206, People's Republic of China.
| | - Ming Xue
- State Key Laboratory of Petroleum Pollution Control, Beijing, 102206, People's Republic of China
| | - Yongqiang Wang
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
- State Key Laboratory of Petroleum Pollution Control, Beijing, 102206, People's Republic of China
| | - Chaocheng Zhao
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
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Hariram M, Vivekanandhan S. Phytochemical Process for the Functionalization of Materials with Metal Nanoparticles: Current Trends and Future Perspectives. ChemistrySelect 2018. [DOI: 10.1002/slct.201802748] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Muruganandham Hariram
- Sustainable Materials and Nanotechnology Lab (SMNL); Department of Physics, V.H.N.S.N. College, Virudhunagar-; 626 001, Tamil Nadu India
- Department of Physics; Bharathidasan University; Tiruchirappalli-620 024, Tamil Nadu India
| | - Singaravelu Vivekanandhan
- Sustainable Materials and Nanotechnology Lab (SMNL); Department of Physics, V.H.N.S.N. College, Virudhunagar-; 626 001, Tamil Nadu India
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Song T, Su X, He J, Liang Y, Zhou T, Liu C. Selenium (Se) uptake and dynamic changes of Se content in soil-plant systems. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:34343-34350. [PMID: 30298355 DOI: 10.1007/s11356-018-3373-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 10/01/2018] [Indexed: 06/08/2023]
Abstract
In this study, we collected crop plants and associated soil samples and determined these for selenium (Se) content to analyze the uptake, enrichment, and translocation of Se in the different soil-plant systems of an agricultural production area, elucidate the dynamic mechanisms relating to Se content in plants and soil during different growth periods, and screen plants for high Se enrichment ability. Bioconcentration factor determinations indicated that the grains of rice have the strongest Se enrichment ability, followed by soybean and corn. Translocation factor analysis indicated that the grains of rice and corn have similar low translocation abilities for Se compared with soybean. Within the study area, the Se content in plants was closely related to the soil available Se content and varied considerably among different growth periods and plant organs. This study provides a theoretical basis for the development and utilization of local agricultural products.
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Affiliation(s)
- Tiejun Song
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China
- Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China
| | - Xiaosi Su
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China.
- Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China.
| | - Jin He
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China
- Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China
- Center for Hydrogeology and Environmental Geology Survey, China Geological Survey, Baoding, 071051, China
| | - Yukai Liang
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China
- Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China
| | - Tao Zhou
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China
- Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China
| | - Cong Liu
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China
- Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China
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Fortuna L, Tretiach M. Effects of site-specific climatic conditions on the radial growth of the lichen biomonitor Xanthoria parietina. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:34017-34026. [PMID: 30280342 DOI: 10.1007/s11356-018-3155-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/04/2018] [Indexed: 06/08/2023]
Abstract
The protocols commonly applied in surveys with lichens as biomonitors of airborne trace elements require analyses of samples derived from thalli or parts of thalli grown in the last year before sampling, under the postulation that samples of the same size are of the same age. Unfortunately, the influence of ecological site-specific factors on lichen growth is still largely ignored, so that samples of the same size collected in environmentally and climatically diverse sites might actually differ in age. This work aims at quantifying the influence of climatic conditions on the radial growth rates (RaGRs) of Xanthoria parietina, one of the most popular lichen biomonitors. RaGR was monitored in seven populations distributed along an altitudinal transect of 30 km in the Classical Karst (NE Italy), from 20 to 500 m above sea level. For c. 17 months, lobe growth was measured seasonally with a digital calliper, and site-specific climatic variables were monitored by means of thermo-hygrometric sensors and implemented by meteorological data. Finally, the lobe growth of X. parietina was modelled as a function of 18 environmental variables. Results revealed that thalli of relatively dry sites had significantly lower seasonal RaGR with respect to moister ones. Considering that cumulative precipitations were equally distributed along the transect, it was concluded that RaGR of X. parietina is affected negatively by high air temperatures and positively by high relative humidity. The importance of RaGR variation in lichen bioaccumulation studies is critically discussed.
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Affiliation(s)
- Lorenzo Fortuna
- Department of Life Sciences, University of Trieste, Via L. Giorgieri 10, 34127, Trieste, Italy
| | - Mauro Tretiach
- Department of Life Sciences, University of Trieste, Via L. Giorgieri 10, 34127, Trieste, Italy.
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Li N, Wang Z, Zhang Z. Influence of plant structure and flow path interactions on the plant purification system: dynamic evolution of the SO 2 pollution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:35099-35108. [PMID: 30328038 DOI: 10.1007/s11356-018-3461-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 10/12/2018] [Indexed: 06/08/2023]
Abstract
Sulfur dioxide is a major air pollutant in the environment. Fortunately, the plant purification system can effectively reduce SO2 pollution. However, the effect mechanism of plant purification system for the dynamic evolution of SO2 remains incompletely clear. In this work, inspired by the "Boston ivy," we successfully designed and constructed a semi-continuous plant system. Subsequently, based on the "vine-like plant" and the "island-like plant," the semi-continuous plant system and the isolated plant system are selected as the models of plant purification system, respectively. The dynamic evolution of SO2 in the plant systems is investigated using the computational fluid dynamic (CFD) method. It is demonstrated that the dynamic evolution of SO2 is impacted by the plant structure and the flow path ((cg/lg) + (cl/ll)). In the semi-continuous plant system, the strong flow paths with gradually weakened fluctuation are restricted by this special plant structure, the length of flow paths are extended, and more SO2 can be dissolved. In the isolated plant system, the mild flow paths with linear relationship can easily pass through the plants, such that only a little SO2 is dissolved. Overall, the present study opens a new path into the dynamic evolution of SO2 pollution in the plant systems, which helps providing guidance for the designing of plant purification system.
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Affiliation(s)
- Ni Li
- College of Humanities and Social Development, Northwest A&F University, Yangling, 712100, China
| | - Zhe Wang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Science, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Zhongchao Zhang
- College of Humanities and Social Development, Northwest A&F University, Yangling, 712100, China.
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Ribeiro VP, Arruda C, Abd El-Salam M, Bastos JK. Brazilian medicinal plants with corroborated anti-inflammatory activities: a review. PHARMACEUTICAL BIOLOGY 2018; 56:253-268. [PMID: 29648503 PMCID: PMC6130656 DOI: 10.1080/13880209.2018.1454480] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
CONTEXT Inflammatory disorders are common in modern life, and medicinal plants provide an interesting source for new compounds bearing anti-inflammatory properties. In this regard, Brazilian medicinal plants are considered to be a promising supply of such compounds due to their great biodiversity. OBJECTIVES To undertake a review on Brazilian medicinal plants with corroborated anti-inflammatory activities by selecting data from the literature reporting the efficacy of plants used in folk medicine as anti-inflammatory, including the mechanisms of action of their extracts and isolated compounds. METHODS A search in the literature was undertaken by using the following Web tools: Web of Science, SciFinder, Pub-Med and Science Direct. The terms 'anti-inflammatory' and 'Brazilian medicinal plants' were used as keywords in search engine. Tropicos and Reflora websites were used to verify the origin of the plants, and only the native plants of Brazil were included in this review. The publications reporting the use of well-accepted scientific protocols to corroborate the anti-inflammatory activities of Brazilian medicinal plants with anti-inflammatory potential were considered. RESULTS We selected 70 Brazilian medicinal plants with anti-inflammatory activity. The plants were grouped according to their anti-inflammatory mechanisms of action. The main mechanisms involved inflammatory mediators, such as interleukins (ILs), nuclear factor kappa B (NF-κB), prostaglandin E2 (PGE2), cyclooxygenase (COX) and reactive oxygen species (ROS). CONCLUSIONS The collected data on Brazilian medicinal plants, in the form of crude extract and/or isolated compounds, showed significant anti-inflammatory activities involving different mechanisms of action, indicating Brazilian plants as an important source of anti-inflammatory compounds.
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Affiliation(s)
- Victor Pena Ribeiro
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Caroline Arruda
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Mohamed Abd El-Salam
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Jairo Kenupp Bastos
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
- CONTACT Jairo Kenupp BastosDepartment of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP14040-903, Brazil
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Guo Y, Xue Q, Zhang H, Wang N, Chang S, Fang Y, Wang H, Yuan F, Pang H, Chen H. Highly efficient treatment of real benzene dye intermediate wastewater by simple limestone and lime neutralization-coagulation with improved Fenton oxidation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:31125-31135. [PMID: 30187411 DOI: 10.1007/s11356-018-3101-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 08/28/2018] [Indexed: 06/08/2023]
Abstract
Multistage Fenton oxidation is a favored method for the treatment of benzene dye intermediate (BDI) wastewater, but the pH adjustments required after each stage of the Fenton process with a simple way is still a challenge. Limestone pretreatment and lime neutralization-coagulation were used to solve the problem in multistage Fenton process. First, we determined the optimal conditions of Fenton oxidation using the Box-Behnken response surface method. Limestone pretreatment before the multistage Fenton process allowed for simultaneous pH adjustment and 14.15% COD removal. Most notably, the lime cream neutralization-coagulation process effectively adjusted the pH after each stage of the Fenton process. The optimum CaO particle size, lime mass fraction, mixing time, and stirring speed were determined by orthogonal tests. COD removal (89.23%) was obtained when lime cream neutralization-coagulation was applied to the three-staged Fenton process, while only 58.57% COD removal was obtained by the unadjusted single-staged Fenton process. The COD and wastewater color were reduced from 10,600 mg/L and 12,200 multiples to 495 mg/L and 20 multiples, respectively, using the adjusted process. This improved method provides a promising cost-effective way to efficiently treat real BDI wastewater.
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Affiliation(s)
- Ying Guo
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China
| | - Qiang Xue
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China.
| | - Huanzhen Zhang
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China
| | - Ning Wang
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China
| | - Simiao Chang
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China
| | - Youcun Fang
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China
| | - Hui Wang
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China
| | - Fang Yuan
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China
| | - Hao Pang
- Beijing Z.D.H.K. Environmental Science & Technology Co., Ltd., Beijing, 100120, China
| | - Honghan Chen
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China.
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46
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Qian H, Cheng Y, Yang C, Wu S, Zeng G, Xi J. Performance and biofilm characteristics of biotrickling filters for ethylbenzene removal in the presence of saponins. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:30021-30030. [PMID: 29177780 DOI: 10.1007/s11356-017-0776-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 11/15/2017] [Indexed: 06/07/2023]
Abstract
Saponins were applied to enhance ethylbenzene removal in biotrickling filters (BTFs), and comparison experiments were carried out to evaluate the effects of saponins on ethylbenzene removal and biofilm characteristics at various saponin concentrations. Results showed that the optimum concentration of saponins was 40 mg/L and a maximum removal efficiency (RE) of ethylbenzene reached 84.3%. When the inlet ethylbenzene concentration increased, ranging from 750 to 2300 mg/m3, the RE decreased from 92.1 to 60.8% and from 69.4 to 44.2% for BTF1 and BTF2 in which saponin was and was not added, respectively. The corresponding RE declined from 91.1 to 40.8% and from 71.5 to 35.8% with a decreased empty bed residence time ranging from 45 to 7.5 s. Additionally, significant differences existed between both BTFs not only in the contents of polysaccharide and proteins but also in the surface charge of biofilms, and the ratio of protein to polysaccharide increased with the increase of saponin concentration, which indicated the presumable effect of saponins on liquid-biofilm transfer rates of ethylbenzene. Mechanisms for the enhanced removal of hydrophobic volatile organic compounds at the presence of surfactants were also discussed.
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Affiliation(s)
- Hui Qian
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan, 410082, China
| | - Yan Cheng
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan, 410082, China
| | - Chunping Yang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan, 410082, China.
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, Zhejiang, China.
| | - Shaohua Wu
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan, 410082, China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan, 410082, China
| | - Jinying Xi
- School of Environment, Tsinghua University, Beijing, 100084, China.
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Turap Y, Talifu D, Wang X, Aierken T, Rekefu S, Shen H, Ding X, Maihemuti M, Tursun Y, Liu W. Concentration characteristics, source apportionment, and oxidative damage of PM 2.5-bound PAHs in petrochemical region in Xinjiang, NW China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:22629-22640. [PMID: 29846897 DOI: 10.1007/s11356-018-2082-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 04/19/2018] [Indexed: 06/08/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are of considerable concern due to their potential as human carcinogens. Thus, determining the characteristics, potential source, and examining the oxidative capacity of PAHs to protect human health is essential. This study investigated the PM2.5-bound PAHs at Dushanzi, a large petrochemical region in Xinjiang as well as northwest China. A total of 33 PM2.5 samples with 13 PAHs, together with molecular tracers (levoglucosan, and element carbon), were analyzed during the non-heating and heating periods. The results showed that the PM2.5 concentrations were 70.22 ± 22.30 and 95.47 ± 61.73 μg/m3, while that of total PAHs were 4.07 ± 2.03 and 60.33 ± 30.80 ng/m3 in sampling period, respectively. The fluoranthene, pyrene, chrysene, benzo[b]fluoranthene, and benzo[k]fluoranthene were the most abundant (top five) PAHs, accounting for 71.74 and 72.80% of total PAH mass during non-heating and heating periods. The BaP equivalent (BaPeq) concentration exceeded 1 ng/m3 as recommended by National Ambient Air Quality Standards during heating period. The diagnostic ratios and positive matrix factorization indicated that oil industry, biomass burning, coal combustion, and vehicle emissions are the primary sources. The coal combustion remarkably increased during heating period. The plasmid scission assay (PSA) results showed that higher DNA damage rate was observed during heating period. PAHs in PM2.5 such as Chr, BaP, and IcdP were found to have significantly positive correlations with the plasmid DNA damage rates. Additionally, the relationship among BaPeq and DNA damage rate suggested that synergistic reaction may modify the toxicity of PAHs.
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Affiliation(s)
- Yusan Turap
- Key Laboratory of Coal Clean Conversion & Chemical Engineering Process, College of Chemistry and Chemical Engineering, Xinjiang University, Ürümqi, 830046, China
| | - Dilinuer Talifu
- Key Laboratory of Coal Clean Conversion & Chemical Engineering Process, College of Chemistry and Chemical Engineering, Xinjiang University, Ürümqi, 830046, China.
| | - Xinming Wang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Tuergong Aierken
- Key Laboratory of Coal Clean Conversion & Chemical Engineering Process, College of Chemistry and Chemical Engineering, Xinjiang University, Ürümqi, 830046, China
| | - Suwubinuer Rekefu
- Key Laboratory of Coal Clean Conversion & Chemical Engineering Process, College of Chemistry and Chemical Engineering, Xinjiang University, Ürümqi, 830046, China
| | - Hao Shen
- Key Laboratory of Coal Clean Conversion & Chemical Engineering Process, College of Chemistry and Chemical Engineering, Xinjiang University, Ürümqi, 830046, China
| | - Xiang Ding
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Mailikezhati Maihemuti
- Key Laboratory of Coal Clean Conversion & Chemical Engineering Process, College of Chemistry and Chemical Engineering, Xinjiang University, Ürümqi, 830046, China
| | - Yalkunjan Tursun
- Key Laboratory of Coal Clean Conversion & Chemical Engineering Process, College of Chemistry and Chemical Engineering, Xinjiang University, Ürümqi, 830046, China
| | - Wei Liu
- Environmental Monitoring Station, Dushanzi, 838600, China
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Hongdou L, Shiping L, Hao L. Existing agricultural ecosystem in China leads to environmental pollution: an econometric approach. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:24488-24499. [PMID: 29909537 DOI: 10.1007/s11356-018-2461-9] [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: 02/26/2018] [Accepted: 05/30/2018] [Indexed: 06/08/2023]
Abstract
Sustainable agriculture ensures food security and prevents starvation. However, the need to meet the increasing food demands of the growing population has led to poor and unsustainable agricultural practices, which promote environmental degradation. Given the contributions of agricultural ecosystems to environmental pollution, we investigated the impact of the agricultural ecosystem on environmental pollution in China using time series data from 1960 to 2014. We employed several methods for econometric analysis including the unit root test, Johansen test of cointegration, Granger causality test, and vector error correction model. Evidence based on the long-run elasticity indicates that a 1% increase in the emissions of carbon dioxide (CO2) equivalent to nitrous oxide from synthetic fertilizers will increase the emissions of CO2 by 1.52% in the long run. Similarly, a 1% increase in the area of harvested rice paddy, cereal production, biomass of burned crop residues, and agricultural GDP will increase the carbon dioxide emissions by 0.85, 0.63, 0.37, and 0.22%, respectively. The estimated results indicate that there are long-term equilibrium relationships among the selected variables considered for the agricultural ecosystem and carbon dioxide emissions. In particular, we identified bidirectional causal associations between CO2 emissions, biomass of burned crop residues, and cereal production. Graphical abstract ᅟ.
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Affiliation(s)
- Lei Hongdou
- College of Economics and Management, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, China
| | - Li Shiping
- College of Economics and Management, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, China.
| | - Li Hao
- College of Economics and Management, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, China
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Pan Y, Wernberg T, de Bettignies T, Holmer M, Li K, Wu J, Lin F, Yu Y, Xu J, Zhou C, Huang Z, Xiao X. Screening of seaweeds in the East China Sea as potential bio-monitors of heavy metals. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:16640-16651. [PMID: 29603103 DOI: 10.1007/s11356-018-1612-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 02/25/2018] [Indexed: 06/08/2023]
Abstract
Seaweeds are good bio-monitors of heavy metal pollution and have been included in European coastal monitoring programs. However, data for seaweed species in China are scarce or missing. In this study, we explored the potential of seaweeds as bio-monitor by screening the natural occurring seaweeds in the "Kingdom of seaweed and shellfish" at Dongtou Islands, the East China Sea. Totally, 12 seaweed species were collected from six sites, with richness following the sequence of Rhodophyta > Phaeophyta > Chlorophyta. The concentration of heavy metals (Cu, Cr, Ni, Zn, Pb, Cd, As) in the seaweeds was determined, and the bioaccumulation coefficient was calculated. A combination of four seaweeds, Pachydictyon coriaceum, Gelidium divaricatum, Sargassum thunbergii, and Pterocladiella capillacea, were proposed as bio-monitors due to their high bioaccumulation capabilities of specific heavy metals in the East China Sea and hence hinted the importance of using seaweed community for monitoring of pollution rather than single species. Our results provide first-hand data for the selection of bio-monitor species for heavy metals in the East China Sea and contribute to selection of cosmopolitan bio-monitor communities over geographical large area, which will benefit the establishment of monitoring programs for coastal heavy metal contamination.
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Affiliation(s)
- Yaoru Pan
- Institute of Island and Coastal Ecosystem, Ocean College, Zhejiang University, 1 Zheda Road, Zhoushan, Zhejiang, 316000, China
| | - Thomas Wernberg
- UWA Oceans Institute and School of Plant Biology, University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Thibaut de Bettignies
- Service du Patrimoine Naturel, Museum National d'Histoire Naturelle, 57 Rue Cuvier, 75005, Paris, France
| | - Marianne Holmer
- Department of Biology, University of Southern Denmark, Campusvej 55, 5230, Odense, Denmark
| | - Ke Li
- Institute of Island and Coastal Ecosystem, Ocean College, Zhejiang University, 1 Zheda Road, Zhoushan, Zhejiang, 316000, China
| | - Jiaping Wu
- Institute of Island and Coastal Ecosystem, Ocean College, Zhejiang University, 1 Zheda Road, Zhoushan, Zhejiang, 316000, China
| | - Fang Lin
- Institute of Island and Coastal Ecosystem, Ocean College, Zhejiang University, 1 Zheda Road, Zhoushan, Zhejiang, 316000, China
| | - Yan Yu
- Institute of Island and Coastal Ecosystem, Ocean College, Zhejiang University, 1 Zheda Road, Zhoushan, Zhejiang, 316000, China
| | - Jiang Xu
- Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, 15213, USA
| | - Chaosheng Zhou
- Marine Aquaculture Research Institute of Zhejiang Province, 6-1 Hetong Bridge, Wenzhou, Zhejiang, 325005, China
| | - Zhixing Huang
- Marine Aquaculture Research Institute of Zhejiang Province, 6-1 Hetong Bridge, Wenzhou, Zhejiang, 325005, China
| | - Xi Xiao
- Institute of Island and Coastal Ecosystem, Ocean College, Zhejiang University, 1 Zheda Road, Zhoushan, Zhejiang, 316000, China.
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Fu SB, Feng X, Meng QF, Cai Q, Sun DA. Two new echinocystic acid derivatives catalyzed by filamentous fungus Gliocladium roseum CGMCC 3.3657. Nat Prod Res 2018; 33:1842-1848. [DOI: 10.1080/14786419.2018.1477148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Shao-Bin Fu
- Institute of Medical Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing, China
- Pharmacy School of Zunyi Medical University , Zunyi, China
| | - Xu Feng
- Institute of Medical Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing, China
- Navy Medical Research Institute , Shanghai, China
| | - Qing-Feng Meng
- Department of Public Health, Zunyi Medical University , Zunyi, China
| | - Qing Cai
- Pharmacy School of Zunyi Medical University , Zunyi, China
| | - Di-An Sun
- Institute of Medical Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing, China
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