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  1. Article ; Online: A three-year study on the treatment of domestic-industrial mixed wastewater using a full-scale hybrid constructed wetland

    A, Dan / Deng, Yang-yang / Guo, Qin-mei / Jiang, Yu / Chen, Chun-xing

    Environ Sci Pollut Res. 2023 Mar., v. 30, no. 11 p.31256-31267

    2023  

    Abstract: Three full-scale constructed wetlands (CWs), namely vertical flow (VFCW), surface flow (SFCW), and horizontal flow (HFCW) systems, were combined in a series process to form a hybrid CW, which was used for the treatment performance of domestic-industrial ... ...

    Abstract Three full-scale constructed wetlands (CWs), namely vertical flow (VFCW), surface flow (SFCW), and horizontal flow (HFCW) systems, were combined in a series process to form a hybrid CW, which was used for the treatment performance of domestic-industrial mixed wastewater and investigated over a three-year period. The hybrid CW demonstrated that it is effective and stable during the long-term treatment of high-loading mixed wastewater under different operation years, season changes, and technology processes, with the average removal efficiencies of suspended solids, chemical oxygen demand, biological oxygen demand, total nitrogen, ammonia nitrogen, nitrate nitrogen, and total phosphorous being 84, 40, 54, 54, 70, 40, and 46%, respectively. The effluent quality of the hybrid CW reached the highest discharge standard for wastewater treatment plants. First, a variety of pollutants from the mixed wastewater were effectively removed in the subsurface processes (VFCW and HFCW) via substrate adsorption and degradation of the attached biofilm. The higher dissolved oxygen content and oxygen transfer capacity values in the VFCW were favourable for the occurrence of aerobic pathways (such as nitrification and inorganic phosphorus oxidation). In addition, with the large consumption of oxygen in the previous process, the oxygen-enriching capacity of the SFCW processes, provided aerobic potential for the next stage. In particular, the plant debris in the SFCW temporarily increased the organics and suspended solids, further increasing the C/N ratio, which was beneficial for denitrification as the main nitrogen removal pathway in the HFCW.
    Keywords adsorption ; ammonium nitrogen ; biochemical oxygen demand ; biofilm ; chemical oxygen demand ; constructed wetlands ; denitrification ; dissolved oxygen ; inorganic phosphorus ; nitrate nitrogen ; nitrification ; nitrogen ; overland flow ; oxidation ; oxygen ; total nitrogen ; wastewater ; wastewater treatment
    Language English
    Dates of publication 2023-03
    Size p. 31256-31267.
    Publishing place Springer Berlin Heidelberg
    Document type Article ; Online
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-022-23936-3
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Optimization of constructed wetlands on purifying black-odorous water and their potential purification mechanism.

    Chen, Chun-Xing / Yang, Feng-Juan / Deng, Yang-Yang / A, Dan

    Water science and technology : a journal of the International Association on Water Pollution Research

    2022  Volume 86, Issue 9, Page(s) 2175–2183

    Abstract: Black-odorous water has become a common and widespread problem in recent decades. In this study, nine constructed wetlands (CWs) with different flow types, filters, plants, and hydraulic loadings were designed according to an orthogonal array ( ... ...

    Abstract Black-odorous water has become a common and widespread problem in recent decades. In this study, nine constructed wetlands (CWs) with different flow types, filters, plants, and hydraulic loadings were designed according to an orthogonal array (L
    MeSH term(s) Wetlands ; Waste Disposal, Fluid/methods ; Zeolites ; Nitrogen/analysis ; Water Purification/methods ; Biodegradation, Environmental ; Water Pollutants, Chemical/analysis ; Water ; Waste Water/analysis
    Chemical Substances Zeolites (1318-02-1) ; Nitrogen (N762921K75) ; Water Pollutants, Chemical ; Water (059QF0KO0R) ; Waste Water
    Language English
    Publishing date 2022-11-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 764273-8
    ISSN 1996-9732 ; 0273-1223
    ISSN (online) 1996-9732
    ISSN 0273-1223
    DOI 10.2166/wst.2022.351
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: A new method for estimating ore grade based on sample length weighting.

    Liu, Zhan-Ning / Deng, Yang-Yang / Tian, Rui / Liu, Zhan-Hui / Zhang, Peng-Wei

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 6208

    Abstract: Estimation of ore grade is very important for the value evaluation of ore deposits, and it directly affects the development of mineral resources. To improve the accuracy of the inverse distance weighting (IDW) method in ore grade estimation and reduce ... ...

    Abstract Estimation of ore grade is very important for the value evaluation of ore deposits, and it directly affects the development of mineral resources. To improve the accuracy of the inverse distance weighting (IDW) method in ore grade estimation and reduce the smoothing effect of the IDW method in grade estimation, the weight calculation method involved in the IDW method was improved. The length parameter of the ore sample was used to calculate the weight of the IDW method. The length of the ore samples was used as a new factor of the weighting calculation. A new method of IDW integrated with sample length weighting (IDWW) was proposed. The grade estimation of Li, Al, and Fe in porcelain clay ore was used as a case study. A comparative protocol for grade estimation via the IDWW method was designed and implemented. The number of samples involved in the estimation, sample combination, sample grade distribution, and other factors affecting the grade estimation were considered in the experimental scheme. The grade estimation results of the IDWW and the IDW methods were used for comparative analysis of grades of the original and combined samples. The estimated results of the IDWW method were also compared with those of the IDW method. The deviation analysis of the estimated grade mainly included the minimum, maximum, mean, and coefficient of variation of the ore grade. The estimation effect of IDWW method was verified. The minimum deviations of the estimated grade of Li, Al, and Fe were between 9.129% and 59.554%. The maximum deviations were between 4.210 and 22.375%. The mean deviations were between - 1.068 and 7.187%. The deviations in the coefficient of variation were between 3.076 and 36.186%. The deviations in the maximum, minimum, mean, and coefficients of variation of the IDWW were consistent with those of the IDW, demonstrating the accuracy and stability of the IDWW method. The more the samples involved in the estimation, the greater the estimation deviations of IDW and IDWW methods. The estimated deviations of Li, Al, and Fe were affected by the shape of the grade distribution, when the same estimation parameters were used. The grade distribution pattern of the samples significantly influenced the grade estimation results. The IDWW method offers significant theoretical advantages and addresses the adverse effects of uneven sample lengths on the estimates. The IDWW method can effectively reduce the smoothing effect and improves the utilization efficiency of the original samples.
    Language English
    Publishing date 2023-04-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-33509-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Purification of the secondary treatment tail water for wastewater reclamation by integrated subsurface-constructed wetlands.

    A, Dan / Guo, Qin-Mei / Deng, Yang-Yang / Jiang, Yu / Chen, Chun-Xing

    Environmental technology

    2023  Volume 45, Issue 12, Page(s) 2450–2458

    Abstract: A whole-year investigation of full-scale integrated subsurface-constructed wetlands (ISCWs) was carried out to purify the tail water from a wastewater treatment plant (WWTP) for wastewater reclamation under four plant species, four hydraulic loading ... ...

    Abstract A whole-year investigation of full-scale integrated subsurface-constructed wetlands (ISCWs) was carried out to purify the tail water from a wastewater treatment plant (WWTP) for wastewater reclamation under four plant species, four hydraulic loading rates (HLRs), and four seasons. The results showed that ISCWs were effective for the purification of WWTP discharge, with the average removal efficiencies of COD, NH
    MeSH term(s) Wastewater ; Wetlands ; Waste Disposal, Fluid/methods ; Nitrogen/analysis ; Water Purification/methods ; Environmental Pollutants ; Phosphorus
    Chemical Substances Wastewater ; Nitrogen (N762921K75) ; Environmental Pollutants ; Phosphorus (27YLU75U4W)
    Language English
    Publishing date 2023-02-20
    Publishing country England
    Document type Journal Article
    ISSN 1479-487X
    ISSN (online) 1479-487X
    DOI 10.1080/09593330.2023.2176260
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: A three-year study on the treatment of domestic-industrial mixed wastewater using a full-scale hybrid constructed wetland.

    A, Dan / Deng, Yang-Yang / Guo, Qin-Mei / Jiang, Yu / Chen, Chun-Xing

    Environmental science and pollution research international

    2022  Volume 30, Issue 11, Page(s) 31256–31267

    Abstract: Three full-scale constructed wetlands (CWs), namely vertical flow (VFCW), surface flow (SFCW), and horizontal flow (HFCW) systems, were combined in a series process to form a hybrid CW, which was used for the treatment performance of domestic-industrial ... ...

    Abstract Three full-scale constructed wetlands (CWs), namely vertical flow (VFCW), surface flow (SFCW), and horizontal flow (HFCW) systems, were combined in a series process to form a hybrid CW, which was used for the treatment performance of domestic-industrial mixed wastewater and investigated over a three-year period. The hybrid CW demonstrated that it is effective and stable during the long-term treatment of high-loading mixed wastewater under different operation years, season changes, and technology processes, with the average removal efficiencies of suspended solids, chemical oxygen demand, biological oxygen demand, total nitrogen, ammonia nitrogen, nitrate nitrogen, and total phosphorous being 84, 40, 54, 54, 70, 40, and 46%, respectively. The effluent quality of the hybrid CW reached the highest discharge standard for wastewater treatment plants. First, a variety of pollutants from the mixed wastewater were effectively removed in the subsurface processes (VFCW and HFCW) via substrate adsorption and degradation of the attached biofilm. The higher dissolved oxygen content and oxygen transfer capacity values in the VFCW were favourable for the occurrence of aerobic pathways (such as nitrification and inorganic phosphorus oxidation). In addition, with the large consumption of oxygen in the previous process, the oxygen-enriching capacity of the SFCW processes, provided aerobic potential for the next stage. In particular, the plant debris in the SFCW temporarily increased the organics and suspended solids, further increasing the C/N ratio, which was beneficial for denitrification as the main nitrogen removal pathway in the HFCW.
    MeSH term(s) Wastewater ; Waste Disposal, Fluid ; Wetlands ; Nitrogen/analysis ; Oxygen ; Denitrification
    Chemical Substances Wastewater ; Nitrogen (N762921K75) ; Oxygen (S88TT14065)
    Language English
    Publishing date 2022-11-29
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-022-23936-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Cytotoxic

    Liu, Tao / Pan, Chen / Shi, Huatian / Huang, Tao / Huang, Yong-Liang / Deng, Yang-Yang / Ni, Wen-Xiu / Man, Wai-Lun

    Dalton transactions (Cambridge, England : 2003)

    2023  Volume 52, Issue 25, Page(s) 8540–8548

    Abstract: In chemotherapy, the search for ruthenium compounds as alternatives to platinum compounds is proposed because of their unique properties. However, the geometry effect of ruthenium complexes is sparely investigated. In this paper, we report the synthesis ... ...

    Abstract In chemotherapy, the search for ruthenium compounds as alternatives to platinum compounds is proposed because of their unique properties. However, the geometry effect of ruthenium complexes is sparely investigated. In this paper, we report the synthesis of a series of bis(acetylacetonato)ruthenium(III) complexes bearing two amidines (1-) in a
    MeSH term(s) Mice ; Animals ; Humans ; Ruthenium/pharmacology ; Antineoplastic Agents/pharmacology ; Cisplatin/pharmacology ; Cell Cycle Checkpoints ; Neoplasms ; Amidines ; Cell Line, Tumor ; Coordination Complexes/pharmacology ; Apoptosis
    Chemical Substances Ruthenium (7UI0TKC3U5) ; Antineoplastic Agents ; Cisplatin (Q20Q21Q62J) ; Amidines ; Coordination Complexes
    Language English
    Publishing date 2023-06-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/d3dt00328k
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Antibiotic removal and microbial response mechanism in constructed wetlands treating aquaculture wastewater containing veterinary drugs

    Deng, Yang-yang / Zou, Meng-yao / Liu, Wen / Lian, Ying-li / Guo, Qin-mei / Zhang, Xiao-meng / A, Dan

    Journal of Cleaner Production. 20232023 Mar. 31, Jan. 31, v. 394 p.136271-

    2023  

    Abstract: Aquaculture discharge is an important non-point source for antibiotic contamination, yet antibiotic removal from aquaculture wastewater has not been given the necessary attention. Here, nine constructed wetlands (CWs) with different configurations (i.e., ...

    Abstract Aquaculture discharge is an important non-point source for antibiotic contamination, yet antibiotic removal from aquaculture wastewater has not been given the necessary attention. Here, nine constructed wetlands (CWs) with different configurations (i.e., substrate, plants, and hydraulic retention time) were prepared by orthogonal test [L₉ (3³)], to treat aquaculture wastewater and specifically to evaluate the removal efficiency and mechanism of antibiotics. Consequently, the highest removal percentages of trimethoprim (89 ± 3%), sulfamethoxazole (61 ± 7%), sulfamonomethoxine (20 ± 8%), sulfamethazine (20 ± 9%), and sulfadiazine (12 ± 13%) were achieved via collocating optimal configuration of CWs. Based on the analysis of both the orthogonal test and correlation, microbial degradation was the major removal pathway of antibiotics, particularly anaerobic processes. Further, 16S rRNA sequencing analysis presented that some specific substrate, plants, and hydraulic retention time might promote antibiotic removal via changing dominant and functional microbes by deciding oxygen concentrations and redox conditions in CWs. In which, anaerobic bacteria (e.g., Lacihabitans and Ilumatobacter) were regarded as the key microorganisms in the genus level for removing antibiotics by CWs through redundancy analysis (RDA), while aerobic bacteria (e.g., Hydrogenophaga and Pseudomonas) were likely to significantly inhibit the anaerobic process of antibiotic degradation.
    Keywords Hydrogenophaga ; Pseudomonas ; antibiotics ; aquaculture ; biodegradation ; oxygen ; sulfadiazine ; sulfamethazine ; sulfamethoxazole ; sulfamonomethoxine ; trimethoprim ; wastewater ; Veterinary drug ; Artificial wetland ; Aquaculture sewage ; Antibiotic reduction ; Impact factor ; Microbial effect
    Language English
    Dates of publication 2023-0131
    Publishing place Elsevier Ltd
    Document type Article ; Online
    ISSN 0959-6526
    DOI 10.1016/j.jclepro.2023.136271
    Database NAL-Catalogue (AGRICOLA)

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  8. Article: Associations between coagulation factor XII, coagulation factor XI, and stability of venous thromboembolism: A case-control study.

    Meng, Yan / Li, You / Ye, Yan-Jun / Ma, Qiang / Zhang, Jun-Bo / Qin, Hao / Deng, Yang-Yang / Tian, Hong-Yan

    World journal of clinical cases

    2022  Volume 10, Issue 9, Page(s) 2700–2709

    Abstract: Background: Pulmonary embolism (PE) is a fatal clinical syndrome that is generally caused by an embolus from unstable deep venous thrombosis (DVT). However, clinical and biochemical factors that are related to the stability of DVT are not fully ... ...

    Abstract Background: Pulmonary embolism (PE) is a fatal clinical syndrome that is generally caused by an embolus from unstable deep venous thrombosis (DVT). However, clinical and biochemical factors that are related to the stability of DVT are not fully understood.
    Aim: To evaluate the relationships between plasma antigen levels of factor XII (FXII:Ag) and factor XI (FXI:Ag) with the stability of DVT.
    Methods: Patients with DVT and no PE, DVT and PE, and controls with no DVT or PE that matched for age, gender, and comorbidities were included in this study. FXII:Ag and FXI:Ag in peripheral venous blood were measured using enzyme-linked immunosorbent assays.
    Results: Using the 95
    Conclusion: Higher plasma FXI:Ag might be a marker for unstable DVT, which might be associated with PE in these patients.
    Language English
    Publishing date 2022-01-16
    Publishing country United States
    Document type Journal Article
    ISSN 2307-8960
    ISSN 2307-8960
    DOI 10.12998/wjcc.v10.i9.2700
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Removal efficiency, kinetic, and behavior of antibiotics from sewage treatment plant effluent in a hybrid constructed wetland and a layered biological filter.

    A, Dan / Chen, Chun-Xing / Zou, Meng-Yao / Deng, Yang-Yang / Zhang, Xiao-Meng / Du, Jian-Jun / Yang, Yang

    Journal of environmental management

    2021  Volume 288, Page(s) 112435

    Abstract: Sewage treatment plant (STP) is the major point source of antibiotic contamination, yet the advanced treatment of antibiotic polluted STP effluent has not been given necessary attention. This study is conducted to evaluate the removal efficiency, kinetic, ...

    Abstract Sewage treatment plant (STP) is the major point source of antibiotic contamination, yet the advanced treatment of antibiotic polluted STP effluent has not been given necessary attention. This study is conducted to evaluate the removal efficiency, kinetic, and behavior of sulfonamides, quinolones, tetracyclines, and macrolides antibiotics from STP effluent in a hybrid constructed wetland (HCW) and a layered biological filter (LBF) at different hydraulic loading rates (HLRs). The results showed that the removal efficiency of antibiotics in all the HLRs was ranked as follow: quinolones of HCW (70-95%) > macrolides of HCW (58-77%) > tetracyclines of both systems (59-67%) > quinolones of LBF (28-64%) > macrolides of LBF (13-25%) > sulfonamides of both systems (<0%). The optimal HLR is 1.0 m/day for quinolones and 2.0 m/day for tetracyclines-macrolides in the HCW, and 6.4 m/day for quinolones-tetracyclines in the LBF, respectively. Although HCW performed better on the removal of most antibiotics, LBF exhibited stronger total loading toleration and higher removal loading ability to antibiotics. Among them, quinolones were markedly removed by multiple effect of substrate adsorption, microbial anaerobic degradation, and photolysis in the HCW (planted), and by filter sorption and interception in the LBF (unplanted); adsorption is the dominant elimination approach for tetracyclines in both systems; plant uptake plays a significant role on the removal of macrolides in the HCW.
    MeSH term(s) Adsorption ; Anti-Bacterial Agents ; Sewage ; Tetracyclines ; Waste Disposal, Fluid ; Waste Water/analysis ; Wetlands
    Chemical Substances Anti-Bacterial Agents ; Sewage ; Tetracyclines ; Waste Water
    Language English
    Publishing date 2021-04-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 184882-3
    ISSN 1095-8630 ; 0301-4797
    ISSN (online) 1095-8630
    ISSN 0301-4797
    DOI 10.1016/j.jenvman.2021.112435
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: [Mechanisms of total flavones of Epimedium on oxidative stress induced by myocardial ischemia/reperfusion injury in rats].

    Zhang, Wei-Ping / Deng, Yang-Yang / Ren, Jian-Xun / Li, Jing-Jin / Chen, Tao / Gao, Shan-Shan

    Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica

    2016  Volume 41, Issue 18, Page(s) 3400–3405

    Abstract: To investigate the effects and mechanisms of total flavones of Epimedium (TFE) on oxidative stress induced by myocardial ischemia/reperfusion injury in rats, forty male SD rats were randomly divided into sham operated group, model group, diltiazem group ... ...

    Abstract To investigate the effects and mechanisms of total flavones of Epimedium (TFE) on oxidative stress induced by myocardial ischemia/reperfusion injury in rats, forty male SD rats were randomly divided into sham operated group, model group, diltiazem group and flavonoids of Epimedium low and high doses groups with 8 rats in each. Myocardial ischemia/reperfusion injury model was induced by ligaturing the left anterior descending artery for 30 min followed reperfusion for 4 h after TFE was taken by intragastric administration for 4 days. The degree of myocardial infarct was observed by N-BT staining. The concentrations of MDA and activities of SOD and T-AOC in cardiac tissue were measured by colorimetry. Serum TnI concentrations were checked by ELISA. HE stain was used to observe myocardium structure under light microscope. Expressions of SIRT1 and Nrf2 in cardiac tissue were evaluated by immunohistochemistry method and Western blot, respectively. Compared with the model group, the degree of myocardial infarct, MDA concentration in cardiac tissue and the levels of TnI in serum significantly decreased in the diltiazem group and flavonoids of Epimedium low and high doses groups (P<0.05 or P<0.01); flavonoids of Epimedium low and high doses groups and the diltiazem group also showed improvements in myocardium structure under ischemia/reperfusion injury. TFE significantly increased the activity of SOD and T-AOC and the expression of SIRT1 and Nrf2 in cardiac tissue when compared with the model group (P<0.05 or P<0.01). Therefore, TFE can increase anti-peroxidant capacity of myocardium tissue by using intrinsically anti-oxidant signaling pathway of SIRT1 and Nrf2, which can inhibit irreversible damage of cardiomyocytes in myocardial ischemia/reperfusion injury and protect normal function of cardiac tissue.
    Language Chinese
    Publishing date 2016-09
    Publishing country China
    Document type English Abstract ; Journal Article
    ZDB-ID 1004649-5
    ISSN 1001-5302 ; 0254-0029
    ISSN 1001-5302 ; 0254-0029
    DOI 10.4268/cjcmm20161814
    Database MEDical Literature Analysis and Retrieval System OnLINE

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