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Yang S, Yang J, Zhang X, Tang J, Li J, Zhang A. Degradation of refractory organic matter in MBR effluent from treating landfill leachate by UV/PMS and UV/H 2O 2: a comparative study. ENVIRONMENTAL TECHNOLOGY 2024; 45:1313-1325. [PMID: 36322432 DOI: 10.1080/09593330.2022.2143285] [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: 05/26/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
This study applied ultraviolet/peroxymonosulfate (UV/PMS) and UV/hydrogen peroxide (UV/H2O2) processes to the advanced treatment of membrane bioreactor (MBR) effluent. The degradation efficiency of refractory organic matter and the reaction mechanisms of the two processes were systematically investigated. The results showed that the degradation efficiency of the UV/PMS processes was significantly lower than that of the UV/H2O2 process when the PMS concentration was significantly lower than the H2O2 concentration, e.g. the UV254 removals under optimal conditions were 72.92% and 82.21%, respectively. Additionally, the UV/PMS process could operate over a broader pH range. The degradation efficiency of the UV/PMS process was slightly increased by HCO3- and Cl- due to the activation of PMS, while in the UV/H2O2 process, HCO3- and Cl- depressed the degradation efficiency by competing with organic matter to react with reactive oxygen species (ROS). After the two processes, the aromaticity, humification, condensation degree, and molecular weight of refractory organic matter in the MBR effluent were considerably decreased. Fulvic- (HA) and humic-like substances (FA) were greatly degraded by the two processes. The UV/PMS had a superior degradation efficiency for macromolecular HA in the early stage of the reaction, and the UV/H2O2 could degrade HA to protein-like substances in the latter stage of the reaction. These differences between the two processes could be attributed to the dominance of different ROS, with SO4•- and HO• dominating in the UV/PMS, and HO• dominating in the UV/H2O2. The results of this study provide theoretical support for the application of MBR effluent treatment.Highlights Comparison on the MBR effluent treatment of UV/PMS and UV/H2O2 is studied.UV/PMS process can better destroy humic-like substances in the early reaction stage.Humic-like substances are transformed into protein-like compounds in UV/H2O2 process.UV/PMS and UV/PMS performs differently due to their different dominant ROS.
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Affiliation(s)
- Siping Yang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, People's Republic of China
| | - Jing Yang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, People's Republic of China
| | - Xiaoqin Zhang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, People's Republic of China
| | - Jia Tang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, People's Republic of China
| | - Jinlan Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, People's Republic of China
| | - Aiping Zhang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, People's Republic of China
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Ni F, Li Z, Huang J. Worldwide productivity and research trend on fruit quality: a bibliometric study. FRONTIERS IN PLANT SCIENCE 2024; 14:1294989. [PMID: 38264033 PMCID: PMC10803653 DOI: 10.3389/fpls.2023.1294989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 12/18/2023] [Indexed: 01/25/2024]
Abstract
Introduction As one of the important sources of food for human beings, fruits have been extensively studied. To better guide basic and applied research, it is urgent to conduct a systematic analysis of these studies based on extensive literature collection. Methods Based on the Web of Science Core Collection database, this study uses R language and CiteSpace to conduct bibliometric analysis and data mining on the literatures related to fruit quality from January 2013 to June 2023. Results The results indicated that among various fruits, tomatoes have been most frequently studied with special interests in photosynthesis, fruit development, and molecular breeding. The research direction primarily focused on fruit resistance and storage characteristics. Among the indicators related to fruit quality, antioxidant activity has the highest co-occurrence with other indicators of fruit quality, especially with nutrients such as anthocyanins, phenolic substances, sugars, and fruit firmness. Discussion Currently, adaptation to stress and antioxidant activity are recognized as prominent research focal points in this field. Fruit morphology, particularly fruit size, irrigation methods, application of molecular technology, and infection prevention, represent potential areas of interests in future research on fruit quality.
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Affiliation(s)
- Fei Ni
- Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
- College of Agriculture and Forestry Ecology, Shaoyang University, Shaoyang, China
| | - Ziwei Li
- Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Jianzi Huang
- Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
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Li Z, Gao Y, Tian J, Song Q, Wang M, Lei J. Thirty years of research on photoacoustic imaging in the field of cancer: A scientometric analysis of hotspots, bursts, and research trends. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:99399-99411. [PMID: 37610544 DOI: 10.1007/s11356-023-29243-9] [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: 04/17/2023] [Accepted: 08/04/2023] [Indexed: 08/24/2023]
Abstract
As a novel imaging modality based on photoacoustic effects, photoacoustic imaging (PAI) has shown great potential in biomedical applications, especially in the field of cancer. The purpose of our research was to identify collaborations between different institutions, authors, and countries, and to explore the hotspots and prospects of PAI research in the field of cancer. We downloaded publications on PAI research from the Science Citation Index-Expanded (SCI-E) of the Web of Science Core Collection database. Bibliometric analysis was performed using VOSviewer and CiteSpace software. A total of 2561 papers related to PAI research in the field of cancer were identified. A total of 10,105 authors participated in the PAI study, of which the majority (69.33%) authors participated in only 1 article. China (1638, 63.96%) was the country with the most articles in this field, and the Chinese Academy of Sciences (329, 12.85%) was the most productive institution. ACS Applied Materials & Interfaces (146, 5.70%) was the most productive journal and ACS Nano (7262 co-citations) was the most co-cited journal. Current hot topics of PAI research in the cancer field were the construction and development of multifunctional photoacoustic nanoprobes to achieve the integration of tumor detection and treatment. The application of photoacoustic imaging in the field of cancer is in the vigorous development stage and has a bright prospect. There was a wealth of cooperation between authors, countries, and institutions. Our findings can provide information about the future direction of funding agencies and research groups.
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Affiliation(s)
- Zhifan Li
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Ya Gao
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Jinhui Tian
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Qihua Song
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Mingyuan Wang
- Department of Ultrasonography, The First Hospital of Lanzhou University, Lanzhou, China
| | - Junqiang Lei
- The First Clinical Medical College of Lanzhou University, Lanzhou, China.
- Department of Radiology, The First Hospital of Lanzhou University, No.1 Donggang West Road, Chengguan Distract, Lanzhou, 730000, Gansu Province, China.
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Wang C, Kong D, Song H, Liu J, Qi M, Li L. Characterization of Global Research Trends and Prospects on Moyamoya Disease: Bibliometric Analysis. World Neurosurg 2023; 173:e329-e340. [PMID: 36796629 DOI: 10.1016/j.wneu.2023.02.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/16/2023]
Abstract
BACKGROUND Moyamoya disease (MMD) is a rare cerebrovascular disease in neurology. This study investigates the literature related to MMD from its discovery to the present and identifies research levels, achievements, and trends. METHODS All publications on MMD from its discovery to present were downloaded from the Web of Science Core Collection on September 15, 2022 and bibliometric analyses were visualized by HistCite Pro, VOSviewer, Scimago Graphica, CiteSpace, and R language. RESULTS There were 3414 articles in 680 journals by 10,522 authors in 2441 institutions and 74 countries/regions worldwise are included in the analyses. Since the discovery of MMD, output of publications has shown an upward trend. Japan, the United States, China, and South Korea are 4 major countries in MMD. The United States has the strongest cooperation with other countries. China's Capital Medical University is the output-leading institution worldwide, followed by Seoul National University and Tohoku University. The 3 authors with the most published articles are Kiyohiro Houkin, Dong Zhang, and Satoshi Kuroda. World Neurosurgery, Neurosurgery, and Stroke are the most recognized journals for researchers. Hemorrhagic moyamoya disease, susceptibility gene, and arterial spin are the primary focus areas of MMD research. "Rnf213,""vascular disorder," and "progress" are the top keywords. CONCLUSIONS We analyzed publications of global scientific research on MMD systematically by bibliometric methods. This study can provide one of the most comprehensive and accurate analyses for MMD scholars worldwide.
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Affiliation(s)
- Cong Wang
- Postgraduate Training Base at Shanghai Gongli Hospital, Ningxia Medical University, Shanghai, P. R. China
| | - Dewei Kong
- Postgraduate Training Base at Shanghai Gongli Hospital, Ningxia Medical University, Shanghai, P. R. China
| | - Huiling Song
- The Second People's Hospital of Nantong, Nantong, Jiangsu Province, P. R. China
| | - Jiajia Liu
- School of Medicine, Shanghai University, Shanghai, P. R. China
| | - Manman Qi
- School of Medicine, Shanghai University, Shanghai, P. R. China
| | - Longxuan Li
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
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Anjali K, Remesan R. Exploring the last 50 years of Indian research on the impact of coal mining using bibliometric analysis with an overview of water-related impacts. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:16449-16463. [PMID: 36190632 DOI: 10.1007/s11356-022-23381-2] [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: 02/04/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
This paper throws light on the bibliometric review of the impact of coal mining in India over the past 50 years, emphasizing environmental, especially water-related impacts. The data were refined from the Web of Science database and analyzed in a bibliometric map visualization software tool, VOSviewer, to grasp the research focus, status quo and analyze the trend and direction of the work being carried out in this area. The methodology was covered in three phases: search and document selection, software and data extraction, and analysis of results and trends. The study results indicated that (i) the publication has increased in the past two decades (2001-2021) with a steep increase in the period from 2010 to 2021 with 74.68% article types documents and a mere 7.74% review documents. (ii) In India, the significant contribution is made by the Indian Institute of Technology (Indian School of Mines), Dhanbad with Department of Science and Technology as a primary funding agency. (iii) The bibliometric map of co-occurrence of author keywords showed that keywords relating to the "pollution" (connected to air, water) from "Jharia coalfield" have highest occurrences in the relevant published works of literature and topics like "reclamation," "mine spoil," and application of approaches like "remote sensing and GIS" have lower linkage strengths in general. (iv) The result of the co-citation network study has marked the most significant authors and the highly cited sources of the database revealing Ghose M.K. and Singh A.K. as among the most cited authors with citations more than 150 in the field of our interest. (v) The trend of publication in the research area of Water Resources showed a significant increase after 2015. The keyword occurrence map reveals that water quality studies have been extensively studied, but quantifications of the coal mining-induced changes in water regimes at river basin scales are absent.
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Affiliation(s)
- Kumari Anjali
- School of Water Resources, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Renji Remesan
- School of Water Resources, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
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Lu L, Ni R. Bibliometric analysis of global research on polycyclic aromatic hydrocarbons and health risk between 2002 and 2021. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:84034-84048. [PMID: 36241831 DOI: 10.1007/s11356-022-23047-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Abstract
During the last 20 years, the association between polycyclic aromatic hydrocarbons (PAHs) and health risk has become one of the hotspots in the fields of public health and the environment. A bibliometric study of 1392 research articles retrieved from the Web of Science Core Collection (WoSCC) published between 2002 and 2021 was performed to give an in-depth statistical evaluation of research progress and future trends on PAHs and health risk (PHR). According to the findings, the annual output of significant scientific papers increased exponentially. China ranked first among the 86 nations in terms of the number of publications (NP), followed by the USA and India. Logistic regression analysis showed that there was a positive relationship between the second tertile of 180-day usage count (AOR = 1.62; 95% CI: 1.16-2.26) and increased odds of open access publishing after adjustment for the confounders, indicating that open access papers on PHR were more preferred over the preceding 6 months than non-open access articles. The most popular terms were "PAHs," "risk assessment," and "source identification." According to the bibliometric study, the research hotspots that require more exploration include identifying PAH sources in media such as soil, water, dust, and food and evaluating their linkages to health hazards using appropriate risk models. Understanding the environmental behavior, bioavailability, and health concerns of PAHs and their derivatives in various media is critical for environmental and public health protection. This paper provides an overview of current research status and future perspectives for PHR research.
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Affiliation(s)
- Lingyi Lu
- Xuhui District Center for Disease Control and Prevention, No. 50 Yongchuan Road, Shanghai, 200237, China
| | - Rong Ni
- Xuhui District Center for Disease Control and Prevention, No. 50 Yongchuan Road, Shanghai, 200237, China.
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Zhang W, Xia CL, Ma JN, Li JX, Chen Q, Ou SJ, Yang Y, Qi Y, Xu CP. Effects of mitochondrial dysfunction on bone metabolism and related diseases: a scientometric study from 2003 to 2022. BMC Musculoskelet Disord 2022; 23:1016. [DOI: 10.1186/s12891-022-05911-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 10/25/2022] [Indexed: 11/28/2022] Open
Abstract
Abstract
Background
In recent years, mitochondrial dysfunction has been extensively studied and published, but research on the effects of mitochondrial dysfunction on bone metabolism and related diseases is only just beginning. Furthermore, no studies have been carried out to systematically illustrate this area from a scientometric point of view. The goal of this research is to review existing knowledge and identify new trends and possible hotspots in this area.
Methods
All publications related to the relationship between mitochondrial dysfunction and bone metabolism and related diseases from 2003 to 2022 were searched at the Web of Science Core Collection (WoSCC) on May 7, 2022. Four different analytical tools: VOSviewer 1.6.18, CiteSpace V 6.1, HistorCite (12.03.07), and Excel 2021 were used for the scientometric research.
Results
The final analysis included 555 valid records in total. Journal of Biological Chemistry (Co-citations = 916) is the most famous journal in this field. China (Percentage = 37%), the United States (Percentage = 24%), and Korea (Percentage = 12%) are the most productive countries. Blanco FJ and Choi EM are the main researchers with significant academic influence. Current research hotspots are basic research on mitochondrial dysfunction and the prevention or treatment of bone metabolism-related diseases.
Conclusion
The study of the consequences of mitochondrial dysfunction on bone metabolism and associated diseases is advancing rapidly. Several prominent researchers have published extensive literature and are widely cited. Future research in this area will focus on oxidative stress, aging, gene expression, and the pathogenesis of bone metabolism-related diseases.
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Wang J, Li S. Applications of rare earth elements in cancer: Evidence mapping and scientometric analysis. Front Med (Lausanne) 2022; 9:946100. [PMID: 36035401 PMCID: PMC9399464 DOI: 10.3389/fmed.2022.946100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 07/15/2022] [Indexed: 11/13/2022] Open
Abstract
Cancer is one of the most important public health issues worldwide. Radiation therapy (XRT), chemotherapy, and targeted therapy are some of the main types of cancer therapy. Metals are used extensively in cancer diagnosis and therapy, and rare earth elements occupy an important niche in these areas. In recent years, an increasing number of studies have focused on the application of lanthanides in cancer diagnosis and therapy. However, no research has analyzed the current status and future trends of lanthanides in treating cancer. We downloaded data from publications from the Web of Science Core Collection. We used VOSviewer 1.16.16 software and Excel 2016 to analyze literature information, including publication years, journals, countries, institutes, authors, keywords, and co-cited references. A total of 7,849 publications were identified. The first study on the association of rare earth elements with cancer was published in 1945. However, before 1979, the number of publications per year was no more than 10. After 1980, the number of yearly publications increased. The United States was the most productive country (2,726, 34.73%), and the institution with the most frequent contributions was the Chinese Academy of Sciences (211, 2.69%). We observed close collaboration between countries and between institutes. The 7,839 publications were published in 1,579 journals, and Radiology was both the most productive journal (183, 2.33%) and cited journal (5,863 citations). A total of 33,987 authors investigated rare earth elements and cancer. Only 0.45% of the authors published more than 10 publications, and 79.07% of the authors published only one publication. Of the top 10 high-yield authors, seven were from developed countries and three were from China. However, among the top 10 co-cited authors, there was only one high-yield author. The main research topics in the application of lanthanide complex-doped nanomaterials in the diagnosis and treatment of cancer include magnetic resonance imaging contrast agents, photodynamic therapy, anticancer drug delivery, the efficacy and safety of yttrium-90 radioimmunotherapy and chemoembolization for the treatment of HCC, gadolinium magnetic resonance imaging (MRI) contrast agent for cancer diagnosis, and cerium oxide nanoparticles. In recent years, especially since 2016, the research frontiers are emerging in cerium oxide nanoparticles and photodynamic therapy. Studies related to the application of rare earth elements and cancer have significantly increased over the past 20 years. The United States contributed the most articles in the field, followed by China and Germany, and cooperation among countries was frequent. The Chinese Academy of Sciencess, Northwestern University, and Stanford University were the three most productive institutions, and cooperation among institutions was frequent. Many high-quality journals have published relevant research, but there are few highly productive journals.
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Affiliation(s)
- Jinyu Wang
- School of Basic Medical Science, Lanzhou University, Lanzhou, China
- *Correspondence: Jinyu Wang,
| | - Sheng Li
- The First People’s Hospital of Lanzhou City, Lanzhou, China
- Sheng Li,
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Yuan J, Li Q, Zhao Y. The research trend on arsenic pollution in freshwater: a bibliometric review. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:602. [PMID: 35864315 DOI: 10.1007/s10661-022-10188-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 03/12/2022] [Indexed: 06/15/2023]
Abstract
We conducted a quantitative and qualitative bibliometric analysis based on 8740 research articles from the Web of Science Core Collection published in the last 20 years (2000-2020) for a better understanding of the research progress and development trend of arsenic pollution in freshwater (FAP). The results showed a significant increase in the number of publications from 2007 to 2020, especially after 2015. Four of the top 10 productive authors are from China. Two of the top three research institutions are from China, and the publications of Chinese Academy of Sciences accounted for 5.40% of the total. China is also the center of the national cooperation network, indicating a greater influence of China in this scientific research field. The top three journals included Science of the Total Environmental, Environmental Science Technology, and Journal of Hazardous Materials. Besides arsenic, the high-frequency keywords in this field included adsorption, contamination, groundwater, removal, detection, and geochemistry. The researchers mainly focused on the groundwater environment, as well as the pollution hazards of arsenic in water bodies, remediation techniques, detection, migration, and transformation. Studies should pay more attention to the application and development of phytoremediation technology in the field of FAP in the future.
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Affiliation(s)
- Jie Yuan
- Wuhan Library, Chinese Academy of Sciences, Wuhan, 430074, People's Republic of China
- Hubei Key Laboratory of Big Data in Science and Technology, Wuhan, 430074, People's Republic of China
| | - Qianxi Li
- Hubei Provincial Academy of Eco-Environmental Sciences, Wuhan, 430074, People's Republic of China
| | - Yanqiang Zhao
- Wuhan Library, Chinese Academy of Sciences, Wuhan, 430074, People's Republic of China.
- Hubei Key Laboratory of Big Data in Science and Technology, Wuhan, 430074, People's Republic of China.
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Mulya KS, Zhou J, Phuang ZX, Laner D, Woon KS. A systematic review of life cycle assessment of solid waste management: Methodological trends and prospects. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 831:154903. [PMID: 35367543 DOI: 10.1016/j.scitotenv.2022.154903] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 03/14/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
Solid waste disposal has led to increasing concerns over resource, health, and environmental problems. These issues have been investigated using the Life Cycle Assessment (LCA) technique which helps identify the roots of varying hazards and allows decision-makers to improve the environmental performance of waste management practices. However, there is a lack of review studies that conducted meta-analysis related to developments in critical methodological steps of LCA on solid waste management. To fill this gap, this review paper examines 15 elements comprising the preference of journals, 13 LCA method-related characteristics, and economic assessment. Insights on the limitations and current practices of LCA applications, along with trends for future research, are provided. 240 studies on the LCA of SWM from 2009 until 2020 were systematically reviewed and classified into two major year-groups (i.e., 2009-2014 and 2015-2020) to investigate the trend changes. Among the studied elements, it is found that energy-related applications are on the increase in LCA studies on solid waste management. Anaerobic digestion facilities nearly double in appearance in the second year-group (2015-2020). There is also a more frequent occurrence of certain characterization methods like ReCiPe and CML. Functional units become more diverse, but are overall mostly defined on a mass basis. A frequently identified issue of many LCAs on solid waste management is the ambiguity of data sources such as out-of-date literature or inconsistent geographical references. By addressing issues of methodological standardization, this review study provides a basis to further increase the reliability of results of future LCA studies on solid waste management.
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Affiliation(s)
- Kyle Sebastian Mulya
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, Malaysia
| | - Jinqin Zhou
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, Malaysia
| | - Zhen Xin Phuang
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, Malaysia
| | - David Laner
- Research Center for Resource Management and Solid Waste Engineering, Faculty of Civil and Environmental Engineering, University of Kassel, Mönchebergstraße 7, 34125 Kassel, Germany
| | - Kok Sin Woon
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, Malaysia.
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Ali NIM, Aiyub K, Lam KC, Abas A. A bibliometric review on the inter-connection between climate change and rice farming. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:30892-30907. [PMID: 35092590 DOI: 10.1007/s11356-022-18880-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 01/21/2022] [Indexed: 06/14/2023]
Abstract
Rice is an important cereal and a staple food in many countries in the world. Climate change is a significant challenge that affects paddy production and threatens food security. However, research and development in this area continue to work to ensure the supply of rice fulfils the demands of the population. The study aims to analyse the transformation of international research power in trends in climate change that threaten food security (rice) worldwide. This study evaluates existing publications, especially research works from the period 1970 to 2020. The Web of Science database and the VOSviewer software were used together to generate a systematic analysis. A total of 1181 publications on climate change and paddy production were identified, written by 2249 authors from 56 countries. The highest number of publications was from China with 240 publications with 4609 citations, followed by India, with 225 publications and 2070 citations. Yield and adaptation are the most frequently used keywords that reflect this field's current significant research direction. Besides that, developing countries have received greater attention from researchers to focus on science, agriculture, climatology, and agriculture engineering as their domains. Therefore, socio-economic aspects should also be highlighted to raise awareness of the dangers of climate change and improve the farmers' economy by increasing paddy production. Attention was given by all countries globally, especially by researchers and stakeholders who need to plan holistic policies and strategies to encourage sustainable rice production and at the same time reduce the impact of climate change worldwide.
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Affiliation(s)
- Nurul Izzati Mohd Ali
- Environment Management Program, Center for Research in Development, Social and Environment, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
| | - Kadaruddin Aiyub
- Geography Program, Center for Research in Development, Social and Environment, Universiti Kebangsaan, 43600, Bangi, Selangor, Malaysia
| | - Kuok Choy Lam
- Geography Program, Center for Research in Development, Social and Environment, Universiti Kebangsaan, 43600, Bangi, Selangor, Malaysia
| | - Azlan Abas
- Environment Management Program, Center for Research in Development, Social and Environment, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
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Xiao P, Wu D, Wang J. Bibliometric analysis of global research on white rot fungi biotechnology for environmental application. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:1491-1507. [PMID: 34355311 PMCID: PMC8341834 DOI: 10.1007/s11356-021-15787-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 07/29/2021] [Indexed: 06/13/2023]
Abstract
In recent years, white rot fungi (WRFs) have received tremendous attention as a biotechnological tool for environmental pollution control. In order to systematically and comprehensively describe the progress, trends, and hotspots of WRF biotechnology in the field of environmental pollution control, the 3967 related publications from 2003 to 2020 were collected from Web of Science Core Collection database, and the bibliometric characteristics including publication output, country, institution, journal, author, citation frequency, h-index, and research focus were evaluated by using Excel 2007, CiteSpace V, and VOSviewer. The results indicated that the number of research publications increased rapidly before 2009, but after that, the number of publications fluctuated in a certain range. China and USA were the most productive countries and the most active country in international cooperation. In this field, most authors tend to cooperate within a small group. The journal and subject category with the largest number of publications are "International Biodeterioration & Biodegradation" and "Biotechnology Applied Microbiology", respectively. The analysis of high-frequency keywords revealed that "laccase", "biodegradation", "decolorization", and "Phanerochaete chrysosporium" were the most cited terms among all publications. The pretreatment of biomass waste, decolorization of dye wastewater, and bioremediation of polluted environment are the key research directions of WRF biotechnology. Finally, the frontier topics and active authors in this research field were identified using burst detection. We believe that this bibliometric study provides a comprehensive and systematic overview and promoted the future cooperative research and knowledge exchange in this field of WRF biotechnology for environmental applications.
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Affiliation(s)
- Pengfei Xiao
- College of Forestry, Northeast Forestry University, Hexing Road 26, Harbin, 150040, China.
| | - Dedong Wu
- College of Forestry, Northeast Forestry University, Hexing Road 26, Harbin, 150040, China
| | - Jianqiao Wang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
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13
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Reshadi MAM, Soleymani Hasani S, Nazaripour M, McKay G, Bazargan A. The evolving trends of landfill leachate treatment research over the past 45 years. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:66556-66574. [PMID: 34235684 DOI: 10.1007/s11356-021-14274-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 04/30/2021] [Indexed: 06/13/2023]
Abstract
Landfilling is one of the most prevalent waste management strategies on a global scale. However, one major drawback of landfills is the production of highly contaminated leachate which can harm ecosystems and pollute water resources which municipalities depend on. Various treatment options have been explored for treating leachate throughout the years. This paper aims to investigate landfill leachate treatment studies through bibliometric and visual analysis of articles collected from the Scopus database from 1975 to 2019. The results show that more than one thousand papers have been published in 159 journals. Nearly 3000 authors have published on the topic, most commonly from China, the USA, Malaysia, and Brazil. The keywords co-occurrence network led to the formation of 5 topical clusters, after which they were closely examined and titled "oxidation processes," "nitrogen removal processes," "constructed wetlands/coagulation," "adsorption," and "membrane-based processes" based on their contents. Finally, the overlay network was used to discern the hottest research trends. The results showed that advanced coagulation-based processes (such as peroxicoagulation) and studies focusing on improving membrane-based processes through reduction of membrane fouling are focal points which will be trending into the future.
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Affiliation(s)
| | | | - Morteza Nazaripour
- Department of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran
| | - Gordon McKay
- Division of Sustainable Development, College of Science and Engineering, Hamad Bin Khalifa University, Education City, Qatar Foundation, Doha, Qatar
| | - Alireza Bazargan
- School of Environment, College of Engineering, University of Tehran, Tehran, Iran.
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14
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Vijayaraghavan K, Biswal BK, Adam MG, Soh SH, Tsen-Tieng DL, Davis AP, Chew SH, Tan PY, Babovic V, Balasubramanian R. Bioretention systems for stormwater management: Recent advances and future prospects. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 292:112766. [PMID: 33984642 DOI: 10.1016/j.jenvman.2021.112766] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 04/05/2021] [Accepted: 05/04/2021] [Indexed: 06/12/2023]
Abstract
Bioretention is a popular stormwater management strategy that is often utilized in urban environments to combat water quality and hydrological impacts of stormwater. This goal is achieved by selective designing of a system, which consists of suitable vegetation at the top planted on an engineered media with drainage system and possible underdrain at the bottom. Bibliometric analysis on bioretention studies indicates that most of the original research contributions are derived from a few countries and selected research groups. Hence, most of the bioretention systems installed in diverse geographical locations are based on guidelines from climatically different countries, which often lead to operational failures. The current review critically analyzes recent research findings from the bioretention literature, provides the authors' perspectives on the current state of knowledge, highlights the key knowledge gaps in bioretention research, and points out future research directions to make further advances in the field. Specifically, the role and desired features of bioretention components, the importance of fundamental investigations in laboratory, field-based studies and modeling efforts, the real-time process control of bioretention cells, bioretention system design considerations, and life cycle assessment of full-scale bioretention systems are discussed. The importance of local conditions in guiding bioretention designs in difference climates is emphasized. At the end of the review, current technical challenges are identified and recommendations to overcome them are provided. This comprehensive review not only offers fundamental insights into bioretention technology, but also provides novel ideas to combat issues related to urban runoff and achieve sustainable stormwater management.
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Affiliation(s)
| | - Basanta Kumar Biswal
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore
| | - Max Gerrit Adam
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore
| | - Soon Hong Soh
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore
| | - Daryl Lee Tsen-Tieng
- Centre for Urban Greenery and Ecology, National Parks Board, 1 Cluny Road, 259563, Singapore
| | - Allen P Davis
- Department of Civil and Environmental Engineering, University of Maryland, College Park, MD, 20742, United States
| | - Soon Hoe Chew
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore
| | - Puay Yok Tan
- Department of Architecture, School of Design and Environment, National University of Singapore, Singapore
| | - Vladan Babovic
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore
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Lei P, Shrestha RK, Zhu B, Han S, Yang H, Tan S, Ni J, Xie D. A Bibliometric Analysis on Nonpoint Source Pollution: Current Status, Development, and Future. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18157723. [PMID: 34360018 PMCID: PMC8345492 DOI: 10.3390/ijerph18157723] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 11/21/2022]
Abstract
Nonpoint source pollution (NPS) has become the leading factor of global water quality problems, attracting great attention from governments and researchers in various countries. Based on this situation, understanding the current research status of NPS can help guide future research. However, most of the current reviews only describe the research status of some specific aspects but fail to quantify the research hotspots and development trends on the whole, which limits the overall understanding of NPS. In this paper, bibliometrics was used to study the current status, hotspots, and frontiers of NPS research during 1991–2015, and the future research development was predicted. Over the past 15 years, there has been a remarkable growth trend in publication output, and the participation of countries/territories has also increased. Journal of Environmental Quality, Journal of Hydrology, and Total Environmental Science were the top three journals. Sharpley AN and Arnold JG from the USA were the most productive authors with the best quality articles. The major author clusters and research regions are located in North America and Europe, followed by East Asia. The United States dominates this research field, with the largest number of independent and collaborative articles. Chinese authors gained more attention through international cooperation. Keyword analysis confirmed that water quality and nutrients were the main concerns of NPS pollution research, which mainly involved a number of research topics, such as pollutant emission reduction research and the evaluation and simulation of pollutants’ migration and their transformation under different situations, while pesticides were less of a concern, which suggests that the abuse of pesticides has come under control. Meanwhile, SWAT was the dominating model in the last decade partly because it satisfied the growing needs of watershed-scale management.
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Affiliation(s)
- Ping Lei
- College of Resources and Environment, Southwest University, Chongqing 400715, China; (P.L.); (R.K.S.); (H.Y.); (S.T.)
- School of Urban and Rural Planing and Constrution, Mianyang Teachers’ College, Mianyang 621000, China; (B.Z.); (S.H.)
| | - Ram Kumar Shrestha
- College of Resources and Environment, Southwest University, Chongqing 400715, China; (P.L.); (R.K.S.); (H.Y.); (S.T.)
- Lamjung Campus, Institute of Agriculture and Animal Science, Tribhuvan University, Kirtipur 33603, Nepal
| | - Bing Zhu
- School of Urban and Rural Planing and Constrution, Mianyang Teachers’ College, Mianyang 621000, China; (B.Z.); (S.H.)
| | - Suju Han
- School of Urban and Rural Planing and Constrution, Mianyang Teachers’ College, Mianyang 621000, China; (B.Z.); (S.H.)
| | - Hongbin Yang
- College of Resources and Environment, Southwest University, Chongqing 400715, China; (P.L.); (R.K.S.); (H.Y.); (S.T.)
| | - Shaojun Tan
- College of Resources and Environment, Southwest University, Chongqing 400715, China; (P.L.); (R.K.S.); (H.Y.); (S.T.)
| | - Jiupai Ni
- College of Resources and Environment, Southwest University, Chongqing 400715, China; (P.L.); (R.K.S.); (H.Y.); (S.T.)
- Correspondence: (J.N.); (D.X.)
| | - Deti Xie
- College of Resources and Environment, Southwest University, Chongqing 400715, China; (P.L.); (R.K.S.); (H.Y.); (S.T.)
- Correspondence: (J.N.); (D.X.)
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16
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Sabour MR, Derhamjani G, Akbari M, Hatami AM. Global trends and status in waste foundry sand management research during the years 1971-2020: a systematic analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:37312-37321. [PMID: 33713260 DOI: 10.1007/s11356-021-13251-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
Waste foundry sand (WFS) is the by-product of the foundry industry, which is produced about 0.6 tons per 1 ton of foundry industry production. While it cannot be recycled or reused, it will be disposed of in landfills. Today, with increasing attention to environmental issues, the reuse and recycle of materials because of limited resources have been considered. Due to the desirable properties of WFS, many studies have been done on the properties and performance of its use in various industries, especially in concrete technology. The purpose of this paper is to conduct a bibliometric analysis of foundry sand research during the years 1971-2020. Various aspects, such as document types, languages, major journals, key countries, authors, and keywords, have been examined. The collaborations among authors and countries were constructed, visualized, and evaluated through the application of the social network analysis method based on co-authorship relations. Also, keyword cluster analysis has been performed using co-occurrence relations to discover the most prominent issues related to WFS. The results showed that the number of publications (TP) has improved significantly in recent years, especially in 2018-2020. It has increased from 1 in 1971 to 38 in 2020. The engineering subdivision with 33% has had the highest number of papers. Also, India, China, and the USA have the highest number of publications, respectively. Statistical data from the author keyword study showed that in general, papers can be classified into three categories in terms of subject: first, characteristics of WFS and its importance; second, the use of WFS in concrete and the study of mechanical and physical properties as one of its applications; and the third, investigation on environmental effects and damage caused by disposal and landfill of WFS and efforts to find solutions for recycling and reuse. The keywords "Waste Foundry Sand," "Foundry Sand," and "Compressive Strength" with a growth rate of 2700%, 1900%, and 1100%, respectively, are important topics in the field of WFS research.
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Affiliation(s)
| | - Ghazaleh Derhamjani
- Civil Engineering Faculty, K. N. Toosi University of Technology, Tehran, Iran
| | - Mohammadamin Akbari
- Civil Engineering Faculty, K. N. Toosi University of Technology, Tehran, Iran
| | - Amir Mostafa Hatami
- Civil Engineering Faculty, K. N. Toosi University of Technology, Tehran, Iran
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17
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Shi J, Gao Y, Ming L, Yang K, Sun Y, Chen J, Shi S, Geng J, Li L, Wu J, Tian J. A bibliometric analysis of global research output on network meta-analysis. BMC Med Inform Decis Mak 2021; 21:144. [PMID: 33941172 PMCID: PMC8094555 DOI: 10.1186/s12911-021-01470-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Accepted: 03/10/2021] [Indexed: 12/21/2022] Open
Abstract
Background Network meta-analysis (NMA) has been widely used in the field of medicine and health, but the research topics and development trends are still unclear. This study aimed to identify the cooperation of countries and institutes and explore the hot topics and future prospects in the field of NMA. Methods Data of publications were downloaded from the Web of Science Core Collection. We used CiteSpace V, HistCite 2.1, and Excel 2016 to analyze literature information, including years, journals, countries, institutes, authors, keywords, and co-cited references. Results NMA research developed gradually before 2010 and rapidly in the following years. 2846 NMA studies were published in 771 journals in six languages. The PLoS One (110, 3.9%) was the most productive journal, and N Engl J Med (5904 co-citations) was the most co-cited journal. The most productive country was the United States (889, 31%) and the most productive institute was the University of Bristol (113, 4.0%). The active collaborations were observed between developed countries and between productive institutes. Of the top 10 authors, four were from the UK, and among the top 10 co-cited authors, six were from the UK. Randomized evidence, oral anti-diabetic drugs, coronary artery bypass, certolizumab pegol, non-valvular atrial fibrillation, and second-line antihyperglycemic therapy were the hot topics in this field. Conclusions NMA studies have significantly increased over the past decade, especially from 2015 to 2017. Compared with developing countries, developed countries have contributed more to these publications and have closer cooperation, indicating that cooperation between developed and developing countries should be further strengthened. The treatment of diabetes, cardiovascular diseases, and immune rheumatism are the main hot topics.
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Affiliation(s)
- Jiyuan Shi
- Evidence-Based Nursing Centre, School of Nursing, Lanzhou University, Lanzhou City, China
| | - Ya Gao
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou City, China
| | - Liu Ming
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou City, China
| | - Kelu Yang
- Evidence-Based Nursing Centre, School of Nursing, Lanzhou University, Lanzhou City, China
| | - Yue Sun
- School of Nursing, Peking University, Beijing City, China
| | - Ji Chen
- Mianyang hospital of traditional Chinese medicine, Mianyang City, China
| | - Shuzhen Shi
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou City, China
| | - Jie Geng
- Department of General Surgery, The Second Hospital of Lanzhou University, Lanzhou City, China
| | - Lun Li
- Second Xiangya Hospital, Central South University, Changsha City, China
| | - Jiarui Wu
- Department of Clinical Chinese Pharmacy, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing City, China
| | - Jinhui Tian
- Evidence-Based Nursing Centre, School of Nursing, Lanzhou University, Lanzhou City, China. .,Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou City, China. .,Key Laboratory of Evidence-Based Medicine and Knowledge Translation of Gansu Province, Lanzhou City, China.
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18
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Wasielewski R, Głód K, Lasek J. Industrial tests of co-combustion of alternative fuel with hard coal in a stoker boiler. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2021; 71:339-347. [PMID: 33074780 DOI: 10.1080/10962247.2020.1826007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 09/03/2020] [Accepted: 09/10/2020] [Indexed: 06/11/2023]
Abstract
This paper presents the results of industrial research on co-combustion of solid recovered fuel (SRF) with hard coal in a stoker boiler type WR-25. The share of SRF in the fuel mixture was 10%. During the co-combustion of SRF, no technological disturbances of the boiler were noted. The obtained SO2 and NOX emissions were comparable with coal combustion, but dust emissions increased. During the co-combustion of the coal mixture with 10% of alternative fuel, acceptable standards for co-incineration of waste were exceeded for NOx, dust, CO, HCl, HF, heavy metals, dioxins, and furans. The by-products of waste co-combustion with coal were non-hazardous waste. The obtained results constitute a very important contribution to the process of boiler retrofitting toward a waste co-incineration unit, and to meeting the legislative and environmental requirements.Implications: Due to some challenges related to waste storage and transportation, combustion in incineration plants and Waste-to-Energy plants is not possible. The adaptation (formal and technical) of medium scale boilers as co-incineration plants reveals high potential. Nevertheless, the lack of experience and investigations of waste co-combustion in real industrial scale grate boilers is observed. Thus, the implication of this article results consists of the investigations using industrial scale mechanical grate boiler (different from incineration type). Moreover, the investigations were carried out in a low-capacity boiler (~50% of nominal capacity). This novel experience is very important because reduced heat dissipation into the grid caused by high ambient temperatures occurs very frequently. These tests are valuable from the point of view of retrofitting the unit to obtain technological and emission parameters that would allow obtaining the status of a waste co-incinerating unit. The results of these investigations are addressed to power plant management board and engineering staff.
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Affiliation(s)
| | - Krzysztof Głód
- Institute for Chemical Processing of Coal, Zabrze, Poland
| | - Janusz Lasek
- Institute for Chemical Processing of Coal, Zabrze, Poland
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19
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Ho YS. Letter to the editor. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2021; 71:281-282. [PMID: 33216707 DOI: 10.1080/10962247.2020.1854017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- Yuh-Shan Ho
- Trend Research Centre, Asia University, Taichung County, Taiwan
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20
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Farzadkia M, Mahvi AH, Norouzian Baghani A, Sorooshian A, Delikhoon M, Sheikhi R, Ashournejad Q. Municipal solid waste recycling: Impacts on energy savings and air pollution. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION 2021; 71:737-753. [PMID: 33507848 DOI: 10.1080/10962247.2021.1883770] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
In recent years, recycling of municipal solid waste (MSW) has been recognized as one of the most efficient methods of waste management in terms of environmental benefits. This study investigates the energy savings and other environmental benefits of recycling of dry MSW collected in Shiraz, Iran (2018). The impact of different recycling rates (current = 15%, desirable = 50%, ideal = 80%) on environmental benefits and energy savings were assessed. The annual quantity of recycled components were defined as glass (735 tons), plastic carrier bags (555 tons), cardboard (3,874 tons), paper (3,806 tons), disposable plastic containers (287 tons), other types of metals (785 tons), disposable metallic containers (aluminum) (171 tons), other types of plastics (812 tons) and polyethylene terephthalate (PET) (887 tons). The results confirmed that recycling of paper and glass in three different scenarios resulted in a reduction of 1.01, 2.14, and 3.43 million tons of air pollutant emissions, respectively. By improving the recycling rates from 15 to 80%, overall energy savings can improve by between a factor of 3.5 to 5.5. Also, a reduction of approximately 2-3.5% in air pollutant emissions can be achieved by upgrading the current recycling program (15% recycling rate) to favorable and ideal conditions.Implications: In recent years, recycling of municipal solid waste (MSW) has been recognized as one of the most efficient methods of waste management in terms of environmental benefits. This study investigates the energy savings and other environmental benefits of recycling of dry MSW collected in Shiraz, Iran (2018). According to available data, there has been little effort for recycling in developing countries, and waste landfilling is recognized as the most favorable option in MSW management. The aim of this study was to characterize MSW components in Shiraz, Iran, and to quantify the environmental benefits and energy savings as result of paper, glass, and aluminum recycling. This work is novel in that there are no reports to our knowledge of the environmental benefits and energy savings resulting from different recycling scenarios including current (15%), desirable (50%), and ideal (80%) recycling for aluminum, paper, and glass. The results of this work have broad implications both for other regions owing to the pervasiveness of recycling facilities and also for developing countries that can strive towards the infrastructure needed to reach improved recycling scenarios.
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Affiliation(s)
- Mahdi Farzadkia
- Department of Environmental Health Engineering, School of Public Health, Iran, University of Medical Sciences, Tehran, Iran
| | - Amir Hossein Mahvi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Abbas Norouzian Baghani
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Armin Sorooshian
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, Arizona, USA.,Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, Arizona, USA
| | - Mahdieh Delikhoon
- Department of Occupational Health Engineering, School of Public Health, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Razieh Sheikhi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
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21
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Chu X, He Z, Fan X, Zhang L, Wen H, Huang WC, Wang T. The influencing factors of Harbin (China) residents' satisfaction with municipal solid waste treatment. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2021; 39:83-92. [PMID: 32787673 DOI: 10.1177/0734242x20947158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
China is experiencing an enormous increase in municipal household solid waste (MHSW) generation and is facing multiple problems associated with the treatment of MHSW. This paper analyses factors affecting residents' satisfaction with MHSW treatment performance. Six factors were identified by the Delphi method: (a) pick-up frequency by waste collection vehicles, (b) fund supply situation, (c) charging standard for waste treatment, (d) waste bin arrangement, (e) laws and regulations, (f) publicity and education. We examine the significance of these six influencing factors, estimating binary logistic regression models. Data for this study are derived from the survey responses of 469 households in Harbin, one of the largest cities in northeast China. The results indicate that 'pick-up frequency by waste collection vehicles' is ranked the first and most important determinant of Harbin residents' satisfaction with MHSW treatment; this is closely followed by 'publicity and education'. The third and fourth significant influencing factors, respectively, are 'fund supply situation' and 'charging standard for waste treatment'. The last two factors are 'laws and regulations' and 'waste bin arrangement'. By understanding the influence of various factors on residents' satisfaction, this study aims to help in designing an effective waste management system to reduce the cost of MHSW management, and to raise the residents' satisfaction with municipal solid waste treatment. Based on the research findings, we advocate that establishing a reasonable waste transport (pick-up) system as well as strengthening publicity and education of waste management are key to improving residents' satisfaction with the MHSW treatment performance.
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Affiliation(s)
- Xu Chu
- The Economy and Management School, Harbin Engineering University, China
| | - Zhiyong He
- The Economy and Management School, Harbin Engineering University, China
| | - Xiuhua Fan
- The Economy and Management School, Harbin Engineering University, China
| | - Ling Zhang
- The Economy and Management School, Harbin Engineering University, China
| | - Hong Wen
- School of Public Management, South China University of Technology, China
| | | | - Tao Wang
- Institute for Advanced Study, Tongji University, China
- UNEP-Tongji Institute of Environment for Sustainable Development, Tongji University, China
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22
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Wang Y, Liu Q, Chen Y, Qian Y, Pan B, Ge L, Wang Q, Ding G, Wang J. Global Trends and Future Prospects of Child Nutrition: A Bibliometric Analysis of Highly Cited Papers. Front Pediatr 2021; 9:633525. [PMID: 34568235 PMCID: PMC8459025 DOI: 10.3389/fped.2021.633525] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 08/16/2021] [Indexed: 12/13/2022] Open
Abstract
Child nutrition has always been a global concern. This study performed visual analysis of 1,398 child nutrition highly cited papers (HCPs) from 2009 to 2019. The purpose of the study was to evaluate and present the performances of authors, journals, countries, institutions, top cited papers; to explore the hot topics, prospects, and to propose the future research directions on child nutrition. We used bibliometric methods to conduct in-depth statistical analysis of HCPs on child nutrition, showing research progress, trends and hot spots. We included HCPs on child nutrition from the Science Citation Index-Expanded (SCI-E) database February 7, 2020. Two tools, CiteSpace and VOSviewer, were used to conduct the bibliometric analyses. The results showed that, since 2011, the number of HCPs on child nutrition has increased rapidly. The top three contributors in this field were the USA, the UK and Canada. However, the contribution of developing countries was very limited. Intestinal microflora, food allergy, overweight and obesity were the three major research hotspots in this field. Results of this study provide valuable references for ongoing child nutrition related research, which may be interesting and noteworthy to the researchers involved.
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Affiliation(s)
- Yunhua Wang
- School of Management, Lanzhou University, Lanzhou, China.,Gansu Provincial Hospital, Lanzhou, China
| | | | - Yongcong Chen
- Department of Social Medicine and Health Management, School of Public Health, Lanzhou University, Lanzhou, China
| | - Yaling Qian
- Department of Social Medicine and Health Management, School of Public Health, Lanzhou University, Lanzhou, China
| | - Bei Pan
- Gansu Provincial Hospital, Lanzhou, China
| | - Long Ge
- Department of Social Medicine and Health Management, School of Public Health, Lanzhou University, Lanzhou, China.,Evidence Based Social Science Research Center, School of Public Health, Lanzhou University, Lanzhou, China
| | - Qi Wang
- Department of Social Medicine and Health Management, School of Public Health, Lanzhou University, Lanzhou, China.,Evidence Based Social Science Research Center, School of Public Health, Lanzhou University, Lanzhou, China
| | - Guowu Ding
- Department of Social Medicine and Health Management, School of Public Health, Lanzhou University, Lanzhou, China
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23
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Process Modelling and Simulation of Waste Gasification-Based Flexible Polygeneration Facilities for Power, Heat and Biofuels Production. ENERGIES 2020. [DOI: 10.3390/en13164264] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
There is increasing interest in the harnessing of energy from waste owing to the increase in global waste generation and inadequate currently implemented waste disposal practices, such as composting, landfilling or dumping. The purpose of this study is to provide a modelling and simulation framework to analyze the technical potential of treating municipal solid waste (MSW) and refuse-derived fuel (RDF) for the polygeneration of biofuels along with district heating (DH) and power. A flexible waste gasification polygeneration facility is proposed in this study. Two types of waste—MSW and RDF—are used as feedstock for the polygeneration process. Three different gasifiers—the entrained flow gasifier (EFG), circulating fluidized bed gasifier (CFBG) and dual fluidized bed gasifier (DFBG)—are compared. The polygeneration process is designed to produce DH, power and biofuels (methane, methanol/dimethyl ether, gasoline or diesel and ammonia). Aspen Plus is used for the modelling and simulation of the polygeneration processes. Four cases with different combinations of DH, power and biofuels are assessed. The EFG shows higher energy efficiency when the polygeneration process provides DH alongside power and biofuels, whereas the DFBG and CFBG show higher efficiency when only power and biofuels are produced. RDF waste shows higher efficiency as feedstock than MSW in polygeneration process.
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Ke L, Lu C, Shen R, Lu T, Ma B, Hua Y. Knowledge Mapping of Drug-Induced Liver Injury: A Scientometric Investigation (2010-2019). Front Pharmacol 2020; 11:842. [PMID: 32581801 PMCID: PMC7291871 DOI: 10.3389/fphar.2020.00842] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 05/22/2020] [Indexed: 12/12/2022] Open
Abstract
Background Drug-induced liver injury (DILI) is a common adverse event, which compromises the safety of numerous drugs, poses a significant risk to patient health, and enhances healthcare expenditures. Many articles have been recently published on DILI related research, though no relevant scientometric study has been published yet. This scientometric study was aimed at comprehensively analyzing the knowledge base and emerging topics on DILI. Methods The articles and reviews related to DILI, published from 2010 to 2019 in the Web of Science Core Collection (WoSCC), were retrieved on March 15, 2020, using relevant keywords. Four different scientometric software (HistCite, VOSviewer, CiteSpace, and R-bibliometrix) was used to conduct this scientometric study. Results A total of 1,995 publications were retrieved (including 1,550 articles and 445 reviews) from 592 academic journals with 56,273 co-cited references in 10 languages by 2,331 institutions from 79 countries/regions. The majority of publications (n = 727, 36.44%) were published in the United States, and the University of North Carolina contributed the most publications (n = 89, 4.46%). The most productive academic journal on DILI was the Toxicological Sciences [n = 79, 3.96%; impact factor (IF) 2018 = 3.564], and Hepatology was the first co-cited journal (n = 7,383, IF 2018 = 14.971). Fontana RJ and Teschke R may have significant influence on DILI research, with more publications (n = 46; n = 39) and co-citations (n = 382; n = 945). Definition, incidence rate or clinical characteristics, etiology or pathogenesis (such as the character of the innate immune system, the regulation of cell-death pathways, and susceptible HLA-B*5701 genotype), identification of main drugs and causality assessment (criteria and methods) were the knowledge base for DILI research. Exploring the microscopic mechanism (such as the organelle dysfunction and cytotoxicity induced by drugs, and exploration of role of neutrophils in DILI using mouse models) and developed newer approaches to prevent DILI (such as the prospective HLA-B*5701 screening and in vitro approaches for assessing the potential risk of candidate drugs for DILI) were the recent major topics for DILI research. Conclusion This scientometric study comprehensively reviewed the publications related to DILI during the past decade using quantitative and qualitative methods. This information would provide references for scholars, researching on DILI.
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Affiliation(s)
- Lixin Ke
- Department of Liver Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Cuncun Lu
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Rui Shen
- Department of Liver Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Tingting Lu
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Bin Ma
- Key Laboratory of Preclinical Study for New Drug of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou, China
| | - Yunpeng Hua
- Department of Liver Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Shi S, Gao Y, Sun Y, Liu M, Shao L, Zhang J, Tian J. The top-100 cited articles on biomarkers in the depression field: a bibliometric analysis. PSYCHOL HEALTH MED 2020; 26:533-542. [DOI: 10.1080/13548506.2020.1752924] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Shuzhen Shi
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou City, China
- Key Laboratory of Evidence-based Medicine and Knowledge Translation of Gansu Province, Lanzhou, China
| | - Ya Gao
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou City, China
- Key Laboratory of Evidence-based Medicine and Knowledge Translation of Gansu Province, Lanzhou, China
| | - Yue Sun
- Evidence-Based Nursery Center, School of Nursing, Lanzhou University, Lanzhou City, China
| | - Ming Liu
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou City, China
- Key Laboratory of Evidence-based Medicine and Knowledge Translation of Gansu Province, Lanzhou, China
| | - Lihua Shao
- The First Clinical Medical College of Lanzhou University
| | - Junhua Zhang
- Evidence-Based Medicine Center, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jinhui Tian
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou City, China
- Key Laboratory of Evidence-based Medicine and Knowledge Translation of Gansu Province, Lanzhou, China
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Gao Y, Ge L, Shi S, Sun Y, Liu M, Wang B, Shang Y, Wu J, Tian J. Global trends and future prospects of e-waste research: a bibliometric analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:17809-17820. [PMID: 31037528 DOI: 10.1007/s11356-019-05071-8] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 04/02/2019] [Indexed: 06/09/2023]
Abstract
Electronic waste (e-waste) has been widely studied by scholars all over the world, but the research topics and development trends in this field are still unclear. This study aimed to explore the status quo, hot topics, and future prospects in the field of e-waste. Data of publications were downloaded from the Web of Science Core Collection. We used CiteSpace V, Histcite, and VOSviewer to analyze literature information. A total of 2800 papers in e-waste research were identified, and the number of publications increased rapidly after 2004. Six thousand five hundred seventy-three authors participated in the e-waste research, but 70.01% of the authors published only 1 article. The most productive country in this field was China (1146 publications), and the most productive institution was the Chinese Academy of Sciences (370 publications). The Waste Management (225 publications) was the most productive journal, and Environment Science & Technology (9704 co-citations) was the most co-cited journal. The main hot topics in e-waste field were management and recycling of e-waste in developing countries, health risk assessment after exposure to organic pollutants, degradation and recovery of waste metal materials, and impact of heavy metals on children's health. The frontier topic was degradation.
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Affiliation(s)
- Ya Gao
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, No.199, Donggang West Road, Lanzhou City, 730000, Gansu Province, China
- Key Laboratory of Evidence-Based Medicine and Knowledge Translation of Gansu Province, Lanzhou, 730000, China
| | - Long Ge
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, No.199, Donggang West Road, Lanzhou City, 730000, Gansu Province, China
- Key Laboratory of Evidence-Based Medicine and Knowledge Translation of Gansu Province, Lanzhou, 730000, China
- School of Public Health, Lanzhou University, Lanzhou, 730000, China
| | - Shuzhen Shi
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, No.199, Donggang West Road, Lanzhou City, 730000, Gansu Province, China
- Key Laboratory of Evidence-Based Medicine and Knowledge Translation of Gansu Province, Lanzhou, 730000, China
| | - Yue Sun
- Evidence-Based Nursery Center, School of Nursing, Lanzhou University, Lanzhou, 730000, China
| | - Ming Liu
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, No.199, Donggang West Road, Lanzhou City, 730000, Gansu Province, China
- Key Laboratory of Evidence-Based Medicine and Knowledge Translation of Gansu Province, Lanzhou, 730000, China
| | - Bo Wang
- Department of Nursing, Rehabilitation Center Hospital of Gansu Province, Lanzhou, 730000, China
| | - Yi Shang
- Lanzhou University Second Hospital, Lanzhou, 730030, China
| | - Jiarui Wu
- Department of Clinical Chinese Pharmacy, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Jinhui Tian
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, No.199, Donggang West Road, Lanzhou City, 730000, Gansu Province, China.
- Key Laboratory of Evidence-Based Medicine and Knowledge Translation of Gansu Province, Lanzhou, 730000, China.
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Tavares R, Ramos A, Rouboa A. A theoretical study on municipal solid waste plasma gasification. WASTE MANAGEMENT (NEW YORK, N.Y.) 2019; 90:37-45. [PMID: 31088672 DOI: 10.1016/j.wasman.2019.03.051] [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: 06/19/2018] [Revised: 03/04/2019] [Accepted: 03/24/2019] [Indexed: 05/09/2023]
Abstract
Gasification is an innovative and effective process which reduces the amount of waste produced by society and affords a synthetic gas with diverse applicability. In this plasma gasification study at high temperatures, a previously developed Aspen Plus model was used for municipal solid waste (MSW). The study is focused on the behavior of the equivalence ratio (ER), steam to MSW (S/MSW) ratio and gasification temperature (T), as a function of three gasification agents (air, O2 and steam), assessing the final syngas composition. The model was validated with results from literature. The highest hydrogen yield reached 64% (molar fraction), when steam was used as gasification agent, lower values corresponding to O2 utilization. Instead, a CO-enriched syngas was achieved under O2 atmosphere (58%). Enhanced lower heating value (LHV) was obtained for the syngas produced when ER = 1, under oxygen atmosphere at 1500 °C (13 MJ/Nm3). This is due to the formation of CO, promoted by O2, which constitutes an important factor in enhancing syngas LHV. Tar presence in the gasification process normally implies significant complications, but in this study, no problems were noticed since gasification occurred at higher temperatures.
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Affiliation(s)
- Raquel Tavares
- LAETA/INEGI/UTAD, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - Ana Ramos
- LAETA/INEGI-FEUP, Faculty of Engineering of the University of Porto, Portugal
| | - Abel Rouboa
- LAETA/INEGI/UTAD, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal; LAETA/INEGI-FEUP, Faculty of Engineering of the University of Porto, Portugal; MEAM Department, University of Pennsylvania, Philadelphia, PA 19020, USA.
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Zyoud SH, Zyoud SH, Al-Jabi SW, Sweileh WM, Awang R. Contribution of Arab countries to pharmaceutical wastewater literature: a bibliometric and comparative analysis of research output. Ann Occup Environ Med 2016; 28:28. [PMID: 27382475 PMCID: PMC4932741 DOI: 10.1186/s40557-016-0117-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 06/27/2016] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Recently, the pharmaceutical manufacturing industry has been growing rapidly in many countries in the world, including in Arab countries. Pharmaceuticals reach aquatic environments and are prevalent at small concentrations in wastewater from the drug manufacturing industry and hospitals. Such presence also occurs in domestic wastewater and results from the disposal of unused and expired medicines. Therefore, the objective of this study was to analyze and compare the quantity and quality of publications made by researchers in Arab countries on pharmaceutical wastewater. METHODS To retrieve documents related to pharmaceutical wastewater, we used the Scopus database on November 21, 2015. All documents with terms related to pharmaceutical wastewater in the title or abstract were analysed. Results obtained from Arab countries were compared with those obtained from Turkey, Iran and Israel. RESULTS Globally, a total of 6360 publications were retrieved while those from Arab countries, Iran, Turkey and Israel, were 179, 113, 96 and 54 publications respectively. The highest share of publications belonged to Kingdom of Saudi Arabia (KSA) with a total of 47 (26.2 %) publications, followed by Egypt (38; 21.2 %), Tunisia (17; 9.5 %) and Morocco (16; 8.9 %). The total number of citations was 1635, with a mean of 9.13 and a median (inter quartile range) of 3 (1.0-10.0). The study identified 87 (48.6 %) documents with 32 countries of international collaboration with Arab countries. It was noted that Arab researchers collaborated mainly with authors in Western Europe (54; 30.2 %), followed by authors from the Asiatic region (29; 16.2 %) and Northern America (15; 8.4 %). The most productive institution was King Saud University, KSA (13; 7.3 %), followed by the National Research Centre, Egypt (10; 7.3 %). CONCLUSIONS This study showed that KSA has the largest share of productivity on pharmaceutical wastewater research. Bibliometric analysis demonstrated that research productivity, mainly from Arab countries in pharmaceutical wastewater research, was relatively lagging behind. More research effort is required for Arab countries to catch up with those of non-Arab Middle Easter countries on pharmaceutical wastewater research.
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Affiliation(s)
- Sa’ed H. Zyoud
- Poison Control and Drug Information Center (PCDIC), College of Medicine and Health Sciences, An-Najah National University, Nablus, 44839 Palestine
- Department of Clinical and Community Pharmacy, College of Medicine and Health Sciences, An-Najah National University, Nablus, 44839 Palestine
- WHO Collaborating Centre for Drug Information, National Poison Centre, Universiti Sains Malaysia (USM), Pulau Pinang, Penang 11800 Malaysia
| | - Shaher H. Zyoud
- Institute of Urban Water Management and Landscape Water Engineering, Technical University of Graz, Graz, Austria
| | - Samah W. Al-Jabi
- Department of Clinical and Community Pharmacy, College of Medicine and Health Sciences, An-Najah National University, Nablus, 44839 Palestine
| | - Waleed M. Sweileh
- Department of Pharmacology and Toxicology, College of Medicine and Health Sciences, An-Najah National University, Nablus, 44839 Palestine
| | - Rahmat Awang
- WHO Collaborating Centre for Drug Information, National Poison Centre, Universiti Sains Malaysia (USM), Pulau Pinang, Penang 11800 Malaysia
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