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1.
J Environ Manage ; 254: 109800, 2020 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-31739091

RESUMO

Treatment of highly polluted pharmaceutical effluents is a major challenge all over the world for technical and economic considerations. In this study, scientometric study is performed on the application of various methods for the treatment of pharmaceutical effluents to explore further developments. In this regard, a total of 1964 documents were retrieved from the Web of Science (WoS) database using a set of relevant keywords to cover all published documents. The extracted documents were subjected to scientometric study including the contributed authors, publications, citations received, contributing countries and institutions as well as the subject categories. From the data retrieved, the status of scientific knowledge on the subject history and current trends were identified and scientific gaps were critically discussed. Publications in this area started to appear since the sixties and were considerably promoted around the beginning of 2000s. Scientific publications of years 1960-2018 followed sigmoidal trend. It was found that leading countries are China and the United States in terms of scientific output on treatment technologies for pharmaceutical effluents. Among the active journals published, "Water Research" has received the most citations. A detailed discussion on the science and developments in this field is provided including the potential applications of scientometry.


Assuntos
Bibliometria , Preparações Farmacêuticas , China , Bases de Dados Factuais , Tecnologia , Estados Unidos
2.
J Environ Manage ; 247: 462-473, 2019 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-31254761

RESUMO

In the current global situation, the release of large amounts of potential effluents into the environment is considered as one of the most important and challenging issues. Innovations in the treatment methods to deal with this problem are among the research priorities within the scientific communities. Even though innumerable methods including physicochemical and biological have been used, yet no proper sustainability of the methods have been introduced. Membrane bioreactors (MBRs) have gained world-wide attention in recent years, but still there is no report in the literature to map the global research on this subject. The present manuscript describes a scientometric study on the global trend on the application of MBRs during the period 1991-2018 by employing variables such as: (1) distribution of documents over the adopted duration, (2) type of documents in this area, (3) rate of contribution among the different countries, (4) rate of cooperation among the authors, (5) frequency of the keywords co-occurring, (6) cited authors, (7) cited journals, (8) the frequency of categories appeared and (9) the cited documents. A total of 2452 bibliographic records from the Web of Science database were retrieved and analysed to generate results, thereby to create geospatial maps for a better understanding. The findings reveal an increase in the number of papers published in the world, especially China and USA being the top. The existing studies in MBRs research focus mainly on subject categories of the performance and fouling as the main criteria of the sustainable application of MBRs. This study therefore, provides an extensive understanding about the trends and research patterns of MBRs efforts worldwide.


Assuntos
Membranas Artificiais , Eliminação de Resíduos Líquidos , Reatores Biológicos , China , Indústrias
3.
Environ Int ; 125: 261-276, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30731376

RESUMO

Application of engineered nanomaterials for the treatment of industrial effluents and to deal with recalcitrant pollutants has been noticeably promoted in recent years. Laboratory, pilot and full-scale studies emphasize the potential of this technology to offer promising treatment options to meet the future needs for clean water resources and to comply with stringent environmental regulations. The technology is now in the stage of being transferred to the real applications. Therefore, the assessment of its performance according to sustainability criteria and their incorporation into the decision-making process is a key task to ensure that long term benefits are achieved from the nano-treatment technologies. In this study, the importance of sustainability criteria for the conventional and novel technologies for the treatment of industrial effluents was determined in a general approach assisted by a fuzzy-Delphi method. The criteria were categorized in technical, economic, environmental and social branches and the current situation of the nanotechnology regarding the criteria was critically discussed. The results indicate that the efficiency and safety are the most important parameters to make sustainable choices for the treatment of industrial effluents. Also, in addition to the need for scaling-up the nanotechnology in various stages, the study on their environmental footprint must continue in deeper scales under expected environmental conditions, in particular the synthesis of engineered nanomaterials and the development of reactors with the ability of recovery and reuse the nanomaterials. This paper will aid to select the most sustainable types of nanomaterials for the real applications and to guide the future studies in this field.


Assuntos
Recuperação e Remediação Ambiental/métodos , Nanotecnologia , Águas Residuárias , Purificação da Água/métodos , Poluentes Ambientais , Recuperação e Remediação Ambiental/normas , Indústrias , Nanoestruturas , Nanotecnologia/normas , Águas Residuárias/análise , Purificação da Água/normas
4.
Ecotoxicol Environ Saf ; 148: 813-824, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-29197796

RESUMO

Synthesis of the various types of engineered nanomaterials has gained a huge attention in recent years for various applications. Copper based nanomaterials are a branch of this category seem to be able to provide an efficient and cost-effective way for the treatment of the persistent effluents. The present work aimed to study the various parameters may involve in the overall performance of the copper based nanomaterials for environmental clean-up purposes. To this end, the related characteristics of copper based nanomaterials and their effects on the nanomaterials reactivity and the environmental and operating parameters have been critically reviewed. Toxicological study of the copper based nanomaterials has been also considered as a factor with high importance for the selection of a typical nanomaterial with optimum performance and minimum environmental and health subsequent effects.


Assuntos
Cobre/química , Descontaminação/métodos , Recuperação e Remediação Ambiental/métodos , Nanoestruturas/química , Cobre/toxicidade , Humanos , Nanoestruturas/toxicidade , Propriedades de Superfície
5.
Ecotoxicol Environ Saf ; 114: 326-42, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24953005

RESUMO

Economic benefits of the pulp and paper industry have led it to be one of the most important industrial sections in the world. Nevertheless, in recent years, pulp and paper mills are facing challenges with the energy efficiency mechanisms and management of the resulting pollutants, considering the environmental feedbacks and ongoing legal requirements. This study reviews and discusses the recent developments of affordable methods dealing with pulp and paper mill wastewaters. To this end, the current state of the various processes used for pulp and paper production from virgin or recovered fibers has been briefly reviewed. Also, the relevant contaminants have been investigated, considering the used raw materials and applied techniques as the subject for further discussion about the relevant suitable wastewater treatment methods. The results of the present study indicated that adopting the integrated methods, alongside a combination of biological (e.g., anaerobic digestion) and physicochemical (e.g., novel Fenton reactions) treatment methods, can be environmentally and economically preferable to minimize environmental contaminants and energy recycling.


Assuntos
Resíduos Industriais , Papel , Eliminação de Resíduos Líquidos/métodos , Águas Residuárias , Indústrias
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