Author
Mônica Maria Diniz Leão
Bio: Mônica Maria Diniz Leão is an academic researcher from Universidade Federal de Minas Gerais. The author has contributed to research in topics: Wastewater & Chemical oxygen demand. The author has an hindex of 14, co-authored 53 publications receiving 633 citations.
Papers
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TL;DR: Data gathered indicated that caffeine, paracetamol, atenolol, ibuprofen, cephalexin and bisphenol A occur in the μg L-1 range in streams near urban areas, and endocrine disruptors are frequently detected in surface waters, highest concentrations account for 17α-ethynylestradiol and 17β-estradio.
147 citations
TL;DR: In this article, the use of blast furnace dust (BFD) as a catalyst to degrade an azo dye (RR195) by photo-Fenton-like processes was investigated.
73 citations
TL;DR: The multistage treatment system presented promising results, achieving degradation of more than 99% of the amoxicillin, more than 98%" of the original chemical oxygen demand (COD), and 90% of initial toxicity, with the consumption of approximately 500 mg of ozone indicates that this system could prevent dangerous and biorecalcitrant antibiotics from entering water resources.
68 citations
TL;DR: The purpose of this research was to verify the existence of a spatial correlation between base station (BS) clusters and cases of deaths by neoplasia in the Belo Horizonte municipality, Minas Gerais state, Brazil, from 1996 to 2006 and to measure the human exposure levels to EMF where there is a major concentration of cellular telephone transmitter antennas.
51 citations
TL;DR: The high availability of solar power in Brazil would make the implementation of the AOP using natural solar radiation for the decontamination of effluents feasible, thereby contributing to clean production and biodiversity conservation.
Abstract: Several studies have reported the adverse effects of recalcitrant compounds and emerging contaminants present in industrial effluents, which are not degradable by ordinary biological treatment Many of these compounds are likely to accumulate in living organisms through the lipid layer At concentrations above the limits of biological tolerance, these compounds can be harmful to the ecosystem and may even reach humans through food chain biomagnification In this regard, advanced oxidation processes (AOPs) represent an effective alternative for the removal of the pollutants This study focused on the AOP involving the use of ultraviolet radiation in homogeneous and heterogeneous systems Based on the literature review, comparisons between natural and artificial light were established, approaching photoreactors constructive and operational characteristics We concluded that the high availability of solar power in Brazil would make the implementation of the AOP using natural solar radiation for the decontamination of effluents feasible, thereby contributing to clean production and biodiversity conservation This will serve as an important tool for the enforcement of environmental responsibility among public and private institutions
47 citations
Cited by
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TL;DR: An overview of the findings from recent studies, which have applied AOPs to degrade pharmaceutical compounds, and a discussion that links various factors of TiO2-mediated photocatalytic treatment to its effectiveness in degrading pharmaceutical residues are included.
781 citations
TL;DR: In this review paper, a variety of AOPs, such as Fenton or Fenton-like reaction, oz onation or catalytic ozonation, photocatalytic oxidation, electrochemical oxidation, and ionizing radiation were briefly introduced, including their principles, characteristics, main influencing factors and applications.
669 citations
TL;DR: In this paper, the authors present a comprehensive and fundamental assessment of the photocatalytic activity for the removal of organic dyes and phenolic compounds from textile wastewater, which has been widely studied and is being commercialized in many developing countries in the world.
Abstract: Treatment of textile wastewater using titanium dioxide (TiO2) photocatalysis has been started from the last decade and reached attention to the researchers because of its versatile application. The variety of applications of TiO2 as a photocatalyst has been taken place because of low operating temperature, biologically inert nature, low energy consumption, water insolubility, ease availability and photoactivity, less toxicity, high chemical stability, suitable flat band potential, narrow band gap and environmentally benign. The successful and efficient application of photocatalysis depends on quality of photocatalyst, nature of pollutants, and source of light, which should be in close contact with each other. The TiO2 photocatalyst is used for the effluent treatment of textile wastewater in the presence of ultraviolet (UV) irradiation. Heterogeneous UV-TiO2 photocatalysis is capable to remove organic pollutants from textile wastewater, which has been widely studied and the technology also being commercialized in many developing countries in the world. This review focuses on the mechanism of UV-TiO2 photocatalysis, modification of TiO2 photocatalyst, and application of doping and co-doping in order to improve the photocatalytic activity in wastewater treatment. In addition, the review conveys comprehensive and fundamental assessments of the photocatalytic activity for the removal of organic dyes and phenolic compounds from textile wastewater.
490 citations
TL;DR: This review systematically summarizes the behavior and removal of different antibiotics in various biological treatment systems with discussion on their removal efficiency, removal mechanisms, critical bioreactor operating conditions affecting antibiotics removal, and recent innovative advancements.
Abstract: Antibiotics, the most frequently prescribed drugs of modern medicine, are extensively used for both human and veterinary applications. Antibiotics from different wastewater sources (e.g., municipal, hospitals, animal production, and pharmaceutical industries) ultimately are discharged into wastewater treatment plants. Sorption and biodegradation are the two major removal pathways of antibiotics during biological wastewater treatment processes. This review provides the fundamental insights into sorption mechanisms and biodegradation pathways of different classes of antibiotics with diverse physical-chemical attributes. Important factors affecting sorption and biodegradation behavior of antibiotics are also highlighted. Furthermore, this review also sheds light on the critical role of extracellular polymeric substances on antibiotics adsorption and their removal in engineered biological wastewater treatment systems. Despite major advancements, engineered biological wastewater treatment systems are only moderately effective (48-77%) in the removal of antibiotics. In this review, we systematically summarize the behavior and removal of different antibiotics in various biological treatment systems with discussion on their removal efficiency, removal mechanisms, critical bioreactor operating conditions affecting antibiotics removal, and recent innovative advancements. Besides, relevant background information including antibiotics classification, physical-chemical properties, and their occurrence in the environment from different sources is also briefly covered. This review aims to advance our understanding of the fate of various classes of antibiotics in engineered biological wastewater treatment systems and outlines future research directions.
454 citations
TL;DR: This review provides a critical evaluation of various published techniques for the activation of persulphate, suggests novel explanations for important observations in the field and advances proposals to explain reaction mechanisms more consistently.
435 citations