Monica Radu

Monica Radu
Geological Institute of Romania | IGR · GEOECOLAB

PhD

About

88
Publications
26,101
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267
Citations
Additional affiliations
December 2020 - January 2021
Geological Institute of Romania
Position
  • Head of Department

Publications

Publications (88)
Research
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Dear Colleagues, Water is a very precious resource in many parts of the world. Research into effective, economical, and fit-forpurpose technologies that support the characterization, treatment, and beneficial use of water are imperative to effective water management systems. This Special Issue aims to present research articles and review papers pro...
Article
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Mining activities often generate important amounts of extractive waste, and, as a consequence, environmental impacts that affect all factors to a greater or lesser extent. Depending on a variety of variables, the impact can be permanent or temporary, reversible or irreversible, negative or positive. This study conducted research on the status of cl...
Preprint
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Mining activities often generate important amounts of extractive waste, and as a consequence, environmental impacts that affects all factors to a greater or lesser extent. Depending on a variety of variables, the impact can be permanent or temporary, reversible or irreversible, negative or positive. This study conducted research on the status of cl...
Article
Full-text available
Citation: Radu, V.-M.; Ivanov, A.-A.; Vîjdea, A.-M.; Alexe, V.-E.; Dincȃ, G.; Filiut ,ȃ , A.-E.; Cetean, V.-M. Assessment of Current Blue Energy Technologies and Their Potential Applications on Romanian Water Resources. Water 2023, 15, 2063. Abstract: This study offers a comprehensive analysis of unconventional renewable and sustainable energy prod...
Article
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Several EU initiatives focused on renewable energy, sustainable infrastructure and green transport require a sustainable supply of a wide range of raw materials. The increase in the population and, implicitly, the increasing demand for necessary resources led to accelerated degradation of the environment, a pressing issue which the contemporary wor...
Chapter
One of the renewable resources of strategic energy, currently untapped, can be obtained through capturing energy from the natural tendency to cancel the salinity gradients between salt water and fresh water, the so-called “Blue Energy”. From this point of view, Romania presents a potential and untapped major energy resource based on the salinity gr...
Article
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In the context of the sustainable development, the problem of the widespread use of renewable energy resources, which are clean and inexhaustible, is becoming more acute. In this regard, it is necessary to develop some capture installations that use renewable energy sources as efficiently as possible and with low impact on the environment. This pap...
Conference Paper
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Following the growing trend of packaging waste quantities, it has become more and more actual the issue of the impact of this waste flow over environment and human health, as a consequence of inappropriate disposal methods and technologies. For this purpose, waste hierarchy must be applied, focusing on waste prevention, prepare for reuse, recycling...
Article
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Nutrient pollution, a growing problem for most European river basins, is a priority challenge in the Danube River Basin, a river that interconnects freshwater with the marine environment. The nutrient content of the Lower Danube waters in a river area where hydro-technical works to improve navigation conditions were carried out, respectively betwee...
Conference Paper
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Given the international and cross-border nature of the Danube River, this study investigated the spatio-temporal variations and distribution of potentially toxic elements (PTEs) in Lower Danube River between Calarasi and Braila (km 375-km 175) as a case study. Approximately 1500 samples were taken and processed from 10 monitoring sites by intensive...
Article
Full-text available
The growing concern for most European rivers is due to pollution with potentially toxic elements (PTEs) and is of course a priority challenge for the Danube, a river that interconnects fresh water with the marine environment. The accumulation of PTEs from the Lower Danube River sediments and the potential negative effects of these chemicals on the...
Article
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At global level, anthropic activities have led to the emergence in the environment of different toxic substances, which tend to accumulate within the food chain, thus presenting risks to human health. As a result, the assessment of potentially toxic elements, particularly heavy metals, in fish is highly important from the point of view of human hea...
Article
Full-text available
The growing concern for most European rivers is due to pollution with potentially toxic elements (PTEs) and is of course a priority challenge for the Danube, a river that interconnects fresh water with the marine environment. The accumulation of PTEs from the Lower Danube River sediments and the potential negative effects of these chemicals on the...
Article
Full-text available
Water is an important receptor of environmental problems generated by anthropogenic activities, the water quality being affected by their magnitude and impact as well as by climate change. Given the international and cross-border nature of the Danube River and being aware that the pollution risk assessment is one of the key elements of the ecology...
Article
Full-text available
Taking into consideration that fish are valuable bioindicators for assessing pollution with potentially toxic elements (PTEs) such as heavy metals from aquatic environments, this study aimed to assess bioaccumulation factors in relation to water (BAF) and sediment (BASF) for the following potential toxic elements: Cd, Pb, Hg, Cu, Cr, Ni and Zn from...
Article
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River ecosystems are exposed to various stressors, surface sediments as a constitutive part thereof are an essential feature for the evaluation of aquatic ecosystems status. This paper aims to assess the surface sediment quality in the lower section of the Danube River, in terms of hazardous substances content (As, Cd, Cr, Cu, Pb, Hg, Zn, Ni, PAH a...
Article
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The aim of this paper is the evaluation of the trophic status of three lakes riparian to the Colentina River, namely Mogosoaia, Herastrau, Pantelimon, as Part III of an extended study on evaluation of the freshwater resources quality in Bucharest and surrounding areas [1, 2], supplementing the general quality assessment based on indices and indexes...
Article
The aim of this paper is the evaluation of the trophic status of three lakes riparian to the Colentina River, namely Mogosoaia, Herastrau, Pantelimon, as Part III of an extended study on evaluation of the freshwater resources quality in Bucharest and surrounding areas [1, 2], supplementing the general quality assessment based on indices and indexes...
Article
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The water quality assessment of Arges River and its tributary Dambovita River is presented in this paper as second part of an extended study on the evaluation of some freshwater resources quality located in Bucharest and surrounding areas [1]. This case study was carried out mainly for the water in the confluence area of Arges and Dambovita rivers,...
Article
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The quality assessment of the aquatic environment from some freshwater resources situated in Bucharest and Ilfov County-Romania has been performed in an extended study and data obtained will be presented in several papers. This first paper presents a case study on water quality assessment of the Mogosoaia, Herastrau and Pantelimon Lakes, lakes buil...
Article
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Framework Directive (2000/60/EC) (WFD) sets out a series of legal measures at European level against surface waters chemical pollution. The EU-list, annex of the WFD, contains those substances that present a significant risk to human health via aquatic environment, known as priority substances. In the last ten years, the Danube water quality has im...
Article
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Worldwide, reducing energy consumption and increasing energy efficiency are the main objectives of an integrated approach to economic, energy and climate policy. The energy sector has vital importance for the economic and social development and improves the quality of life. Ensuring sufficient energy supply and broad access to energy services, part...
Article
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Increasing anthropogenic influences on the environment has caused negative changes in natural ecosystems and soil contamination with potentially toxic metals has become a worrying issue at global level, due to the negative impact on the environment and human health. For the purpose of assessing soil contamination in the riparian areas of the Lower...
Poster
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The concept of glass waste has been re-evaluated by the European Commission, thus, glass waste is considered a secondary raw material, according to EU Regulation 1179/2012. In 2014, 18.5 million tonnes of glass were generated at EU level, from which only 123.768 tonnes in Romania. The glass waste generation indicator shows that plastic packaging an...
Poster
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This research paper aims to assess the chemical status of the DRB waters located on Romania territory regarding heavy metals such as Pb, Cd, Ni, Cr, Cu, and Zn by analysing water and sediment samples from different areas (south-west and north-west of Romania).
Poster
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The ongoing project aims to create a national database on secondary reserves of mining waste materials, as mining residues are of interest due to their negative impact on the environment as evidenced by the formation of acid waters, pollution with heavy metals (Pb, Cu, Zn, Cd, Hg) and metalloids (As, Sb), mechanical instability phenomena, blocking...
Presentation
Full-text available
The present study focused its attention on understanding the fate and transport of nitrogen species in unsaturated soil overlying Bucharest, Cernica and Frumuşani considering also the influence of soil characteristics on these pollutants. The problem was approached at the laboratory scale employing soil columns experiments.
Article
Full-text available
The growing concern for most European rivers is due to pollution with potentially toxic elements (PTEs) and is of course a priority challenge for the Danube, a river that interconnects fresh water with the marine environment. The accumulation of PTEs from the Lower Danube River sediments and the potential negative effects of these chemicals on the...
Article
Full-text available
The quality of the aquatic environment was strongly influenced by the development of urbanization, industrialization and population growth, and therefore water pollution, mainly due to the presence of heavy metal, becoming a widespread concern. The objective of this work was to evaluate the possibility to remove heavy metals Cd, Zn, Cr and Ni from...
Article
Full-text available
Sediments quality assessment may give important information regarding the pollution status of a hydrographic basin, heavy metals present in sediments posing significant risks on aquatic environment, hence to human health. This paper describes the assessment of heavy metals concentration in the sediments of Lower Danube River between km 375 and km 1...
Article
Full-text available
This paper presents the numerical modeling results of the pollutant dispersion in the Danube riverbed, using experimental data recorded monthly on the Borcea - Bala - Old Danube sector, for a 2 years period. The water samples were collected from the left bank, center and right bank of the river, and the follwing indicators were analyzed: lead, nick...
Article
Full-text available
The water quality of Danube River is constantly monitored by developing water management, the aquatic ecosystem being affected permanently from the differentially distributed pollutants. The objective of this study was to assess the water quality of the Danube River on the Calarasi-Braila section, where works to improve navigation conditions took p...
Article
Full-text available
Accidental pollution in a hydrosystem can cause widespread damages on the environment and could endanger public health, therefore the objective of this work was to simulate and anticipate a situation of accidental pollution, in time and space. Experimental data of the analyzed area (Borcea-Bala-Old Danube), for a period of 2 years included samples...
Article
Full-text available
Sediments quality assessment may give important information regarding the pollution status of a hydrographic basin, metals present in sediments posing significant risks on aquatic environment, hence to human health. In this study was performed an assessment of metals concentration in the sediments of Lower Danube River through multivariate statisti...
Article
Full-text available
Annually, paper and paperboard manufacture generates significant volumes of wastewater with varied composition. The issue of solid substances constitutes a problem for the protection of the quality of water resources as they may cause a series of undesirable effects on aquatic ecosystems due to deposition and anaerobic fermentation processes. The r...
Article
Full-text available
Evaluation of the potential environmental risk of the presence of heavy metals in surface sediments collected from lakes situated in heavily urbanized areas has been performed. Five heavy metals (Cu, Cr, Cd, Pb and Ni) were determined in sediments of urban lakes called Plumbuita and Circului Lakes, from five sampling sections S1-S5, to assess the r...
Article
Full-text available
EcoIndex allow an integrated assessment of chemical pressures on ecosystems, observing spatial and temporal evolution of these pressures and the correlation of biotic and abiotic factors. This study aims to present an integrated assessment of the metals (Cd, Cr, Cu, Pb, Zn, Ni) content in Lower Danube River water and sediment, using EcoIndex for wa...
Article
Full-text available
This study aims to assess the water quality of the Lower Danube River (km 375 - km 175), in sections where hydro-technical works took place for the improvement of navigation conditions. The samples were collected for 36 months from 2011 - 2014 and the quality indicators according to M.O. 161 of 2006: thermal conditions and acidification, oxygen reg...
Article
Full-text available
The multi-parametric quality index (ICPM) is a dimensionless number used to evaluate the overall water quality and it is a useful tool for policy makers and for the public. This study aims to introduce the ICPM algorithm. The ICPM was developed to assess the water quality of the Lower Danube River using information obtained from the analysis of 41...
Article
Full-text available
The contamination of aquatic ecosystems with a wide range of pollutants, especially with heavy metals cause direct toxic effects and has become a matter of general concern throughout the last decades. The aim of this study was to determine the concentrations of heavy metals (Pb, Cd, Cr, Cu, and Ni) in the water, sediments, and fish (Alburnus alburn...
Article
Full-text available
The presence of estrogens in the environment and their effects especially on reproductive health on aquatic animals and on humans has become a subject of growing concern worldwide. This paper describes the preliminary data and tests performed in order to obtain and optimize a new gas chromatographic method for the identification of the most common...
Poster
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poster presented at the 11th International Conference ELSEDIMA „Environmental Legislation, Safety Engineering and Disaster Management”
Article
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Increasingly higher concentrations of heavy metals in aquatic environments pose a major risk to living organisms, as a result of their bioaccumulation and toxicity. For the assessment of the bioaccumulation and trophic transfer, samples of water, sediments, aquatic plants (Ceratophyllum demersum, Potamogeton crispus and Spirogyra algae), molluscs (...
Article
Full-text available
An essential feature for the evaluation of the status of aquatic ecosystems is represented by the sediment quality assessment, as a constitutive part thereof. Sediments reflect all the processes occurring in the hydrographic basin, acting at the same time as a potential source of water pollutants, especially heavy metals. This paper aims to assess...
Article
Full-text available
The presence of heavy metals in aquatic systems represents a threat on environment biodiversity and on human health, becoming a significant concern worldwide. This paper proposes the Lower Danube water quality assessment by using two metal indices, heavy metal pollution index and metal index. To evaluate these indexes, ten locations were selected i...
Article
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Water pollution represents one of the most significant environmental issues, as quality of water resources is continuously affected by various forms of pollution. The Danube River represents one of the largest sources of pollution of the Black Sea, entering the country with high load of pollutants, some of them exceeding the permissible limits. The...
Article
Full-text available
The purpose of this study is to evaluate the water quality in the lakes along Colentina River according to MO 161/2006. To achieve this goal, two sampling sections (entry and exit points) for each lake have been established, and the following indicators have been determined: pH, water temperature, dissolved oxygen, biochemical oxygen demand, chemic...
Article
Full-text available
Eutrophication of large river systems, as a result of the increasing content of nutrients, is one of the major issues in water quality facing the authorities in the European countries. It is closely related to the environment, incurring profound effects on biodiversity of aquatic ecosystems, yet not fully understood so far. The present study is bas...
Article
Full-text available
Water hyacinth (Eichornia crassipes) and water lettuce (Pistia stratiotes) were analysed in order to determine the ability to absorb contaminants from water. These plants have the ability to metabolise and absorb pollutants from various aquatic environments (in most cases showing very effective properties for reducing nutrients and metals), which c...
Article
Full-text available
Use of antibiotics in agriculture may cause serious problems, because their presence generates antibiotic resistant bacteria that can reach the human body through various ways-directly, by ingestion of food or indirectly, through environmental contamination. Because about 75% of the ingested antibiotics pass unaltered through the digestive tract, t...
Poster
poster presented at the 1st International Conference on Ecology and Protection of Marine and Freshwater Environments”, EcoProWater
Article
Full-text available
Hazardous substances are distributed in aquatic environments between water body and sediments, in particular cases, sediments being re-suspended in large amounts into the water body (high water flow). These substances can be of synthetic or non-synthetic nature, being characterized by relatively low water solubility and high capacity of chemisorpti...
Presentation
Full-text available
In EU states solving environmental problems is an important condition in promoting sustainable development. A first step in determining the future strategic priorities of environmental inventory is available at local level, identifying the needs of the sector and possible courses of action and intervention measures. The main aim in this paper is to...
Poster
Full-text available
Water represents the most important natural resource currently available, representing one of the key factors of civilization, rivers being a vital resources for life. The multi-parametric quality index (ICPM) is a dimensionless number used to evaluate the overall quality of the water, being a useful tool for policy makers and the public. The main...
Poster
Full-text available
Water resource management is put in difficulty not only from the point of view of the amount of these resources and especially of their quality, this being affected by the various forms of pollution. The quality of water resources is influenced to a large extent by accidental pollutions, which represents sudden deteriorations of physical nature, ch...
Poster
Full-text available
EcoIndex allows an integrated assessment of the chemical pressures on ecosystems, the observation of spatial and temporal evolutions of these pressures and the correlation of biotic and abiotic factors. The aim of this study was to present an integrated assessment of the metals content (Cd, Cr, Cu, Pb, Zn, Ni) in water and sediments, for the Lower...
Article
Full-text available
The increasing amount of relatively new industrial reagents used is of concern especially when the Ml environmental fate of these chemical compounds is insufficiently documented. For some of these new reagents, the lack of analysis methods creates difficulties in the water quality monitoring of the discharged effluents. This paper covers the develo...
Poster
Full-text available
Water hyacinth (Eichornia crassipes) and water lettuce (Pistia stratiotes) were analyzed to determine the ability to absorb contaminants from water . These plants have the ability to metabolize and absorb pollutants from various aquatic environments (in most cases showing very effective properties for reducing nutrients and metals),which could then...
Poster
Full-text available
Social profile analysis is a fundamental tool in development planning. Phenomena such as population growth, suburbanization, the high level of morbidity and social exclusion can cause serious problems for economic development, social welfare and quality of life. The development rhythm of modern society and the rate of exploitation of the resources...