György Deak

Institutul Naţional de Cercetare-Dezvoltare pentru Protecţia Mediului / Universitatea Politehnica din Bucuresti

Bisphenol A and its analogues represent a significant environmental and public health hazard, particularly affecting the endocrine systems of children and newborns. Due to the growing need for non-pathogenic biodegradation microbial agents as environmentally friendly and cost-effective solutions to eliminate endocrine disruptors, this study aimed t...

Monitoring air quality in urban areas is essential due to increased pollution and health hazards. In this study, the air quality in the busiest area of Bucharest's central was assessed, and the main car-related pollutants, NO2 and PM10, have been examined in relation to the influence of meteorological parameters. During the measurement campaign, th...

High Particulate Events (HPE) contributes to the deterioration of air quality, as the fine particles present can be inhaled, leading to respiratory diseases and other health problem. Knowing the adverse effects of air pollution episodes to human health, it is crucial to create suitable models that can effectively and accurately predict air pollutio...

SARS-CoV-2 is a pathogenic strain of coronavirus which causes acute respiratory disease in humans. Community spread of COVID-19 was difficult to assess in the beginning of the pandemic, so new methods of detecting the virus had to be discovered. For this reason, national wastewater surveillance systems were implemented in order to detect the spread...

Ecosystem respiration (Reco) is the main contributor to carbon emissions from different types of aquatic ecosystems. For a better understanding of CO 2 emissions from the water-atmosphere interface of rivers and to evaluate the influence of meteorological factors and water quality parameters on Reco, in-situ measurements were carried out in Dambovi...

Titanate-based materials are attractive inorganic adsorbents for wastewater treatment but also could be used as high performances ceramics. In this study, platelets and wires like morphologies of sodium titanate were successfully synthesized via an unconventional sol-gel method, starting with titanium tetrachloride, TiCl4 and sodium hydroxide, NaOH...

In the context of the continuing decline of the species belonging to the order Acipenseriformes on a global level, the anadromous sturgeon species sturgeon species in the Lower Danube have been affected by a significant reduction in historical migration routes and fragmentation of breeding habitats. This paper presents the stages of the methodology...

Environmental pollution with microplastic waste is a pressing problem of high importance world-wide. This paper is aiming at testing, on an experimental basis, by using a synthetic wastewater, a combined technology to remove the microplastic waste from wastewaters. The method involves a preliminary fragmentation of microplastics followed by the aer...

Anadromous sturgeon populations in the Lower Danube are in severe decline, and this is due to a combination of anthropogenic and natural factors that have a major impact on the life cycle of the species. Stationary swimming parameters, namely water temperature and depth, represent the starting point for developing the best procedures to identify br...

Veterinary antibiotics have become a major concern due to potential environmental effects. This study presents an investigation of the exposure and environmental effects of the veterinary medicinal product in powder form, administered in the drinking water of piglets, chickens and turkeys, containing 250 mg/g penicillin G (benzylpenicillin potassiu...

Grasslands are, on a generally accepted approach, habitats dominated by graminoid plants, and represent the largest biome on Earth. Nevertheless, their definition is tautologically affected by the obvious statement of their composition, with regard to the dominance of species belonging to the Poaceae family, or, to a wider extent, sometimes also in...

Particulate matter (PM 10 ) is the key indicator of air quality index (API) during high particulate event (HPE). The presence of PM 10 is believed to have an adverse effect on human health and environment. Therefore, the prediction of future PM 10 concentration is very important because it can aid the local authorities to implement precautionary ac...

Globally, streams and rivers contain important stocks of carbon dioxide and release 1.8 ± 0.25 Pg of carbon each year. The literature review demonstrates that wetlands carbon sequestration capacity and effluxes are not homogenous. Considering those differences, it is crucial to comprehend how these effluxes vary depending on the characteristics of...

The LULUCF sector (land use, land use change and forestry) can act as a carbon dioxide (CO 2 ) sink, either by increasing the removal of greenhouse gasses from the atmosphere or by reducing their current emissions. This paper intends to analyze the results of the CO 2 monitoring methodology by the chamber method in order to estimate the effect of d...

On the basis of the in situ analysis of the sturgeon condition within the Lower Danube River, the aim was to carry out a research that would complement the results obtained from the monitoring and ultrasonic tagging methods. Thus, DNA samples were taken selectively from each ultrasonically tagged specimen in order to determine whether or not there...

Particulate Matter (PM 10 ) is one of the most significant contributors towards haze or high particulate event (HPE) that occurs in Malaysia. HPE can severely affect human health, environment and economic so it is important to create a reliable prediction model in predicting future PM 10 concentration especially during HPE. Therefore, the aim of th...

SARS-CoV-2 is a pathogenic coronavirus and has caused acute respiratory diseases worldwide. Over time, numerous research studies have proved the benefits of environmental surveillance through monitoring the wastewater. During the COVID-19 public health emergency, several countries have conducted studies to detect viral RNA from SARS-CoV-2 in wastew...

It is considered that most infections caused by pathogen agents in fish species raised in the closed medium like fishing farms originate from the natural environment, thus there are few information on virus transmission from species raised in aquaculture programs to the wild ones. This issue is important taking into account that the wild sturgeon p...

The Bystroe Channel project with transboundary environmental impact in the Danube Delta, area of great ecological significance that has already a strong anthropic footprint, requires close monitoring of water quality parameters in order to determine their tendencies and their impact on the ecosystem components. Riverbed bathymetry surveys using mul...

Sturgeon aquaculture is an important continuously developing sector within freshwater aquaculture and its sustainability is one of the most pressing matters nowadays. Thus, the urge to apprehend the mechanics of sturgeon growth in captivity as well as in nature is of immediate importance, considering the increase in customers’ requests for captive-...

Road traffic is one of the main causes of pollution in big cities due to a large number of vehicles and crowded intersections. Also, the lack of green spaces and the topography of the land can cause the accumulation of pollutants at the local level. Considering the increasing concern regarding the negative impact of air pollution on the health of t...

In recent years, plastic pollution has been brought more and more to the attention of scientists and the general public alike by the increasing number of studies regarding the insidious presence of microplastics in every aspect of human life and in the en

Citation: Burlacu, L.; Deak, G.; Boboc, M.; Raischi, M.; Holban, E.; Sadîca, I.; Jawdhari, A. Understanding the Ecosystem Carrying Capacity for Romanichthys valsanicola, a Critically Endangered Freshwater Fish Endemic to Romania, with Considerations upon Trophic Offer and Behavioral Density. Diversity 2023, 15, 748. https://doi. Abstract: The most...

Haze has become a seasonal phenomenon affecting Southeast Asia, including Malaysia, and has occurred almost every year within the last few decades. Air pollutants, specifically particulate matter, have drawn a lot of attention due to their adverse impact on human health. In this study, the spatial and temporal variability of the PM10 concentration...

STRATEGIA DE DEZVOLTARE DURABILĂ PENTRU CONSERVAREA STURIONILOR SĂLBATICI DIN DUNĂREA DE JOS ÎN CONTEXTUL SCHIMBĂRILOR CLIMATICE ȘI PACTULUI VERDE EUROPEAN György Deák*1,2) și Puiu-Lucian Georgescu1,3) 1) Consiliul Consultativ pentru Dezvoltare Durabilă al României 2) Institutul Național de Cercetare-Dezvoltare pentru Protecția Mediului 3) Infras...

Plastic debris is considered an emerging aquatic pollutant as an alarming number of reports are indicating the environmental contamination with such agents. Ichthyofauna has been subjected to increasing plastic pollution over the past years, which has led to detrimental effects in the food chain, and consequently to the general health of ecosystems...

Malaysia has been facing transboundary haze events repeatedly, in which the air contains extremely high particulate matter, particularly PM10, which affects human health and the environment. Therefore, it is crucial to understand the characteristics of PM10 concentration and develop a reliable PM10 forecasting model for early information and warnin...

In preparation for the Fourth Industrial Revolution (IR 4.0) in Malaysia, the government envisions a path to environmental sustainability and an improvement in air quality. Air quality measurements were initiated in different backgrounds including urban, suburban, industrial and rural to detect any significant changes in air quality parameters. Due...

Haze episode in Malaysia typically takes place during the dry monsoon season. As a result, high concentration of atmospheric particles was recorded primarily brought by transboundary air pollution from the neighbour country. Therefore, this study aims to evaluate and compare the level of particulate matter (PM 10) at urban-industrial areas during t...

Citation: Baidrulhisham, S.E.; Noor, N.M.; Hassan, Z.; Sandu, A.V.; Vizureanu, P.; Ul-Saufie, A.Z.; Zainol, M.R.R.M.A.; Kadir, A.A.; Deák, G.

Former mining sites cause serious environmental problems worldwide as they are contaminated with hazardous levels of metals. Mined lands are characterized by a deserted landscape due to the lack of organic matter in soil. Research analyses confirmed that the structure of soil in abandoned surface mines has affected the occurrence of ecological proc...

This research is a necessity given the importance of conserving and protecting aquatic ecosystems, as well as declining species, especially sturgeon species. Given that these species are considered vulnerable and critically endangered according to IUCN Red List rules and because there is currently insufficient data to prove their possible breeding...

Feature selection is considered as one of the essential steps in data pre-processing. However, all of the previous studies on predicting PM10 concentration in Malaysia have been limited to statistical method feature selection, and none of these studies used machine-learning approaches. Therefore, the objective of this research is to investigate the...

Particulate matter (PM10) is the main air pollutant during high particulate event (HPE) or also known as haze in Southeast Asia specifically in Malaysia. PM10 emanation is believed to cause the strongest harm to public health and environment during this time. Therefore, it is very important to develop good PM10 prediction model during these event t...

Ground-level ozone (O3) is one of the most significant forms of air pollution around the world due to its ability to cause adverse effects on human health and environment. Understanding the variation and association of O3 level with its precursors and weather parameters is important for developing precise forecasting models that are needed for miti...

Ground-level ozone (O3) is one of the most significant forms of air pollution around the world due to its ability to cause adverse effects on human health and environment. Understanding the variation and association of O3 level with its precursors and weather parameters is important for developing precise forecasting models that are needed for miti...

The aim of this research was to evaluate the results obtained by ultrasonic tagging of sturgeon species and to collect field data for the period 2019-2021. Thus, an analysis was made of the information collected from the beginning of the period and also will be presented the migration capacity of sturgeons in the area of hydrotechnical arrangements...

Ecosystem-based approaches to climate change mitigation involves the use of ecosystems carbon storage and sequestration services. For this purpose, comprehensive CO2 efflux (Reco) measurements of the wetland and terrestrial ecosystems were performed in the adjacent area of Bucharest, by applying two complementary methods using close chambers: dynam...

Many invasive plant species use interactions with their anthropic environment as a propagation factor and benefit from climate changes, which have become accentuated in the last decade. The way such species interact with climate changes, as well as their high specific ecological plasticity, gives them a consistent advantage over native plant specie...

One of the worldwide approaches for climate change mitigation is to act on reducing the anthropogenic contribution to the concentration of greenhouse gases (GHGs) in the atmosphere. The terrestrial and aquatic ecosystems are characterized by their natural exchange of GHGs with the atmosphere and also as a result of anthropogenic activities (managem...

Abstract The stability of air masses in the atmosphere influences not only the dispersion but even the accumulation of pollutants in certain areas. The most common methods for determining the stability in the atmosphere are the Richardson number, the Monin-Obukhov length and the Pasquill-Gifford method. For this study, the Monin-Obukhov length met...

The recovery potential of bricks wastes in obtaining environmental friendly materials is sustained by their pozzolanic properties, which can be exploited within a Portland cement—brick powder waste (BPW) system, thus reducing the amount of waste as well as the consumption of raw materials and CO2 emissions from cement factories. These properties we...

Morpho-hydrodynamic changes are one of the major problems affecting the abiotic sphere and the ecological status of water bodies. In order to assess the impact of the works carried out in the Bystroe Channel on the hydrodynamic and hydromorphological conditions of the Chilia and Old Stambul Danube branches, solid scientific based tools are required...

Shipping is one of the major pressures that have a negative impact on conservation efforts in protected wetlands in Romania. Based mainly on the use of fossil fuels, shipping activities contribute significantly to water and air pollution. Reducing the carbon footprint by implementing ammonia and hydrogen on board has gained increasing interest in r...

Monitoring and inspection of apartment building facades with the help of thermography aims to identify and evaluate construction defects and their effects on thermal efficiency. The analysis of facade cracks is of great importance in the investigation of construction issues, especially in the rehabilitation processes of buildings. In this paper we...

Carbon sequestration proved to be one of the best strategies in climate mitigation processes and forest have the capacity to sequester and store important amounts of carbon. In this study the carbon sequestration capacity of a hardwood forest in Eastern Romania is analyzed by using the European Information Scenario Model through a business-as-usual...

Green spaces located on buildings are an important part of urban environment, improving the quality of life through their aesthetic and functional advantages. However, they consume large amounts of resources from cities’ water supply systems. Moreover, rapid urbanization and population growth amplifies the issue on clean water supply, increasing th...

Zeolite is an abundant mineral in Indonesia, but is not maximally utilized. Natural zeolite possesses several properties, such as dehydration, adsorption, ion exchange, catalysis, and separation. In general, natural zeolite contains both organic and inorganic impurities that cover their pores. Thus, natural zeolite should be initially activated to...

One of the most effective and simplest methods to minimize waste as well as reduce the environmental problems associated with waste disposal is by utilizing waste materials as a cement replacement in hot mix asphalt (HMA) mixtures which can provide the same or better stability as the conventional method. Fillers play an important role in the stabil...

Fisheries research has focused mainly on the dynamics of populations under exploitation in order to be able to inform what measures are needed for the sustainable harvesting of biological resources. A necessary tool for the successful achievement of this objective is to determine the age of the fish. Thus, this article will detail a method for iden...

Water pollution by emerging contaminants such as antibiotics is a major and current problem in the field of environmental protection. The presence of these micropollutants in surface waters, even in low concentrations, disturbs the ecological balance and leads to the selection and increase of the antibiotic resistant bacteria incidence, so that the...

This paper analyses the effect of glucose supplementation in the treatment of anaerobically digested vinasse (AnVE) through reduction performance and biomass growth by using aerobic SBR system. The result revealed that the COD and ammonium reduction with the addition of glucose supplementation (65.3 ± 6.0 and 30.0 ± 5.5%) was greater than the react...

Particulate matter (PM10) is the key indicator of air quality index in Malaysia and Southeast Asia's main haze-related pollutant. PM10 emanation is believed to cause the strongest harm to public health and the environment. Therefore, it is very important to study the temporal and spatial characteristics of PM10 and the weather parameters, hence the...

There are several species of macrophyte which have the ability to absorb heavy metals from water and, therefore, are used to retain and remove them. In the present paper, the concentrations of heavy metals (Zn, Cu, Ni, Cd, Pb and Cr) were investigated in sediment samples from the Argeș River and their potential transfer from sediments to Phragmites...

The stability of air masses in the atmosphere influences not only the dispersion but even the accumulation of pollutants in certain areas. The most common methods for determining the stability in the atmosphere are the Richardson number, the Monin-Obukhov length and the Pasquill-Gifford method. For this study, the Monin-Obukhov length method was us...

The work relates to a composition of an additive mortar with a volumetric weight below 250kg/mc, the thermal conductivity coefficient below 0,08kcal/m×h×°C, mechanical strengths more than 7daN/cm² with self-cleaning effect after commissioning. In order to obtain a self-cleaning effect over time by eliminating chromatic deviations, the composition o...

Conservation and restoration of heritage structures represents a highlighted issue, the main challenge being to bring the cultural objective to its original state, or as close as possible to it by using eco-friendly materials with lover impact on the environment and human health. Within this study, the calcium zincate nanoparticles have been synthe...

Monitoring and inspection of apartment building facades with the help of thermography aims to identify and evaluate construction defects and their effects on thermal efficiency. The analysis of facade cracks is of great importance in the investigation of construction issues, especially in the rehabilitation processes of buildings. In this paper we...

Carbon sequestration proved to be one of the best strategies in climate mitigation processes and forest have the capacity to sequester and store important amounts of carbon. In this study the carbon sequestration capacity of a hardwood forest in Eastern Romania is analyzed by using the European Information Scenario Model through a business-as-usual...

Coronavirus disease 2019 is a contagious disease that occurs in humans caused by infection with the SARS-CoV-2 virus. Originally emerged in Wuhan, from Hubei Province, China, SARS-CoV-2 has spread rapidly around the world. In order to effectively combat this pandemic, a methodology must be found to be able to predict, early detect and monitor the e...

Invenția se referă la un procedeu de epurare avansată (terțiară) a apelor uzate prin care poluanții de natură chimică și microbiologică conținuți în apele provenite de la fermele zootehnice sunt îndepărtați sau reduși sub anumite limite prin metode chimice, astfel încât acestea să poată fi valorificate la irigarea culturilor agricole. Procedeul con...

Invenția se referă la un procedeu de epurare avansată (terțiară) a apelor uzate prin care poluanții de natură chimică și microbiologică conținuți în apele provenite de la fermele zootehnice sunt îndepărtați sau reduși sub anumite limite prin metode chimice, astfel încât acestea să poată fi valorificate la irigarea culturilor agricole. Procedeul con...

In the present work is presented a reusable support material based on waste, photo catalytically functionalized with zinc oxide film. The obtained immobilized catalyst was structurally characterized using SEM equipment and successfully used in the photocatalytic degradation of an organic compound present in aqueous solutions with yields of over 97%...

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...