György Deak

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

Hucho hucho habitats in the Răstoliţa River, Romania are under the pressure of anthropic activities, the most significant impact coming from hydrotechnical works implemented in the river started in the ‘80s. In the context of further development of the hydropower system, mitigation measures must be taken in order to ensure the conservation of ichth...

Deriving from the concept of ecological flow that applies to aquatic ecosystems as a hole, in order to improve the monthly values determined for the Răstoliţa dam using the national legislation method, the specific local conditions required by ichthyofauna were considered in the development of a new discharge echohydrograph - QDFLT for Răstoliţa Ri...

The oily wastewater represents one of the major threats to the environment nowadays and requires innovative water treatment technology. This review provides an overview of polymeric photocatalytic membranes used for oily wastewater treatment, with key focus on the pollution sources and the membrane materials. Moreover, the advantage of coupling the...

The impact of armed conflicts can be direct and indirect, highlighted by population displacement and casualties, infrastructure destruction, together with social and economic hiatus, but also the movement of air, water and soil pollutants across regional and national borders. There are numerous possible contamination sources of the water bodies and...

Historical migration routes for anadromous sturgeons in the Danube River have been interrupted by transversal structures for hydropower use, from which the Iron Gates hydropower system represents the first significant barrier upstream Danube from the Black Sea. For the implementation of DALIA project, funded by Horizon Europe, the National Institut...

The European Union has marked out various targets to achieve climate neutrality by 2050, one of which includes reducing CO2 emissions and the impact of climate change, through a transition to green energy and contributing to the EU targets on the production of an annual hydrogen capacity of 1 million tons by 2025 and 10 million tons by 2030. In thi...

Hydrogen production from renewable energy sources is a sustainable idea both in the field of energy storage and for environmental protection. Still, the fluctuations of production levels can become an impediment and may attract risks or additional production costs. In order to predict hydrogen production from such sources, an Artificial Intelligenc...

The three wild anadromous sturgeon species currently present in the Black Sea and Lower Danube are in a critically endangered state. Their population has been consistently declining due to a combination of various factors, both caused by human activity and natural phenomena. These factors include unsustainable exploitation and poaching, hydro-techn...

This study emphasises the complexity of carbon dioxide (CO2) emission dynamics by conducting a wetland case study along the Dambovita River. Our evaluation highlights the importance of considering spatial variability, meteorological parameters and water quality parameters. The variations in CO2 emissions have been monitored using two complementary...

Technology in concrete is rapidly developing to improve the quality and properties of concrete. One of the many recycled materials is worn-out tyres. Currently, the use of tires is very widespread considering the use of vehicles that increase from time to time. Piles of discarded tires can cause a lot of damage to the environment. So, by using stee...

Wastewater-based epidemiology (WBE) has been previously used as a tool for pathogen identification within communities. After the SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) outbreak, in 2020, Daughton proposed the implementation of a wastewater surveillance strategy that could determine the incidence of COVID-19 (coronavirus diseas...

Wetlands are characterised by distinct hydrological regimes and have significant importance in the global carbon cycle, having the potential to reduce carbon emissions through long-term carbon storage in the soil. In this study, carbon dynamics were simulated using a process-based model DeNitrification-DeComposition (DNDC), for two locations along...

The anadromous sturgeon species in the lower Danube are currently critically endangered and based on the studies of the INCDPM expert team and the 2022 report of IUCN-SSG (Sturgeon Specialist Group) it appears that the future prospects of these populations are unfavourable. This situation occurs mainly as a result of anthropogenic impacts, especial...

Citation: Jawdhari, A.; Deák, G.; Mihăilescu, D.F.; Crăciun, N.; Staicu, A.C.; Stanca, I.; Cozorici, D.; Fendrihan, S.; Pop, C.-E.; Mernea, M. Ingested Microplastics Can Act as Microbial Vectors of Ichthyofauna. Microbiol. Res. 2024, 15, 614-625. Abstract: Microplastics (plastic particles < 5 mm) are ubiquitous pollutants that have the ability to c...

Excessive agricultural waste in the agricultural industry leads to various forms of pollution, including water pollution. To address this issue, there's a growing interest in finding alternative methods. One approach is to utilize agricultural waste as natural resource-based adsorbents to eliminate contaminants, such as the case of methylene blue (...

Microplastics (plastic particles < 5 mm) are ubiquitous pollutants that pose the ability to carry microbiota, including pathogens. Microbial adhesion is usually a sign of pathogenicity, thus we investigated the adherent strains found on 4 mm nylon strips, which were ingested and excreted by wild fish specimens. Polymer analysis of the excreted samp...

Sturgeon species have inhabited the world's seas and rivers for more than 200 million years and hold significant taxonomic significance, representing a strong conservation interest in aquatic biodiversity as well as in the economic sector, as their meat and eggs (caviar) are highly valuable goods. Currently, sturgeon products and byproducts can be...

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...