Pub Date : 2022-12-27DOI: 10.5593/sgem2022v/3.2/s06.30
Antonio Chicuna Suami Gomes, K. Vorobyev, V. Shcherba, T. Chekushina, Mohamad Ali Alawiyeh
The paper reposts on a comprehensive study of Carbon Dioxide Enhanced Oil Recovery (CO2-EOR), a detailed literature and projects review. In one hand, according to past studies, when injected CO2 and residual oil are miscible (Miscible Displacement), the physical forces holding the two phases apart (Interfacial Tension, IFT) disappears; as CO2 dissolves in the oil, it swells the oil, reducing its viscosity and density. This allows the oil CO2 to displace the oil from the rock pores, pushing it towards a production well. On the other hand, when injected CO2 and residual oil are not miscible (Immiscible Displacement), this process is used as a secondary recovery method. As many experts look to carbon capture, utilization and storage (CCUS) as one of the best alternatives for dealing with carbon emissions, research studies and laboratory investigations have indicated that, beyond its potential to augment oil production, CO2-EOR is getting intensive scrutiny by the industry, government, and environmental organizations for its potential for permanently storing CO2. A good example is a study by Montana Tech University, which found that CO2 flooding of Montana�s Elm Coulee and Cedar Creek oil fields could result in the recovery of 666 million barrels of incremental oil and the storage of 640 billion cubic meters of CO2, which is equivalent to 7 years of supplier�s CO2 emissions (a coal-fired power plant). Some other projects in the U.S., Canada and Norway have been evaluated. An economic and ecological analysis of the CO2-EOR process have been provided.
{"title":"ANALYSIS OF THE CARBON DIOXIDE ENHANCED OIL RECOVERY TECHNOLOGY","authors":"Antonio Chicuna Suami Gomes, K. Vorobyev, V. Shcherba, T. Chekushina, Mohamad Ali Alawiyeh","doi":"10.5593/sgem2022v/3.2/s06.30","DOIUrl":"https://doi.org/10.5593/sgem2022v/3.2/s06.30","url":null,"abstract":"The paper reposts on a comprehensive study of Carbon Dioxide Enhanced Oil Recovery (CO2-EOR), a detailed literature and projects review. In one hand, according to past studies, when injected CO2 and residual oil are miscible (Miscible Displacement), the physical forces holding the two phases apart (Interfacial Tension, IFT) disappears; as CO2 dissolves in the oil, it swells the oil, reducing its viscosity and density. This allows the oil CO2 to displace the oil from the rock pores, pushing it towards a production well. On the other hand, when injected CO2 and residual oil are not miscible (Immiscible Displacement), this process is used as a secondary recovery method. As many experts look to carbon capture, utilization and storage (CCUS) as one of the best alternatives for dealing with carbon emissions, research studies and laboratory investigations have indicated that, beyond its potential to augment oil production, CO2-EOR is getting intensive scrutiny by the industry, government, and environmental organizations for its potential for permanently storing CO2. A good example is a study by Montana Tech University, which found that CO2 flooding of Montana�s Elm Coulee and Cedar Creek oil fields could result in the recovery of 666 million barrels of incremental oil and the storage of 640 billion cubic meters of CO2, which is equivalent to 7 years of supplier�s CO2 emissions (a coal-fired power plant). Some other projects in the U.S., Canada and Norway have been evaluated. An economic and ecological analysis of the CO2-EOR process have been provided.","PeriodicalId":331146,"journal":{"name":"SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132226091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-27DOI: 10.5593/sgem2022v/3.2/s12.20
T. Kučera, Zdeněk Zelený
In connection with the publication of the new European directive for drinking water, some new indicators of drinking water quality from the category of micropollutants have been introduced, which will have to be eliminated during the production of drinking water. The described research focused on selected progressive technologies applicable in water treatment regarding the removal of micropollutants. It is expected that for the elimination of other micropollutants it will be possible to use existing technologies used, for example, to remove pesticides, such as activated carbon filtration, high-pressure membranes, or technologies using nanomaterials will be deployed. Increased attention is paid to the use of nano-iron for water treatment. A series of laboratory tests of selected technologies with the potential to eliminate micropollutants is presented. The article presents the overall efficiency found in selected indicators during laboratory tests, the overall efficiency of technologies and the limits and limiting factors regarding the elimination of the given pollution are discussed.
{"title":"PROGRESSIVE WATER TREATMENT TECHNOLOGY TO REMOVE MICROPOLLUTANTS","authors":"T. Kučera, Zdeněk Zelený","doi":"10.5593/sgem2022v/3.2/s12.20","DOIUrl":"https://doi.org/10.5593/sgem2022v/3.2/s12.20","url":null,"abstract":"In connection with the publication of the new European directive for drinking water, some new indicators of drinking water quality from the category of micropollutants have been introduced, which will have to be eliminated during the production of drinking water. The described research focused on selected progressive technologies applicable in water treatment regarding the removal of micropollutants. It is expected that for the elimination of other micropollutants it will be possible to use existing technologies used, for example, to remove pesticides, such as activated carbon filtration, high-pressure membranes, or technologies using nanomaterials will be deployed. Increased attention is paid to the use of nano-iron for water treatment. A series of laboratory tests of selected technologies with the potential to eliminate micropollutants is presented. The article presents the overall efficiency found in selected indicators during laboratory tests, the overall efficiency of technologies and the limits and limiting factors regarding the elimination of the given pollution are discussed.","PeriodicalId":331146,"journal":{"name":"SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132819917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-27DOI: 10.5593/sgem2022v/3.2/s12.11
M. Bednar, D. Marton
Climate change�s effect on nature, the human population and water resources have become a serious issue. It affects the delicate balance between precipitation, evaporation, discharge and other interactions between the atmosphere and surface, which is represented by the water cycle as we know it. The adaptation of water resources to changing hydrological conditions within basins is crucial. However, the uncertainty of climate change makes it difficult for hydrological models to evaluate future conditions. To suppress the uncertainty that stems from the hydrological model itself, we propose a new modified lumped water balance model in monthly time steps to simulate the rainfallrunoff process more precisely, which will help to evaluate the predicted hydrological and climatological conditions under the uncertainty of climate change. Assessment of the effects of climate change is presented on the catchment above the Vir I reservoir on the Svratka River in the Czech Republic in Central Europe. The uncertainty of climate change is represented by an ensemble of future climatological projections using representative concentration pathways (RCP) scenarios. Two ensembles were generated: the first using RCP 4.5 and the second using RCP 8.5. Both scenarios were coupled with 18 global climate models which are available in LARS-WG 6 software. Analysis of the generated climatological quantities for both ensembles in the 2030s, 2050s, and 2090s periods on annual average relative to baseline values showed an increase in mean temperature of 21.4% (1.4�C), 33.1% (2.2�C) and 55.5% (3.7�C), an increase of potential evapotranspiration of 7.2%, 11.4% and 20.5%, and an increase in precipitation of 4.8%, 5.3% and 5.5%, respectively. Evaluated long-term mean streamflow showed a decrease in the 2030s, 2050s and 2090 of 1.0%, 3.1% and 2.9%, respectively, for RCP 4.5 and an increase of 1.8% in the 2030s but then also a decrease in the 2050s and 2090s of 2.3% and 17.9%, respectively, for RCP 8.5.
{"title":"IMPACT OF CLIMATE CHANGE ON HYDROLOGICAL AND METEOROLOGICAL QUANTITIES IN WATERSHED SCALE","authors":"M. Bednar, D. Marton","doi":"10.5593/sgem2022v/3.2/s12.11","DOIUrl":"https://doi.org/10.5593/sgem2022v/3.2/s12.11","url":null,"abstract":"Climate change�s effect on nature, the human population and water resources have become a serious issue. It affects the delicate balance between precipitation, evaporation, discharge and other interactions between the atmosphere and surface, which is represented by the water cycle as we know it. The adaptation of water resources to changing hydrological conditions within basins is crucial. However, the uncertainty of climate change makes it difficult for hydrological models to evaluate future conditions. To suppress the uncertainty that stems from the hydrological model itself, we propose a new modified lumped water balance model in monthly time steps to simulate the rainfallrunoff process more precisely, which will help to evaluate the predicted hydrological and climatological conditions under the uncertainty of climate change. Assessment of the effects of climate change is presented on the catchment above the Vir I reservoir on the Svratka River in the Czech Republic in Central Europe. The uncertainty of climate change is represented by an ensemble of future climatological projections using representative concentration pathways (RCP) scenarios. Two ensembles were generated: the first using RCP 4.5 and the second using RCP 8.5. Both scenarios were coupled with 18 global climate models which are available in LARS-WG 6 software. Analysis of the generated climatological quantities for both ensembles in the 2030s, 2050s, and 2090s periods on annual average relative to baseline values showed an increase in mean temperature of 21.4% (1.4�C), 33.1% (2.2�C) and 55.5% (3.7�C), an increase of potential evapotranspiration of 7.2%, 11.4% and 20.5%, and an increase in precipitation of 4.8%, 5.3% and 5.5%, respectively. Evaluated long-term mean streamflow showed a decrease in the 2030s, 2050s and 2090 of 1.0%, 3.1% and 2.9%, respectively, for RCP 4.5 and an increase of 1.8% in the 2030s but then also a decrease in the 2050s and 2090s of 2.3% and 17.9%, respectively, for RCP 8.5.","PeriodicalId":331146,"journal":{"name":"SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings","volume":"545 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120940419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-27DOI: 10.5593/sgem2022v/3.2/s12.16
A. Queiroz, Paulo Brito, A. E. Ribeiro, Eduardo V. Carneiro, N. S. Foureaux
Estradiol, also designed as 17- ? -estradiol, belongs to the pharmaceutical class of steroid estrogens and was included in the �Watch List� since 2013 the Directive 2013/39/EU due to its potential risk to human health and environment. The low removal efficiency of estrogens by the conventional wastewater treatment plants, becomes a major source of their release into different aquatic matrices. This work presents the optimization of an analytical methodology based on solid phase extraction and high-performance liquid chromatography using the response surface methodology to detect and quantify 17-?- Estradiol in wastewater treatment plant effluents. From a set of 10 studied solvent/mixture compositions, pure methanol was selected as the better choice to use as mobile phase composition for liquid chromatography. The solid phase extraction step was optimized using a three-level Box-Behnken experimental design with sample volume, sample pH, adsorbent drying time and solvent composition in the washing step, as the four factors to be studied. The sample volume of 500 mL, a sample pH value adjusted to a value of 2, an adsorbent drying time of 60 min and the use of 10% of methanol in the adsorbent washing step were the obtained optimized conditions. The pH value was concluded to be the more significant parameter for average recuperations of estradiol higher than 80%. The method validation was performed by monitoring 17-?-estradiol in real wastewater treatment plant samples, collected from raw affluent, secondary treatment and treated effluent. The methodology was tested successfully, and estradiol was quantified in all the three studied samples.
{"title":"OPTIMIZATION OF ESTRADIOL MONITORING IN RAW AND TREATED WASTEWATER SAMPLES BY RESPONSE SURFACE METHODOLOGY","authors":"A. Queiroz, Paulo Brito, A. E. Ribeiro, Eduardo V. Carneiro, N. S. Foureaux","doi":"10.5593/sgem2022v/3.2/s12.16","DOIUrl":"https://doi.org/10.5593/sgem2022v/3.2/s12.16","url":null,"abstract":"Estradiol, also designed as 17- ? -estradiol, belongs to the pharmaceutical class of steroid estrogens and was included in the �Watch List� since 2013 the Directive 2013/39/EU due to its potential risk to human health and environment. The low removal efficiency of estrogens by the conventional wastewater treatment plants, becomes a major source of their release into different aquatic matrices. This work presents the optimization of an analytical methodology based on solid phase extraction and high-performance liquid chromatography using the response surface methodology to detect and quantify 17-?- Estradiol in wastewater treatment plant effluents. From a set of 10 studied solvent/mixture compositions, pure methanol was selected as the better choice to use as mobile phase composition for liquid chromatography. The solid phase extraction step was optimized using a three-level Box-Behnken experimental design with sample volume, sample pH, adsorbent drying time and solvent composition in the washing step, as the four factors to be studied. The sample volume of 500 mL, a sample pH value adjusted to a value of 2, an adsorbent drying time of 60 min and the use of 10% of methanol in the adsorbent washing step were the obtained optimized conditions. The pH value was concluded to be the more significant parameter for average recuperations of estradiol higher than 80%. The method validation was performed by monitoring 17-?-estradiol in real wastewater treatment plant samples, collected from raw affluent, secondary treatment and treated effluent. The methodology was tested successfully, and estradiol was quantified in all the three studied samples.","PeriodicalId":331146,"journal":{"name":"SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120838612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-27DOI: 10.5593/sgem2022v/3.2/s14.35
O. Liashenko, D. Kyryichuk, Nadiia Holovina, V. Prachyk, Svitlana Bunkus
The territory of Ukraine is characterized by the occurrence of a large number of wildfires, mainly in mixed and coniferous forest ecosystems of Polissia, Forest-Steppe and Ukrainian Carpathians. The frequency of occurrence and destructive consequences of natural fires in forest ecosystems require the adoption of prompt measures aimed at their prevention, localization and liquidation. Monitoring plays the main role in the process of preventing wildfires, since observation, collection, analysis and assessment of qualitative and quantitative parameters of the state of forest ecosystems, dangerous processes occurring in them, as well as potential sources of wildfires will allow developing and implementing measures aimed at preserving biodiversity and gene pool of forest biocenoses, reduction of material losses, localization of zones of natural fires, termination of the action of dangerous factors characteristic of them. The main field of practical application of monitoring is the information service of the authorities in the conditions of wildfires. Information monitoring system (IMS) is a distributed system of continuous observations, laboratory and other control for assessing the state of forest ecosystems, as well as dangerous processes occurring in them that can lead to a threat or the occurrence of fires, as well as timely identification of trends in their change. The main tasks of the IMS are: assessment of the impact of fires, recreation, pests and diseases on forest ecosystems, identification of the extent of forest damage, formation of an information fund on hazardous factors and processes that can lead to fires, assessment of the socio-economic consequences of fires, preparation of proposals for improvement of the activities of monitoring subjects - executive authorities and local governments on the issues of preventing negative changes in the field of natural security. For the development of the IMS, an object-oriented methodology and Java multithreading technology were chosen. The use of multithreading technology in a distributed IMS made it possible to implement the requirements for simultaneous support of many users, each of which was allocated a separate thread, as well as the separation and parallel processing of information resources. All threads are executed independently of each other, so there is no blocking of users in the IMS, and it is possible to perform several operations at the same time. The basis of the IMS is a database that contains information on forest and steppe fires with an area of over 5 ha, as well as peat fires with an area of over 1 ha. Information about fires in natural ecosystems contains: coordinates, the area of fire and smoke plume, the area of affected forests, natural meadows, farmland, its% of the total area, the presence and number of affected settlements, the presence and number of fire victims.
{"title":"DEVELOPMENT OF INFORMATION TECHNOLOGY FOR MONITORING OF FOREST ECOSYSTEMS UNDER CONDITIONS OF WILDFIRES","authors":"O. Liashenko, D. Kyryichuk, Nadiia Holovina, V. Prachyk, Svitlana Bunkus","doi":"10.5593/sgem2022v/3.2/s14.35","DOIUrl":"https://doi.org/10.5593/sgem2022v/3.2/s14.35","url":null,"abstract":"The territory of Ukraine is characterized by the occurrence of a large number of wildfires, mainly in mixed and coniferous forest ecosystems of Polissia, Forest-Steppe and Ukrainian Carpathians. The frequency of occurrence and destructive consequences of natural fires in forest ecosystems require the adoption of prompt measures aimed at their prevention, localization and liquidation. \u0000Monitoring plays the main role in the process of preventing wildfires, since observation, collection, analysis and assessment of qualitative and quantitative parameters of the state of forest ecosystems, dangerous processes occurring in them, as well as potential sources of wildfires will allow developing and implementing measures aimed at preserving biodiversity and gene pool of forest biocenoses, reduction of material losses, localization of zones of natural fires, termination of the action of dangerous factors characteristic of them. The main field of practical application of monitoring is the information service of the authorities in the conditions of wildfires. \u0000Information monitoring system (IMS) is a distributed system of continuous observations, laboratory and other control for assessing the state of forest ecosystems, as well as dangerous processes occurring in them that can lead to a threat or the occurrence of fires, as well as timely identification of trends in their change. \u0000The main tasks of the IMS are: assessment of the impact of fires, recreation, pests and diseases on forest ecosystems, identification of the extent of forest damage, formation of an information fund on hazardous factors and processes that can lead to fires, assessment of the socio-economic consequences of fires, preparation of proposals for improvement of the activities of monitoring subjects - executive authorities and local governments on the issues of preventing negative changes in the field of natural security. \u0000For the development of the IMS, an object-oriented methodology and Java multithreading technology were chosen. The use of multithreading technology in a distributed IMS made it possible to implement the requirements for simultaneous support of many users, each of which was allocated a separate thread, as well as the separation and parallel processing of information resources. All threads are executed independently of each other, so there is no blocking of users in the IMS, and it is possible to perform several operations at the same time. \u0000The basis of the IMS is a database that contains information on forest and steppe fires with an area of over 5 ha, as well as peat fires with an area of over 1 ha. Information about fires in natural ecosystems contains: coordinates, the area of fire and smoke plume, the area of affected forests, natural meadows, farmland, its% of the total area, the presence and number of affected settlements, the presence and number of fire victims.","PeriodicalId":331146,"journal":{"name":"SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124037644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-27DOI: 10.5593/sgem2022v/3.2/s12.07
F. Radu, S. Popescu, A. Cozma, A. Rinovetz, B. Radoi
The purpose of this study was to demonstrate the role played by different wastewater treatment technologies in the dairy industry in the context of the challenges of sustainable development: water scarcity and conservation of water resources, the constant growth of the population and the costs of wastewater treatment in centralized systems, increasing constraints and stricter environmental protection regulations. In this sense, the efficiency of wastewater treatment plants belonging to a number of 8 factories was determined. The studied factories were divided into three groups according to the type of wastewater treatment technology, namely: the first group uses only the pretreatment stage; the second uses the mechanical-chemical and biological treatment stages with biogas production; the third group has an aerobic biological treatment coupled with a reverse osmosis module. Water samples were taken weekly from the influent and effluent of each wastewater treatment plant for 6 months (March-August 2022). A number of 8 quality parameters were analyzed for both waste water and treated water, in accordance with the national regulations. The results highlighted the fact that the values of chemical oxygen consumption (COD), five-days biochemical oxygen consumption (BOD5), total suspended solids (TSS), phosphorus (PTotal), respectively total nitrogen (NTotal), and ammonium nitrogen for all wastewater samples far exceeded the limits of admissibility provided by the national wastewater quality standards. Instead, the pH values and the chloride content were within acceptable limits. The apply of mechanical and biological wastewater treatments determined the decrease of COD, BOD5 and TSS concentrations by more than 95%, respectively by more than 85% in the case of PTotal. The efficiency of the reverse osmosis module was over 95% in the case of ammonium nitrogen elimination. As a result of the onsite implementation of these technologies for the treatment of wastewater from the dairy industry, the values of the quality indicators of the effluents were in accordance with the regulations regarding the discharge of treated water into natural receivers or into the urban sewage network without affecting the environment.
{"title":"EARLY REMEDIATION OF WASTEWATERS FROM ROMANIAN FOOD INDUSTRY: A CASE STUDY OF IMPROVING THE QUALITY OF DAIRY INDUSTRY WASTEWATER","authors":"F. Radu, S. Popescu, A. Cozma, A. Rinovetz, B. Radoi","doi":"10.5593/sgem2022v/3.2/s12.07","DOIUrl":"https://doi.org/10.5593/sgem2022v/3.2/s12.07","url":null,"abstract":"The purpose of this study was to demonstrate the role played by different wastewater treatment technologies in the dairy industry in the context of the challenges of sustainable development: water scarcity and conservation of water resources, the constant growth of the population and the costs of wastewater treatment in centralized systems, increasing constraints and stricter environmental protection regulations. In this sense, the efficiency of wastewater treatment plants belonging to a number of 8 factories was determined. The studied factories were divided into three groups according to the type of wastewater treatment technology, namely: the first group uses only the pretreatment stage; the second uses the mechanical-chemical and biological treatment stages with biogas production; the third group has an aerobic biological treatment coupled with a reverse osmosis module. Water samples were taken weekly from the influent and effluent of each wastewater treatment plant for 6 months (March-August 2022). A number of 8 quality parameters were analyzed for both waste water and treated water, in accordance with the national regulations. The results highlighted the fact that the values of chemical oxygen consumption (COD), five-days biochemical oxygen consumption (BOD5), total suspended solids (TSS), phosphorus (PTotal), respectively total nitrogen (NTotal), and ammonium nitrogen for all wastewater samples far exceeded the limits of admissibility provided by the national wastewater quality standards. Instead, the pH values and the chloride content were within acceptable limits. The apply of mechanical and biological wastewater treatments determined the decrease of COD, BOD5 and TSS concentrations by more than 95%, respectively by more than 85% in the case of PTotal. The efficiency of the reverse osmosis module was over 95% in the case of ammonium nitrogen elimination. As a result of the onsite implementation of these technologies for the treatment of wastewater from the dairy industry, the values of the quality indicators of the effluents were in accordance with the regulations regarding the discharge of treated water into natural receivers or into the urban sewage network without affecting the environment.","PeriodicalId":331146,"journal":{"name":"SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130576043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-27DOI: 10.5593/sgem2022v/3.2/s12.13
Darinka Kiš-Novak
The Water Area Management Plan 2016-2021 assessed reservoirs as natural water bodies. This assessment included their ecological condition. The goal of the intercalibration procedure is to achieve consistency, comparability of results and evaluation of the ecological state based on the biological element of macrozoobenthos quality. The paper presents the results of research on the Cakovec HPP and Dubrava HPP reservoirs on the Drava River from 1999 and 2003. Complex studies of individual biological elements of macrozoobenthos included seasonal monitoring. They are part of the overall state of the cenosis and water quality with the aim of determining trophic characteristics and water quality by monitoring the quantitative and qualitative composition of the population of macrozoobenthos.The research obtained the values of the abundance of individual taxa of bottom macrofauna by reservoir stations, the total number of individuals, the number of indicator individuals, the saprobic index (SI), the number of taxa and the number of indicator taxa. The author compared the obtained results with the old and new Regulations on water quality standards in the prescribed indices and limit values of the macrozoobenthos biological element. The obtained results show the bad ecological condition of the reservoirs (as well as the ecological potential). In 2021, this area officially became part of the Five-State Biosphere Reserve.
{"title":"INTERCALIBRATION PROCEDURE OF THE FRAMEWORK DIRECTIVE ON WATER - COMPARISON OF RESULTS FOR MACROZOOBENTHOS ON THE EXAMPLE OF RESERVOIR LAKES OF THE DRAVA RIVER IN MEDUMURJE, CROATIA","authors":"Darinka Kiš-Novak","doi":"10.5593/sgem2022v/3.2/s12.13","DOIUrl":"https://doi.org/10.5593/sgem2022v/3.2/s12.13","url":null,"abstract":"The Water Area Management Plan 2016-2021 assessed reservoirs as natural water bodies. This assessment included their ecological condition. The goal of the intercalibration procedure is to achieve consistency, comparability of results and evaluation of the ecological state based on the biological element of macrozoobenthos quality. The paper presents the results of research on the Cakovec HPP and Dubrava HPP reservoirs on the Drava River from 1999 and 2003. Complex studies of individual biological elements of macrozoobenthos included seasonal monitoring. They are part of the overall state of the cenosis and water quality with the aim of determining trophic characteristics and water quality by monitoring the quantitative and qualitative composition of the population of macrozoobenthos.The research obtained the values of the abundance of individual taxa of bottom macrofauna by reservoir stations, the total number of individuals, the number of indicator individuals, the saprobic index (SI), the number of taxa and the number of indicator taxa. The author compared the obtained results with the old and new Regulations on water quality standards in the prescribed indices and limit values of the macrozoobenthos biological element. The obtained results show the bad ecological condition of the reservoirs (as well as the ecological potential). In 2021, this area officially became part of the Five-State Biosphere Reserve.","PeriodicalId":331146,"journal":{"name":"SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128461558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-27DOI: 10.5593/sgem2022v/3.2/s12.10
I. Catianis, Dan-Lucian Vasiliu, A. Constantinescu, B. Ispas, O. Dobre
Several geochemical analyses (bulk parameters, particle size, loss on ignition, major, minor and trace elements) were performed on 51 recent sediment samples collected in May 2022 from Rosulet, Rosu and Puiu lakes which are located in the fluvio-marine delta plain of the Danube Delta, Romania. The aim of this study was to decipher the potential origin of anthropogenic and/or natural sources, weathering, sedimentary processes and the local geochemical fingerprint on the distribution of specific chemical elements in lacustrine sediments. The resulting compositional dataset showed an interesting spatial variation of the investigated variables. Loss on ignition identified higher concentration of sedimentary organic matter (TOM%) suggesting the autochthonous input derived largely from macro-and micro-phytoplankton, remnants of the biota etc. Similarly, the higher concentrations of total carbonates (CAR%) are attributed to autochthonous input being associated with biogenic debris. Generally, the particle size results exhibited that the lacustrine samples belong to the textural categories as sandy silt and silt. The spatial distribution of major (CaCO3%, TOC%, Fe2O3%), minor (MnO%) and trace components (Rb, Sr, Zr mg/kg) is considerably influenced by the sediment catchment basin lithology. Technophilic elements results (As, Cr, Cu, Hg, Ni, Pb, V and Zn) were related to the maximum allowable limits (MAL) and/or to the natural background reference values stipulated by the national environmental references. Based on the results of contamination analysis, most of the heavy metals (Cr, Cu Pb and Zn) were below the limits (MAL), implying that they have insignificant environmental risk. Instead, the obtained results implied a relatively high concentration of As, Hg, Ni and V, which exceed the corresponding reference standards in some samples. This may be attributed to the presence of allochthonous elevated concentrations of metals transported by the main and secondary hydrographic network waterways up to the interdistributary depressions, or as a consequence of autochthonous input, reflecting a local signature of the natural geochemical fingerprint. The findings from this study provide useful information for the environmental risk assessment relating to the current environmental conditions within deltaic ecosystems as an integral part of the Danube Delta Biosphere Reserve, one of the world�s most important and vulnerable areas in terms of pollution, Danube River water levels, extreme weather conditions (floods and droughts), and other factors exacerbated by the climate change.
{"title":"GEOCHEMICAL CHARACTERIZATION OF ORGANIC-RICH LACUSTRINE SEDIMENTS FROM ROSULET, ROSU AND PUIU LAKES, DANUBE DELTA, ROMANIA","authors":"I. Catianis, Dan-Lucian Vasiliu, A. Constantinescu, B. Ispas, O. Dobre","doi":"10.5593/sgem2022v/3.2/s12.10","DOIUrl":"https://doi.org/10.5593/sgem2022v/3.2/s12.10","url":null,"abstract":"Several geochemical analyses (bulk parameters, particle size, loss on ignition, major, minor and trace elements) were performed on 51 recent sediment samples collected in May 2022 from Rosulet, Rosu and Puiu lakes which are located in the fluvio-marine delta plain of the Danube Delta, Romania. The aim of this study was to decipher the potential origin of anthropogenic and/or natural sources, weathering, sedimentary processes and the local geochemical fingerprint on the distribution of specific chemical elements in lacustrine sediments. The resulting compositional dataset showed an interesting spatial variation of the investigated variables. Loss on ignition identified higher concentration of sedimentary organic matter (TOM%) suggesting the autochthonous input derived largely from macro-and micro-phytoplankton, remnants of the biota etc. Similarly, the higher concentrations of total carbonates (CAR%) are attributed to autochthonous input being associated with biogenic debris. Generally, the particle size results exhibited that the lacustrine samples belong to the textural categories as sandy silt and silt. The spatial distribution of major (CaCO3%, TOC%, Fe2O3%), minor (MnO%) and trace components (Rb, Sr, Zr mg/kg) is considerably influenced by the sediment catchment basin lithology. Technophilic elements results (As, Cr, Cu, Hg, Ni, Pb, V and Zn) were related to the maximum allowable limits (MAL) and/or to the natural background reference values stipulated by the national environmental references. Based on the results of contamination analysis, most of the heavy metals (Cr, Cu Pb and Zn) were below the limits (MAL), implying that they have insignificant environmental risk. Instead, the obtained results implied a relatively high concentration of As, Hg, Ni and V, which exceed the corresponding reference standards in some samples. This may be attributed to the presence of allochthonous elevated concentrations of metals transported by the main and secondary hydrographic network waterways up to the interdistributary depressions, or as a consequence of autochthonous input, reflecting a local signature of the natural geochemical fingerprint. The findings from this study provide useful information for the environmental risk assessment relating to the current environmental conditions within deltaic ecosystems as an integral part of the Danube Delta Biosphere Reserve, one of the world�s most important and vulnerable areas in terms of pollution, Danube River water levels, extreme weather conditions (floods and droughts), and other factors exacerbated by the climate change.","PeriodicalId":331146,"journal":{"name":"SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116010599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-27DOI: 10.5593/sgem2022v/3.2/s14.49
Bilyana Grigorova-Pesheva, Kamelia Petrova, B. Malcheva
Microbiological studies of forest soils are an important field of research due to the role of forest as carbon sinks and the main role of microorganisms in biogeochemical cycle and in the transformation of organic mass. Microbiological monitoring of soils in forest ecosystems is of key importance to achieve accurate and comparable data. This paper examines the interrelationship of soil microbial communities with different environmental characteristics. For the purpose of the study, the influence of soil type, the influence of some soil parameters, tree composition and altitude on microbial abundance were analyzed. Basic soil parameters were evaluated - content of organic carbon and pH in water extract. For the purpose of the study, 20 representative sample plots were laid out in the territory of Vitosha nature park. The sample plots are in Cambisols and Umbrisols. The microbiological abundance of soils was determined. The total microbial number varied from 5.59 to 6.60 CFU log10/g soil mass. Cambisols have a higher microbial abundance. The sample plots with higher microbial abundance are concentrate at altitudes between 1200 m a.s.l. and 1500 m a.s.l. The data were evaluated statistically. Of greatest importance in the study sample plots is altitude, followed by organic carbon content. Sample plots under mix vegetation have greater microbial abundance. Under coniferous vegetation, the participation of micromycetes in the microbial communities clearly stands out.
{"title":"STUDY OF INFLUENCE OF SOIL TYPE, VEGETATION, ALTITUDE AND ORGANIC CARBON CONTENT ON SOIL MICROBIAL ABUNDANCE","authors":"Bilyana Grigorova-Pesheva, Kamelia Petrova, B. Malcheva","doi":"10.5593/sgem2022v/3.2/s14.49","DOIUrl":"https://doi.org/10.5593/sgem2022v/3.2/s14.49","url":null,"abstract":"Microbiological studies of forest soils are an important field of research due to the role of forest as carbon sinks and the main role of microorganisms in biogeochemical cycle and in the transformation of organic mass. Microbiological monitoring of soils in forest ecosystems is of key importance to achieve accurate and comparable data. This paper examines the interrelationship of soil microbial communities with different environmental characteristics. For the purpose of the study, the influence of soil type, the influence of some soil parameters, tree composition and altitude on microbial abundance were analyzed. Basic soil parameters were evaluated - content of organic carbon and pH in water extract. For the purpose of the study, 20 representative sample plots were laid out in the territory of Vitosha nature park. The sample plots are in Cambisols and Umbrisols. The microbiological abundance of soils was determined. The total microbial number varied from 5.59 to 6.60 CFU log10/g soil mass. Cambisols have a higher microbial abundance. The sample plots with higher microbial abundance are concentrate at altitudes between 1200 m a.s.l. and 1500 m a.s.l. The data were evaluated statistically. Of greatest importance in the study sample plots is altitude, followed by organic carbon content. Sample plots under mix vegetation have greater microbial abundance. Under coniferous vegetation, the participation of micromycetes in the microbial communities clearly stands out.","PeriodicalId":331146,"journal":{"name":"SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115593413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-27DOI: 10.5593/sgem2022v/3.2/s12.24
J. Cernák, Denisa Čiderová, Giorgi Benashvili
When considering the (sub)region of Central and Eastern Europe (CEE) and its position in the global economy in relative terms represented by trade openness, the European Union (EU) members from the CEE (sub)region tend to match or even exceed the EU average and EU membership underlines their potential. Recently, environmental concerns have become prominent in international trade and in the framework of its external relations the EU seeks to boost its ambition of a global player. Our paper is oriented on the economic diplomacy and environmental diplomacy theme � in terms of EU competences represented by �commercial diplomacy�, �trade diplomacy� and the �Green Deal diplomacy�. To promote more sustainable developments, the EU�s European Green Deal (2019) emphasises the Comprehensive Strategy of the EU with Africa and this is why the aim of our paper was to assess the EU�s interests in transregional sense by applying the Pareto-optimal scenario/the Nash equilibrium to the qualitative hypothesis formulated: �Geostrategic interests of China and of the postBrexit EU in the process of shaping a new EU strategy towards Africa are partly of a rival and partly of a complementary nature�. When documenting quantitative & qualitative sustainable development trends in the context of international spillovers and relevance of both transregional complementarity & rivalry between the EU and PRC/China, our paper addressed the United Nations 2030 Agenda as well as the African Union Agenda 2063.
{"title":"SUSTAINABLE ECONOMIC DEVELOPMENT FROM GLOBAL PERSPECTIVE: TRANSREGIONAL EUROPEAN UNION ECONOMIC DIPLOMACY AND �GREEN DEAL DIPLOMACY�","authors":"J. Cernák, Denisa Čiderová, Giorgi Benashvili","doi":"10.5593/sgem2022v/3.2/s12.24","DOIUrl":"https://doi.org/10.5593/sgem2022v/3.2/s12.24","url":null,"abstract":"When considering the (sub)region of Central and Eastern Europe (CEE) and its position in the global economy in relative terms represented by trade openness, the European Union (EU) members from the CEE (sub)region tend to match or even exceed the EU average and EU membership underlines their potential. Recently, environmental concerns have become prominent in international trade and in the framework of its external relations the EU seeks to boost its ambition of a global player. Our paper is oriented on the economic diplomacy and environmental diplomacy theme � in terms of EU competences represented by �commercial diplomacy�, �trade diplomacy� and the �Green Deal diplomacy�. To promote more sustainable developments, the EU�s European Green Deal (2019) emphasises the Comprehensive Strategy of the EU with Africa and this is why the aim of our paper was to assess the EU�s interests in transregional sense by applying the Pareto-optimal scenario/the Nash equilibrium to the qualitative hypothesis formulated: �Geostrategic interests of China and of the postBrexit EU in the process of shaping a new EU strategy towards Africa are partly of a rival and partly of a complementary nature�. When documenting quantitative & qualitative sustainable development trends in the context of international spillovers and relevance of both transregional complementarity & rivalry between the EU and PRC/China, our paper addressed the United Nations 2030 Agenda as well as the African Union Agenda 2063.","PeriodicalId":331146,"journal":{"name":"SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114145050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：