Romanian Journal of Ecology & Environmental Chemistry最新文献_第6页

Determination of position of hydraulic jump in a flume by using CFD and comparison with experiential results https://doi.org/10.21698/rjeec.2020.211 P 基于CFD的水槽水力跃点位置的确定及与经验结果的比较https://doi.org/10.21698/rjeec.2020.211 P

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2020-10-14 DOI: 10.21698/rjeec.2020.211

A. Yıldız, A. İ. Marti, A. Yarar, V. Yılmaz

{"title":"Determination of position of hydraulic jump in a flume by using CFD and comparison with experiential results https://doi.org/10.21698/rjeec.2020.211 P","authors":"A. Yıldız, A. İ. Marti, A. Yarar, V. Yılmaz","doi":"10.21698/rjeec.2020.211","DOIUrl":"https://doi.org/10.21698/rjeec.2020.211","url":null,"abstract":"Dams and hydraulic structures are used for the supply and control of water, which have great importance on human life. The sluice gate is one of the hydraulic control structures. Sluice gates release excess water from the reservoir to the downstream side in a controlled manner with a certain discharge for controlling the level of the reservoir. A hydraulic jump is created to dissipate the energy of flow coming from under the gates. A hydraulic jump occurs when the flow regime is changed from subcritical to supercritical. However, the position of the hydraulic jump in the channel should be known exactly to prevent damage to surrounding structures. In this study, an open channel system with a sluice gate is used to produce a hydraulic jump. Experiments are conducted for two different gate openings (a1=1.5 cm and a2=2 cm) and 16 discharge values. For each case, the position of the hydraulic jump is determined. In addition, flow depths at 5 different points were measured including before and after the hydraulic jump. The results obtained from the experimental study were compared with the numerical model in terms of the position of hydraulic jump and flow depths. According to the results obtained, the numerical model and the physical model showed between 80 and 91% consistency.","PeriodicalId":21370,"journal":{"name":"Romanian Journal of Ecology & Environmental Chemistry","volume":"149 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85611288","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}

引用次数: 2

A comparative evaluation of surface water quality standards for lakes and fishponds from Bucharest and vicinity 布加勒斯特及其附近地区湖泊和鱼塘地表水质量标准的比较评价

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2020-10-14 DOI: 10.21698/rjeec.2020.204

Gina Vasile Scăețeanu, R. Madjar, Mala-Maria Stravescu-Bedivan

{"title":"A comparative evaluation of surface water quality standards for lakes and fish\u0000ponds from Bucharest and vicinity","authors":"Gina Vasile Scăețeanu, R. Madjar, Mala-Maria Stravescu-Bedivan","doi":"10.21698/rjeec.2020.204","DOIUrl":"https://doi.org/10.21698/rjeec.2020.204","url":null,"abstract":"Monitoring of lakes and ponds water quality parameters is important to evaluate the interactions between quality and effects on aquatic organisms’ growth and health. Even if each water parameter individually may not be relevant, several parameters together can reveal dynamic processes that occur in the water. For instance, unbalanced pH values may increase ammonia and hydrogen sulfide toxicity. Nitrogen and phosphorus are associated with plant and algae growth, although phosphorus is generally the limiting nutrient in freshwater bodies. Accordingly, it is recommended to monitor and assess water quality parameters based on routine analyses. Therefore, the aim of this study was to generate an overview of our researches related to the monitoring of water quality collected from lakes and fish ponds. The parameters on the basis of which was evaluated the quality of water were: pH, electrical conductivity (EC), total hardness (TH), chemical oxygen demand (COD), nitrate-nitrogen (N-NO3-), nitrite nitrogen (N-NO2-), ammonium nitrogen (N-NH4+), phosphate phosphorus (P-PO43-).","PeriodicalId":21370,"journal":{"name":"Romanian Journal of Ecology & Environmental Chemistry","volume":"167 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81502723","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}

引用次数: 0

LIQUID PHASE CHROMATOGRAPHIC METHODS APPLIED TO DETERMINE EMERGING CONTAMINANTS IN ENVIRONMENTAL SAMPLES 液相色谱法测定环境样品中新出现的污染物

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2020-07-31 DOI: 10.21698/rjeec.2020.102

V. Iancu, J. Pêtre, T. Galaon, G. Serban, M. Niculescu, F. Chiriac, R. Scutariu, S. Gheorghe, G. Radu

{"title":"LIQUID PHASE CHROMATOGRAPHIC METHODS APPLIED TO DETERMINE EMERGING CONTAMINANTS IN ENVIRONMENTAL SAMPLES","authors":"V. Iancu, J. Pêtre, T. Galaon, G. Serban, M. Niculescu, F. Chiriac, R. Scutariu, S. Gheorghe, G. Radu","doi":"10.21698/rjeec.2020.102","DOIUrl":"https://doi.org/10.21698/rjeec.2020.102","url":null,"abstract":"Emerging contaminants are a heterogeneous group of chemicals that include daily personal care products and pharmaceuticals (PPCPs), flame retardants, endocrine-disrupting chemicals (EDCs) and nanoparticles (NPs) present in environment which are unregulated. In this review, we present the methods of analysis conducted by INCD-ECOIND regarding some classes of emerging contaminants (neonicotinoid pesticides, beta-blocker drugs) that are not regulated by the legislation, in different types of environmental samples (wastewater, surface water). The present review presents the selective solid-phase extraction (SPE) methods used for isolation of the targeted\u0000compounds from aqueous matrices and also the main instrumental parameters of the separation and detection process. After extraction, the compounds were subjected to liquid phase chromatographic separation with mass spectrometric detection (UHPLC-MS/MS). Finally, the methods were applied in the determination of compounds from different categories of water, carrying out studies on the efficiency of elimination of compounds in several municipal wastewater treatment plants (WWTPs). In addition, the impact of the treatment plants on some receiving surface water used to obtain drinking water was studied.","PeriodicalId":21370,"journal":{"name":"Romanian Journal of Ecology & Environmental Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83042700","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}

引用次数: 0

COMPARISON OF FLUTAMIDE DEGRADATION VIA UV/TIO2, UV/H2O2 AND UV/H2O2/TIO2 SYSTEMS uv / tio2、uv / h2o2和uv / h2o2 / tio2体系降解氟他胺的比较

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2020-07-31 DOI: 10.21698/rjeec.2020.101

L. Constantin, M. Constantin, Ines Nițoi, T. Galaon, V. Badescu, N. Cristea

引用次数: 0

IMPLEMENTING AN INNOVATION MANAGEMENT SYSTEM AT NATIONAL RESEARCH AND DEVELOPMENT INSTITUTE FOR INDUSTRIAL ECOLOGY - ECOIND 实施国家工业生态研究院创新管理制度

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2020-07-31 DOI: 10.21698/rjeec.2020.106

I. V. Criste

引用次数: 1

WASTE MANAGEMENT AND THEIR ENVIRONMENTAL IMPACT: CHALLENGES AND OPPORTUNITIES AT NATIONAL LEVEL 废物管理及其环境影响:国家一级的挑战和机遇

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2020-07-31 DOI: 10.21698/rjeec.2020.108

Lidia Kim, M. Arama, Gheorghe Batrinescu, M. Bratu, A. Serbanescu, C. Lehr

{"title":"WASTE MANAGEMENT AND THEIR ENVIRONMENTAL IMPACT: CHALLENGES AND OPPORTUNITIES AT NATIONAL LEVEL","authors":"Lidia Kim, M. Arama, Gheorghe Batrinescu, M. Bratu, A. Serbanescu, C. Lehr","doi":"10.21698/rjeec.2020.108","DOIUrl":"https://doi.org/10.21698/rjeec.2020.108","url":null,"abstract":"Both nationally and globally, waste generation increases with increasing product consumption. Thus, addressing the issue of waste is an ongoing challenge for researchers around the world. This challenge derives from the fact that in many European countries, including Romania, the amount of waste generated is very high compared to current technologies for treatment, recycle or recovery. Therefore, the most convenient management methods remain storage and incineration. These methods generate significant amounts of hazardous pollutants with a significant impact on the environment and human health. The paper presents a series of results related to waste management obtained within National Research and Development Institute for Industrial Ecology – ECOIND Bucharest in the last 10 years. The paper is focused\u0000on four topics: analytical detection and monitoring of waste pollutants; environmental impact and risk assessments; harmonized waste classification and management; waste treatment and recovery technologies.\u0000The results obtained within these topics refer to optimal methods for detection and characterization of complex waste matrices, methods for assessing the impact on the environment generated by non-compliant landfills and risk prediction and reliable solutions and technologies for waste treatment and recovery. The topics approached represent a challenge for starting the implementation of circular economy concept\u0000promoted by EU and adopted by countries and governments all over the world.","PeriodicalId":21370,"journal":{"name":"Romanian Journal of Ecology & Environmental Chemistry","volume":"167 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88234731","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}

引用次数: 0

EVALUATING THE ECOTOXICITY OF DIFFERENT PHARMACEUTICALS USING ALIIVIBRIO FISCHERI BIOASSAYS 用菲氏弧菌生物测定法评价不同药物的生态毒性

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2020-07-31 DOI: 10.21698/rjeec.2020.107

L. Ionescu, S. Gheorghe, Daniel Mitru, C. Stoica, A. Banciu, Mădălina Mihalache, M. Nita-Lazar

{"title":"EVALUATING THE ECOTOXICITY OF DIFFERENT PHARMACEUTICALS USING ALIIVIBRIO FISCHERI BIOASSAYS","authors":"L. Ionescu, S. Gheorghe, Daniel Mitru, C. Stoica, A. Banciu, Mădălina Mihalache, M. Nita-Lazar","doi":"10.21698/rjeec.2020.107","DOIUrl":"https://doi.org/10.21698/rjeec.2020.107","url":null,"abstract":"An endless list of companies has produced a large amount of pharmaceutical compounds in a year-on-year growth trend. Due to the excessive consumption of these substances and the inappropriate disposal, the environment was contaminated, especially aquatic ecosystems, with quantities of pharmaceuticals (PHACs) so that they have affected the living organisms, leading to decreased biodiversity and ecological\u0000degradation. Many studies on PHACs environmental presence and toxic effects were performed, but unfortunately, no limit was establishing for discharging into the environment, especially into the aquatic systems. The aim of this study was to use the bioluminescence of Aliivibrio fischeri bacteria as an indicator of toxical effect of\u0000different PHACs in simulated marine mediums. The Microtox® bioassay is based on the PHACs inhibitory effect on the metabolism of bacteria which induced changes in their bacterial bioluminescence. The test organisms were exposed to analgesics and anti-inflammatories such as Diclofenac, Ketoprofen, Naproxen and Ibuprofen. The results showed that based on EC50 values, Naproxen had a very low toxicity but Diclofenac, Ketoprofen and Ibuprofen had a harmful effect on the aquatic organisms.","PeriodicalId":21370,"journal":{"name":"Romanian Journal of Ecology & Environmental Chemistry","volume":"81 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91454987","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}

引用次数: 1

MICROBIOLOGICAL EFFICIENCY TESTS OF THE COSMETIC TOOLS DISINFECTION PROCEDURES 化妆品工具消毒程序微生物效率试验

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2020-07-31 DOI: 10.21698/rjeec.2020.104

M. Vaideanu, D. Rădulescu, A. Banciu, D. Ionica, M. Nita-Lazar

{"title":"MICROBIOLOGICAL EFFICIENCY TESTS OF THE COSMETIC TOOLS DISINFECTION PROCEDURES","authors":"M. Vaideanu, D. Rădulescu, A. Banciu, D. Ionica, M. Nita-Lazar","doi":"10.21698/rjeec.2020.104","DOIUrl":"https://doi.org/10.21698/rjeec.2020.104","url":null,"abstract":"In the last decade, the cosmetic industry has experienced a massive development, but there have also been issues related to their influence on the health of the population. The application methods of the cosmetic products could trigger the appearance of the skin infectious, which raise the need for efficient disinfection processes of the cosmetic products. At the present, the economic operators in the field of cosmetics are guided by medical regulations, but unfortunately, there are not standardized procedure for the application and control of disinfection. The aim of this study was to determine an efficient procedure of disinfection for instruments used in the application of cosmetics such as the beauty blender. There were performed two different disinfection procedures, a chemical disinfection using 70% ethanol and a physical disinfection with UV radiation. The influence of foundation on disinfection procedures was also tested. A standardized S. aureus and a S. haemolyticus bacterium from a human abscess were tested and an antibiotic resistance pattern was also analysed. The disinfection efficiency tests showed that the ethanol solution was effective after 5 minutes, decreasing the S. haemolyticus bacterial density by 50% in the absence of foundation. In the presence of the foundation, this process was no longer efficient, foundation having a possible protection and nutritional role for bacteria. The radiation with UV at 265 nm showed a complete eradication of both bacterial strains after 1 minute, regardless of foundation presence or not. The antibiotic susceptibility tested showed that both strains had the natural penicillin resistance.","PeriodicalId":21370,"journal":{"name":"Romanian Journal of Ecology & Environmental Chemistry","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88438522","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}

引用次数: 0

MATRIX-TYPE CERTIFIED REFERENCE MATERIALS FOR QUALITY CONTROL OF METAL DETERMINATION FROM SOLID ENVIRONMENTAL AND VEGETATION SAMPLES 固体环境和植被样品中金属测定质量控制用基质型认证标准物质

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2020-07-31 DOI: 10.21698/rjeec.2020.103

Anda Tenea, G. Vasile, G. Paun, M. Mureșeanu

引用次数: 0

ADVANCED REMOVAL OF TRICHLOROETHYLENE FROM WATER BY SONOLYSIS, BIOCATALYTIC OXIDATION AND ULTRAFILTRATION 超声分解、生物催化氧化和超滤法深度去除水中三氯乙烯

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2020-07-31 DOI: 10.21698/rjeec.2020.105

M. Ștefănescu, I. Cristea, Gheorghe Batrinescu

引用次数: 0