Romanian Journal of Ecology & Environmental Chemistry最新文献_第3页

Statistical evaluation of mineral water from Valcea County area through quality indices 用质量指标对瓦尔恰县地区矿泉水进行统计评价

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2021-06-25 DOI: 10.21698/rjeec.2021.109

M. Draghici, L. Popescu, Narcis Claudiu Spinu, Cǎtǎlin Manea, G. Serban

{"title":"Statistical evaluation of mineral water from Valcea County area through quality indices","authors":"M. Draghici, L. Popescu, Narcis Claudiu Spinu, Cǎtǎlin Manea, G. Serban","doi":"10.21698/rjeec.2021.109","DOIUrl":"https://doi.org/10.21698/rjeec.2021.109","url":null,"abstract":"Significant global consumption of mineral water is fueled by perceived therapeutic and medicinal qualities, cultural habits and taste. In Valcea County are several resorts with such mineral springs, which can have multiple benefits for human health. For this reason, it is important to investigate the level of their pollution with heavy metals. The aim of this study was to detect the level of heavy metals present in the studied mineral waters, to evaluate the analytical results using environmental statistical indices, and to compare the results with the legislation in force. Thus, mineral water samples were collected from three resorts of Valcea County (Baile Olanesti, Calimanesti-Caciulata and Baile Govora). The analyzed metals (Cd, Cr, Fe, Mn, Ni, Pb and Zn) were determined with the ICP-EOS technique and the obtained results were compared to enforce legislation. Statistical analyses were applied and two environmental statistical indices, namely the metal distribution coefficient (kd) and the total environmental risk index (IER) were evaluated. The calculated values for the total environmental risk index were below 0 (IER ≤ 0), which indicates that none of the studied water samples pose a risk for the environment. The low values of the distribution coefficient indicate a low ability to bind the metal in particles and therefore, insignificant toxicity. The distribution coefficient calculated for zinc (1.12 L/kg) and lead (0.68 L/kg) in Baile Olanesti indicates a high capacity of the metals to bind in particles, compared to other metals.","PeriodicalId":21370,"journal":{"name":"Romanian Journal of Ecology & Environmental Chemistry","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87510410","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

Removal of crystal violet from aqueous solutions using an aerobic granular sludge system 用好氧颗粒污泥系统从水溶液中去除结晶紫

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2021-06-25 DOI: 10.21698/rjeec.2021.107

C. Bumbac, E. Manea, O. Tiron

引用次数: 0

Disinfection by-products in drinking water distribution system of Bucharest City 布加勒斯特市饮用水配水系统消毒副产物

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2021-06-25 DOI: 10.21698/rjeec.2021.102

I. Paun, F. Chiriac, V. Iancu, F. Pirvu, M. Niculescu, Nicoleta Vasilache

引用次数: 2

Neonicotinoid insecticides as emerging contaminants in agricultural soil 新烟碱类杀虫剂是农业土壤中的新污染物

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2021-06-25 DOI: 10.21698/rjeec.2021.105

V. Iancu, R. Scutariu, Gabriel Radu Lucian, M. Niculescu, C. Dinu, I. Paun, F. Chiriac

引用次数: 0

Assessment of soil quality in the area of casting parts waste storage specific to cast iron activities 铸铁活动专用铸件废弃物贮存区土壤质量评价

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2021-06-25 DOI: 10.21698/rjeec.2021.110

B. Stanescu, A. Cuciureanu

{"title":"Assessment of soil quality in the area of casting parts waste storage specific to cast iron activities","authors":"B. Stanescu, A. Cuciureanu","doi":"10.21698/rjeec.2021.110","DOIUrl":"https://doi.org/10.21698/rjeec.2021.110","url":null,"abstract":"The purpose of this paper was to present an environmental assessment specific to a case study with reference to the storage of sand waste from a cast iron foundry, a factory with a long period of operation located in Transylvania, Romania. The environmental assessment started from the need to achieve compliant conditions for long-term storage of waste specific to cast iron casting parts activities. The activities performed in the project were carried out in stages and in parallel with the activities of sand waste valorification from the non-compliant deposit. The collaboration of the factory owner with the local environmental authorities was able to effectively materialize the objectives of the soil evaluation and facilitated the obtaining conditions for new compliant deposit construction. The evaluation of the soil quality was performed in areas where the deposited material, respectively the sand waste from the casting of the cast iron was already valorificated and, in that case, access to the soil layer was facilitated. Thirty soil samples and a control sample were analyzed and interpretation of the results was performed in corelation to specific legislation. The conclusions of the study were provided to the beneficiary and, also to the environmental authorities in order to authorize future activities (capitalization of the remaining waste, arrangement of a new landfill).","PeriodicalId":21370,"journal":{"name":"Romanian Journal of Ecology & Environmental Chemistry","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83909513","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

The effects on human health of non-metallic, semimetals and heavy metals compounds generated by mining activities along the Serbian-Romanian border 塞尔维亚-罗马尼亚边境采矿活动产生的非金属、半金属和重金属化合物对人体健康的影响

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2021-06-25 DOI: 10.21698/rjeec.2021.108

Bianca-Vanesa Boros, D. Roman, V. Ostafe, R. Marković, V. Gardić, Z. Stevanović, A. Isvoran

{"title":"The effects on human health of non-metallic, semimetals and heavy metals compounds generated by mining activities along the Serbian-Romanian border","authors":"Bianca-Vanesa Boros, D. Roman, V. Ostafe, R. Marković, V. Gardić, Z. Stevanović, A. Isvoran","doi":"10.21698/rjeec.2021.108","DOIUrl":"https://doi.org/10.21698/rjeec.2021.108","url":null,"abstract":"This study makes an overview of the chemical pollutants, such as Be and its compounds, S and its compounds, P and its compounds, chlorine and chlorides, Na2O, K2O, Ti2O, CaO, MgO, CuO, SiO2, Al2O3, Fe2O3, Cr2O3, As2O3, that were registered in the mining operations areas in the cross-border region of Romania and Serbia. In addition, their possible effects on human health were discussed. Among the oxides, SiO2, Al2O3, Fe2O3 are the most abundant. From all these pollutants, the most health effects were registered for the compounds of P, S and Ca and the lowest number of health effects was recorded for chlorine. Among the human health effects that have been observed for these compounds, the most common are related to skin, eye and respiratory irritations in the case of acute exposure, but chronic exposure may lead to diseases affecting all the human organs. This information is important for population living in this area, due to air, water and soil pollution, but especially for professional exposure as workers in the mining operations are exposed to higher concentrations of pollutants and for long time.","PeriodicalId":21370,"journal":{"name":"Romanian Journal of Ecology & Environmental Chemistry","volume":"92 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84121707","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

Preliminary evaluation of the role of activated carbon in soil/water remediation 活性炭在土壤/水修复中的作用初步评价

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2021-06-25 DOI: 10.21698/rjeec.2021.101

V. Mukhin, Nikolai Koroleov, V. Mednyak, T. Lupascu, Elena Culighin

引用次数: 0

Application of ultrasonic disintegration to waste activated sludge for increasingof biogas production by anaerobic digestion 超声波降解废活性污泥提高厌氧消化产气量的应用

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2020-10-14 DOI: 10.21698/rjeec.2020.202

I. Patroescu, R. Dinu, M. Ștefănescu, V. Badescu, N. Cristea, C. Martin

{"title":"Application of ultrasonic disintegration to waste activated sludge for increasing\u0000of biogas production by anaerobic digestion","authors":"I. Patroescu, R. Dinu, M. Ștefănescu, V. Badescu, N. Cristea, C. Martin","doi":"10.21698/rjeec.2020.202","DOIUrl":"https://doi.org/10.21698/rjeec.2020.202","url":null,"abstract":"The municipal wastewater treatment is the source of significant amounts of primary and secondary sludge which is under the present legislation referring to quality and management aspects. It is estimated that a half of wastewater treatment plant costs are due to the sludge management. Anaerobically sludge stabilization, capitalization as energy source, in order to diminish the costs and sludge volume decreasing, are the aims of the main operational steps of sludge treatment, as a part of wastewater treatment plant. The improvement of sludge anaerobically stabilization process must be possible by acting in the rate limiting step - hydrolysis in order to rise the organic carbon solubilization. The increase of soluble carbon can be possible by adding a pretreatment step of waste biological sludge, ultrasonic disintegration being one option. This paper emphasized the experimental results regarding anaerobically stabilization of the thickened waste biological sludge by ultrasonication taking into account the results of blank test, without ultrasonication. Experimental tests show that ultrasonic disintegration of the sludge having initial dried substances content (d.w) 2.72% and soluble organic load COD of 598 mg O2/L led to soluble COD concentration of 4950-6710 mg O2/L after sonication with specific energy in the range of 3.06 - 14.24 kWh/kg d.w. Anaerobically stabilization during 25 test days at 36 0C of the mixture 40% disintegrated biological sludge and 60% digested sludge (inoculum) mixture led to 30-38.6% increase of biogas production comparing with parallel test with non-sonicated sludge.","PeriodicalId":21370,"journal":{"name":"Romanian Journal of Ecology & Environmental Chemistry","volume":"120 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87759165","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

The influence of agricultural and industrial activities on the quality of waterfrom public wells located in Ramnicu Valcea County 农业和工业活动对瓦尔恰县公共水井水质的影响

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2020-10-14 DOI: 10.21698/rjeec.2020.205

Claudiu Spinu, I. Nicolescu, Cǎtǎlin Manea, M. Draghici

引用次数: 0

Analytical methods for the determination of Cr6+ from fixed source emissions

Romanian Journal of Ecology & Environmental Chemistry Pub Date : 2020-10-14 DOI: 10.21698/rjeec.2020.223

M. Petrescu, E. Bucur, V. Danciulescu, A. Cozea, Claudia Mihaela Borcescu, M. Bratu, G. Tanase

引用次数: 0