International Conference of Recent Trends in Environmental Science and Engineering最新文献

{"title":"Variations Of Co2 Concentration Rates In The Abatement Of Air Pollutants From Mobile Sources Using A Meb Minimizer","authors":"Raúl Guerrero Torres, Mehrab Mehrva","doi":"10.11159/rtese23.160","DOIUrl":"https://doi.org/10.11159/rtese23.160","url":null,"abstract":"- Authorized sources, have stated, emphatically, that the most effective way to reduce CO 2 emissions is fossil-fuel consumption reduction. We have been confirming it from 2008, as a consequence of abating pollution controlling CO 2 emissions by magnetic action. In this paper, a balanced combustion using a MEB minimizer, is highlighted, from results. Sciences have revealed the stability of atmosphere gases proportions, for million years, with about 0.036% CO 2 whose levels underwent slow fluctuations below 300 ppm for more than 400,000 years. However, since 1750, fossil-fuels burning have increased its concentration in the atmosphere about 50%. Fossil-fuel derived CO 2 is a tiny component of the global carbon cycle, but it is cumulative because the natural carbon exchange cannot absorb all additional CO 2 . Therefore, the level of atmospheric CO 2 is building up, and in approximately 120 years, after pre-industrial era, has increased in 100ppm. This results in an average concentration increase rate of 𝟎.𝟖𝟑𝐩𝐩𝐦 𝐲𝐞𝐚𝐫 . A natural increase of 100ppm occurs in a period from 5000 to 20000 years, giving rise to maximum or minimum values of 𝟎.𝟎𝟐𝐩𝐩𝐦 𝐲𝐞𝐚𝐫 or 𝟎.𝟎𝟎𝟓𝐩𝐩𝐦 𝐲𝐞𝐚𝐫 , respectively. Consequently, the change rate of fossil-fuel derived CO2 is from 42 to 167 times greater than the natural one. Natural processes allow to restore the systems because they can change and after a relaxation time, equilibrate the new driving forces. When these are increasingly fast, the Earth systems cannot relax to equilibrate them, until sudden changes occur. Signs of those changes are frequent nowadays. Therefore, we cannot dismiss CO 2 concentrations rate. It is a critical variable to control. Consequently, in this paper, Cyclical CO 2 variations through the last 400000 years and Carbon cycle are detailly analyzed, and concentration rates reductions and its final steadiness, from results in two cars are shown, proving the MEB efficiency to control variations of CO 2 concentrations rate.","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122417279","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}

{"title":"Study Of Hematite Ore As A Source Of Iron For The Degradation Of Ether Amines Contained In Mining Wastewaters By The Fenton Reaction","authors":"Isabela Falconi Brandolis Alv, M. D. P. G. Baltazar, J. Tenório","doi":"10.11159/rtese23.159","DOIUrl":"https://doi.org/10.11159/rtese23.159","url":null,"abstract":". In 2015 and 2019, Brazil witnessed two accidents of rupture of iron mining dams (in the Brumadinho and Mariana districts), causing environmental and social damages. Among the principal causes of ruptures, are dams where the water volume accumulates in these systems. Water accumulated in tailings dams can be recuperated to reuse or discharged on rivers, but for this, it is necessary for previous treatment. The current methods developed to degrade ether amine flotation reactants consume additional reactants as Fe ions or yet can take 28 days to achieve satisfactory results as in biodegradation. The heterogeneous Fenton can be an alternative that uses the iron already available in mining wastewaters This study used Fenton heterogeneous to investigate the degradation of an ether amine flotation reactant present in wastewaters from iron mining operations. For this, Fe ore from the mining industry was used as the catalyst. The catalyst was characterized by x-ray diffraction (XRD), and Fenton tests were conducted to evaluate the influence of H 2 O 2 (0.5g.L -1 – 6.3g.L -1 ) and ore concentrations (0.7g.L -1 – 14g.L -1 ) on degradation. The influence of Fe leached on the solution was also evaluated. The monitorization of the reaction was done by total organic concentration (TOC), iron concentration with atomic absorption (AA), and ether amine by bromocresol green method. The results showed that Fe ore could be used as Fenton heterogeneous catalyst degrading 96% of ether amine in 240 minutes, and with this, the technique could be explored to be applied to real wastewater treatments in mining operations.","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122744054","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}

{"title":"Microstructure And Electrochemical Behaviour Of Mg Or Sr Doped Ilmenite (Fetio3) For Artificial Photo-synthesis","authors":"Wendy J. Vargas-Palencia, Diana S. Vergel-Gordillo, Diana Marcela Cañas Martínez, J. Vazquez-Samperio, J. Henao-Martínez, J. Pedraza-Avella","doi":"10.11159/rtese23.107","DOIUrl":"https://doi.org/10.11159/rtese23.107","url":null,"abstract":"Extended Abstract With the aim of displacing the conduction band of mineral ilmenite (FeTiO 3 ), and thus, enhancing its performance towards reductive reactions for artificial photosynthesis, samples of ilmenite were doped with either Mg or Sr by High Energy Ball Milling [1]. Analyses of the X-ray Diffraction patterns were carried out for all the obtained samples. Furthermore, the electrochemical behaviour of the samples was studied to establish the effects of the","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127337597","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}

{"title":"Chlorine Demand In Bicarbonated And Ferruginous Hot Springs In The Cundinamarca Region, Colombia","authors":"Yuly Sánchez, M. Mehrvar, L. McCarthy, Edgar Quiñones Bolaños, L. Cheu, Alexander Reuβ, Jairo Romero","doi":"10.11159/rtese23.165","DOIUrl":"https://doi.org/10.11159/rtese23.165","url":null,"abstract":"Canada and Germany apply the same microbial and physical-chemical requirements to hot springs as for swimming pools in accordance with the Alberta and British Columbia Government Public Swimming Pool Regulations and the German DIN 19643 Standard, where they require the addition of chlorine to their waters. Chlorine is not added to hot springs in Colombia for the disinfection of their waters, only a constant replacement of the water is carried out, which does not guarantee the microbiological quality of hot springs. There has been little research on the demand for chlorine in hot springs in Colombia because by requiring water of natural origin, the quality of their waters is not regulated. In our study, laboratory tests were carried out with bicarbonated and ferruginous hot springs in the Cundinamarca region of Colombia, to determine the chlorine demand. The tests were carried out as established by Standard Methods 2350 with three replicates of each test for a contact time of 10 minutes and a chlorine concentration of 100.47 mg/L Cl 2 . For the bicarbonated hot spring, tests were carried out with chlorine doses of 0.5 to 10.0 mg/L Cl 2 with intervals of 1.0 mg/L Cl 2 , where the typical chlorine demand curve was obtained, with a chlorine demand of 5 mg/L Cl 2 . In the case of the ferruginous hot spring, the dose intervals were varied and additional tests were obtained with concentrations above 12 mg/L Cl 2 where the breakpoint chlorination was not obtained to determine the chlorine demand. Only combined chlorine was obtained where water reacts with organic materials and metals and disinfection does not occur. In Germany, the oxidation of organic matter, forming disinfection-by-products (DBPs), is not desired. In order to achieve this, the main effort is attributed to the filtration of the organic matter before addition of chlorine, thus largely avoiding the formation of DBPs. For this reason, it is important in future work to investigate how disinfection with chemical products could be carried out in this type of ferruginous hot springs to determine the dose of chlorine sufficient to satisfy the demand for chlorine and maintain a residual chlorine to eliminate enough pathogenic microorganisms.","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122245754","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}

{"title":"Enhancement of a Bench Scale Parallel Plate Photoelectrochemical Reactor for Hydrogen Production from Sulphured Water","authors":"M. I. Carreño-Lizcano, Andrés D López-Contreras, Jeferson O. Ruiz–Lizarazo, J. Pedraza-Avella, M. E. Niño-Gómez","doi":"10.11159/rtese23.106","DOIUrl":"https://doi.org/10.11159/rtese23.106","url":null,"abstract":"The search for suitable photoelectrochemical reactor designs has been broadened recently due to the application of this technology to the treatment of wastewater. The configurations that have been proposed for this purpose range from parallel plates, fluidized bed, tubular and fiber optic type, among others[1], [2].Carver et al . [3] determined that the configurations that met the main criteria for the design of this type of reactor are tubular and parallel plate configurations. This paper presents the modification of a parallel plate photoelectrochemical reactor (UIS-GIMBA 1.0) and its evaluation in hydrogen production from sulphured water. For the different tests carried out, the reactors were coupled to a bench scale flow system to evaluate their performance in the production of hydrogen from water doped with sodium sulfide and sodium sulfite, driven the reactions to obtain a higher amount of hydrogen. Sulfide concentration and hydrogen production were monitored for four hours of operation, in order to correlate oxidation and reduction processes within the reaction system. The phoanodes used for this test were prepared to obtain a heterojunction of Bi 2 O 3","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114148694","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}

{"title":"Biodegradability Improvement of Water-Soluble-Polymers in Wastewater in a Continuous UV/H2 O2 Photoreactor","authors":"Zahra Parsa, M. Mehrvar, R. Dhib","doi":"10.11159/rtese23.116","DOIUrl":"https://doi.org/10.11159/rtese23.116","url":null,"abstract":"Water-soluble polymers have a diverse range of applications from industrial raw materials to household product ingredients such as detergent capsules. However, the ubiquitous presence of these chemicals in both industrial and municipal wastewater streams is of concern. Although present in high and low concentrations in industrial and municipal wastewaters, respectively, these polymers are not easily biodegradable mainly due to their complex and lengthy structures. Moreover, their high solubility in water renders them invisible and often overlooked [1]. Consequently, their persistence and potential accumulation in the environment could lead to long-term environmental risks. Thus, a better understanding of the environmental fate of non-biodegradable water-soluble polymers is essential for the development of effective management strategies to minimize their impact on the environment","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121793724","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}

{"title":"Digital Mapping Of Invasive Acacia Mangium Willd. Trees Along Telisai-Lumut Highway Along The Andulau Forest Reserve","authors":"Izzah Amal, A. A. Shah, Moad Idrissi, A. Asyhari, Muhd Firdaus Zaini, Muhd Afnan Alizan, Daphne Lai, F. Slik","doi":"10.11159/rtese23.144","DOIUrl":"https://doi.org/10.11159/rtese23.144","url":null,"abstract":": Invasive alien Acacia trees have become a serious environmental problem in Brunei Darussalam, spreading into the vulnerable heath and mixed dipterocarp forest ecosystem where it has started replacing the native flora and contributing to forest fire. In this work, we study the spread of Acacia trees by analyzing images taken by drones along a newly developed highway within the vicinity of Andulau Forest Reserve in Brunei Darussalam. Based on the analysis, we aim to understand the Acacia spread and its habitat preference, which will be a critical factor in planning the future roadmap to maintain a sustainable and healthy forest ecosystem, and safety from potential forest fires. The Unmanned Aerial Vehicles (UAVs) were utilized to capture high-resolution images along the Telisai-Lumut highway and were subsequently analyzed images using ArcGIS software, to map and study the Acacia ’s distribution and habitat preferences, which will aid in understanding of Acacia ’s rapid dispersion. Our preliminary results show highest Acacia density and numbers closer to the highway. The barren loose sandy soil combined with the open terrain limits local forest tree growth but seems to provide good habitat for Acacia trees. Our results suggest that the highway provides an important dispersal opportunity for Acacia trees, bringing them in direct proximity of an undisturbed forest reserve. This may increase the risk of spread of this species into the forest, and importantly, given the fire proneness of Acacia , may lead to wildfires that threaten the neighbouring forest reserve. Keeping vegetation short and removing Acacia ’s close to the highway may mitigate these risks. Efforts such as spreading awareness on Acacia ’s invasiveness, identification and removal of Acacia trees, habitat restoration projects and meticulous evaluation for any introduced species should be done.","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124697634","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}

{"title":"A Study on Artificial Intelligence-Based Sand Filtration Backwash Cycle Determination Method for Improving Sand Filtration Process Maintenance Performance","authors":"Seungjae Yeon, Jusuk An, C. Oh, H. Oh","doi":"10.11159/rtese23.161","DOIUrl":"https://doi.org/10.11159/rtese23.161","url":null,"abstract":"Extended Abstract Increased workload and aging of water treatment maintenance personnel can hinder the supply of quality drinking water and threaten national water security. At the present time, in the age of low birth rate and aging population, and the era of the 4th industrial revolution, the artificial intelligence-based water treatment facility operation system is evaluated as a future technology that can continuously produce water necessary for people's lives. The artificial intelligence-based water treatment facility operation system is expected to increase the economic feasibility and production efficiency of water treatment facility operations by applying it to ICT/IOT/CPS-based smart water treatment facilities. The sand filtration process constituting the water treatment facility can remove aggregated suspended matter through the gaps between filter media, and periodic backwashing must be performed to maintain performance. The water treatment facility operates backwashing based on the water level according to the rise in the water level due to clogging of the filter media. However, since the increase in the water level is measured after the filter media has already been clogged, it is difficult to assert that the performance of the sand filter facility is restored to close to 100% as a result of backwashing. This can increase the workload of facility maintenance personnel by advancing filter media replacement cycles. Therefore, in this study, a","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125405954","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}

{"title":"Macrolitter: Riverine Plastic Pollution at the Mouth of Ishëm River (Albania)","authors":"L. Gjyli, J. Kolitari, F. Miri","doi":"10.11159/rtese23.171","DOIUrl":"https://doi.org/10.11159/rtese23.171","url":null,"abstract":"","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131366260","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}

{"title":"Kinetic modelling of a Tubular Photoelectrochemical Reactor for Oxidation of Anionic Surfactant present in Synthetic Oilfield-Produced Wastewater","authors":"María I. Jaramillo Gutiérrez, Julio A. Pedraza Avella, E. Rivero, Martín. Rogelio Cruz Díaz","doi":"10.11159/rtese23.117","DOIUrl":"https://doi.org/10.11159/rtese23.117","url":null,"abstract":"","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132832750","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}