International Conference of Recent Trends in Environmental Science and Engineering最新文献_第2页

Characterization and Field Application Assessment Of Prosopis Cineraria (L.) For Fluoride Sequestration: A Preliminary Investigation 藜麦(Prosopis Cineraria)的鉴定及田间应用评价氟的封存:初步调查

International Conference of Recent Trends in Environmental Science and Engineering Pub Date : 2023-06-01 DOI: 10.11159/rtese23.142

Soumya Kar, Rajiv Gupta, Zhi Chen

引用次数: 0

A Study On The TDS Concentration Difference And Characteristics Of Desorption Using MCDI Process And Circulation Process MCDI法和循环法解吸TDS浓度差异及特性研究

International Conference of Recent Trends in Environmental Science and Engineering Pub Date : 2023-06-01 DOI: 10.11159/rtese23.137

C. Oh, Jusuk An, Seungjae Yeon, H. Oh

{"title":"A Study On The TDS Concentration Difference And Characteristics Of Desorption Using MCDI Process And Circulation Process","authors":"C. Oh, Jusuk An, Seungjae Yeon, H. Oh","doi":"10.11159/rtese23.137","DOIUrl":"https://doi.org/10.11159/rtese23.137","url":null,"abstract":"Extended Abstract Removing ions present in water is one of the important processes in water treatment, and this is called desalination [1]. Desalination technologies include evaporation, ion exchange, and reverse osmosis. However, this technology has problems such as high energy consumption during operation and periodic replacement due to membrane contamination. As a desalination technology that can solve these problems, research on capacitive deionization technology is being conducted, and recently, membrane capacitive deionization technology combining an ion exchange membrane and an electrode is being studied. Membrane capacitive desalination technology is easy to regenerate and maintain by selectively passing ions through adsorption and desorption. However, since adsorption and desorption require the same raw water, this process has a problem in that it must be continuously supplied [2]. Therefore, in this study, a process to increase the recovery rate was developed and the TDS concentration, characteristics of desorption using MCDI process and circulation process were evaluated. The MCDI module used in this study consists of one unit, and aqueous solutions of 100 mg/L and 300 mg/L were used as raw water. A voltage of 1.2 V was applied to each cell, and adsorption and desorption","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"99 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":"121179515","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

Climate Change Impacts on Global Food Security 气候变化对全球粮食安全的影响

International Conference of Recent Trends in Environmental Science and Engineering Pub Date : 2023-06-01 DOI: 10.11159/rtese23.163

Charles Lee

{"title":"Climate Change Impacts on Global Food Security","authors":"Charles Lee","doi":"10.11159/rtese23.163","DOIUrl":"https://doi.org/10.11159/rtese23.163","url":null,"abstract":"Extended Abstract Climate change is an existential threat to humanity and our fragile ecosystems. Climate change and poor management practices threaten the world’s farmlands and food security. In the 2019 Intergovernmental Panel on Climate Change report [1], “food security will be increasingly affected by future climate change through yield declines (significant in the tropics), increased prices, reduced nutrient quality, and supply chain disruptions”. This paper will address four pillars of food security: Availability; Access; Utilisation; and Stability. Climate change impacts on food availability via the production of food and its storage, processing, distribution, and exchange. For example, from 1981 to 2010, climate change has decreased global mean yields of maize, wheat and soybeans by 4.1, 1.8 and 4.5%, respectively [2]. In New South Wales (Australia), high temperature and low rainfall episodes during the reproduction stage of crop growth were found to have negative effects on wheat yields. Details of climate change impacts on the other 3 pillars, and adaptation measures will be further discussed. In Singapore, due to climate change and geopolitical risks, we have set a “30 by 30” goal to be able to produce 30% of our nutritional needs by 2030 [3]. This is an extremely ambitious goal given that only <5% of food is currently produced locally in land scarce Singapore. This paper will describe our long term food security plans such as food innovation technologies (plant and cell-based proteins; vertical farms); grow more with less; and exciting agri-food tech case studies.","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"12 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":"114271358","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

Dynamic Sensor Nodes Distribution with Coordinated Autonomous Vehicles for Environment Pollution Monitoring and Modeling 基于协调自动驾驶车辆的环境污染监测与建模动态传感器节点分布

International Conference of Recent Trends in Environmental Science and Engineering Pub Date : 2023-06-01 DOI: 10.11159/rtese23.122

Alfa Budiman, Wenbo Wu, Edisson A. Naula-Duchi, Patricia Portillo Jiménez, Hanifeh Imanian, P. Payeur, Luis E. GarzaCastañón, A. Mohammadian, E. Lanteigne

{"title":"Dynamic Sensor Nodes Distribution with Coordinated Autonomous Vehicles for Environment Pollution Monitoring and Modeling","authors":"Alfa Budiman, Wenbo Wu, Edisson A. Naula-Duchi, Patricia Portillo Jiménez, Hanifeh Imanian, P. Payeur, Luis E. GarzaCastañón, A. Mohammadian, E. Lanteigne","doi":"10.11159/rtese23.122","DOIUrl":"https://doi.org/10.11159/rtese23.122","url":null,"abstract":"– This research aims toward collecting air and water samples over opportunistically selected locations to monitor pollutants distribution. To support precise sensor nodes deployment over a variety of terrains and changing conditions, not only appropriate sensor devices must be designed, but means for deployment must also be carefully studied, developed, and implemented. This paper investigates methodologies to efficiently distribute environment sensor nodes while maximizing space coverage, minimizing acquisition time, and leveraging the benefits of autonomous robotic agents to carry environmental sensors to strategic locations. The research contributes to fill existing gaps in local and global sensor networks for environment pollution monitoring by developing innovative technologies to dynamically deploy sensor nodes using mobile unmanned ground, air and water vehicles. The dispatch of dynamic sensor nodes on autonomous robotic agents to collect measurements on pollution can efficiently cover territories of different size, automatically detect areas where pollution varies significantly or reaches concerning levels, and strategically concentrate data acquisition over those regions to support the formation of more accurate data-centric pollutants dispersion models.","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"21 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120874838","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

On The Importance of Airborne Nano-Size Particles: Air Quality, Health, Sustainability, and Climate Change 关于空气中纳米颗粒的重要性:空气质量、健康、可持续性和气候变化

International Conference of Recent Trends in Environmental Science and Engineering Pub Date : 2023-06-01 DOI: 10.11159/rtese23.002

P. Ariya

{"title":"On The Importance of Airborne Nano-Size Particles: Air Quality, Health, Sustainability, and Climate Change","authors":"P. Ariya","doi":"10.11159/rtese23.002","DOIUrl":"https://doi.org/10.11159/rtese23.002","url":null,"abstract":"Particles, nano, micro and macro-particles, are ubiquitous on Earth. They are chemically, physically, and biologically diverse. They are naturally produced or increasingly through numerous anthropogenic activities, namely medicine-health, chemical industries, materials, construction, transport, communication, aerospace, agriculture, and energy sectors. Air pollution, particularly airborne nano-size particles, is identified as the cause of ~ six million people per year worldwide (WHO, 2020). Aerosols are also significant in climate change and Earth’s energy processes. They play a role in radiation, ice nucleation and precipitation events (IPCC, 2018). The identified gap of knowledge by both the IPCC and the WHO are converging, and it becomes clear that they are related to the physicochemical characteristics of particles. Air and water are in motion, as are the particles in air and water. We should be able to observe, track, characterize and remediate in-situ and real-time in 4D (3 dimensions and time). In this talk, we provide an overview of the recent advances in this lab to help to fill the gap identified by the IPCC and the WHO in the age of climate change and COVID-19. We discuss the development of novel promising technologies for fast in-situ and real-time observation of aerosols and waterborne viruses and physicochemical transformations and ice nucleation of anthropogenic emerging nanoparticles (e.g., nano-plastics in air/water). We explore some links between fundamental studies that provide advances in designing zero-net energy and recyclable technology using natural particles in air and soil to remove gaseous and particulate matter in the hydrosphere, cryosphere, and atmosphere.","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"6 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":"114726714","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

Titania nanotubes modified with plasmonic gold nanorods for photocatalytic degradation of organic compound. Kinetics Parameters and Intermediate Products Study 等离子体金纳米棒修饰二氧化钛纳米管光催化降解有机化合物。动力学参数和中间产物研究

International Conference of Recent Trends in Environmental Science and Engineering Pub Date : 2023-06-01 DOI: 10.11159/rtese23.101

E. Pino, G. Cardenas, P. Barrias, J. Pizarro

引用次数: 0

The Impact Of Residual Flocculant On Flotation Performance Of Platinum Group Metal Ores 残留絮凝剂对铂族金属矿石浮选性能的影响

International Conference of Recent Trends in Environmental Science and Engineering Pub Date : 2023-06-01 DOI: 10.11159/rtese23.134

Lucky Tloubatla, W. Nheta, M. Kalenga

{"title":"The Impact Of Residual Flocculant On Flotation Performance Of Platinum Group Metal Ores","authors":"Lucky Tloubatla, W. Nheta, M. Kalenga","doi":"10.11159/rtese23.134","DOIUrl":"https://doi.org/10.11159/rtese23.134","url":null,"abstract":"– The recycling of process water in the mineral processing plants is of paramount importance due to scarcity of fresh water. However, it has many challenges specifically on flotation performance. This research work focused on the impact of residual flocculant on flotation performance of Platinum group metal (PGMs) ores in terms of recovery. The impact of residual flocculant on PGMs recovery using recycled process water from a chrome processing rougher plant was investigated. Water samples from the flotation circuit and chrome plant were analysed for elemental composition, total dissolved solids (TDS), electrical conductivity (EC), pH, turbidity and total hardness. The effect of residual flocculant on settling was determined using settling test. The impact of high concentration of residual flocculant on PGMs ore in terms of recovery were investigated by comparing flotation circuit stream and chrome plant stream using Denver flotation cell. Results revealed that the chrome plant stream contained a higher concentration of ions compared to the was high flotation circuit stream. The chrome plant water had a pH of 8.41, TDS of 1331mg/l, EC of 217 mS/m, Turbidity of 2.42NTU and total hardness of 476 mg/l whilst the flotation circuit water had a pH of 7,73, EC of 87.3, TDS of 461, Turbidity of 1.025 NTU and total hardness of 224,7 mg/l. The recycled process water showed high settling rate compared to fresh water suggesting the existence of residual flocculant in the recycled process water. The flotation circuit pulp stream always showed higher recoveries of PGMs [70-78%] compared to CRD (54 – 62%).","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"34 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":"116641818","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

An Investigation into the Effects of Water Quality on Coal Flotation Performance 水质对煤浮选性能影响的研究

International Conference of Recent Trends in Environmental Science and Engineering Pub Date : 2023-06-01 DOI: 10.11159/rtese23.133

Nompumelelo Nkosi, W. Nheta

{"title":"An Investigation into the Effects of Water Quality on Coal Flotation Performance","authors":"Nompumelelo Nkosi, W. Nheta","doi":"10.11159/rtese23.133","DOIUrl":"https://doi.org/10.11159/rtese23.133","url":null,"abstract":"- In this paper, the effects of water quality on the flotation performance of bituminous coal were investigated focussing on dissolved ions. Water was synthesised to simulate process water from coal processing plants. To evaluate the effects of these ions, a series of 32 flotations tests were conducted using the synthesized process water. The ions investigated were Ca 2+ , Mg 2+ , Cl - , SO 42, Fe 2+ , NO 3-and the pH. Analysis of results from the laboratory tests revealed that the ion that has the most effect on the flotation performance is Cl. Higher concentrations of Cl - (160 to 200 mg/l) increases the % combustible recovery. The pH was observed to be directly proportional to the % combustible recovery while Ca 2+ and Fe 2+ were observed to be inversely proportional. To achieve high % combustible recoveries, the optimum conditions are 24 mg/l Ca 2+ , 39 mg/l Mg 2+ , 200 mg/l Cl - , 0 mg/l SO 42, 0.06 mg/l Fe 2+ , 40 mg/l NO 3-, and a pH of 7.92. The most significant variable that affects the % combustible recovery is the pH, followed by Cl - , NO 3-, Mg 2+ , SO 42, Fe 2+ , Ca 2+ concentrations in that order.","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":"115426697","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

Coagulation and Filtration Combined to Treat Paint FactoryWastewater: Empirical Insights from Uganda 混凝与过滤联合处理涂料废水:来自乌干达的经验见解

International Conference of Recent Trends in Environmental Science and Engineering Pub Date : 2023-06-01 DOI: 10.11159/rtese23.128

Gloria Linda Ndagire, R. B. Kalengyo

{"title":"Coagulation and Filtration Combined to Treat Paint Factory\u0000Wastewater: Empirical Insights from Uganda","authors":"Gloria Linda Ndagire, R. B. Kalengyo","doi":"10.11159/rtese23.128","DOIUrl":"https://doi.org/10.11159/rtese23.128","url":null,"abstract":"- Treatment of wastewater from different sources such as agricultural and industrial facilities is one of the world’s challenges to improving people’s health, livelihoods, and well-being, especially in developing nations like Uganda. The main purpose of this research was to investigate the quality and quantity of the wastewater from a case study factory in Uganda and design a treatment system that could treat it to dischargeable standards. Sampling of the wastewater was carried out at the factory; its quality and quantity were determined by conducting both in situ and laboratory tests. The study provides an engineered design of the proposed treatment system which consists of a mixing unit, sedimentation tank, and filtration unit. I 1 utilized coagulation/flocculation with alum in the mixing unit and a sedimentation tank to enable the settling of solids. In the filtration unit, I employed commercial granular activated carbon to adsorb contaminants, and placed sand below it to capture other suspended solids that were left after sedimentation. The findings of my research suggest that the coagulation/flocculation and filtration process combination is effective in treating paint wastewater. I varied the contaminant concentration to examine the performance of the integrated system at different effluent qualities. For initial contaminant concentration of Chemical Oxygen Demand (COD) of 6,200mg/L, Biological Oxygen Demand (BOD) of 489 mg/L, colour of 39,000 mg/L, Total Phosphorus of 2,453 mg/L, Total Nitrogen (TN) of 1,800 mg/L. The removal reached up to 98.6% of COD, 91.4% of BOD, 99.6% of colour, 99.2% of TN, and 99.","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":"124667359","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

Sustainable and Optimized Black Start in Microgrids 微电网的可持续优化黑启动

International Conference of Recent Trends in Environmental Science and Engineering Pub Date : 2023-06-01 DOI: 10.11159/rtese23.132

Maria Fotopoulou, D. Rakopoulos

{"title":"Sustainable and Optimized Black Start in Microgrids","authors":"Maria Fotopoulou, D. Rakopoulos","doi":"10.11159/rtese23.132","DOIUrl":"https://doi.org/10.11159/rtese23.132","url":null,"abstract":"– The modern energy transition has resulted in the development of sustainable Microgrids (MGs) that utilize Renewable Energy Sources (RES) in order to cover the demand in an environmental-friendly way. One of the main benefits of a MG is the ability to operate independently and provide flexibility services to the main grid’s operator. Perhaps one of the most desirable services that a MG can provide is the black start, which is required when the overall system faces a blackout. Up until recently, the main idea of the black start was to restart the operation of the MG utilizing fuel-based Distributed Energy Resources (DER) such as diesel generators. However, there are other controllable units that can be utilized for this purpose, such as Battery Energy Storage Systems (BESS). Therefore, provided that the BESS are charged with renewable energy, it is possible to have a totally sustainable black start. The purpose of this paper is to present an optimization algorithm that assists the MG’s operator in making key-decisions related to black start in MGs equipped with RES and BESS. The developed Mixed-Integer Linear Programming (MILP) optimizer is developed in Python with the use of Pyomo and the decision variables are the energy that needs to be discharged from (or charged to) each BESS and the curtailment of RES production, if required. The algorithm is tested on a MG that contains two BESS (one main and one secondary) and two sorts of RES, i.e., Photovoltaics (PV) and a Wind Generator (WG). The results highlight the sustainability and practicability of the proposed solution, even under extreme conditions.","PeriodicalId":308370,"journal":{"name":"International Conference of Recent Trends in Environmental Science and Engineering","volume":"23 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":"128462171","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