International journal of environmental science and development最新文献_第9页

Characterization and Profiling of Industrial Wastewater Toxicity in Kuwait 科威特工业废水毒性的表征和分析

International journal of environmental science and development Pub Date : 2022-01-01 DOI: 10.18178/ijesd.2022.13.2.1369

M. E. Ahmed, A. Al-haddad, S. Al-Dufaileej

引用次数: 1

Integrating Historic Mine Hazard Scoring for Comprehensive Assessment of Abandoned Mine Rehabilitation in the Philippines 菲律宾废弃矿山修复综合评价的历史矿井危害评分方法

International journal of environmental science and development Pub Date : 2022-01-01 DOI: 10.18178/ijesd.2022.13.4.1380

Alexandria M. Tanciongco, R. N. Quierrez, J. Samaniego, C. R. Gibaga, M. Montano

{"title":"Integrating Historic Mine Hazard Scoring for Comprehensive Assessment of Abandoned Mine Rehabilitation in the Philippines","authors":"Alexandria M. Tanciongco, R. N. Quierrez, J. Samaniego, C. R. Gibaga, M. Montano","doi":"10.18178/ijesd.2022.13.4.1380","DOIUrl":"https://doi.org/10.18178/ijesd.2022.13.4.1380","url":null,"abstract":"Abandoned mines remain a social, environmental, and health-risk problem for the Philippines. These abandoned sites are generally characterized by water-filled pit lakes surrounded with disturbed and exposed soils and sediments containing elevated values of heavy metals and other environmental contaminants. Previous studies with abandoned mines in the Philippines have initiated the use of integrated methods for the assessment of existing abandoned mine site conditions as a tool for decision-making. To further provide a numerical basis for rehabilitation prioritization, this paper aimed to utilize the modified Historic Mine Site Scoring System (HMS-SS) for physical and environmental hazard assessment of the abandoned mercury mine located in Barangay Sta. Lourdes, Puerto Princesa City, Philippines and to produce hazard classification maps based on the generated scores. Results identified the pit lake to be extremely hazardous physically, however, the liquid material (rainfall accumulation in the pit) yielded very low environmental hazard scores with only a few identified points that exceed the regulatory limit. Moreover, the two (2) identified mine tailings sites were found to be physically moderately hazardous but are categorized as extremely hazardous for the environmental aspect. The hazard scoring, coupled with the integrated environmental methods for characterization and development of hazard maps, is recommended as a scientific and quantitative basis for providing decisions in priority of actions to be taken with regards to abandoned mine sites.","PeriodicalId":13980,"journal":{"name":"International journal of environmental science and development","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67451181","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

Determining Key Factors Affecting Surface Water Quality in Soc Trang Province, Vietnam 影响越南Soc Trang省地表水质量的关键因素分析

International journal of environmental science and development Pub Date : 2022-01-01 DOI: 10.18178/ijesd.2022.13.5.1385

N. Giao

{"title":"Determining Key Factors Affecting Surface Water Quality in Soc Trang Province, Vietnam","authors":"N. Giao","doi":"10.18178/ijesd.2022.13.5.1385","DOIUrl":"https://doi.org/10.18178/ijesd.2022.13.5.1385","url":null,"abstract":"This study evaluates the quality and identify key variables influence on surface water quality in Soc Trang province, Vietnam. Water parameters of total suspended solids (TSS), dissolved oxygen (DO), biological oxygen demand (BOD), chemical oxygen demand (COD), total organic carbon (TOC), nitrite (N-NO2-), nitrate (N-NO3-), ammonium (N-NH4+), orthophosphate (PO43--P), total nitrogen (TN) and total phosphorus (TP), turbidity (turb), pH; temperature (T), sulfate (SO42-), electrical conductivity (EC), chloride (Cl-), coliform, and iron (Fe) were used for the assessment. The findings revealed that most of the water parameters of TSS, DO, BOD, COD, TOC, N-NH4+, N-NO2-, Cl-, Fe, and coliforms exceeded the limits of QCVN 08-MT:2015/BTNMT, column A2, B1. The water quality in Hau River was better than the other locations. Saline intrusion has become the concern for surface quality in the study area. PCA showed that five PCs explained 87.9% of the variation of surface water quality in the study area and the parameters including BOD, N-NH4+, TN, TOC, Cl-, TSS, SO42-, Fe and coliforms were the main variables influencing surface water quality in the study area. Potential sources of water pollution are saline intrusion, hydrological regime, runoff, agriculture, industry, and domestic activities.","PeriodicalId":13980,"journal":{"name":"International journal of environmental science and development","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67452070","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 Heavy Metals from Wastewater Using Fly Ash Modified Basic Oxygen Furnace Slag Geopolymers 粉煤灰改性碱性氧炉渣地聚合物去除废水中的重金属

International journal of environmental science and development Pub Date : 2022-01-01 DOI: 10.18178/ijesd.2022.13.5.1389

N. Sithole, Joseph M. Nseke

{"title":"Removal of Heavy Metals from Wastewater Using Fly Ash Modified Basic Oxygen Furnace Slag Geopolymers","authors":"N. Sithole, Joseph M. Nseke","doi":"10.18178/ijesd.2022.13.5.1389","DOIUrl":"https://doi.org/10.18178/ijesd.2022.13.5.1389","url":null,"abstract":"In the current study, fly ash modified basic oxygen furnace slag geopolymers were synthesized and used as geofilters to remove heavy metals from wastewater. Batch experiment based on the removal of heavy metals from synthesized wastewater was conducted so as to investigate the influence of contact time and porosity on the metal removal efficiency and adsorption capacity of the geofilters. Adsorption kinetics was evaluated using Lagergren's pseudo-first-order model, Ho's pseudo-second order and Elovich models. Effect of contact time between geopolymer and wastewater was investigated within the first 15 minutes of adsorption with time interval of 3 minutes. The highest percentages for the removal of Fe2+, Cu2+, Al3+ and Ni2+ions with 1%H2O2 – FA-BOFS based geopolymer obtained after 15minutes were 100%, 86.87%, 84.64% and 84.63% respectively. The trend based on metal absorption capacities in an ascending order given as Fe >Cu>Ni>Al. The adsorption capacity of metal within the 15miniutes was relatively constant possibly due to sufficient number of sites upon which metal ion adsorption may have possibly occurred on the outer surface of geopolymers irrespective of H2O2 content. Metal ion adsorption rates in the current study strongly adhered to the Ho's pseudo-second-order model based on linear regression fitting method. The correlation coefficients R2 were 0.999. FA-BOFS based geopolymer can be considered as emergent and versatile material with inherent chemical microstructural property able to remove heavy metals from polluted effluent and metalliferous drainage.","PeriodicalId":13980,"journal":{"name":"International journal of environmental science and development","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67452651","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

The Emissions and Measures in Greenhouse Gases Management for Climate Change Mitigation in Developing Countries: A Case of Ho Chi Minh City, Vietnam 发展中国家减缓气候变化的温室气体排放及管理措施:以越南胡志明市为例

International journal of environmental science and development Pub Date : 2022-01-01 DOI: 10.18178/ijesd.2022.13.6.1402

B. Q. Ho, K. Vu, T. Nguyen, Quan Le, Rajnish M. Rakholia, Ricardo Simon Carbajo

{"title":"The Emissions and Measures in Greenhouse Gases Management for Climate Change Mitigation in Developing Countries: A Case of Ho Chi Minh City, Vietnam","authors":"B. Q. Ho, K. Vu, T. Nguyen, Quan Le, Rajnish M. Rakholia, Ricardo Simon Carbajo","doi":"10.18178/ijesd.2022.13.6.1402","DOIUrl":"https://doi.org/10.18178/ijesd.2022.13.6.1402","url":null,"abstract":"Vietnam will achieve net-zero greenhouse gases (GHG) emissions by 2050. Ho Chi Minh City (HCMC) has a considerable amount of GHG emissions (accounted for 20,68% of total GHG in Vietnam). The main GHG sources in HCMC are mainly due to the numerous private vehicles used and the increasing rate of factories. Therefore, to reduce the GHG of the city from these two sources, the bottom-up GHG detailed emission inventory (EI) for major sources must be carried out to determine the potential GHG emission sources. The objectives of this research are 1) to develop detailed GHG EI for HCMC and 2) to develop measures to reduce GHG for HCMC. It is the first bottom-up GHG emission inventory study that applied the EMISENS model to calculate the GHG emission from traffic and industrial sources. The total GHG emission of HCMC in 2019 was 58,272,149 tons CO2eq/year. The primary emission of GHG in HCMC is from on-road traffic (13,484,958 tons CO2eq/year) and the industry sector (17,612,942 tons CO2eq/year). Motorcycles contribute the highest (63%) GHG emission from on-road transportation, whereas the chemical industry contributes the highest (63%) GHG emission from industry sources, followed by the sectors of Paper Production (17.3%), Textile (16.1%), and Metal production (14.7%). The study also developed technical and management solutions to achieve the goal of GHG emission reduction for HCMC and contribute to the National target of net-zero GHG. The main management solutions are based on implementing a Carbon Reporting System for industries and buildings in the city.","PeriodicalId":13980,"journal":{"name":"International journal of environmental science and development","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67452921","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

Multi-criteria Assessment of Onsite Packaged Wastewater Treatment Systems 现场包装污水处理系统的多标准评估

International journal of environmental science and development Pub Date : 2022-01-01 DOI: 10.18178/ijesd.2022.13.6.1407

M. E. Ahmed, A. Al-Matouq, M. Khajah, H. Abdullah, F. Al-Ajeel

引用次数: 0

Behavior of the Average Concentrations As Well As Their PM10 and PM2.5 Variability in the Metropolitan Area of Lima, Peru: Case Study February and July 2016 秘鲁利马大都会区平均浓度及其PM10和PM2.5变异性的行为：2016年2月和7月的案例研究

International journal of environmental science and development Pub Date : 2021-07-01 DOI: 10.18178/ijesd.2021.12.7.1341

Warren Reátegui-Romero, Walter F. Zaldivar-Alvarez, Sergio Pacsi-Valdivia, Odón R. Sánchez-Ccoyllo, Alberto E. García-Rivero, Aldo S. Moya-Álvarez

{"title":"Behavior of the Average Concentrations As Well As Their PM10 and PM2.5 Variability in the Metropolitan Area of Lima, Peru: Case Study February and July 2016","authors":"Warren Reátegui-Romero, Walter F. Zaldivar-Alvarez, Sergio Pacsi-Valdivia, Odón R. Sánchez-Ccoyllo, Alberto E. García-Rivero, Aldo S. Moya-Álvarez","doi":"10.18178/ijesd.2021.12.7.1341","DOIUrl":"https://doi.org/10.18178/ijesd.2021.12.7.1341","url":null,"abstract":"This research focused on analyzing the behavior of the hourly average concentrations of PM10 and PM2.5 in relation to vehicular traffic, as well as the effect of relative humidity on these concentrations. Measurements of hourly particulate matter concentrations were recorded by the National Meteorology and Hydrology Service of Peru (SENAMHI) at five surface air quality stations. The profiles of PM10 concentrations are related to traffic behavior, showing high levels of concentrations at peak hours, while the PM2.5 profiles are flatter and better related to traffic in February (summer). The decrease in relative humidity between 80 to 65% in the mornings has a greater effect on the increase in PM10 and PM2.5 concentrations in February than in July (winter), and the increase in relative humidity between 65 to 80 % in the afternoon, it has a greater effect on the decrease in the concentration of PM2.5 in February than in July. The air quality in the north (PPD and CRB stations) and east (SJL station) of the Metropolitan Area of Lima (MAL) are the most polluted. The factors that relate PM10 concentrations with the Peruvian standard in February at these stations were 2.79, 1.78 and 1.26, and in July 2.74, 1.28 and 1.36 respectively. The highest and lowest variability of PM10 and PM2.5 in February and July occurred in the northern area (PPD and SMP stations).","PeriodicalId":13980,"journal":{"name":"International journal of environmental science and development","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44946071","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: 4

Model of Adaptability of Wetlands for Environmental Viability Located in the District of Oyolo, Ayacucho Region Ayacucho地区Oyolo地区湿地环境活力适应性模型

International journal of environmental science and development Pub Date : 2021-03-01 DOI: 10.18178/IJESD.2021.12.3.1321

Julio Cesar Minga, D. Esenarro, Ciro Rodriguez

{"title":"Model of Adaptability of Wetlands for Environmental Viability Located in the District of Oyolo, Ayacucho Region","authors":"Julio Cesar Minga, D. Esenarro, Ciro Rodriguez","doi":"10.18178/IJESD.2021.12.3.1321","DOIUrl":"https://doi.org/10.18178/IJESD.2021.12.3.1321","url":null,"abstract":"This research involved the physical and biological characterization of the Laguiña wetlands, ensuring that experimental stage 1 has better alternative soil and water conditions, these field activities included the establishment of sites, topsoil deposits, plant management, maintenance and subsequent monitoring, to achieve the regeneration of wetlands in the sector selected for transfer, the methodology used by patches, where the vegetation was extracted in small patches (huts) of 50x50x30 cm, composed mainly of Distichia muscoides and Oxychloe Andino, with a total of six (06) extraction points; then five (05) parcels of receiving vegetation were installed, resembling the physical and chemical conditions of the original habitat, but adapting the receiving soil through earthworks and replacement of the upper soil layer with topsoil from the Laguiña sector; Likewise, a test was carried out with stimulating hormone, auxin as rooting; considerable growth observed at higher concentration. The regeneration and adaptability of the vegetation in an area of 2000 m2 was evidenced by verifying the environmental viability of the wetlands in a new physical space under similar conditions. The design for the relocation considered physical, biological and water availability parameters, defining drainage systems to guarantee water flow and achieve soil saturation. Likewise, I assure the alternative conditions of the soil and water through diverse activities, with the objective of the regeneration of the wetlands in the selected location.","PeriodicalId":13980,"journal":{"name":"International journal of environmental science and development","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44054730","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 Impact on Vegetation Dynamics in Tensift Region, Morocco 气候变化对摩洛哥Tensift地区植被动态的影响

International journal of environmental science and development Pub Date : 2021-01-01 DOI: 10.18178/ijesd.2021.12.11.1357

Y. Akensous, A. A. Sabri, S. Al-Akad, M. Hakdaoui

{"title":"Climate Change Impact on Vegetation Dynamics in Tensift Region, Morocco","authors":"Y. Akensous, A. A. Sabri, S. Al-Akad, M. Hakdaoui","doi":"10.18178/ijesd.2021.12.11.1357","DOIUrl":"https://doi.org/10.18178/ijesd.2021.12.11.1357","url":null,"abstract":"Tensift region is known by an arid and semi-arid climate. The city of Marrakech, experience an important temporal variability in rainfall and an increasing trend of temperature during the last five decades. However, the evolution of rainfall is more contrasted by a downward trend in Marrakech, it is also distinguished by alarming clues of global warming, like the number of hot days and heat waves. This paper evaluates the effect of climate change on Vegetation cover (evaluated by NDVI) in the Tensift region, Morocco. Temperature, rainfall data, and vegetation cover were used in this analysis. The effect of climate change on vegetation was studied using a linear regression analysis method, to explore the relationship between vegetation dynamics and climate factors (the trend of vegetation dynamics for the years between 1973 -2019). Analysis of annual data, for the temperature and vegetation cover shows a low regression coefficient value of 0.3057 and, rainfall and vegetation cover analysis show regression coefficient value of 0.7024. Monthly periods analysis showed that the most important period is the one between December and May where the regression coefficient value is 0.6568. In more details the period between March and May shows regression coefficient value of 0.4685, the period between December and February shows regression coefficient value of 0.434, the period between September and November shows regression coefficient value of 0.0734. The study reveals that, rainfall is significantly related with vegetation cover, especially the period between December and May, more than the temperature does in Tensift region.","PeriodicalId":13980,"journal":{"name":"International journal of environmental science and development","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67448314","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

Experimental Study on Flow and Sediment Distribution at Off-Take Channel 坡道水流泥沙分布的试验研究

International journal of environmental science and development Pub Date : 2021-01-01 DOI: 10.18178/IJESD.2021.12.2.1315

L. Malik, M. Matin

{"title":"Experimental Study on Flow and Sediment Distribution at Off-Take Channel","authors":"L. Malik, M. Matin","doi":"10.18178/IJESD.2021.12.2.1315","DOIUrl":"https://doi.org/10.18178/IJESD.2021.12.2.1315","url":null,"abstract":"River off-take is one of the complex features in fluvial systems and the distribution of flow, and sediments along the branches are still a matter of research. This paper deals with a physical simulation on an off-take channel for understanding the flow and sediment distribution in the vicinity. Laboratory-based test runs have been carried out by changing the discharges and the angles off-take. A total of eighteen test runs have been conducted for three discharge conditions with three off-take angles. Two equations for predicting water and sediment discharge ratios have been proposed as a function of Froude number, channel geometry and off-take angel. Flow visualizations have also been carried out in the vicinity of the off-take for understanding erosion and sedimentation pattern. Flow and sediment movement patterns were carefully observed during the simulation and four distinguished zone formations have been noted in the vicinity. Finally, validations of the developed equations have been done with the field data from selected river off-take systems of Bangladesh. Validation results of field data show mean discrepancy ratios of 0.83 for the discharge equation and 0.89 for sediment equation during low flow.","PeriodicalId":13980,"journal":{"name":"International journal of environmental science and development","volume":"12 1","pages":"35-41"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67448838","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