Hasna Ameena Puthiya Ottayil, A. Varughese, Gilsha Bai Edachalil Balan, Rema Kulangara Puthanmadathil
The behavior of groundwater flow in coastal aquifers is influenced by variations in salinity and density levels. Models for groundwater flow and solute transport are employed to analyze the impact of these variations. In this study, a groundwater flow and solute transport model was developed for the coastal aquifer of the Bharathapuzha River. Visual MODFLOW 2.8.1 and MT3D were utilized for modeling groundwater flow and solute transport, respectively. Water level and quality data were collected from 18 observation wells in the field on a monthly basis from 2012 to 2021. Additionally, monthly water level data from four wells managed by the Central Water Commission (CWC) were incorporated as input for the models. Hydrogeological properties of the aquifer, such as specific yield, porosity, and specific storage, were obtained from the Groundwater Department and available literature. The model was calibrated and validated using field data and subsequently employed to predict groundwater flow and solute transport in the area. The results indicate that the river stretch is highly susceptible to saltwater intrusion. Salinity levels in certain wells (wells 7, 8, 13, and 14) exceeded the acceptable limits for drinking water as per the BIS standards. Based on model predictions, saltwater intrusion is projected to extend approximately 4.8 to 5 km from the Ponnani estuary, laterally upstream along the river course, within the next 10 to 15 years if pumping rates increase by 5 to 10% from the current rate. If the pumping rate rises by 15 percent, the intrusion may extend up to 6 km from the coast. Therefore, it is crucial to implement optimal freshwater withdrawal strategies and mitigation measures in these areas to safeguard the coastal aquifers. Restricting groundwater usage along the river banks within a lateral distance of at least 5 km from the seashore is recommended.
{"title":"ASSESSMENT OF SALINE WATER INTRUSION IN A COASTAL REGION OF KERALA, INDIA","authors":"Hasna Ameena Puthiya Ottayil, A. Varughese, Gilsha Bai Edachalil Balan, Rema Kulangara Puthanmadathil","doi":"10.30638/eemj.2023.047","DOIUrl":"https://doi.org/10.30638/eemj.2023.047","url":null,"abstract":"The behavior of groundwater flow in coastal aquifers is influenced by variations in salinity and density levels. Models for groundwater flow and solute transport are employed to analyze the impact of these variations. In this study, a groundwater flow and solute transport model was developed for the coastal aquifer of the Bharathapuzha River. Visual MODFLOW 2.8.1 and MT3D were utilized for modeling groundwater flow and solute transport, respectively. Water level and quality data were collected from 18 observation wells in the field on a monthly basis from 2012 to 2021. Additionally, monthly water level data from four wells managed by the Central Water Commission (CWC) were incorporated as input for the models. Hydrogeological properties of the aquifer, such as specific yield, porosity, and specific storage, were obtained from the Groundwater Department and available literature. The model was calibrated and validated using field data and subsequently employed to predict groundwater flow and solute transport in the area. The results indicate that the river stretch is highly susceptible to saltwater intrusion. Salinity levels in certain wells (wells 7, 8, 13, and 14) exceeded the acceptable limits for drinking water as per the BIS standards. Based on model predictions, saltwater intrusion is projected to extend approximately 4.8 to 5 km from the Ponnani estuary, laterally upstream along the river course, within the next 10 to 15 years if pumping rates increase by 5 to 10% from the current rate. If the pumping rate rises by 15 percent, the intrusion may extend up to 6 km from the coast. Therefore, it is crucial to implement optimal freshwater withdrawal strategies and mitigation measures in these areas to safeguard the coastal aquifers. Restricting groundwater usage along the river banks within a lateral distance of at least 5 km from the seashore is recommended.","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69522819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"ENHANCED COPPER REMOVAL AND BIOGAS PRODUCTION THROUGH INTERMITTENT OPERATION OF COUPLED MODIFIED UPFLOW WITH STATIC GRANULAR BED REACTOR TREATING COPPER-CONTAINING WASTEWATER","authors":"Mariraj Mohan Sundararajan, Swathi Thirunavukkarasan","doi":"10.30638/eemj.2023.102","DOIUrl":"https://doi.org/10.30638/eemj.2023.102","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135009845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"RESEARCH ON REGIONAL ECOLOGICAL COMPENSATION IN CHINA: A FOCUS ON CARBON EQUALITY","authors":"Yuxin Xie, Junwen Cao","doi":"10.30638/eemj.2023.106","DOIUrl":"https://doi.org/10.30638/eemj.2023.106","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"ECOSYSTEM SERVICES AND ENVIRONMENTAL BENEFIT VALUES ON KOMODO ISLAND AND PADAR ISLAND IN KOMODO NATIONAL PARK, INDONESIA","authors":"Irman Firmansyah, Wayan Budiasa, Chaterina Agusta Paulus, Dede Aulia Rahman, Tatan Sukwika, Erwin Hermawan, Nama Casnan","doi":"10.30638/eemj.2023.103","DOIUrl":"https://doi.org/10.30638/eemj.2023.103","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135009126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Steel industries generate wastewater laden with toxic metals such as Chromium VI(Cr6+) which are classified as carcinogenic and toxic to aquatic life. There is need to meet standards for effluent discharge in order to comply with local and international standards. Chemical precipitation is a commonly applied low-cost technology, but has proven to be unsustainable due to sludge disposal that creates secondary pollution. Devki steel factory located in Ruiru municipality, Kiambu County is a factory that process steel products. Chemical precipitation is applied in Cr6+ treatment at effluent discharged at the factory which exceed international and local effluent discharge standard limits. There is thus need to develop innovative yet affordable technologies for Cr6+. The potential of carbonized macadamia nutshell (CMN) in Cr6+ adsorption as an alternative and eco-friendly technology was evaluated. Carbonization process modified the adsorbent surface properties by increasing the surface area, pore size, carbon content, and Cr6+ removal rate from 40.21-380.64 m2/g, 1.63-8.78 Å, 47.01-57.2% and 71-97% respectively. Maximum Cr6+ adsorption was obtained at a metal concentration 50mg/L, pH 4, contact time of 2 hours, 0.2g dose, and at 30°C. The equilibrium data were well depicted by Langmuir and Freundlich isotherm. Experimental data were well fitted with Pseudo second-order kinetics. Maximum adsorption capacity of 24.3 mg/g and removal efficiency at 97.2% was attained by CMN compared to raw macadamia nutshell (RMN) 17.95 mg/g and 71.6% respectively. The desorption results revealed that the spent adsorbent could be reused for three adsorption cycles, which makes the process eco-friendly.
{"title":"POTENTIAL REMOVAL OF CHROMIUM (VI) IONS BY MACADAMIA NUTSHELL FROM STEEL INDUSTRY WASTEWATER","authors":"Josephine Tinega, I. Omosa, S. Letema","doi":"10.30638/eemj.2023.032","DOIUrl":"https://doi.org/10.30638/eemj.2023.032","url":null,"abstract":"Steel industries generate wastewater laden with toxic metals such as Chromium VI(Cr6+) which are classified as carcinogenic and toxic to aquatic life. There is need to meet standards for effluent discharge in order to comply with local and international standards. Chemical precipitation is a commonly applied low-cost technology, but has proven to be unsustainable due to sludge disposal that creates secondary pollution. Devki steel factory located in Ruiru municipality, Kiambu County is a factory that process steel products. Chemical precipitation is applied in Cr6+ treatment at effluent discharged at the factory which exceed international and local effluent discharge standard limits. There is thus need to develop innovative yet affordable technologies for Cr6+. The potential of carbonized macadamia nutshell (CMN) in Cr6+ adsorption as an alternative and eco-friendly technology was evaluated. Carbonization process modified the adsorbent surface properties by increasing the surface area, pore size, carbon content, and Cr6+ removal rate from 40.21-380.64 m2/g, 1.63-8.78 Å, 47.01-57.2% and 71-97% respectively. Maximum Cr6+ adsorption was obtained at a metal concentration 50mg/L, pH 4, contact time of 2 hours, 0.2g dose, and at 30°C. The equilibrium data were well depicted by Langmuir and Freundlich isotherm. Experimental data were well fitted with Pseudo second-order kinetics. Maximum adsorption capacity of 24.3 mg/g and removal efficiency at 97.2% was attained by CMN compared to raw macadamia nutshell (RMN) 17.95 mg/g and 71.6% respectively. The desorption results revealed that the spent adsorbent could be reused for three adsorption cycles, which makes the process eco-friendly.","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69520988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Janhavi Joshi, A. Atre, S. Nandgude, M. Shinde, A. Durgude, S. Gorantiwar, Mahesh Patil
{"title":"ESTIMATION OF SUSPENDED SEDIMENT CONCENTRATION USING SENTINEL-2 BAND FUNCTIONS IN MULA RESERVOIR, RAHURI, INDIA","authors":"Janhavi Joshi, A. Atre, S. Nandgude, M. Shinde, A. Durgude, S. Gorantiwar, Mahesh Patil","doi":"10.30638/eemj.2023.029","DOIUrl":"https://doi.org/10.30638/eemj.2023.029","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69521149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hendrigo Venes, Tânia Galavote, D. Brumatti, Gisele de Lorena Diniz Chaves, R. Siman
The escalating generation of construction and demolition waste (C&DW) owing to the rapid increase in population and the per capita generation (PCG) index as an urban development metric has triggered numerous research endeavors aimed at formulating effective mechanisms and strategies to manage this waste stream. This study aims to assess the efficacy of economic instruments in promoting C&DW reuse and diverting waste from sanitary landfills using the System Dynamics (SD) tool and scenario simulations spanning the period 2020 to 2040 in the municipality of Serra, Espírito Santo (ES). Our findings reveal that the PCG index exerts a staggering 84-fold greater influence on C&DW generation compared to that of population growth. Additionally, we observe that the implementation of a public policy, such as a landfill tax, can substantially augment aggregate recycling by 124 times when comparing the highest tax rates (6%) to the lowest tax rates (2%). Nevertheless, even under the best-case scenario, our analysis demonstrates a potential rise of 76,000 tons of illegal dumping, leading to an approximate cost increase of 10 million dollars for C&DW management until 2040. To enhance future investigations, we suggest the inclusion of penalties and subsidies in the model to comprehensively evaluate their impact on C&DW management alongside the taxation applied to landfill disposal. This multifaceted approach can provide valuable insights for devising more effective waste management strategies.
{"title":"AN ECONOMIC ASSESSMENT MODEL OF CONSTRUCTION AND DEMOLITION WASTE MANAGEMENT BASED ON SYSTEM DYNAMICS: A CASE STUDY IN THE CITY OF SERRA - ES","authors":"Hendrigo Venes, Tânia Galavote, D. Brumatti, Gisele de Lorena Diniz Chaves, R. Siman","doi":"10.30638/eemj.2023.068","DOIUrl":"https://doi.org/10.30638/eemj.2023.068","url":null,"abstract":"The escalating generation of construction and demolition waste (C&DW) owing to the rapid increase in population and the per capita generation (PCG) index as an urban development metric has triggered numerous research endeavors aimed at formulating effective mechanisms and strategies to manage this waste stream. This study aims to assess the efficacy of economic instruments in promoting C&DW reuse and diverting waste from sanitary landfills using the System Dynamics (SD) tool and scenario simulations spanning the period 2020 to 2040 in the municipality of Serra, Espírito Santo (ES). Our findings reveal that the PCG index exerts a staggering 84-fold greater influence on C&DW generation compared to that of population growth. Additionally, we observe that the implementation of a public policy, such as a landfill tax, can substantially augment aggregate recycling by 124 times when comparing the highest tax rates (6%) to the lowest tax rates (2%). Nevertheless, even under the best-case scenario, our analysis demonstrates a potential rise of 76,000 tons of illegal dumping, leading to an approximate cost increase of 10 million dollars for C&DW management until 2040. To enhance future investigations, we suggest the inclusion of penalties and subsidies in the model to comprehensively evaluate their impact on C&DW management alongside the taxation applied to landfill disposal. This multifaceted approach can provide valuable insights for devising more effective waste management strategies.","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69525908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"BIOLOGICAL ASSESSMENT OF WATER QUALITY IN A MOSAIC OF RIVERINE, ESTUARINE AND COASTAL ECOSYSTEMS","authors":"Atefeh Chamani, A. Yousefi, M. A. Nadoushan","doi":"10.30638/eemj.2023.004","DOIUrl":"https://doi.org/10.30638/eemj.2023.004","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69518988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"AN EMPIRICAL STUDY OF INDUSTRIAL SOLID WASTE COLLECTION IN SHWE PYI THAR INDUSTRIAL ZONE, YANGON","authors":"H. Park, Myint Zaw Oo","doi":"10.30638/eemj.2023.003","DOIUrl":"https://doi.org/10.30638/eemj.2023.003","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69518940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：