Pub Date : 2015-01-01DOI: 10.5829/IDOSI.IJEE.2015.06.01.06
W. Khalik, M. Abdullah, F. Al-Qaim
{"title":"Chemometric Application on Surface River Water Quality: A Case Study of Linggi River, Malaysia","authors":"W. Khalik, M. Abdullah, F. Al-Qaim","doi":"10.5829/IDOSI.IJEE.2015.06.01.06","DOIUrl":"https://doi.org/10.5829/IDOSI.IJEE.2015.06.01.06","url":null,"abstract":"","PeriodicalId":14591,"journal":{"name":"iranica journal of energy and environment","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84254463","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}
Pub Date : 2015-01-01DOI: 10.5829/idosi.ijee.2015.06.01.01
K. Ahmadi
{"title":"Application and Economic Viability of Wind Turbine Installation in Lutak, Iran","authors":"K. Ahmadi","doi":"10.5829/idosi.ijee.2015.06.01.01","DOIUrl":"https://doi.org/10.5829/idosi.ijee.2015.06.01.01","url":null,"abstract":"","PeriodicalId":14591,"journal":{"name":"iranica journal of energy and environment","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87731521","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}
Pub Date : 2014-10-01DOI: 10.5829/idosi.ijee.2014.05.04.11
I. Aisyah, M. N. S. Norfariha, M. Azlan, I. Norli
Performance of synthetic organic polymer (polyacrylamide) and natural organic polymers (pectin) as flocculant in coagulation-flocculation treatment will be assessed. Analysis of functional group of organic polymer was done by Fourier Transform Infrared Spectroscopy - Attenuated Total Reflectance (FTIR-ATR). Response Surface Methodology - Central Composite Design (RSM-CCD) was used to evaluate the interaction effects of pH, coagulant dose and flocculant dose. The experiment was conducted in lab scale of 500mL of sample textile wastewater with six paddle of conventional jar test. Trimmed Spearman-Karber method has been used to estimate median lethal concentration (LC ) values and their confidence intervals. The result shows 50 polyacrylamide added in the treatment was the best at optimum pH 5, coagulant dose at 275 mg/ L and flocculant dose at 35 mg/ L with 88 and 80% removal. In contrast, additions of natural organic flocculant only manage to remove 54.2 and 67 % at the optimum pH 5, coagulant and flocculant dosage at 427.4 and 21.9 mg/ L respectively. However, polyacrylamide treatment claimed to be more toxic based on lethal concentration (LC ) 50 at 17 % compare to natural organic flocculant at 34%.
{"title":"Comparison of Synthetic and Natural Organic Polymers as Flocculant for Textile Wastewater Treatment","authors":"I. Aisyah, M. N. S. Norfariha, M. Azlan, I. Norli","doi":"10.5829/idosi.ijee.2014.05.04.11","DOIUrl":"https://doi.org/10.5829/idosi.ijee.2014.05.04.11","url":null,"abstract":"Performance of synthetic organic polymer (polyacrylamide) and natural organic polymers (pectin) as flocculant in coagulation-flocculation treatment will be assessed. Analysis of functional group of organic polymer was done by Fourier Transform Infrared Spectroscopy - Attenuated Total Reflectance (FTIR-ATR). Response Surface Methodology - Central Composite Design (RSM-CCD) was used to evaluate the interaction effects of pH, coagulant dose and flocculant dose. The experiment was conducted in lab scale of 500mL of sample textile wastewater with six paddle of conventional jar test. Trimmed Spearman-Karber method has been used to estimate median lethal concentration (LC ) values and their confidence intervals. The result shows 50 polyacrylamide added in the treatment was the best at optimum pH 5, coagulant dose at 275 mg/ L and flocculant dose at 35 mg/ L with 88 and 80% removal. In contrast, additions of natural organic flocculant only manage to remove 54.2 and 67 % at the optimum pH 5, coagulant and flocculant dosage at 427.4 and 21.9 mg/ L respectively. However, polyacrylamide treatment claimed to be more toxic based on lethal concentration (LC ) 50 at 17 % compare to natural organic flocculant at 34%.","PeriodicalId":14591,"journal":{"name":"iranica journal of energy and environment","volume":"185 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78521845","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}
Pub Date : 2014-10-01DOI: 10.5829/idosi.ijee.2014.05.04.12
Sawaira Adil, A. Mashiatullah, Maliha Asma, Jawaria Abid, A. Ghaffar
Paper mulberry bio-char produced was characterized and evaluated for heavy metals removal from simulated industrial wastewater in compare to silica powder. The batch adsorption study was conducted under different conditions like, the effects of solution pH, contact time and temperature. The paper mulberry bio-char (PMB) was more effective and exhibited a higher adsorption potential for cadmium, copper, chromium, lead and zinc than commercially available silica powder. Experiments conducted with an initial metal concentration of 50 mg/l at pH 2, 4, 8, 12. Maximum removal of cadmium, copper, chromium, lead and zinc by PMB was higher than silica powder. Contact time of 2, 3, 4 h showed maximum removal of cadmium, copper, chromium, lead and zinc removal for PMB and was found higher than that of silica powder. The thermodynamic parameters such as G°, H° and S° were calculated for predicting the nature of sorption. The results showed that plant-residue bio-char can act as effective alternative sorbent instead of silica powder for the removal of heavy metal ions from industrial wastewater.
{"title":"Heavy Metal Removal Efficiency of Paper Mulberry Biochar and Commercially Available Silica Powder from Simulated Industrial Wastewater","authors":"Sawaira Adil, A. Mashiatullah, Maliha Asma, Jawaria Abid, A. Ghaffar","doi":"10.5829/idosi.ijee.2014.05.04.12","DOIUrl":"https://doi.org/10.5829/idosi.ijee.2014.05.04.12","url":null,"abstract":"Paper mulberry bio-char produced was characterized and evaluated for heavy metals removal from simulated industrial wastewater in compare to silica powder. The batch adsorption study was conducted under different conditions like, the effects of solution pH, contact time and temperature. The paper mulberry bio-char (PMB) was more effective and exhibited a higher adsorption potential for cadmium, copper, chromium, lead and zinc than commercially available silica powder. Experiments conducted with an initial metal concentration of 50 mg/l at pH 2, 4, 8, 12. Maximum removal of cadmium, copper, chromium, lead and zinc by PMB was higher than silica powder. Contact time of 2, 3, 4 h showed maximum removal of cadmium, copper, chromium, lead and zinc removal for PMB and was found higher than that of silica powder. The thermodynamic parameters such as G°, H° and S° were calculated for predicting the nature of sorption. The results showed that plant-residue bio-char can act as effective alternative sorbent instead of silica powder for the removal of heavy metal ions from industrial wastewater.","PeriodicalId":14591,"journal":{"name":"iranica journal of energy and environment","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80278256","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}
Pub Date : 2014-07-01DOI: 10.5829/IDOSI.IJEE.2014.05.03.11
I. Puspasari, S. M. Tasirin, Y. Gariépy
Quality changes of red pitaya (Hylocereus undatus) slices dried in hot air, microwave-hot air and microwave-vacuum dryers were investigated. The quality parameters were colour, water activity, shrinkage, rehydration ratio, ascorbic acid content and visual market quality. Microwave-vacuum produced pitaya with the best quality compared to hot air and microwave-hot air. Pitaya dried in microwave-vacuum had the highest rehydration ratio while the other methods presented similar rehydration ratios. Ascorbic acid in dried pitaya was also better retained when drying by microwave-vacuum. Apart from that, the drying time of pitaya dried in microwave-vacuum could be reduced by 83% compared to hot air.
{"title":"Quality Changes of Red Pitaya (Hylocereus undatus) Slices Dried in Hot Air, Microwave-Hot Air and Microwave-Vacuum Dryers","authors":"I. Puspasari, S. M. Tasirin, Y. Gariépy","doi":"10.5829/IDOSI.IJEE.2014.05.03.11","DOIUrl":"https://doi.org/10.5829/IDOSI.IJEE.2014.05.03.11","url":null,"abstract":"Quality changes of red pitaya (Hylocereus undatus) slices dried in hot air, microwave-hot air and microwave-vacuum dryers were investigated. The quality parameters were colour, water activity, shrinkage, rehydration ratio, ascorbic acid content and visual market quality. Microwave-vacuum produced pitaya with the best quality compared to hot air and microwave-hot air. Pitaya dried in microwave-vacuum had the highest rehydration ratio while the other methods presented similar rehydration ratios. Ascorbic acid in dried pitaya was also better retained when drying by microwave-vacuum. Apart from that, the drying time of pitaya dried in microwave-vacuum could be reduced by 83% compared to hot air.","PeriodicalId":14591,"journal":{"name":"iranica journal of energy and environment","volume":"188 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83461448","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}
Pub Date : 2014-07-01DOI: 10.5829/IDOSI.IJEE.2014.05.03.07
A. S. Kovo, S. Olu, E. S. Gwatana
Date of Received: June 14, 2014; Date of Accepted in Revised Form: August 3, 2014 Abstract: The adsorption capacity of Neem Leaves powder (NLP) used as a low-cost adsorbent for the removal of Chromium (VI) from aqueous solutions was investigated. During the adsorption process, batch technique was used. The effects of initial metal ion concentration, adsorbent dose, temperature, pH and agitation/contact time on adsorption rate at constant solution pH of 6.4, under a constant temperature of 30°C were studied. The results were analyzed using three adsorption isotherm models; Freundlich, Langmuir and Temkin. Evaluating the correlation coefficients showed that Langmuir isotherm described the data more appropriately than the other isotherms. The adsorption capacity (q ) from Langmuir isotherm for Chromium (VI) was found m to be 125.83mg g . The effectiveness of Neem Leave Powder (NLP) in the adsorption of the heavy metal 1
{"title":"Adsorption of Chromium (IV) by a Low Cost Adsorbent Prepared from Neem Leaves","authors":"A. S. Kovo, S. Olu, E. S. Gwatana","doi":"10.5829/IDOSI.IJEE.2014.05.03.07","DOIUrl":"https://doi.org/10.5829/IDOSI.IJEE.2014.05.03.07","url":null,"abstract":"Date of Received: June 14, 2014; Date of Accepted in Revised Form: August 3, 2014 Abstract: The adsorption capacity of Neem Leaves powder (NLP) used as a low-cost adsorbent for the removal of Chromium (VI) from aqueous solutions was investigated. During the adsorption process, batch technique was used. The effects of initial metal ion concentration, adsorbent dose, temperature, pH and agitation/contact time on adsorption rate at constant solution pH of 6.4, under a constant temperature of 30°C were studied. The results were analyzed using three adsorption isotherm models; Freundlich, Langmuir and Temkin. Evaluating the correlation coefficients showed that Langmuir isotherm described the data more appropriately than the other isotherms. The adsorption capacity (q ) from Langmuir isotherm for Chromium (VI) was found m to be 125.83mg g . The effectiveness of Neem Leave Powder (NLP) in the adsorption of the heavy metal 1","PeriodicalId":14591,"journal":{"name":"iranica journal of energy and environment","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78422699","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}
Pub Date : 2014-07-01DOI: 10.5829/IDOSI.IJEE.2014.05.03.06
S. Beheshti, M. Jafari, L. Omidi, M. Azari, M. M. Nejad, M. Namdari
The selection of the packing media is concerned when ammonia is going to be scrubbed through a packed tower. In this study, a packed tower with two types of packing including raschig rings and PVC were used to remove the ammonia gas from air stream. Three gas flow rates as well as three ammonia concentrations and three pH of scrubbing liquid were applied. The level of ammonia at the inlet and out let of the packed tower was measured through a direct reading device. The removal efficiency of column significantly increased in both modes, packed with raschig rings and PVC (p<0.001) as the inlet concentration of ammonia gas wasincreased. With decreasing pH of scrubbing liquid from 7 to 5, the removal efficiency of the tower packedwith raschig rings significantly increased (p< 0.01). The head loss across the bed was significantly increased(p< 0.001) as air flow rate increased from 5 to 10 and 10 to 15 l/s. The packed with PVC. The lower ammonia removalefficiency of PVC rings could be ignored considering their other advantages such as light weight, low headlosses, low initial and operating costs.
{"title":"Raschig Rings Versus PVC as a Packed Tower Media in Scrubbing Ammonia from Air","authors":"S. Beheshti, M. Jafari, L. Omidi, M. Azari, M. M. Nejad, M. Namdari","doi":"10.5829/IDOSI.IJEE.2014.05.03.06","DOIUrl":"https://doi.org/10.5829/IDOSI.IJEE.2014.05.03.06","url":null,"abstract":"The selection of the packing media is concerned when ammonia is going to be scrubbed through a packed tower. In this study, a packed tower with two types of packing including raschig rings and PVC were used to remove the ammonia gas from air stream. Three gas flow rates as well as three ammonia concentrations and three pH of scrubbing liquid were applied. The level of ammonia at the inlet and out let of the packed tower was measured through a direct reading device. The removal efficiency of column significantly increased in both modes, packed with raschig rings and PVC (p<0.001) as the inlet concentration of ammonia gas wasincreased. With decreasing pH of scrubbing liquid from 7 to 5, the removal efficiency of the tower packedwith raschig rings significantly increased (p< 0.01). The head loss across the bed was significantly increased(p< 0.001) as air flow rate increased from 5 to 10 and 10 to 15 l/s. The packed with PVC. The lower ammonia removalefficiency of PVC rings could be ignored considering their other advantages such as light weight, low headlosses, low initial and operating costs.","PeriodicalId":14591,"journal":{"name":"iranica journal of energy and environment","volume":"96 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74770054","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}
Pub Date : 2014-07-01DOI: 10.5829/IDOSI.IJEE.2014.05.03.10
P. Kanmani, E. Dhivya, J. Aravind, K. Kumaresan
Pectin is a structural hetero polysaccharide, commonly obtained from the peels of citrus fruits and finds prime commercial use as a gelling agent and stabilizer in food industries. In the present study, pectin was extracted using alcohol precipitation method from the peels of orange (Citrus sinensis), sweet lime (Citrus limetta) and lemon (Citrus limon). When the extraction conditions were varied one-at-a-time, a maximum yield of 36.71% was obtained from C. limon, after which the yield was further enhanced using the Box-Behnken Design of Response Surface Methodology. Optimum conditions for the extraction process were established to be pH 3.5, temperature 65°C and time 67.5 min. The interaction effects of these variables were studied using 3-D and contour plots. A 1.5-fold increase in pectin yield was obtained as a result of this experimental design. Analysis of variance indicated the significance of the model. The pectin obtained was then subjected to qualitative and quantitative analyses and found to contain desirable methoxyl, hyaluronic acid contents and degree of esterification. Functional groups present in the pectin were investigated using FTIR spectroscopy. The overall results point towards the amenability of the extracted pectin for industrial applications.
{"title":"Extraction and Analysis of Pectin from Citrus Peels: Augmenting the Yield from Citrus limon Using Statistical Experimental Design","authors":"P. Kanmani, E. Dhivya, J. Aravind, K. Kumaresan","doi":"10.5829/IDOSI.IJEE.2014.05.03.10","DOIUrl":"https://doi.org/10.5829/IDOSI.IJEE.2014.05.03.10","url":null,"abstract":"Pectin is a structural hetero polysaccharide, commonly obtained from the peels of citrus fruits and finds prime commercial use as a gelling agent and stabilizer in food industries. In the present study, pectin was extracted using alcohol precipitation method from the peels of orange (Citrus sinensis), sweet lime (Citrus limetta) and lemon (Citrus limon). When the extraction conditions were varied one-at-a-time, a maximum yield of 36.71% was obtained from C. limon, after which the yield was further enhanced using the Box-Behnken Design of Response Surface Methodology. Optimum conditions for the extraction process were established to be pH 3.5, temperature 65°C and time 67.5 min. The interaction effects of these variables were studied using 3-D and contour plots. A 1.5-fold increase in pectin yield was obtained as a result of this experimental design. Analysis of variance indicated the significance of the model. The pectin obtained was then subjected to qualitative and quantitative analyses and found to contain desirable methoxyl, hyaluronic acid contents and degree of esterification. Functional groups present in the pectin were investigated using FTIR spectroscopy. The overall results point towards the amenability of the extracted pectin for industrial applications.","PeriodicalId":14591,"journal":{"name":"iranica journal of energy and environment","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83831770","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}
Pub Date : 2014-07-01DOI: 10.5829/IDOSI.IJEE.2014.05.03.12
A. Mansouri, A. Zinatizadeh, A. Akhbari
The kinetics of simultaneous removal of carbon, nitrogen and phosphorus from a synthetic wastewater in an innovative up-flow aerobic/anoxic sludge fixed film (UAASFF) bioreactor was investigated. The kinetic analysis was performed using the experimental data obtained in an earlier study where the UAASFF bioreactor was examined under different operating conditions by changing three independent variables, HRT, COD:N:P ratio and aeration time. In the analysis, different kinetic models (Monod, first-order, second-order and Stover-Kincannon models) were evaluated. The maximum removal efficiency of COD, total nitrogen (TN) and phosphorus (TP) were obtained to be 95.42, 79 and 79.1 %, respectively. All the models examined, gave high correlation coefficients for carbon, nitrogen and phosphorus removal. Biokinetic coefficients were determined as Y= 0.417-0.496 g VSS/g COD, k = 0.027-0.053 d , µ =1.36 g VSS /g VSS.d, K =37.96 g/l.d U =38.46 g/l.d, d max B , max 1
研究了新型上流式好氧/厌氧污泥固定膜(UAASFF)生物反应器对合成废水中碳、氮、磷的同时去除动力学。使用实验数据获得的动力学分析在早期研究UAASFF生物反应器研究在不同操作条件下通过改变三个独立变量,荷尔蒙替代疗法,鳕鱼:N: P比、曝气时间。在分析中，评估了不同的动力学模型(Monod、一阶、二阶和Stover-Kincannon模型)。COD、TN和TP的最大去除率分别为95.42%、79%和79.1%。所有经过检验的模型都给出了碳、氮和磷去除的高相关系数。生物动力学系数为Y= 0.417 ~ 0.496 g VSS/g COD, k = 0.027 ~ 0.053 d，µ=1.36 g VSS/g VSS。d, K =37.96 g/l。d U =38.46 g/l。d, d马克斯B,最大值1
{"title":"Kinetic Evaluation of Simultaneous CNP Removal in an up-Flow Aerobic/Anoxic Sludge Fixed Film (UAASFF) Bioreactor","authors":"A. Mansouri, A. Zinatizadeh, A. Akhbari","doi":"10.5829/IDOSI.IJEE.2014.05.03.12","DOIUrl":"https://doi.org/10.5829/IDOSI.IJEE.2014.05.03.12","url":null,"abstract":"The kinetics of simultaneous removal of carbon, nitrogen and phosphorus from a synthetic wastewater in an innovative up-flow aerobic/anoxic sludge fixed film (UAASFF) bioreactor was investigated. The kinetic analysis was performed using the experimental data obtained in an earlier study where the UAASFF bioreactor was examined under different operating conditions by changing three independent variables, HRT, COD:N:P ratio and aeration time. In the analysis, different kinetic models (Monod, first-order, second-order and Stover-Kincannon models) were evaluated. The maximum removal efficiency of COD, total nitrogen (TN) and phosphorus (TP) were obtained to be 95.42, 79 and 79.1 %, respectively. All the models examined, gave high correlation coefficients for carbon, nitrogen and phosphorus removal. Biokinetic coefficients were determined as Y= 0.417-0.496 g VSS/g COD, k = 0.027-0.053 d , µ =1.36 g VSS /g VSS.d, K =37.96 g/l.d U =38.46 g/l.d, d max B , max 1","PeriodicalId":14591,"journal":{"name":"iranica journal of energy and environment","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73634421","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}
Pub Date : 2014-07-01DOI: 10.5829/IDOSI.IJEE.2014.05.03.03
A. Farzampour, F. Salmasi, Behnam Mansuri
Seepage in embankment dams is one of the important factors in stability and dam's maintenance. Core in earth dam is essential for waterproofing and controlling of seepage. Therefore, selection of proper materials and sizes for core of earth dam are very important. Thick clay core is proper for waterproofing but because of low shear strength of the clay, it would be dangerous for dam's stability. The optimal core would be the core which has proper waterproofing, stability safety factor and also with economic condition. In this study, the aim is to determine the optimum size for clay core of Alavian dam near Maragheh city in steady state seepage condition. For this purposes, Geo-Studio pack is used for numerical simulation. In addition, simulation of seepage and slope stability for the built maps of the dam, 11 more models of the dam with different size of cores were tested to find the optimum core thickness. From these models, data required for objective function and constraints using regression techniques for seepage, hydraulic gradient and stability safety factor were provided. Results showed that optimized volume of the core is 35% smaller than the present core.
{"title":"Optimum Size for Clay Core of Alavian Earth Dam by Numerical Simulation","authors":"A. Farzampour, F. Salmasi, Behnam Mansuri","doi":"10.5829/IDOSI.IJEE.2014.05.03.03","DOIUrl":"https://doi.org/10.5829/IDOSI.IJEE.2014.05.03.03","url":null,"abstract":"Seepage in embankment dams is one of the important factors in stability and dam's maintenance. Core in earth dam is essential for waterproofing and controlling of seepage. Therefore, selection of proper materials and sizes for core of earth dam are very important. Thick clay core is proper for waterproofing but because of low shear strength of the clay, it would be dangerous for dam's stability. The optimal core would be the core which has proper waterproofing, stability safety factor and also with economic condition. In this study, the aim is to determine the optimum size for clay core of Alavian dam near Maragheh city in steady state seepage condition. For this purposes, Geo-Studio pack is used for numerical simulation. In addition, simulation of seepage and slope stability for the built maps of the dam, 11 more models of the dam with different size of cores were tested to find the optimum core thickness. From these models, data required for objective function and constraints using regression techniques for seepage, hydraulic gradient and stability safety factor were provided. Results showed that optimized volume of the core is 35% smaller than the present core.","PeriodicalId":14591,"journal":{"name":"iranica journal of energy and environment","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82081605","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}
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