Number 46 Volume 13

Open Access Article

1 - Investigating the Pollution of Radioactive Elements Based on Airborn Radiometric Geophysical Measurements in Goljeh (Zanjan province)
Iren Hosseini , Shahram Baikpour Afshar Ziazarifi

The study area is located in the southeastern quarter of Hashtjin 1:100000 geological map in Zanjan province. The area is located in both Eastern Alborz and Central Iran geological settings and known as Gollejeh/ Gulluja region. A wide spectrum of extrusive and intrusiv More

The study area is located in the southeastern quarter of Hashtjin 1:100000 geological map in Zanjan province. The area is located in both Eastern Alborz and Central Iran geological settings and known as Gollejeh/ Gulluja region. A wide spectrum of extrusive and intrusive igneous rocks as well as volcanoclastic sediments are exposed in the investigated area. Structural elements such as faults along with lithological heterogenities led to differential erosion and creation a various topography. The aim of the study is to measure the contamination of the radioactive elements of uranium, thorium and potassium in such geological setting. A total of 52107 samples were systematically gathered by airborn radiometric geophysical method. Statistical analysis and iso-concentrational mapping overlain on the satellite and geological map of the area show that the high concentration of these radioactive elements is generally associated with the igneous rocks such as granitic rocks distributed in the eastern part of the study area (e.g. Varmaziarabd village). The low concentrations of the U, Th and K could mainly be observed over volcanoclastic rocks in the middle parts of the study area (e.g. Habash and Tristan villages). Average concentration of the radioactive elements does not show a serious contamination in the area, while the maximum concentration of the thorium elements exceeds the standard of WHO.    Manuscript profile

Open Access Article

2 - Investigating The Effects of Rainfall on Chemical Quality of Drinking Water Sources in Northern Fars Cities During 2011-2016
Ali Shabani MohammadHadi Fattahi

The purpose of this study was to investigate the effects of rainfall on the chemical quality of drinking water sources in northern Fars Province cities and on the factors EC, PH, TDS, F, NO3 in alluvial and limestone formations and in the period from 2011 to 2016 years. More

The purpose of this study was to investigate the effects of rainfall on the chemical quality of drinking water sources in northern Fars Province cities and on the factors EC, PH, TDS, F, NO3 in alluvial and limestone formations and in the period from 2011 to 2016 years. Finding an answer to the question of whether rainfall can significantly affect the chemical quality of drinking water sources in the cities of Abadeh, Bavanat, Eqlid, Safashahr, Pasargad, Marvdasht and Zarghan and on the factors EC, PH, TDS, F, NO3 in formations And alluvial and limestone formation in the years 90 to 95? In this study, 208 wells were mentioned in cities with 96 alluvial loops and 112 wells with calcareous formations. According to Pearson correlation coefficient and p-pain results, the results showed that precipitation on changes in EC, PH, TDS NO3 is effective. In general and cumulative analysis of this factor, it has been shown that the effect of rainfall on changes in TDS, NO3 EC is significant and its relation is direct, and it is reversible on changes in pH. Also, the effect of rainfall on changes in F level is not significant, and these changes are more significant in karst and lime formations, meaning that the wells with Karst Formation with changing precipitation rates are more likely to change EC, PH, TDS NO3 Are. Manuscript profile

Open Access Article

3 - Investigation of Nano-particle in reduction of polymer adsorption on rock surface during reservoir flooding and reduction of optimum injected polymer concentration toward reservoir with an environmental approach
Majid Dastanian Naser Akhlaghi Olghi Seyed Jamal Sheykh Zakariyaee

Today's the mostly of oil reservoirs specially Iranian south-west oil reservoirs due to production from these reservoirs are at their second half of life. Water or gas injection at secondary enhanced oil recovery (EOR) in order to stabilize or reduction of pressure depl More

Today's the mostly of oil reservoirs specially Iranian south-west oil reservoirs due to production from these reservoirs are at their second half of life. Water or gas injection at secondary enhanced oil recovery (EOR) in order to stabilize or reduction of pressure depletion it will no longer be responsible for reducing production. Therefore, tertiary EOR methods are used to prevent the loss of production. One of the tertiary EOR methods is using chemical injections. Injection of chemicals into oil reservoirs is used to increase the viscosity of the injected fluid, to reduce the interfacial tension between the injected fluid and the fluid produced, as well as to change the wettability of the reservoir rock. One of these chemicals, which is mainly used in relatively high permeability reservoirs, is polymers that are used to increase the viscosity of the injected fluid and also increase the mobility ratio of the reservoir fluids. This leads to the relatively piston sweeping of the produced fluid in the reservoir and also the postponement of the moment to reach the breakthrough time. One of the main challenges in the injection of polymers into oil reservoirs is the absorption of these polymers on the reservoir rock, which in addition to reducing the polymer's effectiveness in the entire injection region, also increases the cost of injection. Therefore, in this study, the effect of nanoparticles in order to reduce the adsorption of polymers on the reservoir and therefore the less polymer needed to achieve a specific production in the reservoir and, consequently, to reduce the environmental damage in order to produce polymers and also to inject them into oil reservoirs have been dealt with. The results show a decrease in polymer adsorption by the nanoparticles studied. Manuscript profile

Open Access Article

4 - Investigation of Hydro Geochemical Changes in Groundwater Case Study: Hamedan-Bahar Plain
Sajad Fazel Tavasol Ali Ahmadi Mostafa Safari Komil Reza Dehghani

Investigating of the changes in groundwater quality in the planning and management of water resources in each region is of great importance. In order to analyze the water quality hydro chemical analysis of 26 shallow wells has been. The major ions and the physical param More

Investigating of the changes in groundwater quality in the planning and management of water resources in each region is of great importance. In order to analyze the water quality hydro chemical analysis of 26 shallow wells has been. The major ions and the physical parameters of the water samples were measured. With the aim of analyzing the concentration changes of ions, cluster analysis methods and saturation indices along with statistical analysis and spatial graphic methods were investigated. Results indicate that this plain encounters negative budget and a decrease in the quality of groundwater; and the chemical type and facies of water in this field is (ca-Hco3). Plain water resources are divided into three groups in terms of quality. Due to the influence of artificial recharge dams in areas of aquifer discharge, water quality has improved. All measured samples are under saturated with respect to anhydrite, and s upersaturated with respect to calcite and dolomite. Manuscript profile

Open Access Article

5 - Preconcentration of trace amounts of Ni(II) in waste water samples Islamshahr using modified Multiwall nano tube carbon
Mohammd Yari Ali Moghimi Narges Behzad Ali Yari Mahnaz Qomi

A sensitive and selective method for exteraction of trace amounts of Ni(II) in water samples based on the adsorption of Multi Wall Carbon NanoTube carboxyl. A new  methods technique using a disperse solid phase extraction (DSPE) with Multi Wall Carbon NanoTube carb More

A sensitive and selective method for exteraction of trace amounts of Ni(II) in water samples based on the adsorption of Multi Wall Carbon NanoTube carboxyl. A new  methods technique using a disperse solid phase extraction (DSPE) with Multi Wall Carbon NanoTube carboxyl as sorbent was developed for the preconcentration of trace amounts of Ni(II) inVaramin waste water  samples and was determined by flame atomic absorption spectrometry (FAAS). Some of the important parameters on the preconcentration and complex formation were selected and optimized. Under the optimized conditions the limit of detection (LOD) and relative standard deviation were 0.090µg.L-1,0.562 µg.L-1 and 1.99% respectively. The enrichment factor was 30 and the percentage of recovery was in the range of 95-100% .The method was successfully applied to the recovery of Ni2+in different type of water samples. of Multi Wall Carbon NanoTube carboxyl in this study is full of potential to use as an excellent adsorbent in the extraction method like solid phase extraction(SPE) and solid phase micro extraction(SPME).   Manuscript profile

Open Access Article

6 - Minimization of the deviation from the optimal cut-off grades in long-term production scheduling of open pit mines by using mixed integer programming
Ehsan Moosavi Reza Shirinabadi

The basic objective of long-term production planning to takes measures for implementing to extractive cut-off grades and short-term production planning. So, the most important tool to implement the strategic and long-term program in open pit mines is extractive cut-off More

The basic objective of long-term production planning to takes measures for implementing to extractive cut-off grades and short-term production planning. So, the most important tool to implement the strategic and long-term program in open pit mines is extractive cut-off grades. Proposed methods show from not mentioning to exact regulation the extractive cut-off grade at various periods. In long-term production planning optimization, the extractive cut-off grades necessity is the correct management of the ore sending to plant processing. In this paper, exhibit linear programming model in order to sequence of mining blocks estimation from mentioning to control the extractive cut-off grades. Long-term production planning model using mixed integer mathematical programming is formulated. The purpose of the proposed model, minimization the deviation extractive grades in planning terms. Which this major be careful the case setting the extractive grades in each time period based on an accepted grade of plant. In order to the validity of result modeling, Chadormalou Iron Mine was chosen as the case study. The result shows the obtained extractive cut-off grades from proposed model generates the high accuracy of the average grade of the processing plant in each planning period. Also, all available operational constraints have been satisfied Manuscript profile

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