Faramarz Doulati Ardejani - Academia.edu (original) (raw)

Papers by Faramarz Doulati Ardejani

DOAJ (DOAJ: Directory of Open Access Journals), Jun 1, 2013

Edge detection and edge enhancement techniques play an essential role in interpreting potential f... more Edge detection and edge enhancement techniques play an essential role in interpreting potential field data. This paper describes the application of various edge detection techniques to gravity data in order to delineate the edges of subsurface structures. The edge detection methods comprise analytic signal, total horizontal derivative (THDR), theta angle, tilt angle, hyperbolic of tilt angle (HTA), normalised total horizontal gradient (TDX) and normalised horizontal derivative (NTHD). The results showed that almost all filters delineated edges of anomalies successfully. However, the capability of these filters in edge detection decreased as the depth of sources increased. Of the edge enhancement filters, normalized standard deviation filter provided much better results in delineating deeper sources. The edge detection techniques were further applied on a real gravity data from the Gheshm sedimentary basin in the Persian Gulf in Iran. All filters specified a northeast-southwest structural trend. The THDR better outlined the structural morphology and trend. Moreover, it indicated the salt plugs much better than other filters. Analytic signal and THDR successfully enhanced the edges of the shorter wavelength residual structures. Normalized standard deviation (NSTD), TDX and hyperbolic of tilt angle (HTA) filters highlighted the likely fault pattern and lineaments, with a dominant northeast-southwest structural trend. This case study shows that the edge detection techniques provides valuable information for geologists and petroleum engineers to outline the horizontal location of geological sources including salt plugs and stand out buried faults, contacts and other tectonic and geological features.

Global Journal of Research In Engineering, Jun 5, 2018

This study has been focused on investigating a new index for the assessment of major ion enrichme... more This study has been focused on investigating a new index for the assessment of major ion enrichment. Also, this study has examined the temporal-physicochemical classification Model of parameters and the temporal-IEI (Ion Enrichment Index) Model from 1986-2010. The results have been presented in this study based on physicochemical water quality parameters determined in the Garmabdasht River in Golestan province. For the evaluation and classification of the Model, WHO recommendation has been used. Temporal physicochemical Model results have been examined, and most of the samples were less than authorized in the Model of pH, Cl, K, Mg, Na, and SO4 but in the Ca and HCO3 Model, approximately more than 70 percent of the samples were suitable. In addition, the TDS Model shows that in most cases, high TDS from tap water was dominated.

International. Journal of Mining & Geo-Engineering, Dec 1, 2012

Risk-based assessment methods are commonly used at the contaminated sites by hydrocarbon pollutan... more Risk-based assessment methods are commonly used at the contaminated sites by hydrocarbon pollutants. This paper presents the results of a two-dimensional finite volume model of reactive transport of biodegradable BTEX which have been developed for the saturated zone of an unconfined aquifer in the Pump station area of Tehran oil refinery, Iran. The model governing equations were numerically solved by modification of a general commercial software called PHOENICS. To reduce costs in general, many input parameters of a model are often approximated based on the used values in the contaminated sites with same conditions. It was not fully recognised the effect of errors in these inputs on modelling outputs. Thus, a sensitivity analysis was carried out to determine the influence of parameters variability on the results of model. For this analysis, the sensitivity of the model to changes in the dispersivity, distribution coefficient, parameters of Monod, Michaelis-Menten, first-and zero-order kinetics modes on the BTEX contaminant plume were examined by performing several simulations. It was found that the model is sensitive to changes in dispersivity and parameters of Michaelis-Menten, first-and zero-order kinetics model. On the other hand, the predictions for plumes assuming Monod kinetics are similar, even if different values for parameterization are chosen. The reason for this insensibility is that degradation is not limited by microbial kinetics in the simulation, but by dispersive mixing. Quantifying the effect of changes in model input parameters on the modelling results is essential when it is desired to recognise which model parameters are more vital on the fate and transport of reactive pollutants. Furthermore, this process can provide an insight into understanding pollutant transportation mechanisms.

Journal of Mining and Environment, Apr 1, 2020

Copper smelting and refinery factories are the final stages of a pyrometallurgical processing cha... more Copper smelting and refinery factories are the final stages of a pyrometallurgical processing chain, and they cause many environmental challenges around the world. One of the most common environmental problems of these factories is toxic emissions. These toxic gases have harmful effects on the vegetation, animal species, soils, and water resources around the factories. Phytoremediation can play an important role in the reduction of the adverse effects of environmental pollutions arising from copper smelting and refinery factories. In this paper, we first discuss different types of pollutions caused by copper metallurgical factories, and present the main research approaches and studies conducted on these factories. In the second part, we provide a summary and comparison of different remediation technologies used to reduce the environmental pollutions of these factories. Besides, the advantages and disadvantages of each method is also investigated. In the third part, we review the different aspects of the phytoremediation including the effective mechanisms, different types of plants, application environments, and the effective factors. The next part includes the selection of suitable plants for the phytoremediation process applied for copper metallurgical factories and investigation of the native and cultivated hyperaccumulator plants. In addition, different efficiency indices are introduced for evaluating the phytoremediation efficiency and selecting an appropriate hyperaccumulator plant. At the final stage, some appropriate plant species for various types of phytoremediation are introduced. The effects of different environmental stresses and the possibilities of integrating phytoremediation with other remediation technologies as well as the advantages and disadvantages of phytoremediation are eventually investigated.

Groundwater for Sustainable Development, Apr 1, 2020

Water shortage is one of the most critical problems all around the world, especially in arid and ... more Water shortage is one of the most critical problems all around the world, especially in arid and semi-arid regions. Using groundwater can be an efficient solution in such lands. Although significant care and appropriate water resource management strategies are required to be implemented. Nowadays, subsurface dams (SSD) are widely used worldwide since they are proved to have advantages over surface dams in some cases. Selection of the suitable site for SSD construction is critical. This selection is made based on advantages and disadvantages of each location. Multi-criteria decision-making methods (MCDM) is an efficient method for optimum site selection. In this study, 10 regions were chosen as alternatives for construction of subsurface dams in Isfahan province of Iran. These alternatives were then ranked using ELECTRE I, II and modified ELECTRE III based on geological, hydrological, climatological and socio-economical criteria. Results from different ELECTRE methods are combined by applying the grade average, and Borda and Copeland ranking strategies. Application of an advanced MCDM method reduced uncertainties in subsurface dams (SSD) site selection. Alternative 5 (Hoseinabad) was introduced as the best location for subsurface dam construction. This methodology can be used as a basis for more detailed field investigations

Bioresource Technology Reports, Sep 1, 2021

Abstract The oxidation of sulfide minerals is of central importance due to the acid mine drainage... more Abstract The oxidation of sulfide minerals is of central importance due to the acid mine drainage (AMD) production. The bio-oxidation of pyrrhotite, pyrite, marcasite, and arsenopyrite was carried out with mesophilic bacteria (Acidithiobacillus ferrooxidans, A. thiooxidans, and Leptospirillum ferrooxidans) at 34 °C for 30 days. Bio-oxidation tests showed that marcasite has a high potential in producing AMD compared to pyrrhotite. Arsenopyrite has different behavior in the presence and the absence of additives (i.e., FeSO4·7H2O and sulfur). While the absence of additives increased the nickel and zinc dissolution, their presence increased the total iron dissolution. Sulfur and jarosite were observed on the surfaces of pyrrhotite and arsenopyrite. With the formation of these passivation layers, the continuous iron extraction is effectively suppressed. This study is helpful to comparatively evaluate the AMD production of sulfide minerals in an oxidizing environment and to study the effects of passivation layers on their biooxidation in different conditions.

Chemosphere, May 1, 2020

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

$Research paper thumbnail of A comparative and coupled study of the application of Dempster-Shafer, fuzzy overlay and FAHP methods for groundwater potential mapping in a fractured medium of a mine site$

Earth Science Informatics, Apr 13, 2023

Encyclopedia of earth sciences, 2021

Journal of Geology & Geophysics, 2021

International Journal of Environmental Research, Jul 1, 2015

This paper investigates the importance of considering biomass growth and decay for predicting a f... more This paper investigates the importance of considering biomass growth and decay for predicting a field scale microbial degradation of BTEX plume in an unconfined aquifer system in the Pump station area of Tehran oil refinery (TOR), Iran. A two-dimensional finite volume model has been presented to predict multispecies reactive transport incorporating physical, chemical and biological processes in the saturated zone of the aquifer. A multipurpose commercial software called PHOENICS was modified to solve model equations. A complex Monod approach considering microbial growth and decay employed to describe the biodegradation of BTEX. The results of Monod approach was compared to those results obtained by three kinetics models including zero-order, first-order and Michaelis-Menten expressions that do not support biomass growth and decay. Monod approach predicted a further spreading of the plume. Other kinitics models underestimated the concentrations of BTEX plume, due to neglecting a high bacterial population and increased uptake rate. They are not appropriate to simulate tansport of biodegradable BTEX in the study aquifer. The model predictions agree well with the field measurements with an average error of 5%; describing that the Monod kinetics was well able to simulate the behaviour of the BTEX plume due to supporting bacterial population and considering oxygen as the electron acceptor.

Environmental Impact Assessment Review, Jul 1, 2020

The main problem of traditional methods of environmental impact assessment (EIA) is that in most ... more The main problem of traditional methods of environmental impact assessment (EIA) is that in most of the existing algorithms and methods, such as Leopold, Folchi and RIAM, the main attention is to the destructive effects of the proposed plan, and the advantages of the industrial project are less noticeable. This has led to a permanent challenge between environmental organizations and industrial stakeholders. Data envelopment analysis (DEA) is a new approach of assessing the industrial units. Besides, it considers the positive economic and social impacts of the project and provides a comprehensive assessment of the industrial unit. With this approach, the environmental impacts of an industrial unit have been considered as "inputs" and its positive economic and social impacts considered as the "outputs" of the DEA models. Therefore, the problem of impact assessment changes into a DEA model. In the present study, the Alborz Sharghi Coal washing plant in northern Iran has been considered as a case study for implementing the DEA-EIA approach, and 19 plant activities and 11 environmental components have been used to evaluate the environmental effects of the plant. To solve the EIA problem, two commonly used DEA approaches, called CRS (constant returns to scale) and VRS (variable returns to scale), have been used. The DEA results identified the critical environmental components of the plant that should be considered seriously. Also, drawing the "potential improvement" diagram in the DEA method is an effective tool for determining the high risk activities of the factory and applying them in development plans. Besides, using the VRS model with maximize-output approach showed that some of the plant activities had the most differences with optimal mode and these components should be considered in future development plans. Finally, it can be concluded that, assessing the environmental impacts of the mineral industries with VRS maximize-output approach, is closer to the concept of sustainable development and cost-benefit analysis.

Arabian journal for science and engineering, Apr 19, 2014

Understanding the response of a particular exploration target necessitates modelling the response... more Understanding the response of a particular exploration target necessitates modelling the response from other sources that are of less interest. Three-dimensional (3D) modelling can provide accurate results of targets of interest with less calculation error due to the simultaneous computations of the responses from anomalous sources. This paper presents a 3D multi-body model to match the observed gravity data in the seashore and shallow waters from east of the Gheshm Island to the Hormoz Island and its northern seashores. A commercial software called ModelVision Pro was used to perform modelling process to determine the geometry and physical properties of geological structures and oil traps. The 3D modelling results were compared with the geological and depth information from wells. The results of anomaly separation identified few gravity lows due to the salt plug intrusion. The depth of the anomalous sources and other geological structures were determined. An approximate depth of 1,800 m was predicted for depth to the top of the source N next to the Gheshm salt plug. This correlates fine with the depth obtained from well Gh 2 (1,660 m); showing a relative error of 8.4 %. The results obtained from this

Environment, Development and Sustainability, Nov 11, 2019

Developing a coupled environmental impact assessment (C-EIA) method with sustainable development ... more Developing a coupled environmental impact assessment (C-EIA) method with sustainable development approach for environmental analysis in coal industries Sajjad Mohebali, et al. [full author details at the end of the article]

Sustainable Water Resources Management, Jan 27, 2020

Subsurface dams constitute an affordable and effective method for the sustainable development and... more Subsurface dams constitute an affordable and effective method for the sustainable development and management of groundwater resources when constructed on suitable sites. Such dams have rarely been constructed in crystalline rock areas and to best of our knowledge, geographic information system (GIS) has never been used in any methodology for locating suitable sites for constructing these dams. This paper presents a new methodology to locate suitable sites for the construction of subsurface dams using GIS software supported by groundwater balance modelling in a study area Boda-Kalvsvik, Sweden. Groundwater resources were calculated based on digitized geological data and assumptions regarding stratigraphic layering taken from well archive data and geological maps. These estimates were then compared with future extractions for domestic water supply using a temporally dynamic water balance model. Suitability analyses for subsurface dams were based on calculated topographic wetness index (TWI) values and geological data, including stratigraphic information. Groundwater balance calculations indicated that many of the most populated areas were susceptible to frequent water supply shortages. Of the 34 sub-catchments within the study area: ten were over-extracted, nine did not have any water supply demand at all, one was self-sufficient and the remaining 14 were able to meet the water supply demand with surplus storage capacity. Six suitable sites for the construction of subsurface dams were suggested in the vicinity of the over-extracted sites based on suitability analysis and groundwater balance estimates. The new methodology shows encouraging results for regions with humid climate but having limited natural water storage capacities. The developed methodology can be used as a preliminary planning step for subsurface dam construction, establishing a base for more detailed field investigations.

Acidity 48 2.5 Acid mine drainage (A M D) or acid rock drainage (A R D) vii 2.5.1 General conside... more Acidity 48 2.5 Acid mine drainage (A M D) or acid rock drainage (A R D) vii 2.5.1 General consideration 48 2.5.2 Acid mine drainage (A M D) 49 2.5.3 Oxidation reactions and acid generation 2.5.4 The role of the buffering minerals 2.5.5 Impacts of acid mine drainage on the receiving environment 54 2.5.6 Heavy metals 2.6 Acid mine drainage neutralisation methods 2.6.1 Introduction 2.6.2 Acid mine drainage neutralising agents 57 2.6.3 Active treatment systems 58 2.6.4 Passive treatment systems 2.6.5 Passive anoxic limestone drains (PALD) 2.6.6 Open limestone channels 60 2.6.7 Wetland systems for acid mine drainage treatment 61 (a) Aerobic wetland systems 64 (b) Anaerobic wetland systems 65 (c) Manganese and Aluminium removal 66 2.7 Conclusions CHAPTER THREE: ANALYTICAL METHODS OF PREDICTION OF GROUNDWATER INFLOW TO OPEN CUT COAL MINES 3.1 Introduction 69 3.2 Sources of water inflow in surface mines 70 3.2.1 Water inflow from direct precipitation, surface water and runoff 70 3.2.2 Groundwater inflow 71 3.3 Types of inflow 72 3.4 Prediction of groundwater inflow rate into surface mining excavation 76 3.5 Aquifer type, its characteristics, flow regime and mining excavation 77 3.6 Idealised hydrogeological profiles related to surface mining 3.6.1 One-regime flow to a surface mining excavation 3.6.2 Two-regimes flow into a surface mining excavation 3.6.3 Three-regimes flow of groundwater to the surface mining excavation 80 viii 3.7 Analytical methods for calculation of surface mining excavation inflow rate 80 3.7.1 Equivalent well approach (E W A) 81 (a) Analytical groundwater inflow models based on E W A 82 (b) Limitations of equivalent well approach 95 3.7.2 Two-Dimensional Flow Approach 96 (a) Modified two-dimensional flow approach 101 (b) Limitations of two-dimensional flow equations 105 3.8 Limitations of analytical approaches 105 3.9 Conclusions 106 CHAPTER FOUR: A FINITE ELEMENT MODEL FOR GROUNDWATER INFLOW AND REBOUND PREDICTION IN OPEN CUT MINES 4.1 Introduction 108 4.2 Types of models 109 4.2.1 Numerical methods 4.2.2 Finite difference method (FD) Ill 4.2.3 Finite element method (FE) 113 4.2.4 Finite volume method (FV) 4.3 General considerations about S E E P A V 114 4.3.1 Applications 4.3.2 Formulation 115 4.4 Groundwater flow models 116 4.4.1 General considerations 116 4.4.2 Hydrogeological characteristics of backfilled open cut mines 118 (a) Lithology of the spoil 119 (b) The method of mining and topography 119 (c) Effects of spoil age 119 4.4.3 Hydraulic parameters of surface mine spoil (a) Permeability and transmissivity 120 (b) Porosity 121 (c) Groundwater velocity 122 ix 4.4.4 The flow equation 122 4.5 Governing equation for formulation of S E E P A V 124 4.6 Boundary conditions 127 4.7 Galerkin approximation procedure 129 4.7.1 Finite element discretisation 130 4.8 Time integration technique 133 4.9 Conclusions 134

Journal of Material Cycles and Waste Management, Mar 18, 2023

The accuracy of an exploration method depends on the accuracy of anomaly determination and anomal... more The accuracy of an exploration method depends on the accuracy of anomaly determination and anomaly separation techniques. This paper investigates the results of gravity anomaly separation in an area with regular survey grid net using fractal method. The full logarithmic diagram of gravity values versus area was used to evaluate the threshold values and to determine the fractal dimension. The data distribution, spatial and geometric characteristics of exploration data are important parameters in the fractal model. So these results were compared with the concentration-area fractal model for stream sediments geochemistry data (in a gold mineralized area) with irregular network survey. A few data with high anomalous values in irregular network survey were shown fractal dimension variations that were not referred to real anomalies. Based on the current research, the network of the survey is another item, which affects the accuracy of the anomaly separation and the systematic network survey was shown better results in anomaly separation based on the fractal methods.

Mine Water and The Environment, Aug 2, 2021

The effect of the electrokinetic process on the extraction of trapped water was evaluated in the ... more The effect of the electrokinetic process on the extraction of trapped water was evaluated in the Miduk copper mine’s tailings slurry. The effect of the dewatering process on copper removal was also studied. The initial electroosmotic permeability was determined using a one-dimensional cell. In the next step, the effect of voltage and polarity reversal was evaluated for three scenarios: T1 (2 V/cm), T2 (2 V/cm), and T3 (1 V/cm). In addition, the polarity reversal method was applied to T2 and T3. To compare the amount of water extraction and energy consumption, three indices were considered and calculated: index of dry tone, water extraction, and normal water extraction. Moreover, the effect of electrokinetics on the final moisture content, physicochemical variation, and chemical composition were investigated. The results indicated that the calculated electroosmotic permeability ranged from 1.23 × 10–9 to 1.36 × 10–9 m2/V·S, which is acceptable for electrokinetic experiments. The water extraction experiments showed average flow rates of 1.68, 1.84, and 1.73 mL/h in T1, T2, and T3, respectively. The maximum amount of water extracted in T2 was ≈ 6% more than in T3. However, considering electric energy consumption, the highest efficiency of water extraction was achieved by applying a voltage gradient of 1 V/cm for 24 h. Consequently, polarity reversal affected the water extraction efficiency by reducing energy consumption. Furthermore, moisture reduction due to the dewatering process decreased the pH variation and copper release and transport. Roughly 35% of the extractable copper was removed on the anode side of T2, which was determined to be the most efficient for remediation.