Mathematical model for reactive transport of heavy metals in soil column: Based on PHREEQC and HP1 simulators

2017 ◽  
Vol 6 (1) ◽  
pp. 67-81
Author(s):  
Fatemeh Izadi Tameh ◽  
Gholamreza Asadollahfardi ◽  
Ahmad Khodadadi Darban
Keyword(s):  
Heavy Metals ◽  
Mathematical Model ◽  
Reactive Transport ◽  
Soil Column

Mathematical model for the calculation of potential health risk by heavy metals present in and on textiles

2007 ◽  
Vol 172 ◽  
pp. S240 ◽  
Author(s):  
Michaela Zeiner ◽  
Iva Rezic ◽  
Karl Dobianer ◽  
Ilse Steffan
Keyword(s):  
Heavy Metals ◽  
Mathematical Model ◽  
Health Risk ◽  
Potential Health ◽  
Potential Health Risk

scholarly journals Determination of transport parameters for heavy metal in residual compacted soil using two methodologies

2006 ◽  
Vol 33 (7) ◽  
pp. 912-917
Author(s):  
Izabel Christina Duarte Azevedo ◽  
Cleidimar Rejane Nascentes ◽  
Antonio Teixeira de Matos ◽  
Roberto Francisco de Azevedo
Keyword(s):  
Heavy Metals ◽  
Dispersion Coefficient ◽  
Soil Column ◽  
Optimization Procedure ◽  
Retardation Factor ◽  
Hydrodynamic Dispersion ◽  
Column Test ◽  
Transport Parameters ◽  
Compacted Soil ◽  
Cumulative Mass

Values of the hydrodynamic dispersion coefficient and retardation factor obtained using the traditional and cumulative mass methods of column test analysis for zinc, manganese, and cadmium in a compacted soil are compared. The soil under study is from the B horizon of a residual gneissic tropical soil used for construction of the liner for the sanitary landfill in the District of Visconde do Rio Branco, Minas Gerais (MG), Brazil. To evaluate the behavior of landfill leachate heavy metals through the soil, soil column tests were performed on samples of compacted soil. A computational program that uses an optimization procedure to generate values of the hydrodynamic dispersion coefficient and retardation factor was developed to facilitate interpretation of the results obtained by the cumulative mass method. Values of the retardation factor and hydrodynamic dispersion coefficient were not influenced by the method of determination, even when a reduced number of effluent samples was used by the cumulative mass method. The use of the cumulative mass method, based on a reduced number of pore volumes, reduces the time and cost involved in the tests.Key words: heavy metals, column test, cumulative mass method.

A new mathematical model for soil-column experiment and parameter identification

2006 ◽  
Vol 25 (S1) ◽  
pp. 210-210
Author(s):  
Gongsheng Li ◽  
De Yao ◽  
Fugui Yang ◽  
Xiaoqin Wang ◽  
Hongliang Liu
Keyword(s):  
Mathematical Model ◽  
Parameter Identification ◽  
Soil Column ◽  
Column Experiment ◽  
Soil Column Experiment

The addition of organic carbon and nitrate affects reactive transport of heavy metals in sandy aquifers

2011 ◽  
Vol 123 (3-4) ◽  
pp. 83-93 ◽  
Author(s):  
Yamini Satyawali ◽  
Piet Seuntjens ◽  
Sandra Van Roy ◽  
Ingeborg Joris ◽  
Silvia Vangeel ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Carbon ◽  
Reactive Transport ◽  
Sandy Aquifers

scholarly journals Method for predicting the dissemination of hazardous substances in the soil during long-term storage of galvanic waste

2022 ◽  
pp. 12-22
Author(s):  
Larisa Tretiakova ◽  
Liudmyla Mitiuk ◽  
Igor Panasiuk ◽  
Elina Rebuel
Keyword(s):  
Heavy Metals ◽  
Mathematical Model ◽  
Soil Salinity ◽  
Molecular Diffusion ◽  
Hazardous Substances ◽  
Depth Of Penetration ◽  
Long Term Storage ◽  
Harmful Substances ◽  
Term Storage

The problem of production waste storage in open areas of an enterprise with a galvanic shop for the production of chips and microchips has been investigated. The composition of the sludge obtained after sewage treatment of the production of the copper line was investigated. The aim of the article is to develop a mathematical model for predicting the distribution of compounds with heavy metals in the soil during long-term storage of galvanic sludge in open areas. Modeling the process of movement of salts from the earth's surface into the lower layers of the aeration zone occurs according to the laws of molecular diffusion. The method is developed on the basis of a mathematical model that makes it possible to estimate the spread over the depth of the ground and level of soil salinity over time using initial information about soil structure and its characteristics (molecular diffusion coefficient, volume humidity), annual volumes and conditions of sludge storage in the enterprise. Restrictions are set: the presence of harmful substances on the soil surface with a concentration that exceeds the permissible level; inadmissibility of harmful substances to aquifers. The practical use of the method made it possible to identify the main dangers during long-term storage of galvanic waste in open areas. The dynamics of soil salinity levels and the depth of penetration of heavy metals increase over twenty years of conservation has been determined, as well as the possibility of hazardous compounds entering groundwater has been assessed. Polyvinyl chloride packaging has a maximum life span of 15 years. Waste should not be stored in packages and in closed areas for more than 10 years. According to the prediction results, it can be stated that storage in landfills of galvanic waste for more than 15 years leads to significant salinization of the soil and creates conditions for an emergency situation, which is caused by harmful substances entering the water horizons. Recommendations for improving storage conditions are given and the need for recycling of industrial waste is substantiated

scholarly journals Prediction of acid mine drainage formation and zinc migration in the tailings dam of a closed mine, and possible countermeasures

2019 ◽  
Vol 268 ◽  
pp. 06003 ◽  
Author(s):  
Carlito Tabelin ◽  
Asuka Sasaki ◽  
Toshifumi Igarashi ◽  
Shingo Tomiyama ◽  
Mylah Villacorte-Tabelin ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Acid Mine Drainage ◽  
Reactive Transport ◽  
Mine Drainage ◽  
Economic Value ◽  
Abandoned Mines ◽  
Tailings Dam ◽  
Visual Modflow ◽  
Acid Mine

Acid mine drainage (AMD), the very acidic and highly contaminated leachate generated in closed/abandoned mines, is commonly managed by neutralization to raise the pH and precipitate most of the heavy metals. Although effective, this approach does not generate any product of economic value, so it is very costly and unsustainable in the long-term. Unfortunately, there are currently no effective alternatives to neutralization, and one way to improve the sustainability of this process is to reduce the volume of AMD generated and/or the concentration of heavy metals. The tailings dam investigated in this study is located in northern Hokkaido, Japan. Detailed characterization of borehole core samples showed that even after almost 40 years of exposure to the environment, the tailings still contain pyrite (FeS2) and substantial amounts of copper (Cu) and zinc (Zn). Reactive-transport modeling using Visual MODFLOW predicted that AMD quality would likely continue to deteriorate with time and that treatment should be continued for at least 1,000 years. The model also predicted that a barrier with low permeability installed downstream of the tailings dam or ground sealing techniques for recharge reduction could lower the volume of AMD and concentration of Zn from the site.

A physical–mathematical model for the transport of heavy metals and toxic matter from point sources by geogas microbubbles

2003 ◽  
Vol 161 (1-2) ◽  
pp. 139-149 ◽  
Author(s):  
Ziyong Zhou ◽  
Shu Tao ◽  
Fuliu Xu ◽  
R. Dawson
Keyword(s):  
Heavy Metals ◽  
Mathematical Model ◽  
Point Sources

Effect of heavy metals on microbial communities and enzymatic activity in soil column experiment

2006 ◽  
Vol 52 (2) ◽  
pp. 161-169 ◽  
Author(s):  
R. Vaisvalavicius ◽  
A. Motuzas ◽  
I. Prosycevas ◽  
L. Levinskaite ◽  
D. Zakarauskaite ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Enzymatic Activity ◽  
Microbial Communities ◽  
Soil Column ◽  
Column Experiment ◽  
Soil Column Experiment

scholarly journals Mathematical Model to Simulate the Transfer of Heavy Metals from Soil to Plant

2021 ◽  
Vol 13 (11) ◽  
pp. 6157
Author(s):  
Petru Cârdei ◽  
Cătălina Tudora ◽  
Valentin Vlăduț ◽  
Mirabela Augustina Pruteanu ◽  
Iuliana Găgeanu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Mathematical Model ◽  
Multiple Stressors ◽  
Experimental Studies ◽  
Chemical Species ◽  
Integrated System ◽  
Control Factors ◽  
Naturally Occurring ◽  
Optimal Harvest ◽  
Latent Effects

Heavy metals are naturally occurring elements, but their various applications have led to their wide circulation in the environment, raising concerns over their latent effects on the environment and human health. Their toxicity depends on numerous factors, including chemical species, concentration of heavy metal ions, environmental factors, etc. Experimental studies on the single or cumulative effects of heavy metals on plants are complex, time consuming and difficult to conduct. An alternative is mathematical modeling, which can include different factors into an integrated system and can predict plant and environmental behavior under multiple stressors. This paper presents a mathematical model that simulates the dependence of temperature, concentration of Zn in the soil and the subsequent bioaccumulation in lettuce (Lactuca sativa L.); respectively, the reaction of lettuce to Zn contamination. The main results consist of three mathematical models, based on systems of ordinary differential equations and checking their predictions with available experimental data. The models are applied to predict an optimal harvest time of lettuce with low concentration of Zn, in identifying the availability of the analyzed species to phytoremediation operations and the possibility of maneuvering certain control factors to reduce or increase the intensity of the bioaccumulation process.

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