A course delivery method by using a software to predict contaminant migration through a soil layer

Date

2018-09-01

Author

AKTAŞ, Tugce
Çokça, Erdal

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

212
views

0
downloads

The authors propose a course delivery method for the contaminant transport through a saturated soil layer to explain contamination of soils in the Environmental Geotechnology course. In civil and environmental engineering education, analytical simulation models help students to understand the processes. MATLAB copy-based simulation method is proposed in this paper, to enhance learning of students of contaminant migration phenomena, and the simulation program is written by the students within the course based on an existing analytical solution for two-dimensional transport of contaminants in a saturated soil layer. Students use systematic, step-by-step problem solving approach while identifying, formulating and solving the contaminant migration problem. The program is written for pulse source and includes advective and dispersive transport as well as sorption and the simulation is used to obtain the profiles of contaminant concentration as a function of distance from the source and time for a steady groundwater velocity. It is shown that the contaminant concentration profiles obtained by simulation demonstrate the processes involved, by this way, the software tool integrates with the rest of the course content. It was seen by the author that, almost all of the students, who are taking Environmental Geotechnology course, could write matlab codes for contaminant migration if guided properly by the instructor/assistant. In this regard, it seems important to conduct studies which will allow students to increase their matlab programming practice. Also the use of the computer simulation encourages the students to ask what if questions and to carry out parametric studies and to learn by discovery

Subject Keywords

Computer program, Contaminant migration, Modeling, Simulation, Soil

URI

https://hdl.handle.net/11511/44191

Journal

COMPUTER APPLICATIONS IN ENGINEERING EDUCATION

DOI

https://doi.org/10.1002/cae.22027

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

A New Isotropic Specimen Preparation Method from Slurry for both Saturated and Unsaturated Triaxial Testing of a Low-Plasticity Silt Ahmadi-Naghadeh, Reza; Toker, Nabi Kartal (ASTM International, 2019-07-01) A new procedure for the preparation of low-plasticity silt specimens that are isotropically reconstituted from slurry is developed for use in both saturated and unsaturated soil testing. Spatial variations of the water content and grain size distribution were examined to confirm the uniformity of the specimens (regarding void radio and segregation). The new preparation method results in a homogeneous specimen, which has a simple stress history. The repeatability of the proposed method in preparing identical...
A computer program for the analysis of 1-D contaminant migration through a soil layer Çokça, Erdal (Elsevier BV, 2003-01-01) The physical and chemical processes that influence contaminant transport through a saturated soil layer are presented. The computer program (1DContr) was developed based on existing analytical solutions for one-dimensional transport of contaminants in a saturated soil layer. The computer program is given for pulse and continuous source. The formulation includes advective and dispersive transport as well as sorption and first order transformation. The computer program that is based on analytical solutions is...
Tracking transformation processes of organic micropollutants in aquatic environments using multi-element isotope fractionation analysis Hofstetter, Thomas B.; Bolotin, Jakov; Skarpeli-Liati, Marita; Wijker, Reto; Kurt, Zöhre; Nishino, Shirley F.; Spain, Jim C. (Elsevier BV, 2011-06-01) The quantitative description of enzymatic or abiotic transformations of man-made organic micropollutants in rivers, lakes, and groundwaters is one of the major challenges associated with the risk assessment of water resource contamination. Compound-specific isotope analysis enables one to identify (bio)degradation pathways based on changes in the contaminants' stable isotope ratios even if multiple reactive and non-reactive processes cause concentrations to decrease. Here, we investigated how the magnitude ...
AN INTEGRATED MODELING APPROACH FOR ASSESSING THE IMPACTS OF A NATURAL GAS-FIRED POWER-PLANT ON SOIL ACIDIFICATION KILIC, B; KAYIN, S; MUKHALLALATI, L; SOYUPAK, S; ONDER, K; YURTERI, C (1994-11-01) Environmental impacts of a proposed natural gas-fired power plant was assessed by coupling an atmospheric deposition model with a soil acidification model. Long-term and short-term impacts of atmospheric dispersion and deposition of pollutants, especially NO(x), on the quality of air were estimated within the local scale using a short term dispersion model. The long-term soil response to acid deposition was simulated by a model which predicts the number of years required to reach critical soil pH values.
A semi-quantitative method to estimate organic matter content of lake sediments using ITRAX micro-XRF core scanner data Avşar, Ulaş; Jonsson, Sigurjon; De Batist, Marc; Fagel, Nathalie; Geirsdttir, Aslaug; Miller, Gifford (null; 2014-05-02) Organic matter (OM) content of lake sediments may provide valuable information about the past depositional processes and environments. It is most commonly obtained by loss-on-ignition (LOI550) method, which is based on burning the OM in sediments at 550 °C for 4 hours. In addition to LOI550, OM content of sediments can be determined by total organic carbon (TOC) measurements by elemental analyzers. LOI550 is a simple and inexpensive method by which upto 50 samples can be measured per day. However, it is not...

Citation Formats

T. AKTAŞ and E. Çokça, “A course delivery method by using a software to predict contaminant migration through a soil layer,” COMPUTER APPLICATIONS IN ENGINEERING EDUCATION, pp. 1324–1335, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/44191.