期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：7
页码：6561
DOI：10.15680/IJIRSET.2015.0407189
出版社：S&S Publications
摘要：In this study, it is proposed to obtain breakthrough curves commonly occurring lead ions in any effluentsthrough locally available soil amended with 10% bentonite and determine the diffusion coefficients. The theoreticalbreakthrough curves of migrating ions in the soil column experiment are generated using mathematical equationapplying considering effective diffusion coefficients alone, knowing soil parameters and hydraulic datas. These curvesare then compared with experimental curves. In cases where the theoretical and experimental breakthrough curve donot match, there would be need to consider other parameter – retardation factor along with diffusion coefficient.Theoretical curves are generated for sets of diffusion coefficient and retardation factor. The sets which give theoreticalcurve close to experimentally determined breakthrough curves are accepted. Thus it may be possible to bring out thecondition for the dominance of diffusion coefficient and retardation factor. Then knowing the values of diffusioncoefficient and retardation factor along with soil porosity and hydraulic gradient it is possible to predict thebreakthrough times of different ions in the soil. In this work the breakthrough times of lead ion for the soil of 1m and0.5m are established. The studies can be extended for any ion or soil after establishing diffusion coefficient andretardation for the concerned ions in the selected liner under different hydrological regimes.
