Removal of heavy metals in wet soil matrix

Development of risk based soil quality standards for Turkey İpek, Hatice Meltem; Ünlü, Kahraman; Department of Environmental Engineering (2011) Soil quality standards (SQSs) are one of the most important elements of management system for contaminated sites. In order to manage risks associated with soil contamination, risk based SQSs are used worldwide. However, in Turkey, the Soil Pollution Control Regulation in force was focusing mainly on the use of stabilized sludge on soil and was including standards for a limited number of parameters, mainly metals and some organic chemicals. Thus, existing SQSs were far away from providing common criteria for...
Utilization of borax sludge in soft subgrade soil stabilization Ceylan, Can; Güler, Murat; Department of Civil Engineering (2015) As a result of its unfavorable natural behavior (e.g., high shrinkage or swelling capacity, weakness, excessive plasticity, poor grading) soft sub-grade soils are not generally preferred in road constructions. Chemical stabilization is used as a solution to improve engineering properties of the weak soil. This study aimed at investigation of stabilization of a soft sub-grade soil by using Borax Sludge (from ETĠ Maden ĠĢletmeleri). The index properties (e.g. Atterberg limits, specific gravity and sieve analy...
Stabilization of an expansive soil using phosphogypsum Özkan, İlyas; Çokça, Erdal; Department of Civil Engineering (2015) Expansive soils are a worldwide problem that poses several challenges for civil engineers. Such soils swell when given an access to water and shrink when they dry out. The most common and economical method for stabilizing these soils is using admixtures that prevent volume changes. Studies for treatment of expansive soils with phosphogypsum are very limited in literature. In this study the effect of phosphogypsum (PG) in reducing the swelling potential is examined. The expansive soil was prepared in the lab...
Behavior of pollutants percolation in homogeneous porous media Sepehri, Shirin; Durgut, İsmail; Okandan, Ender; Department of Petroleum and Natural Gas Engineering (2016) Spillage of petroleum products in soil, rivers and lakes is a problem since the advent of the petroleum era. Contamination of groundwater is one of the most important hazard of spill because it is a threat to animals, plants as well as human life. Fingerprinting of oil spills plays an important role in order to select the best treatment and cleanup method. Soil type, amount and type of contaminant, weathering conditions such as rainfall and wind are important factors that influence soil contamination. In th...
Effective Stress and Shear Strength of Moist Uniform Spheres Toker, Nabi Kartal; Culligan, Patricia J. (Wiley, 2014-05-01) In continuum soil mechanics, the mechanical behavior of an element of soil is related to the effective stress, which is a measure of the average stress transmitted through the solid matrix in the form of contact stresses. In unsaturated soils, the coexistence of water and air within the soil pore space complicates this concept because the microscopic distribution of each fluid phase in soil pores cannot be known. Because it is thus not possible to physically measure effective stress in unsaturated soils, it...

Citation Formats

O. Altın, “Removal of heavy metals in wet soil matrix,” Ph.D. - Doctoral Program, Middle East Technical University, 1997.