نتایج جستجو برای: soil remediation

تعداد نتایج: 188839  

Journal: Pollution 2017

During the last decade, the expansion of urbanization and industrial activities caused serious environmental problems such as soil pollution. Novel technologies are required to remediate soil contamination with toxic contaminants, including heavy metals and organic pollutants. In recent years, there have been increasing attempts to improve soil remediation efficiency. Electrokinetic (EK) is an ...

Journal: :Journal of hazardous materials 2011
Ying-Ying Gu Albert T Yeung

The sorption/desorption characteristics of heavy metals onto/from soil particle surfaces are the primary factors controlling the success of the remediation of heavy-metal contaminated soils. These characteristics are pH-dependent, chemical-specific, and reversible; and can be modified by enhancement agents such as chelates and surfactants. In this study, batch experiments were conducted to eval...

2016
Kristine B. Pedersen Tore Lejon Pernille E. Jensen Lisbeth M. Ottosen

A highly oil-polluted soil from Krasnoe in North-West Russia was used to investigate the degradation of organic pollutants during electrodialytic remediation. Removal efficiencies were up to 70 % for total hydrocarbons (THC) and up to 65 % for polyaromatic hydrocarbons (PAH). Relatively more of the lighter PAH compounds and THC fractions were degraded. A principal component analysis (PCA) revea...

2001
Z. Shi L. E. Erickson

370 MODEL DEVELOPMENT AND SIMULATION OF IN SITU STABILIZATION IN LEAD-CONTAMINATED SOILS Z. Shi and L.E. Erickson 105 Durland Hall, Department of Chemical Engineering, Kansas State University, Manhattan, KS 66506; Phone: (785) 532-4323, Email: [email protected]; Phone: (785) 532-4313, Email: [email protected] ABSTRACT Stabilization and remediation of lead-contaminated soils have received considerable ...

2015
Chi Zhang Xiao Chen Yingyu Tan Yijian Feng Zhong Zhong

Semi Volatile Organic Compounds (SVOCs) contamination in soil was a widespread problem in China due to industrial pollutants leak and discharge. A pilot study of SVE and related combination techniques was demonstrated for soil contaminated with SVOCs. A miniaturization SVE system was applied in research and performance of this extraction system was measurement. The results of the field test sho...

During the last decade, the expansion of urbanization and industrial activities caused serious environmental problems such as soil pollution. Novel technologies are required to remediate soil contamination with toxic contaminants, including heavy metals and organic pollutants. In recent years, there have been increasing attempts to improve soil remediation efficiency. Electrokinetic (EK) is an ...

Journal: :International Journal of Environmental Research and Public Health 2018

2014
Kyunghoi Kim In-Cheol Lee Sung-Hoon Ryu Tadashi Saito Tadashi Hibino

− This paper aims to explain the safety assessment and remediation mechanism of Granulated Coal Ash (GCA) as a material for the remediation of coastal sediments and to evaluate the improvement of the sediment in Kaita Bay, where GCA was applied. The concentrations of heavy metal contained in GCA and the dissolved amounts of heavy metal from GCA satisfied the criteria for soil and water pollutio...

2002
X.-D. Huang

A number of techniques, both mechanical and biological, have been investigated for the remediation of persistent organic contaminants from soils. However, most of these techniques have been applied independently. As a consequence of using only one process, remediation usually is slow for persistent organic contaminants. To improve remediation, a few techniques that complement different aspects ...

A mathematical model has been simulated to describe natural in situ bioremediation of contaminated soil. The model equations consist of a system of three non-linear partial differential equations. Sensitivity analysis conducted by numerically solving them, has demonstrated the effect of initial contaminant concentration on the time and mechanism of remediation. The result of simulation indicate...

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