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Z. Li, L. Li, and G. P. J. Chen, “Bioavailability of Cd in a soil–rice system in China: soil type versus genotype effects,” Plant Soil, vol. 271, no. 1, pp. 165-173, 2005.

has been cited by the following article:

Article

Gasoline Removal from Silt Sandy Soils via in Situ Technologies with an Emphasis on Factors Influencing Soil Vapor Extraction

1Research Laboratory of Water and Environmental Engineering, University of Kara, BP 404, Togo

2Laboratory of Applied Hydrology and Environment, Faculty of Science, University of Lome, BP. 1515;Beijing Key Laboratory of Water Resources & Environmental Engineering, China University of Geosciences (Beijing), Beijing 100083, P.R. China

3Laboratory of Applied Hydrology and Environment, Faculty of Science, University of Lome, BP. 1515

4Applied Chemistry Study and Research Laboratory, Polytechnic School of Abomey-Calavi University, 01 BP. 2009, Benin

5Beijing Key Laboratory of Water Resources & Environmental Engineering, China University of Geosciences (Beijing), Beijing 100083, P.R. China


American Journal of Environmental Protection. 2022, Vol. 10 No. 2, 67-72
DOI: 10.12691/env-10-2-3
Copyright © 2022 Science and Education Publishing

Cite this paper:
Alfa-Sika Mande Seyf-Laye, Tchakala Ibrahim, Balogoun Kolawole Clement, Akpataku Kossitse Venyo, Bawa Limam Moctar, Chen Honghan. Gasoline Removal from Silt Sandy Soils via in Situ Technologies with an Emphasis on Factors Influencing Soil Vapor Extraction. American Journal of Environmental Protection. 2022; 10(2):67-72. doi: 10.12691/env-10-2-3.

Correspondence to: Alfa-Sika  Mande Seyf-Laye, Research Laboratory of Water and Environmental Engineering, University of Kara, BP 404, Togo. Email: seyf009@yahoo.ca

Abstract

Soil vapor extraction (SVE) is a common and typically effective physical treatment process for remediation of volatile contaminants in unsaturated soils. SVE process was evaluated in this study to determine its effectiveness for gasoline removal using column tests with real soils. This paper serves five main purposes: it evaluates the influence of air injection and air extraction, continuous and intermittent air extraction, initial concentration of gasoline, soil water content and air flow rate on SVE for gasoline removal from sandy soils. Comparison of injection methods indicated that extraction was more efficient when air introduced from the top of the column rather than the bottom. The initial concentration of gasoline in the soil had a significant effect on the rate of extraction and the overall removal of TPH, with reduced removal efficiency observed when the initial gasoline concentration increased. It was found that continuous air extraction has the highest efficiency for gasoline removal from sandy soils. Higher venting velocities led to more rapid removal of gasoline from sandy soil columns. In addition, increased soil moisture content led to faster gasoline extraction rates. It was found that SVP has the highest efficiency for gasoline removal from sandy soils and can remediate the vadose zone effectively to meet the soil guideline values for protection of groundwater.

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