Biostimulation of Petroleum-Contaminated Soils with Synthetic and Natural Sources of NPK Fertilizer

Dehnavi, Seyed Mohsen; Ebrahimipour, Gholamhossein

doi:10.1080/15320383.2023.2209186

Cited by 2 publications

(1 citation statement)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The benzene and toluene retention within the silt has a significant effect on BTEX migration, mainly because of BTEX adsorption and dissolution from the porous media. Adsorption and dissolution are influenced by hydro-chemical and geological characteristics [ 39 , 47 , 48 ]. Parameters such as pH, initial porosity, specific surface area, organic matter content, and media size were subjected to factor analysis.…”

Section: Discussionmentioning

confidence: 99%

The Migration Mechanism of BTEX in Single- and Double-Lithology Soil Columns under Groundwater Table Fluctuation

Zheng,

Yang,

et al. 2023

Toxics

View full text Add to dashboard Cite

The migration of light non-aqueous phase liquids (LNAPLs) trapped in porous media is a complex phenomenon. Groundwater table fluctuation can not only affect contaminant migration but also redox conditions, bacterial communities, and contaminant degradation. Understanding LNAPLs’ (e.g., benzene, toluene, ethylbenzene, and xylene (BTEX)) behavior within porous media is critical for the high efficiency of most in situ remediation systems. A laboratory study of single- and double-lithology soil column investigation of the groundwater table fluctuation effect on BTEX transport, using benzene and toluene as typical compounds, in a typical representative model of aquifers subjected to water table fluctuation was undertaken in this study. The results show that benzene and toluene migration in single-lithology soil columns packed with sand was mainly affected by flushing due to the hydraulic force induced by water table fluctuations and that the double-lithology soil column packed with sand and silt was significantly affected by retention due to the higher adsorption induced by 10 cm of silt. The dissolution mainly correlated with the BTEX migration in saturated zones, and the contaminant concentration increased when the water table fell and decreased when the water table rose. For a contaminated site with a single-lithology structure consisting of sand, more attention should be paid to organic contaminant removal within the groundwater, and a double-lithology structure containing silt is more suited to the removal of organic contaminants from the silt layer. The difference in biodegradation kinetics between the groundwater table fluctuation (GTF) zone and the saturated zone should be better understood for the remediation of BTEX compounds.

show abstract

Section: Discussionmentioning

confidence: 99%