Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The migration behavior of pollutants is affected by consolidation and temperature when using thermal desorption technology to clean contaminated sites. Based on a one-dimensional consolidation model for unsaturated soil and the traditional heat conduction equation, a pollutant transport model accounting for the combined effects of consolidation and temperature was established in this paper. An analytical solution was obtained by using the separation of variables method and the integral transformation method. In addition, the correctness of the proposed model was verified via a comparison between the existing analytical solution and the theoretical model. Finally, adopting benzene as the research object, the influence of different factors on pollutant migration was studied. It was found that the growth rate of the pollutant concentration increased with increasing consolidation pressure, and the final pollutant concentration decreased with increasing consolidation pressure. The pollutant concentration increment due to temperature first increased and then decreased with increasing migration distance. The higher the Soret coefficient and volumetric moisture content are, the higher the pollutant concentration.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jconhyd.2024.104326 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Wild, scenic, and toxic: Recent degradation of an iconic Arctic watershed with permafrost thaw.
Proc Natl Acad Sci U S A
September 2025
Colorado State University, Department of Forest and Rangeland Stewardship, Fort Collins, CO 80523.
The streams of Alaska's Brooks Range lie within a vast (~14M ha) tract of protected wilderness and have long supported both resident and anadromous fish. However, dozens of historically clear streams have recently turned orange and turbid. Thawing permafrost is thought to have exposed sulfide minerals to weathering, delivering iron and other potentially toxic metals to aquatic ecosystems.
View Article and Find Full Text PDFPolystyrene Nanoplastics Regulate Silicon Cycling and Biosilica Deposition in Marine .
Environ Sci Technol
September 2025
Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong 266237, P. R. China.
Nanoplastics are emerging pollutants with the potential to disrupt the microbial physiology and biogeochemical cycles in marine ecosystems. However, their influence on silicon cycling in cyanobacteria remains poorly understood. Here, we investigate how amine-modified polystyrene nanoplastics (PS-NH) regulate silicon transport and biosilica deposition in sp.
View Article and Find Full Text PDFAmbient Air Pollution and the Severity of Alzheimer Disease Neuropathology.
JAMA Neurol
September 2025
Translational Neuropathology Research Laboratory, Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia.
Importance: Exposure to fine particulate matter air pollution (PM2.5) may increase risk for dementia. It is unknown whether this association is mediated by dementia-related neuropathologic change found at autopsy.
View Article and Find Full Text PDFCharacterization on Respiratory Bioaccessibility of Organophosphate Esters Based on a Mouth-Throat Model, Exhaled Breath Condensate, and Sputum.
Environ Sci Technol
September 2025
School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang 453007, China.
To characterize the bioaccessibility of inhaled organophosphate esters (OPEs) in the respiratory tract, we employed a highly idealized mouth-throat model to investigate the occurrence, distribution, and deposition of 17 OPEs in airborne particulate matter (PM, PM, and PM; = 80 pairs) and gas phases ( = 48) under gradient temperature and humidity. OPEs concentrations were also measured in exhaled breath condensate (EBC; = 50) and sputum ( = 30) from 30 adults. Total median ∑OPEs concentrations in inhaled air were 4.
View Article and Find Full Text PDFMovement Mechanisms Harness Lévy Flight for Energy-Efficient Wastewater Treatment in Microalgae-Bacteria Systems.
Adv Sci (Weinh)
September 2025
Faculty of Engineering, University of Technology Sydney, P.O. Box 123, Broadway, Sydney, NSW, 2007, Australia.
Microalgae-bacteria symbiosis system is significant for sustainable and low-carbon wastewater treatment, with self-aggregation being key to its stable operation and effective pollutant removal. Cellular motility is the main driving force behind self-aggregation, crucial for symbiosis stability, but the characteristics and patterns involved still remain largely unexplored. Here, cellular movement dynamics into the microalgae-activated sludge model (ASM3) is incorporated, enabling synchronized simulation of metabolic activities and movement behaviors through physical and biochemical interactions in bioreactor systems.
View Article and Find Full Text PDF