Changing Soil Water Content: Main Trigger of the Multi-Phase Mobilization and Transformation of Petroleum Pollution Components—Insights from the Batch Experiments DOI Open Access
Mingxing Yang, Bing Wang, Yubo Xia

и другие.

Water, Год журнала: 2024, Номер 16(13), С. 1775 - 1775

Опубликована: Июнь 22, 2024

Soil moisture content continuously alters the types and forms of petroleum organic pollutants in soil through processes such as dissolution, convection, dilution, forming complex migration transformation a water–air–soil–NAPL system. Field investigations traditional indoor simulation experiments have difficulty terms accurately diagnosing state different due to influence environmental factors controlling single factors. Batch were conducted simulate mobilization differentiation under water content. The results show that (1) residual components is lowest coarse sand highest clay, which mainly affected by particles; meanwhile, saturation value octanoic acid largest, toluene smallest, determined their viscosity volatility. (2) infiltration are properties medium characteristics. Due its small particle size strong adsorption, clay has (28.8%). This can even be more than twice (13.3%). For components, saturations lowest, respectively (taking fine an example: 25.3% 13.2%), with relatively large difference, solubility. (3) As free phase migrate freely, it transformed most rapidly pores. changes dissolved each component tend gentle. volatility, viscosity, particles, pore cosmid content; degree change ordered follows: > cyclohexane hexadecane acid.

Язык: Английский

Effect and mechanism of the moisture content on the kinetic retardation of LNAPL pollutant migration by the capillary zone DOI
Kexue Han, Rui Zuo,

Ronggao Qin

и другие.

Journal of Hazardous Materials, Год журнала: 2025, Номер 487, С. 137266 - 137266

Опубликована: Янв. 17, 2025

Язык: Английский

Процитировано

1
Flow behavior and retarding mechanism of LNAPL pollutants in capillary zone DOI
Rui Zuo,

Chenxi Huang,

Kexue Han

и другие.

Journal of Hydrology, Год журнала: 2025, Номер unknown, С. 132890 - 132890

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

1
Divergent invasive and native wetland plant microbial community responses to estuarine wetland salinity gradients DOI
Zongsheng Yuan,

Huanhuan Rao,

Z. Ren

и другие.

CATENA, Год журнала: 2025, Номер 252, С. 108842 - 108842

Опубликована: Фев. 22, 2025

Язык: Английский

Процитировано

0
Evolution of microbial degradation efficiency and mechanisms of petroleum hydrocarbons in the aeration zone during seasonal freeze-thaw processes DOI

Haixuan Li,

Tingdi Zhang, Xiaosi Su

и другие.

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116514 - 116514

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Exploring biodegradation limits of n-alkanes as polyethylene models using multi-omics approaches DOI Creative Commons
Miwa Suzuki,

Takuya Hayashi,

Kohei Takahashi

и другие.

The Science of The Total Environment, Год журнала: 2025, Номер 977, С. 179365 - 179365

Опубликована: Апрель 14, 2025

Polyethylene (PE) is widely regarded as non-biodegradable in natural environments, despite reports suggesting partial biotic degradation. Using multi-omics analysis, this study investigated the biodegradation mechanisms of n-alkanes-structural analogs PE-to determine threshold carbon number PE that allows for environmental biodegradation. n-Alkanes with 6-40 carbons (C6-C40) were biodegraded soil, whereas C44 and not. 16S rRNA gene amplicon sequence analysis identified distinct microbial communities associated non-degradable compounds (PEs C44) biodegradable alkanes (C6-C40). Notably, community composition C40 differed from those below C36. Multi-omics genera Aeromicrobium, Nocardia, Nocardioides, Rhodococcus, Acinetobacter, Fontimonas key degraders n-alkanes at C36 below, utilizing alkane hydroxylases such monooxygenase (AlkB), LC-alkane Acinetobacter (AlmA), cytochrome P450 (CYP153). Conversely, was facilitated by taxa, including order Acidimicrobiales genera, Acidovorax, Sphingorhabdus, Prosthecobacter, Roseimicrobium using AlmA CYP153-type hydroxylases. This difference may explain reduced biodegradability above C40, PE.

Язык: Английский

Процитировано

0
Quantitative expression of LNAPL pollutant concentrations in capillary zone by coupling multiple environmental factors based on random forest algorithm DOI
Kexue Han, Rui Zuo, Donghui Xu

и другие.

Journal of Hazardous Materials, Год журнала: 2024, Номер 479, С. 135695 - 135695

Опубликована: Авг. 28, 2024

Язык: Английский

Процитировано

3
Chemical adsorption reaction process and mechanism of n-hexadecane pollutant–water–medium particles in soil DOI
Kexue Han, Rui Zuo,

Guanlan Wu

и другие.

Journal of Hydrology, Год журнала: 2024, Номер 639, С. 131552 - 131552

Опубликована: Июнь 21, 2024

Язык: Английский

Процитировано

2
Changing Soil Water Content: Main Trigger of the Multi-Phase Mobilization and Transformation of Petroleum Pollution Components—Insights from the Batch Experiments DOI Open Access
Mingxing Yang, Bing Wang, Yubo Xia

и другие.

Water, Год журнала: 2024, Номер 16(13), С. 1775 - 1775

Опубликована: Июнь 22, 2024

Soil moisture content continuously alters the types and forms of petroleum organic pollutants in soil through processes such as dissolution, convection, dilution, forming complex migration transformation a water–air–soil–NAPL system. Field investigations traditional indoor simulation experiments have difficulty terms accurately diagnosing state different due to influence environmental factors controlling single factors. Batch were conducted simulate mobilization differentiation under water content. The results show that (1) residual components is lowest coarse sand highest clay, which mainly affected by particles; meanwhile, saturation value octanoic acid largest, toluene smallest, determined their viscosity volatility. (2) infiltration are properties medium characteristics. Due its small particle size strong adsorption, clay has (28.8%). This can even be more than twice (13.3%). For components, saturations lowest, respectively (taking fine an example: 25.3% 13.2%), with relatively large difference, solubility. (3) As free phase migrate freely, it transformed most rapidly pores. changes dissolved each component tend gentle. volatility, viscosity, particles, pore cosmid content; degree change ordered follows: > cyclohexane hexadecane acid.

Язык: Английский

Процитировано

1