Effects of salt and solidification treatment on the oil-contaminated soil: A case study in the coastal region of Tianjin, China

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU140986" target="_blank" >RIV/00216305:26210/21:PU140986 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0959652621018370?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0959652621018370?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jclepro.2021.127619" target="_blank" >10.1016/j.jclepro.2021.127619</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effects of salt and solidification treatment on the oil-contaminated soil: A case study in the coastal region of Tianjin, China

Popis výsledku v původním jazyce

Presence of salt increases the system complexity of multi-phase oil-contaminated soil. The coastal area of Tianjin, China, is a representative zone full of oil-contaminated soil with salt. By considering initial water content, oil content and dry density, this paper focuses on soil-water reaction and mechanical strength to investigate effect of salt on oil-contaminated soil. Application prospect of solidified oil-contaminated saline soil is also analysed. Results indicate that there is a reverse moisture absorption competition between oil and salt, and the liquid limit and plasticity index of the oil-contaminated soil with salt are lower than those without salt. Salt increases the water repellency and leads to a higher water content of low-density soil in the desorption process. The soil-water characteristic curve of the oil-contaminated soil increases in a quadratic-parabola under the salt saturation and supersaturation. With salt, the curves of the maximum dry density and the optimal water content show poor symmetrical distributions. When the oil content is more than 8%, salt on the strength of oil-contaminated soil shows a significant effect. Based on solidification of lime and fly ash, the strength of oil-contaminated soil with salt increases by 17.9-5.7 times, which meets requirements for engineering applications (like subgrade filler). It is concluded that solidification is an effective treatment to clean contamination for oil-contaminated soil with salt.

Název v anglickém jazyce

Effects of salt and solidification treatment on the oil-contaminated soil: A case study in the coastal region of Tianjin, China

Popis výsledku anglicky

Presence of salt increases the system complexity of multi-phase oil-contaminated soil. The coastal area of Tianjin, China, is a representative zone full of oil-contaminated soil with salt. By considering initial water content, oil content and dry density, this paper focuses on soil-water reaction and mechanical strength to investigate effect of salt on oil-contaminated soil. Application prospect of solidified oil-contaminated saline soil is also analysed. Results indicate that there is a reverse moisture absorption competition between oil and salt, and the liquid limit and plasticity index of the oil-contaminated soil with salt are lower than those without salt. Salt increases the water repellency and leads to a higher water content of low-density soil in the desorption process. The soil-water characteristic curve of the oil-contaminated soil increases in a quadratic-parabola under the salt saturation and supersaturation. With salt, the curves of the maximum dry density and the optimal water content show poor symmetrical distributions. When the oil content is more than 8%, salt on the strength of oil-contaminated soil shows a significant effect. Based on solidification of lime and fly ash, the strength of oil-contaminated soil with salt increases by 17.9-5.7 times, which meets requirements for engineering applications (like subgrade filler). It is concluded that solidification is an effective treatment to clean contamination for oil-contaminated soil with salt.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/EF15_003%2F0000456" target="_blank" >EF15_003/0000456: Laboratoř integrace procesů pro trvalou udržitelnost</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Cleaner Production

ISSN

0959-6526

e-ISSN

1879-1786

Svazek periodika

neuveden

Číslo periodika v rámci svazku

312

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

127619-127619

Kód UT WoS článku

000683802200001

EID výsledku v databázi Scopus

2-s2.0-85107536190