scholarly journals Ground Improvement. Modelling of Remediation of Polluted Soil by In-Situ Electrokinetic Treatment.

2000 ◽  
Vol 49 (1) ◽  
pp. 2-5
Author(s):  
Sadataka SHIBA ◽  
Yushi HIRATA
Keyword(s):  
Ground Improvement ◽  
Polluted Soil ◽  
Electrokinetic Treatment

In-situ, Ex-situ, and nano-remediation strategies to treat polluted soil, water, and air – A review

Chemosphere ◽  
2021 ◽  
pp. 133252
Author(s):  
Asim Hussain ◽  
Fazeelat Rehman ◽  
Hamza Rafeeq ◽  
Muhammad Waqas ◽  
Asma Asghar ◽  
...  
Keyword(s):  
Soil Water ◽  
Polluted Soil ◽  
Ex Situ ◽  
Remediation Strategies

scholarly journals Energy-Saving Strategies and their Energy Analysis and Exergy Analysis for In Situ Thermal Remediation System of Polluted-Soil

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 4018 ◽  
Author(s):  
Tian-Tian Li ◽  
Yun-Ze Li ◽  
Zhuang-Zhuang Zhai ◽  
En-Hui Li ◽  
Tong Li
Keyword(s):  
Energy Saving ◽  
Exergy Analysis ◽  
Energy Analysis ◽  
Waste Heat ◽  
Polluted Soil ◽  
Severe Problem ◽  
Industrial Soil ◽  
Thermal Remediation ◽  
Variable Condition

The environmental safety of soil has become a severe problem in China with the boost of industrialization. Polluted-soil thermal remediation is a kind of suitable remediation technology for large-scale heavily contaminated industrial soil, with the advantages of being usable in off-grid areas and with a high fuel to energy conversion rate. Research on energy-saving strategies is beneficial for resource utilization. Focused on energy saving and efficiency promotion of polluted-soil in situ thermal remediation system, this paper presents three energy-saving strategies: Variable-condition mode (VCM), heat-returning mode (HRM) and air-preheating mode (APM). The energy analysis based on the first law of thermodynamics and exergy analysis based on the second law of thermodynamics are completed. By comparing the results, the most effective part of the energy-saving strategy for variable-condition mode is that high savings in the amount of natural gas (NG) used can be achieved, from 0.1124 to 0.0299 kg·s−1 in the first stage. Energy-saving strategies for heat-returning mode and air-preheating mode have higher utilization ratios than the basic method (BM) for the reason they make full use of waste heat. As a whole, a combination of energy-saving strategies can improve the fuel savings and energy efficiency at the same time.

scholarly journals Physico-chemical limitations during the electrokinetic treatment of a polluted soil

2009 ◽  
Vol 145 (3) ◽  
pp. 355-361 ◽  
Author(s):  
A. Fernandez ◽  
P. Hlavackova ◽  
V. Pomès ◽  
M. Sardin
Keyword(s):  
Polluted Soil ◽  
Electrokinetic Treatment ◽  
Physico Chemical

Calibration of a Miniature Cone Penetrometer for Highway Applications

1998 ◽  
Vol 1614 (1) ◽  
pp. 8-14 ◽  
Author(s):  
Pradeep U. Kurup ◽  
Mehmet T. Tumay
Keyword(s):  
Ground Improvement ◽  
Cone Penetration Test ◽  
Test System ◽  
Soil Parameters ◽  
Cone Penetrometer ◽  
Penetration Test ◽  
Cone Penetration ◽  
Tip Resistance ◽  
In Situ Investigation

The electronic cone penetrometer is an important in situ investigation tool of choice for site characterization. Application of this proven concept of the cone penetration test (CPT) to highway design and construction control by miniaturization is described. A miniature cone penetrometer with a projected cone area of 2 cm2 has been developed and implemented in a continuous intrusion miniature cone penetration test system (CIMCPT). This device may be used for rapid, accurate, and economical characterization of sites and to determine engineering soil parameters needed in the design of pavements, embankments, and earth structures. The miniature cone penetration test (MCPT) gives finer details than the standard 10-cm2 cross-sectional area reference cone penetrometer. This makes the MCPT attractive for subgrade characterization, quality-control assessment, compaction control of embankments, and assessment of ground improvement effectiveness for transportation infrastructure. In situ calibration of the CIMCPT system was conducted at a highway embankment site in Baton Rouge, Louisiana. MCPT penetration profiles were compared with those obtained by using the standard cone penetrometer at the same site. The tip resistance of the MCPT was 10 percent higher than that of the reference CPT. The sleeve friction and friction ratio of the reference CPT were higher than that of the MCPT by 12 and 23 percent, respectively. Calibration was also performed to determine empirical cone factors required for estimating undrained shear strength from MCPT data.

RIGID CONTAINMENT WALLS FOR LIQUEFACTION REMEDIATION

2012 ◽  
Vol 06 (04) ◽  
pp. 1250017 ◽  
Author(s):  
HELEN MITRANI ◽  
S. P. G. MADABHUSHI
Keyword(s):  
Deep Layer ◽  
Ground Improvement ◽  
Free Field ◽  
Frame Structure ◽  
Lateral Movement ◽  
Existing Buildings ◽  
Centrifuge Tests ◽  
Structural Connection

Many typical ground improvement techniques that are used for liquefaction remediation, such as in situ densification, are not appropriate for application under existing buildings and more novel techniques are required. This paper describes centrifuge tests investigating the performance of rigid containment walls as a liquefaction remediation method. A simple frame structure, founded on a deep layer of loose, liquefiable sand was tested under earthquake shaking. Centrifuge tests were then carried out with containment walls around the base of the structure, extending through the full depth of the liquefiable layer and also partial depth. It is found that rigid containment walls can be very effective in reducing structural settlements primarily by preventing lateral movement of the foundation sand but the impermeability of the walls may also be important. Improvements in structural settlement are observed even when the walls do not extend through the full depth of the liquefiable layer, if the depth of the walls is greater than the depth of the free field liquefaction. In addition, it is found that the accelerations of the structure are not increased, provided there is no rigid, structural connection between the structure and the containment walls.

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