Feasibility Study on Salting-in of Organic Pollutants To Enhance the Effectiveness of Ex-Situ Soil Washing†

1997 ◽  
Vol 36 (6) ◽  
pp. 2435-2439 ◽  
Author(s):  
Sao-Ling Chiu ◽  
Nilufer H. Dural
Keyword(s):  
Feasibility Study ◽  
Organic Pollutants ◽  
Soil Washing ◽  
Ex Situ

Ex situ diesel contaminated soil washing with mechanical methods

2001 ◽  
Vol 14 (9) ◽  
pp. 1093-1100 ◽  
Author(s):  
D. Feng ◽  
L. Lorenzen ◽  
C. Aldrich ◽  
P.W. Maré
Keyword(s):  
Contaminated Soil ◽  
Soil Washing ◽  
Ex Situ ◽  
Mechanical Methods

scholarly journals Coupling of Anodic Oxidation and Soil Remediation Processes: A Review

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4309 ◽  
Author(s):  
Maiara Barbosa Ferreira ◽  
Aline Maria Sales Solano ◽  
Elisama Vieira dos Santos ◽  
Carlos A. Martínez-Huitle ◽  
Soliu O. Ganiyu
Keyword(s):  
Anodic Oxidation ◽  
Soil Remediation ◽  
Contaminated Soils ◽  
Soil Washing ◽  
Ex Situ ◽  
Combined Processes ◽  
Environmental Consequences ◽  
Efficient Coupling ◽  
Remediation Process

In recent years, due to industrial modernization and agricultural mechanization, several environmental consequences have been observed, which make sustainable development difficult. Soil, as an important component of ecosystem and a key resource for the survival of human and animals, has been under constant contamination from different human activities. Contaminated soils and sites require remediation not only because of the hazardous threat it possess to the environment but also due to the shortage of fresh land for both agriculture and urbanization. Combined or coupled remediation technologies are one of the efficient processes for the treatment of contaminated soils. In these technologies, two or more soil remediation techniques are applied simultaneously or sequentially, in which one technique complements the other, making the treatment very efficient. Coupling anodic oxidation (AO) and soil remediation for the treatment of soil contaminated with organics has been studied via two configurations: (i) soil remediation, ex situ AO, where AO is used as a post-treatment stage for the treatment of effluents from soil remediation process and (ii) soil remediation, in situ AO, where both processes are applied simultaneously. The former is the most widely investigated configuration of the combined processes, while the latter is less common due to the greater diffusion dependency of AO as an electrode process. In this review, the concept of soil washing (SW)/soil flushing (SF) and electrokinetic as soil remediation techniques are briefly explained followed by a discussion of different configurations of combined AO and soil remediation.

scholarly journals Treatment of ex-situ soil-washing fluids polluted with petroleum by anodic oxidation, photolysis, sonolysis and combined approaches

2017 ◽  
Vol 310 ◽  
pp. 581-588 ◽  
Author(s):  
Elisama Vieira dos Santos ◽  
Cristina Sáez ◽  
Pablo Cañizares ◽  
Djalma Ribeiro da Silva ◽  
Carlos A. Martínez-Huitle ◽  
...  
Keyword(s):  
Anodic Oxidation ◽  
Soil Washing ◽  
Ex Situ

scholarly journals Bioengineered Approach for Ex situ Vermiextraction of Acenaphthylene, Benzo (E)Pyrene and Benzo (Ghi) Perylene Soil Contamination

2021 ◽  
pp. 29-36
Author(s):  
C. Fawole ◽  
S. J. Salami ◽  
D. A. Dashak ◽  
H. A. Chimezie-Nwosu
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Aromatic Hydrocarbons ◽  
Contaminated Soil ◽  
Analytical Procedure ◽  
Ex Situ ◽  
Polycyclic Aromatic ◽  
Petroleum Contaminated Soil ◽  
Us Epa

The ex situ study of vermiextraction of Acenaphthylene (AcPY), Benzo(e)pyrene (BeP) and Benzo(ghi)perylene (BP) form constructed vermiculture containing petroleum contaminated soil (8.00±0.01, 9.80±0.00 and 5.02±0.00 mg/kg respectively) and vermiaccumulation (AcPY, 1.05±0.00, BeP, 2.01±0.00 and BP, 1.73±0.00 mg/kg) by Esenia fetida squirms with mean vermiremoval efficiency of 100% while vermiconversions were AcPY, 86.88, BeP, 79.49 and BP, 65.54%. The identification and quantification of the 3 polycyclic aromatic hydrocarbons (3PAHs) were performed by GS/MD in accordance with analytical procedure of US. EPA 8270; 625. The bioengineered approach by E. fetida squirms in the vermiculture proved effective to detoxify and remove the persistent organic pollutants of the 3PAHs. The ex situ study of vermiextraction of Acenaphthylene (AcPY), Benzo(e)pyrene (BeP) and Benzo(ghi)perylene (BP) form constructed vermiculture containing petroleum contaminated soil (8.00±0.01, 9.80±0.00 and 5.02±0.00 mg/kg respectively) and vermiaccumulation (AcPY, 1.05±0.00, BeP, 2.01±0.00 and BP, 1.73±0.00 mg/kg) by Esenia fetida squirms with mean vermiremoval efficiency of 100% while vermiconversions were AcPY, 86.88, BeP, 79.49 and BP, 65.54%. The identification and quantification of the 3 polycyclic aromatic hydrocarbons (3PAHs) were performed by GS/MD in accordance with analytical procedure of US. EPA 8270; 625. The bioengineered approach by E. fetida squirms in the vermiculture proved effective to detoxify and remove the persistent organic pollutants of the 3PAHs.

scholarly journals Effect of Chelant-Based Soil Washing and Post-Treatment on Pb, Cd, and Zn Bioavailability and Plant Uptake

2021 ◽  
Vol 232 (10) ◽  
Author(s):  
Christoph Noller ◽  
Wolfgang Friesl-Hanl ◽  
Rebecca Hood-Nowotny ◽  
Markus Puschenreiter ◽  
Andrea Watzinger
Keyword(s):  
Plant Uptake ◽  
Total Concentration ◽  
Soil Washing ◽  
Organic Amendments ◽  
Ex Situ ◽  
Metal Availability ◽  
Soil Extracts ◽  
Aqua Regia ◽  
Edta Complexes ◽  
Zn Bioavailability

Abstract The remediation of Pb, Cd, and Zn contaminated soil by ex situ EDTA washing was investigated in two pot experiments. We tested the influence of (i) 0, 0.5, 1.0, and 1.5%wt zero-valent iron (ZVI) and (ii) a combination of 5%wt vermicompost, 2%wt biochar, and 1%wt ZVI on the metal availability in EDTA-washed soil using different soil extracts (Aqua regia, NH4NO3) and plant concentrations. We found that EDTA soil washing significantly reduced the total concentration of Pb, Cd, and Zn and significantly reduced the Cd and Zn plant uptake. Residual EDTA was detected in water extracts causing the formation of highly available Pb-EDTA complexes. While organic amendments had no significant effect on Pb behavior in washed soils, an amendment of ≥ 1%wt ZVI successfully reduced EDTA concentrations, Pb bioavailability, and plant uptake. Our results suggest that Pb-EDTA complexes adsorb to a Fe oxyhydroxide layer, quickly developing on the ZVI surface. The increase in ZVI application strongly decreases Zn concentrations in plant tissue, whereas the uptake of Cd was not reduced, but even slightly increased. Soil washing did not affect plant productivity and organic amendments improved biomass production.

Removal of hydrophobic organic pollutants from soil washing/flushing solutions: A critical review

2016 ◽  
Vol 306 ◽  
pp. 149-174 ◽  
Author(s):  
Clément Trellu ◽  
Emmanuel Mousset ◽  
Yoan Pechaud ◽  
David Huguenot ◽  
Eric D. van Hullebusch ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Critical Review ◽  
Soil Washing ◽  
Hydrophobic Organic Pollutants
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