Soil Decontamination

2012 ◽  
pp. 201-278
Author(s):  
Helmut Meuser
Keyword(s):  
Soil Decontamination

Applications of Bentonite to Soil Decontamination

2018 ◽  
Vol 69 (7) ◽  
pp. 1695-1698
Author(s):  
Marin Rusanescu ◽  
Carmen Otilia Rusanescu ◽  
Gheorghe Voicu ◽  
Mihaela Begea
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Laboratory Experiments ◽  
Experimental Studies ◽  
Heavy Metal Concentration ◽  
Polluted Soil ◽  
Raw Material ◽  
Soil Decontamination ◽  
Metal Retention ◽  
Removal Of Heavy Metals

A calcium bentonite from Orasu Nou deposit (Satu Mare Romania) was used as raw material. We have conducted laboratory experiments to determine the influence of bentonite on the degree of heavy metal retention. It has been observed that the rate of retention increases as the heavy metal concentration decreases. Experimental studies have been carried out on metal retention ( Zn) in bentonite. In this paper, we realized laboratory experiments for determining the influence of metal (Zn) on the growth and development of two types of plants (Pelargonium domesticum and Kalanchoe) and the effect of bentonite on the absorption of pollutants. These flowers were planted in unpolluted soil, in heavy metal polluted soil and in heavy metal polluted soil to which bentonite was added to observe the positive effect of bentonite. It has been noticed that the flowers planted in unpolluted soil and polluted with heavy metals to which bentonite has been added, the flowers have flourished, the leaves are still green and the plants whose soils have been polluted with heavy metals began to dry after 6 days, three weeks have yellowish leaves and flowers have dried. Experiments have demonstrated the essential role of bentonite for the removal of heavy metals polluted soil.

PCB in the environment: bio-based processes for soil decontamination and management of waste from the industrial production of Pleurotus ostreatus

2017 ◽  
Vol 39 ◽  
pp. 232-239 ◽  
Author(s):  
Giovanna Siracusa ◽  
Simone Becarelli ◽  
Roberto Lorenzi ◽  
Alessandro Gentini ◽  
Simona Di Gregorio
Keyword(s):  
Industrial Production ◽  
Pleurotus Ostreatus ◽  
Soil Decontamination

scholarly journals Detection of zones of soil contamination with contrast-in-resistivity ecotoxicants by profiling

2021 ◽  
Vol 315 ◽  
pp. 01009
Author(s):  
Evgeniy Shabanov ◽  
Dmitriy Sirota ◽  
Sergey Prostov
Keyword(s):  
Soil Contamination ◽  
Random Search ◽  
Geophysical Methods ◽  
Effective Radius ◽  
Soil Decontamination ◽  
Step Size ◽  
Anomalous Zone ◽  
Homogeneous Soil ◽  
Electrical Prospecting ◽  
Adaptive Step

A method for detecting zones of soil contamination with contrast-in-resistivity ecotoxicants, as well as geophysical methods for monitoring soil decontamination processes, are discussed in the article. A zone of soil contamination was designed and simulated using electrical prospecting methods - sounding and profiling. The direct and inverse problem of electrical prospecting of a contaminated zone in the form of a sphere inside a homogeneous soil body was solved in this work, while the main design dependencies were determined, which most accurately describe the data obtained experimentally. The proposed algorithm, based on adaptive step size random search, allows to quickly determine the depth and the effective radius of a zone of contamination with contrast-in-resistivity ecotoxicants, based on the results of profiling, and to estimate the degree of pollution by the ratio of the resistivity of the anomalous zone to that of the host medium.

Soil Decontamination Using Electrokinetics,with Application to Urban Residual Sludges

1997 ◽  
pp. 361-371
Author(s):  
Michel Astruc ◽  
Sylvaine Tellier ◽  
Isabelle Hécho ◽  
Jésus Larrañaga ◽  
Marie-Christine Fourcade
Keyword(s):  
Soil Decontamination

Dissolution, Mechanical Properties, and Thermal Stability of Microparticles Containing Radioactive Cesium on Plant Litter Derived from the Fukushima Daiichi Nuclear Power Plant Accident,  and Soil Decontamination Trials 

2021 ◽  
Author(s):  
Ichiro Tanaka ◽  
Atsushi Yamaguchi ◽  
Kenji Kikuchi ◽  
Nobuo Niimura ◽  
Yume Saeki ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Plant Litter ◽  
Radioactive Cesium ◽  
Soil Decontamination ◽  
Fdnpp Accident ◽  
Fukushima Daiichi

<p>The radioactive cesium (<sup>134</sup>Cs and <sup>137</sup>Cs), which originated from the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident, has remained in the soil and on plants as water-insoluble microparticles (termed as CsMPs) to some extent, and maintained relatively high radioactivity levels in the district. However, it has been reported that the radioactive Cs has been absorbed by plants. To interpret this phenomenon, the authors investigated CsMPs to determine if they become soluble during filtration and dialysis experiments. Moreover, other physical properties, such as mechanical properties and thermal stability, were observed during the course of the relevant experiments. These properties can be obtained by using carbonized charcoal litter with CsMPs. And simple and economic decontamination trials of the soil were performed by sieving after drying and roughly crushing.</p>

scholarly journals Hierarchization of Physicochemical Factors during Simultaneous Removal of Lead and Copper from the Marrakech Municipal Discharge Soils

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Abdelaaziz Aityoub ◽  
Abdessalem Abouelfida ◽  
Abdelaziz Benyaich ◽  
Mohamed Elmeray ◽  
Rachid Idouhli ◽  
...  
Keyword(s):  
Particle Size ◽  
Soil Solution ◽  
Contact Time ◽  
Extraction Efficiency ◽  
Human Life ◽  
Influential Factor ◽  
Soil Decontamination ◽  
Harmful Action ◽  
Equal Importance ◽  
Physicochemical Factors

Heavy metals became a great concern for scientists due to their harmful action on the environment and human life. EDTA and NTA chelation capacity were used to assess soil decontamination. The effect of pH, ligand, soil solution contact time with agitation, soil solution ratio, and particle size were investigated, in order to prioritize them, using the design of experiment methodology (Doe): pH was the most influential factor while the ratio mass of the soil by the volume of the solution and particle size were of equal importance. EDTA was more effective as a chelator than NTA in removing metals from the soil. The contact time was not a significant factor; a contact time of 10 minutes was sufficient to extract the two metals studied. An extraction efficiency of 45% was achieved for Pb and 85% for Cu without optimization process.

scholarly journals Dual Soil Decontamination Procedures

10.5772/65335 ◽  
2016 ◽  
Author(s):  
Yoshiharu Mitoma ◽  
Alina M. Simion ◽  
Cristian Simion
Keyword(s):  
Soil Decontamination

scholarly journals Comparative Study on Multiway Enhanced Bio- and Phytoremediation of Aged Petroleum-Contaminated Soil

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 947 ◽  
Author(s):  
Natalia Ptaszek ◽  
Magdalena Pacwa-Płociniczak ◽  
Magdalena Noszczyńska ◽  
Tomasz Płociniczak
Keyword(s):  
Petroleum Hydrocarbons ◽  
Rhodococcus Erythropolis ◽  
High Survival ◽  
Soil Decontamination ◽  
A Value ◽  
Plant Growth Promoting ◽  
Petroleum Contaminated Soil ◽  
Physicochemical Methods ◽  
Surface Active ◽  
Surface Active Compounds

Bioremediation and phytoremediation of soil polluted with petroleum hydrocarbons (PHs) are an effective and eco-friendly alternative to physicochemical methods of soil decontamination. These techniques can be supported by the addition of effective strains and/or surface-active compounds. However, to obtain maximum efficacy of bioremediation, the interactions that occur between the microorganisms, enhancement factors and plants need to be studied. Our study aimed to investigate the removal of petroleum hydrocarbons from an aged and highly polluted soil (hydrocarbon content about 2.5%) using multiway enhanced bio- and phytoremediation. For this purpose, 10 enhanced experimental groups were compared to two untreated controls. Among the enhanced experimental groups, the bio- and phytoremediation processes were supported by the endophytic strain Rhodococcus erythropolis CDEL254. This bacterial strain has several plant growth-promoting traits and can degrade petroleum hydrocarbons and produce biosurfactants. Additionally, a rhamnolipid solution produced by Pseudomonas aeruginosa was used to support the total petroleum hydrocarbon loss from soil. After 112 days of incubation, the highest PH removal (31.1%) was observed in soil planted with ryegrass (Lolium perenne L. cv. Pearlgreen) treated with living cells of the CDEL254 strain and rhamnolipid solution. For non-planted experimental groups, the highest PH loss (26.1%) was detected for soil treated with heat-inactivated CDEL254 cells and a rhamnolipid solution. In general, the differences in the efficacy of the 10 experimental groups supported by plants, live/dead cells of the strain tested and rhamnolipid were not statistically significant. However, each of these groups was significantly more effective than the appropriate control groups. The PH loss in untreated (natural attenuation) and soils that underwent phytoremediation reached a value of 14.2% and 17.4%, respectively. Even though the CDEL254 strain colonized plant tissues and showed high survival in soil, its introduction did not significantly increase PH loss compared to systems treated with dead biomass. These results indicate that the development of effective biological techniques requires a customized approach to the polluted site and effective optimization of the methods used.

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