scholarly journals Removal of heavy metals from a contaminated soil using organic chelating acids

2010 ◽  
Vol 7 (3) ◽  
pp. 485-496 ◽  
Author(s):  
R. A. Wuana ◽  
F. E. Okieimen ◽  
J. A. Imborvungu
Keyword(s):  
Heavy Metals ◽  
Contaminated Soil ◽  
Removal Of Heavy Metals

On the use of biosurfactants for the removal of heavy metals from oil-contaminated soil

1999 ◽  
Vol 18 (1) ◽  
pp. 50-54 ◽  
Author(s):  
Catherine N. Mulligan ◽  
Raymond N. Yong ◽  
Bernard F. Gibbs
Keyword(s):  
Heavy Metals ◽  
Contaminated Soil ◽  
Removal Of Heavy Metals

scholarly journals Effect of Soil Washing Solutions on Simultaneous Removal of Heavy Metals and Arsenic from Contaminated Soil

2020 ◽  
Vol 17 (9) ◽  
pp. 3133 ◽  
Author(s):  
Kanghee Cho ◽  
Eunji Myung ◽  
Hyunsoo Kim ◽  
Cheonyoung Park ◽  
Nagchoul Choi ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sulfuric Acid ◽  
Phosphoric Acid ◽  
Contaminated Soil ◽  
Contaminated Soils ◽  
Soil Washing ◽  
Metal Extraction ◽  
Simultaneous Removal ◽  
Removal Of Heavy Metals ◽  
Removal Efficiencies

In this study, we investigated the feasibility of using a solution of sulfuric acid and phosphoric acid as an extraction method for soil-washing to remove Cu, Pb, Zn, and As from contaminated soil. We treated various soil particles, including seven fraction sizes, using sulfuric acid. In addition, to improve Cu, Pb, Zn, and As removal efficiencies, washing agents were compared through batch experiments. The results showed that each agent behaved differently when reacting with heavy metals (Cu, Pb, and Zn) and As. Sulfuric acid was more effective in extracting heavy metals than in extracting As. However, phosphoric acid was not effective in extracting heavy metals. Compared with each inorganic acid, As removal from soil by washing agents increased in the order of sulfuric acid (35.81%) < phosphoric acid (62.96%). Therefore, an enhanced mixture solution using sulfuric acid and phosphoric acid to simultaneously remove heavy metals and As from contaminated soils was investigated. Sulfuric acid at 0.6 M was adopted to combine with 0.6 M phosphoric acid to obtain the mixture solution (1:1) that was used to determine the effect for the simultaneous removal of both heavy metals and As from the contaminated soil. The removal efficiencies of As, Cu, Pb, and Zn were 70.5%, 79.6%, 80.1%, and 71.2%, respectively. The combination of sulfuric acid with phosphoric acid increased the overall As and heavy metal extraction efficiencies from the contaminated soil samples. With the combined effect of dissolving oxides and ion exchange under combined washings, the removal efficiencies of heavy metals and As were higher than those of single washings.

Removal of Heavy Metals from Contaminated Soil and Sediments Using the Biosurfactant Surfactin

1999 ◽  
Vol 8 (2) ◽  
pp. 231-254 ◽  
Author(s):  
Catherine N. Mulligan ◽  
Raymond N. Yong ◽  
Bernard F. Gibbs
Keyword(s):  
Heavy Metals ◽  
Contaminated Soil ◽  
Removal Of Heavy Metals

Green Process: Removal of Heavy Metals from Contaminated Soil

2021 ◽  
Vol 2 (2) ◽  
pp. 2021-0173-2021-0173
Author(s):  
Omar Chaalal
Keyword(s):  
Heavy Metals ◽  
Contaminated Soil ◽  
Green Process ◽  
Removal Of Heavy Metals

Optimal Removal of Heavy Metals From Leachate Contaminated Soil Using Bioaugmentation Process

2017 ◽  
Vol 45 (2) ◽  
pp. 1500802 ◽  
Author(s):  
Chijioke U. Emenike ◽  
Winney Liew ◽  
Mohd G. Fahmi ◽  
Kamilah N. Jalil ◽  
Agamuthu Pariathamby ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Contaminated Soil ◽  
Removal Of Heavy Metals

scholarly journals Effect of tree harvest intervals on the removal of heavy metals from a contaminated soil in a field experiment

2018 ◽  
Vol 64 (No. 3) ◽  
pp. 132-137 ◽  
Author(s):  
Kubátová Pavla ◽  
Száková Jiřina ◽  
Břendová Kateřina ◽  
Kroulíková-Vondráčková Stanislava ◽  
Drešlová Markéta ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Field Experiment ◽  
Metal Concentration ◽  
Contaminated Soil ◽  
Metal Removal ◽  
Salix Viminalis ◽  
Short Rotation ◽  
Removal Of Heavy Metals ◽  
Harvest Intervals ◽  
First Time

Four clones of short rotation coppice (SRCs) were investigated for phytoextraction of soil contaminated by risk elements (REs), especially Cd, Pb and Zn. As a main experimental factor, the influence of rotation length on the removal of REs was assessed. The field experiment with two Salix clones (S1 – (Salix schwerinii × Salix viminalis) ×S. viminalis; S2 – S. × smithiana) and two Populus clones (P1 – Populus maximowiczii × Populus nigra; P2 – P. nigra) was established in April 2008 on moderately contaminated soil. For the first time, all clones were harvested in February 2012 (2012<sub>4y</sub>) after 4 years. Subsequently each plot was equally split into halves. The first half of the SRC clones was harvested in February 2014 after 2 years (2014<sub>2y</sub>) and again it was harvested in February 2016 after further 2 years (2016<sub>2y</sub>). The second half was harvested in February 2016 after 4 years (2016<sub>4y</sub>). The results showed that the biomass production for the second 4-year harvest period was significantly higher for all clones but the metal concentration was lower in the mentioned period. 4-year rotation seems to be more advantageous for the phytoextraction than two 2-year rotations. The highest metal removal presented by remediation factors (RFs) per 4 years for Cd (6.39%) and for Zn (2.55%) were found for S2 in the harvest 2016<sub>4y</sub> treatment. Removal of Pb was the highest by P1 clone with very low RF per 4 years (0.04%). Longer rotation is also economically superior.

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