Immobilization of Pb Contaminated Soil using Modified Clay

2006 ◽  
Vol 1 (2) ◽  
Author(s):  
J. H. Park
Keyword(s):  
Contaminated Soil ◽  
Modified Clay

Arsenic Adsorption on Modified Clay Minerals in Contaminated Soil and Water: Impact of pH and Competitive Anions

2021 ◽  
pp. 2000259
Author(s):  
Raj Mukhopadhyay ◽  
Binoy Sarkar ◽  
Arijit Barman ◽  
Samar Chandra Datta ◽  
Kanchikeri Math Manjaiah
Keyword(s):  
Clay Minerals ◽  
Contaminated Soil ◽  
Water Impact ◽  
Arsenic Adsorption ◽  
Modified Clay ◽  
Soil And Water

Immobilization of Pb Contaminated Soil using Modified Clay

2006 ◽  
Vol 1 (2) ◽  
Author(s):  
J. H. Park ◽  
W. S. Shin
Keyword(s):  
Sequential Extraction ◽  
Sorption Capacity ◽  
Contaminated Soil ◽  
Contact Time ◽  
Natural Soil ◽  
Modified Clay ◽  
Modified Clays ◽  
Mobile Fraction ◽  
Natural Clays ◽  
Reducible Fraction

Natural clays (i.e., montmorillonite and diatomite) modified by iron and manganese oxide were used as immobilization agents for the remediation of Pb contaminated soil. Batch sorption experiments were conducted to investigate the effect of surface modification on Pb sorption. Pb sorption capacity in modified clays was higher than that in natural clays. Pb sorption capacity in modified and unmodified clays was in the order of Mn-diatomite (1.967 mmol/g) > Mn-montmorillonite (0.718 mmol/g) > Fe-diatomite (0.457 mmol/g) > Fe-montmorillonite (0.330 mmol/g) > montmorillonite (0.233 mmol/g) > diatomite (0.025 mmol/g). Effects of modified clay amendment and ageing (or contact time) on immobilization of Pb were evaluated by a toxicity characteristic leaching procedure (TCLP) and sequential extraction. An artificially polluted natural soil (APNS) with Pb (59.72 mmol Pb/kg soil) was used in immobilization experiment. Lead immobilization efficiency in APNS with modified clay was in the order of Mn-montmorillonite (93%) > Mn-diatomite (86%) > Fe-montmorillonite (81%) > Fe-diatomite (80%). Among the tested modified clays, Mn-montmorillonite was the most efficient in Pb immobilization. Results of sequential extraction of Pb from APNS after immobilization with modified clays indicate that mobile fraction (i.e., exchangeable and carbonate fraction) decreased as contact time increased, while less mobile (i.e., reducible) fraction increased from 27% to 60% of the total amount extracted. This indicates that addition of modified clay to APNS transforms Pb in mobile fraction into reducible fraction.

An Experimental Study on Geotechnical and Electrical Properties of an Oil-Contaminated Soil at Thi-Qar Governorate/Iraq

2019 ◽  
Vol 10 (3) ◽  
pp. 148
Author(s):  
Nesreen Kurdy Al-Obaidy ◽  
Assad Al-Shueli ◽  
Hawraa Sattar ◽  
Zainab Majeed ◽  
Noor Al Huda Hamid
Keyword(s):  
Experimental Study ◽  
Electrical Properties ◽  
Contaminated Soil

INFLUENCE OF MINERAL SORBENTS ON GROWTH AND DEVELOPMENT OF HORDEUM VULGARE ON SOIL POLLUTED BY BENZ(A)PYRENE

2020 ◽  
Author(s):  
A.I. Barbashev ◽  
◽  
S.N. Sushkova ◽  
T.M. Minkina ◽  
T.S. Dudnikova ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Toxic Effect ◽  
Contaminated Soil ◽  
Growth And Development

The effect of diatomite and tripoli added into the soil artificially contaminated with benzo[a]pyrene was studied. A decrease in the toxic effect of BaP on barley plants was established when diatomite and tripoli were added as ameliorants to contaminated soil. The improvement of plants grown сharacteristics on soils contaminated with BaP with the addition of diatomite and tripoli was shown up to 2-4 times compare to contaminated samples.

THE EFFECT OF BACTERIAL STRAINS ON THE ENZYMATIC ACTIVITY OF SOILS IN IMPACT ZONE OF ATAMAN LAKE

2020 ◽  
Author(s):  
V.V. Zinchenko ◽  
◽  
E.S Fedorenko ◽  
A.V Gorovtsov ◽  
T.M Minkina ◽  
...  
Keyword(s):  
Enzymatic Activity ◽  
Dehydrogenase Activity ◽  
Contaminated Soil ◽  
Model Experiment ◽  
Impact Zone ◽  
Bacterial Strains ◽  
The Impact

As a result of the model experiment, an increase in the enzymatic activity of meadow chernozem of the impact zone of Ataman Lake with the introduction of a strains mixture of metal-resistant microorganisms into the soil was established. The experiment has shown that the application of bacterial strains increases the dehydrogenase activity of contaminated soil by 51.8% compared to the variant without remediation

Remediation of Heavy Metals Contaminated Soil and Soil Washing

2015 ◽  
Vol 5 (3) ◽  
pp. 1-6 ◽  
Author(s):  
Zainab Siddiqui ◽  
◽  
S.M Ali Jawaid ◽  
Sandeep Vishen ◽  
Shreya Verma ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Contaminated Soil ◽  
Soil Washing
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