scholarly journals LEAD IMMOBILIZATION TECHNOLOGY UTILIZING POTASSIUM DEHYDROGEN PHOSPHATE AND ORGANIC ACID IN AN ACTUAL SHOOTING RANGE LEAD-CONTAMINATED SOIL

2011 ◽  
Vol 67 (2) ◽  
pp. 93-100
Author(s):  
Takatoshi YOSHIDA ◽  
Masahiko KATOH ◽  
Takeshi SATO
Keyword(s):  
Organic Acid ◽  
Contaminated Soil ◽  
Shooting Range ◽  
Immobilization Technology ◽  
Lead Immobilization

scholarly journals Role of Inorganic and Organic Fractions in Animal Manure Compost in Lead Immobilization and Microbial Activity in Soil

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Masahiko Katoh ◽  
Wataru Kitahara ◽  
Takeshi Sato
Keyword(s):  
Microbial Activity ◽  
Contaminated Soil ◽  
Animal Manure ◽  
Water Soluble ◽  
Residual Fraction ◽  
Inorganic Component ◽  
Manure Compost ◽  
Microbial Enzyme ◽  
Lead Immobilization ◽  
Inorganic Fraction

This study aimed to identify how the ratio of inorganic-to-organic components in animal manure compost (AMC) affected both lead immobilization and microbial activity in lead-contaminated soil. When AMC containing 50% or more inorganic fraction with high phosphorous content was applied to contaminated soil, the amounts of water-soluble lead in it were suppressed by over 88% from the values in the soil without compost. The residual fraction under sequential extraction increased with the inorganic fraction in the AMC; however, in those AMCs, the levels of microbial enzyme activity were the same or less than those in the control soil. The application of AMC containing 25% inorganic fraction could alter the lead phases to be more insoluble while improving microbial enzyme activities; however, no suppression of the level of water-soluble lead existed during the first 30 days. These results indicate that compost containing an inorganic component of 50% or more with high phosphorus content is suitable for immobilizing lead; however, in the case where low precipitation is expected for a month, AMC containing 25% inorganic component could be used to both immobilize lead and restore microbial activity.

scholarly journals Removal Characteristics of Lead-contaminated Soil at Military Shooting Range by Using Soil Washing Process

2012 ◽  
Vol 18 (4) ◽  
pp. 390-397
Author(s):  
Sung-Kyun Ahn ◽  
Chul Kim ◽  
Joung-Man Lee ◽  
Gang-Choon Lee ◽  
Zang-Ho Shon ◽  
...  
Keyword(s):  
Contaminated Soil ◽  
Soil Washing ◽  
Shooting Range ◽  
Washing Process

scholarly journals Biological assessment of contaminated shooting range soil using earthworm biomarkers

2021 ◽  
Author(s):  
Jūratė Česynaitė ◽  
Marius Praspaliauskas ◽  
Nerijus Pedišius ◽  
Gintare Sujetoviene
Keyword(s):  
Contaminated Soil ◽  
Organic Matter Content ◽  
Matter Content ◽  
Biological Assessment ◽  
Contaminated Site ◽  
Ecological Problem ◽  
Soil Toxicity ◽  
Compensatory Mechanism ◽  
Shooting Range ◽  
Shooting Range Soil

Abstract The contamination in shooting range soils is widely know ecological problem around the world. The aim of this study was to investigate the toxic effects of contaminated shooting range soil on physiological and biochemical endpoints of Eisenia fetida . A shooting range located in Alytus, Lithuania was chosen as a object to assess the site–specific soil toxicity to earthworm E. fetida . The elevated concentrations of Pb, Cu, Fe, Ni, Mn, Zn in soil was found along with lower organic matter content and higher soil density, especially closer to the target line. Significant weight loss was observed in earthworms exposed to soil of the most contaminated shooting range site. Significantly higher concentrations of Pb, Cu, Fe, Ni, Sb was determined in the tissues of adult worms from the very end of the shooting range. No juveniles were observed in the most contaminated soil, higher concentrations of Pb, Cu, Fe, Mn, Zn were found in the tissues of juveniles exposed to the contaminated soil of study sites were concentrations of lead were lower compared to the most contaminated site, but higher compared to control. Exposure to contaminated soil caused antioxidant system alterations and lipid peroxidation. It was observed a compensatory mechanism between the activities of GR and glutathione S-transferase (GST) under trace elements induced toxicity.

scholarly journals Organic acid enhanced electrodialytic extraction of lead from contaminated soil fines in suspension

2007 ◽  
Vol 82 (10) ◽  
pp. 920-928 ◽  
Author(s):  
Pernille E Jensen ◽  
Birgitte K Ahring ◽  
Lisbeth M Ottosen
Keyword(s):  
Organic Acid ◽  
Contaminated Soil

scholarly journals Dynamics of Fe, Mn, and Al Liberated from Contaminated Soil by Low-Molecular-Weight Organic Acids and Their Effects on the Release of Soil-Borne Trace Elements

2018 ◽  
Vol 8 (12) ◽  
pp. 2444 ◽  
Author(s):  
Junhao Qin ◽  
Osim Enya ◽  
Chuxia Lin
Keyword(s):  
Molecular Weight ◽  
Trace Elements ◽  
Organic Acids ◽  
Organic Acid ◽  
Contaminated Soil ◽  
Manganese Oxides ◽  
Low Molecular Weight ◽  
Variation Pattern ◽  
Organic Complexes ◽  
Oxalic Acids

A 15-day batch experiment was conducted to investigate the behaviours of Fe, Mn, and Al oxides upon attack by three common low-molecular-weight organic acids, and their effects on liberation of trace elements from a multi-contaminated soil. While the capacity of malic acid to mobilize soil-borne Fe, Mn, and Al was weaker compared to citric and oxalic acids, a similar trend was observed, showing that the concentration of dissolved Fe, Mn, and Al increased with increasing duration of the experiment. Marked increase in metal concentrations only took place after 5 or 7 days of the experiment. For the same organic acid treatment, Fe, Mn, and Al all showed a very similar temporal variation pattern. The concentration of dissolved Fe, Mn, and Al was markedly controlled by the total Fe, Mn, and Al contained in the soil, respectively. It appears that manganese oxides were more reactive to the organic acids, as compared to their Fe and Al counterparts. However, when multiple organic acids were present, the soil-borne Fe, Mn, and Al were mobilized rapidly within the first 5 or 7 days of the experiment and then tended to decrease. The formation of insoluble Fe, Mn, and Al organic complexes tended to be enhanced due to co-existence of multiple organic acids, resulting in the re-immobilization of the dissolved Fe, Mn, and Al. The organic acid-driven dissolution of Fe, Mn, or Al had a major control on the mobilization of As, Cr, Zn, Ni, Cu, and Cd that were bound to these oxides with a correlation coefficient being frequently greater than 0.9 for As, Cr, Zn, and Ni.

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