Changes of biochemical properties and heavy metal bioavailability in soil treated with natural liming materials

El-Azeem, S. A. M. Abd; Ahmad, Mahtab; Usman, Adel R.A.; Kim, Kwon Rae; Oh, Sang‐Eun; Lee, Sang Soo; Ok, Yong Sik

doi:10.1007/s12665-013-2410-3

Cited by 62 publications

(26 citation statements)

References 49 publications

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“…Similarly, it has been documented that an increase in pH can lead to immobilization of the majority of trace elements; in other words, a higher concentration of most trace elements from alkaline residue could leach from the unoxidized tailings, rather than from the oxidized tailings, as pH changes (El-Azeem et al 2013;Jia et al 2014).…”

Section: Soil Ph Current Variation and Hms Removalmentioning

confidence: 99%

Compositional and metabolic quotient analysis of heavy metal contaminated soil after electroremediation

2015

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Heavy metal soil contamination provides a danger both to human and environmental ecosystem health and is still on the rise in many developing countries. Electroremediation provides an innovative method to remedy contamination of soils by heavy metals. Fundamental to the acceptance of any soil remedial technique is proof that positive benefits outweigh the negative impacts, in terms of soil health. The environmental effect of electroremediation of heavy metals contaminated soil by some biological indicators was evaluated. A soil contaminated with Zn, Pb, Ni, and Cd was used in a laboratory experiment. Treatment was imposed with a constant voltage gradient of 0.83 V/cm for 20 days. Results indicated that the physicochemical changes caused by the electroremidiation process on the soil microbial population (actinomycetes and gram-positive and negative bacteria), soil respiration and microbial biomass were significant (p \ 0.01). At the commencement of the study, soil microbial activity was reduced, due to physicochemical changes in pH, amount of moisture and the changes in the levels of heavy metals in the soil. The greatest reduction on the microbial activity was close to the cathode where high levels of heavy metal concentrations and high pH were demonstrated. The metabolic quotient index [qCO 2 ] was used to achieve a more refined evaluation, compared to analysis of soil respiration and microbial biomass alone. Accordingly, high amounts of qCO 2 near the cathode show the unfavorable living conditions of such microorganisms in these sections.

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Section: Soil Ph Current Variation and Hms Removalmentioning

confidence: 99%

Compositional and metabolic quotient analysis of heavy metal contaminated soil after electroremediation

2015

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“…These activities are informative to determine changes in soil biochemical properties which are affected by ecological stress from natural phenomena or anthropogenic activities (Abd El-Azeem et al 2013). Soil enzymes help in the biochemical transformations of pollutants in the soil and also function as a measure of soil fertility (Chinyere et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Assessment of the content of heavy metals and potential pathogenic microorganisms in soil under illegal dumping sites

2016

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The aim of the study was the assessment of the environmental contamination of soil by heavy metals and microorganisms within the uncontrolled landfill dumps and the impact of anthropogenic sources on the activity of selected soil surface horizons. Some physicochemical properties were determined according to commonly used procedures in soil science laboratories. The total of heavy metals concentration was assessed according to Crock and Severson and forms available according to Lindsay and Norvell. The total contents and mobile forms were determined by atomic absorption spectrophotometry. As part of the microbiological tests, potentially pathogenic evidence of bacteria was found indicating fecal contamination of the soil (E. coli and other coliform bacilli, Salmonella spp., and Enterococcus spp.). Quantitative analyses were carried out based on the calculation of the most probable number of microorganisms (MPN method). The activity of selected redox and hydrolases enzymes: the activity of dehydrogenases with the Thalmann method, catalase with the Johnson and Temple method, alkaline and acid phosphatase with the method of Tabatabai and Bremner. It was concluded that depending on the composition of the dump, the physicochemical properties of the soil were changed, too. Uncontrolled landfills significantly affected the increase or decrease in the pH of the tested soil and the organic content of the tested soil. The waste stored at the site affected the contamination of the soil by heavy metals to varying degrees. The results show that the most dangerous bacteria exist in the soil under the C landfill and this is where the greatest risk of soil contamination exists. The highest amount of selected enzymes activity was observed in soils under illegal C dumping sites. In the soil sourced from A and B landfills, the enzyme inhibition occurred which was linked to the lowering of the organic carbon. The results of the principal component analysis demonstrated that the content of heavy metals and the activity of enzymes are the indicators of anthropogenic pollution, whereas granulometric composition (sand and silt) is mainly associated with the natural environment.

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“…The addition of calcium oxide to soil reduced the content of these metals in soil much more strongly. Abd El-Azeem et al [25] and Guodong [26] report that calcium application to soil reduces the availability of heavy metals by increasing the soil pH [27]. On the other hand [23,28], substances such as compost, bentonite and calcium oxide did not reduce the content of manganese, cadmium, chromium or lead [23], although they did with copper and iron in soil [28].…”

Section: Resultsmentioning

confidence: 99%

Effect of neutralizing substances on the content of trace elements in soil contaminated with cobalt

Kosiorek

Wyszkowski

2019

Environ. Protect. Eng.

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The aim of the study was to determine the effect of increasing doses of cobalt (0, 20, 40, 80, 160, 320 mg/kg d.m. of soil) on the total content of trace elements in soil after application of manure, clay, charcoal, zeolite and calcium oxide. The neutralizing substances were applied at 2% of the soil weight, and calcium oxide at a dose corresponding to one hydrolytic acidity. The content of the cobalt, cadmium, lead, chromium, nickel, zinc, copper, manganese and iron was determined in soil. The contamination of soil with cobalt and the application of neutralizing substances had significant effects on the total content of trace elements in soil In the series without substances, the soil contamination with cobalt increased the content of cobalt, lead, chromium, nickel and zinc in soil. All the neutralizing substances reduced the content of cobalt, manganese and iron in soil. The highest decrease in the cobalt content was observed in the series with manure, whereas the highest decrease in zinc occurred after addition of charcoal. The decrease in the content of the other metals (except nickel and lead) was observed in the pots with CaO and zeolite. The effect of other neutralizing substances depended on the trace element.

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Changes of biochemical properties and heavy metal bioavailability in soil treated with natural liming materials

Cited by 62 publications

References 49 publications

Compositional and metabolic quotient analysis of heavy metal contaminated soil after electroremediation

Compositional and metabolic quotient analysis of heavy metal contaminated soil after electroremediation

Assessment of the content of heavy metals and potential pathogenic microorganisms in soil under illegal dumping sites

Effect of neutralizing substances on the content of trace elements in soil contaminated with cobalt

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