Effects of heavy metal pollution on the ecological and biological characteristics of common chernozem

Колесников, С. И.; Казеев, К. Ш.; Val’kov, V. F.

doi:10.1007/bf02762817

Cited by 19 publications

(19 citation statements)

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“…Electroflotation (EF) has recently been applied to wastewater to remove heavy metal pollutants [53][54][55][56][57][58][59][60][61][62] since other methods for treating wastewaters usually do not operate efficiently for very dilute solutions (concentrations below 50 mg m -3 ) [63].…”

Section: Electro-floatationmentioning

confidence: 99%

Removal of Heavy Metals from Industrial Wastewaters: A Review

et al. 2017

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Heavy metals like arsenic, copper, cadmium, chromium, nickel, zinc, lead, and mercury are major pollutants of fresh water reservoirs because of their toxic, non‐biodegradable, and persistent nature. The industrial growth is the major source of heavy metals introducing such pollutants into different segments of the environment including air, water, soil, and biosphere. Heavy metals are easily absorbed by fishes and vegetables due to their high solubility in the aquatic environments. Hence, they may accumulate in the human body by means of the food chain. Various methods have been developed and used for water and wastewater treatment to decrease heavy metal concentrations. These technologies include membrane filtration, ion‐exchange, adsorption, chemical precipitation, nanotechnology treatments, electrochemical and advanced oxidation processes. In this review, the methods as well as their mechanisms and efficiency are discussed.

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Section: Electro-floatationmentioning

confidence: 99%

Removal of Heavy Metals from Industrial Wastewaters: A Review

et al. 2017

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“…The biological activity of the soil was studied since it reacted rst to external in uences. It was much more sensitive and informative than other chemical and, especially, physical soil properties (Kolesnikov et al, 2000).…”

Section: Methodsmentioning

confidence: 99%

“…Among enzymes, oxidoreductases are the most sensitive to chemical contamination. Enzyme activity is an indicator of the potential biological activity of the soil, and the decomposition rate of the bed characterizes the actual biological activity of the soil.Based on the above biological indicators, the integral biological state indicator (IBSI) of the soil was determined(Kolesnikov et al, 2000). The presented set of indicators gives an informative picture of the biological processes taking place in the soil and its ecological state.…”

mentioning

confidence: 99%

Assessment Of Ecotoxicity Of Thallium By Biological Indicator Of Soil Condition

Колесников

Казеев

Akimenko

et al. 2021

Preprint

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Thallium is a rare and highly toxic heavy metal. The scale and degree of soil contamination with thallium are increasing every year, and the associated environmental risks have been insufficiently investigated. Model laboratory experiments on the ordinary chernozem pollution with thallium oxide (III) have been carried out. It has been found that the ordinary chernozem pollution with thallium worsened its biological activity. The total bacterial count, the abundance of the Azotobacter bacteria, the activity of catalase, the activity of dehydrogenases, and the germination of radish seeds decreased. The degree of deterioration of the chernozem biological activity depends on the thallium concentrations in soil and the period from the moment of contamination. In the vast majority of cases there is a direct correlation between the thallium content in the soil and the level of soil biological activity reduction. The greatest negative impact of thallium pollution on chernozem biological activity has manifested itself 30 days after contamination. On the 90th day, there was a pronounced tendency to restore the chernozem biological activity. However, the chernozem biological activity did not restore to the initial uncontaminated soil values. At contamination of chernozem with thallium, microbiological indices (the bacterial count and the abundance of the Azotobacter bacteria) were more sensitive, and the enzyme activity indicators (catalase, dehydrogenase) and phytotoxicity (germination of plant seeds) were more informative. All used indicators of biological activity demonstrated high sensitivity to soil contamination with thallium and high correlation coefficients with the thallium content in the soil. Therefore, these biological indicators should be used for monitoring, diagnosis, indication and regulation of soil contamination with thallium.

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“…This period is the most informative in assessing the chemical effect on the biological state of the soil (Kolesnikov et al, 2000).…”

Section: Methodsmentioning

confidence: 99%

Standardization of Heavy Metals and Oil Content by Biological Indicators in the Southern Chernozems of the Taman

Колесников¹,

Vernigorova²,

Kuzina³

et al. 2017

JEBAS

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This paper provides an assessment of the resistance of Taman chernozems to contamination with heavy metals (Cr, Cu, Ni, Pb) and oil by biological parameters. As a rule, upon contamination of the Taman chernozems, a significant reduction was observed in the total bacterial count, activity of catalase and dehydrogenase, cellulolytic activity, abundance of the Azotobacter genus bacteria and in the radish germination intensity. The extent of the deterioration in biological properties was determined by two factors: the chemical nature of the metal and its amount in the soil. As a rule, a direct relationship was observed between the concentration of the pollutant and the degree of deterioration of the soil properties in this study. The metals studied had shown different ecotoxicity with respect to the chernozems of Taman: Cr > Cu ≥ Ni = Pb Regional norms for the maximum allowable content of Cr, Cu, Ni, Pb, and oil in the Taman southern chernozems based on a disturbance of the ecological functions of soils were proposed.

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Effects of heavy metal pollution on the ecological and biological characteristics of common chernozem

Cited by 19 publications

References 0 publications

Removal of Heavy Metals from Industrial Wastewaters: A Review

Removal of Heavy Metals from Industrial Wastewaters: A Review

Assessment Of Ecotoxicity Of Thallium By Biological Indicator Of Soil Condition

Standardization of Heavy Metals and Oil Content by Biological Indicators in the Southern Chernozems of the Taman

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