Agrarian
Bulletin
of the Urals

Russian Journal of Agricultural Research

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ISSN 2307-0005 (Online)
Key title: Agrarnyj vestnik Urala (Online)
Abbreviated key title: Agrar. vestn. Urala (Online)

Аграрный вестник Урала № 11 (129) 2014

Экология

Ившина И. Б. доктор биологических наук, заведующая лабораторией, Институт экологии и генетики микроорганизмов Уральского отделения РАН, профессор, Пермский государственный национальный исследовательский университет

Куюкина М. С. доктор биологических наук, ведущий научный сотрудник, Институт экологии и генетики микроорганизмов Уральского отделения РАН, профессор Пермский государственный национальный исследовательский университет

Костина Л.В. кандидат биологических наук, старший инженер, Институт экологии и генетики микроорганизмов Уральского отделения РАН

Тищенко А. В. магистрант Пермский государственный национальный исследовательский университет

УДК:579.66:579.26:579.87

REMOVAL OF HEAVY METALS FROM CONTAMINATED SOILS

Development of civilized technologies for heavy metal removals and elimination of heavy metal contamination aftereffects is of current interest. Analogous remediation of metal-contaminated soils is more complex because microbial cells or large exo- polymers do not move freely through the soil. The use of microbially produced surfactants (biosurfactants) is an alternative with potential for remediation of metal-contaminated soils. Rhodococcus-biosurfactants were used to enhance heavy metal mobiliza- tion and extraction from anthropogenically metal-contaminated soils of Perm. Advantages of Rhodococcus biosurfactants, such as ecological safety and increased functional activity compared to synthetic surfactants, are shown. Efficiency of extraction of heavy metal ions using Rhodococcus-biosurfactant (4 g/l) was 21–100 % for the period once their money, the ability of Rhodococcus- biosurfactants to remove heavy metals from soil was 1.5–50.0 times higher than that of a synthetic surfactant of suitable proper- ties, Tween 60. Rhodococcus-biosurfactants increase in mobility and bioavailability of heavy metals for soil microorganisms. Rhodococcus-biosurfactants can be used for decontamination of heavy metal-polluted soils.

Keywords:

anthropogenically polluted soil, heavy metals, bioremediation, Tween 60, Rhodococcus-biosurfactants


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