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ВЫДЕЛЕНИЕ ХЕМОЛИТОТРОФНЫХ МИКРООРГАНИЗМОВ ИЗ ОКИСЛЕННОЙ РУДЫ МЕДНО-НИКЕЛЕВОГО МЕСТОРОЖДЕНИЯ ШАНУЧ (КАМЧАТКА) ДЛЯ БИОВЫЩЕЛАЧИВАНИЯ СУЛЬФИДНЫХ РУД

ВЫДЕЛЕНИЕ ХЕМОЛИТОТРОФНЫХ МИКРООРГАНИЗМОВ ИЗ ОКИСЛЕННОЙ РУДЫ МЕДНО-НИКЕЛЕВОГО МЕСТОРОЖДЕНИЯ ШАНУЧ (КАМЧАТКА) ДЛЯ БИОВЫЩЕЛАЧИВАНИЯ СУЛЬФИДНЫХ РУД

Abstract

В настоящее время в Камчатском крае принята стратегия добычи и переработки минерально-сырьевых ресурсов, предполагающая внедрение новых комплексных и ресурсосберегающих техно-логий. В целях разработки технологии биовыщелачивания сульфидных медно-никелевых руд про-ведены минералогическое и микробиологическое исследования окисленной руды месторождения Шануч (Камчатка). Обнаружены такие первичные рудные минералы, как пирротин, халькопирит и редко встречающийся арсенопирит. Характерный для месторождения пентландит практически не выявлен. Основной вторичный минерал – лимонит. Выделены автохтонные ассоциации мезо-фильных хемолитотрофных железои сероокисляющих микроорганизмов, включающие предста-вителей родов Acidithiobacillus (A. ferrooxidans, A. thiooxidans) и Sulfobacillus. В ходе мониторинга микрофлоры представители рода Ferroplasma не обнаружены. Показано, что наиболее подходя-щей для выделения биомассы железоокисляющих микроорганизмов, используемых в биовыщелачи-вании, является руда c наиболее разнообразным минеральным составом. Содержание сульфидных минералов не влияет на видовой состав бактерий в выделенных ассоциациях.

Mineralogical and microbiological study of Shanuch (the Western Kamchatka) oxidized ore is carried out to develop a technology of sulphide copper-nickel ores bioleaching. Primary ore minerals, like a pyrrhotite, chalcopyrite and scarce arsenopyrite are found. Typical for the field pentlandite is not revealed practically. Limonite is the basic secondary mineral. Mesophilic chemolithotrophic ironand sulfur-oxidizing microorgan-isms including representatives of genera Acidithiobacillus (A. ferrooxidans and A. thiooxidans) and Sulfoba-cillus have been isolated from the oxidized ore. Representatives of the sort Ferroplasma were not found dur-ing monitoring of microflora. It is shown that ore with more diversified mineral structure is the most appropri-ate source for isolation of iron-oxidizing microorganisms for ore bioleaching. The content of sulphide miner-als in ore samples does not affect the qualitative structure of microbial association.

Keywords

окисленные руды, сульфидные минералы, медно-никелевые руды, аборигенные ассоциации бактерий, мезофильные хемолитотрофные микроорганизмы, биовыщелачивание

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold