Bioelectrochemical processes of oxidation of dicarboxylic amino acids by strain Micrococcus luteus 1-I in a biofuel cell

Aleksey Kuznetsov, Natalya Khorina, Elena Konovalova, Dmitry Amsheev, Olga Ponamoreva, Devard Stom

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Abstract

A facultative anaerobic strain was isolated and studied from the activated sludge of the treatment facilities of a petrochemical enterprise. Its morphological and cultural, physiological and biochemical, tinctorial, molecular genetic characteristics have been investigated. Based on the data obtained, strain 1-I was assigned to the species Micrococcus luteus. The electrogenic activity of this bacterium in BFC was shown using dicarboxylic amino acids - glutamic and aspartic. The open-circuit voltage indices in the BFC with M. luteus 1-I increased in 6 days to 511.5 mV with the addition of aspartic acid, and 419 ± 38.5 mV with the addition of glutamic acid. In this case, the short-circuit current increased to 3.17 ± 0.12 and 1.6 ± 0.14 mA, respectively. The specific power of BFCs based on M. luteus 1-I was the highest with the addition of aspartic acid (40-50 mW / m2 at a current density of 0.15 to 0.4 A / m2). The indicated indicator in a similar BFC with glutamic acid was 26-32 mW / m2 (at a current density of 0.08 to 0.28 A / m2). The oxidation of these compounds by the studied bacterial strain was also confirmed by the methods of cyclic voltammetry.

Translated title of the contributionБиоэлектрохимические процессы окисления дикарбоновых аминокислот штаммом Micrococcus luteus 1-и в биотопливном элементе
Original languageEnglish
Title of host publicationIII International scientific and practical conference “Actual problems of the energy complex: mining, production, transmission, processing and environmental protection” (APEC 2021)
PublisherIOP Publishing Ltd.
Volume808
Edition1
DOIs
StatePublished - 8 Jul 2021
Externally publishedYes
Event III International scientific and practical conference "Actual problems of the energy complex: mining, production, transmission, processing and environmental protection" - Москва, Russian Federation
Duration: 21 Apr 2021 → …

Publication series

NameIOP Conference Series: Earth and Environmental Science
PublisherIOP Publishing Ltd.
ISSN (Print)1755-1307

Conference

Conference III International scientific and practical conference "Actual problems of the energy complex: mining, production, transmission, processing and environmental protection"
Country/TerritoryRussian Federation
CityМосква
Period21/04/21 → …

Scopus subject areas

  • Environmental Science(all)

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