University of PardubiceFaculty of Chemical Technology

University

Employees
|
Students
Česky

Publication detail

Influence of Fe3 on removing of nitrate ions by autotrophic denitrification using Thiobacillus denitrificans

Authors: Blažková Zuzana | Trousil Vojtěch | Slehová Eva | Palarčík Jiří | Slezák Miloslav | Cakl Jiří

Year: 2016

Type of publication: ostatní - konference, koncert

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
eng	Influence of Fe3 on removing of nitrate ions by autotrophic denitrification using Thiobacillus denitrificans	Thiobacillus (T.) denitrificans is widely distributed microorganism. It is not toxic and pathogenic bacterium and belongs to group of gram-negative, chemolithoautotrophic and facultative anaerobic microorganism. It can obtain energy by the oxidation of elemental sulfur and other sulfur-containing inorganic compounds, while electrons are released and used for reduction of nitrate and nitrite ions to dinitrogen gas (under anoxic conditions). T. denitrificans is found in soil, mud, marine and freshwater sediments, domestic sewage, industrial waste-treatment lagoons and digestion tanks. From the viewpoint of environment, it is very important organism - T. denitrificans can be used in processes of alternative methods of removing nitrates from contaminated water. Autotrophic denitrification can be affected by many factors as pH, temperature and the ration C/N and S/N etc. This work is focused on influence of ferric iron on removing nitrate ions, because it belongs to compounds accelerating denitrification. The aim of the work was to determine optimal amount of ferric iron for specific conditions. The best added concentration of ferric iron was 0.1 mg/L for removing of nitrates using bacteria T. denitrificans. All experiments were in batch reactors and elemental sulfur was used as electron donor.	Thiobacillus denitrificans; autotrophic denitrification; ferric iron