Physiology and kinetics of autotrophic denitrification by Thiobacillus denitrificans

1985 ◽  
Vol 22 (4) ◽  
Author(s):  
G�nter Claus ◽  
HansJ�rgen Kutzner
Keyword(s):  
Thiobacillus Denitrificans ◽  
Autotrophic Denitrification ◽  
Kinetics Of

Denitrification of industrial wastewater with sulfur and limestone packed column

2002 ◽  
Vol 46 (11-12) ◽  
pp. 99-104 ◽  
Author(s):  
R. Nugroho ◽  
H. Takanashi ◽  
M. Hirata ◽  
T. Hano
Keyword(s):  
Industrial Wastewater ◽  
Dominant Species ◽  
Elemental Sulfur ◽  
Packed Column ◽  
Steel Production ◽  
Thiobacillus Denitrificans ◽  
Autotrophic Denitrification ◽  
Treatment Performance ◽  
Biofilm Process ◽  
Kinetics Of

An autotrophic denitrification system was developed for nitrate contaminated industrial wastewater whose C/N ratio was very low. The microbes containing Thiobacillus denitrificans as a dominant species were attached on the surface of granular elemental sulfur packed in a column. Elemental sulfur was used as an electron donor for autotrophic denitrification. The granules of limestone were mixed with the granular sulfur to moderate the decrease of alkalinity during autotrophic denitrification. The stoichiometry and basic kinetics of denitrification were studied in column runs. The effects of minerals such as phosphorus on treatment performance were clarified. The wastewater from steel production plants was treated by the present biofilm process. Low extent of nitrogen removal was caused by the lack of minerals.

A Kinetic Model for Autotrophic Denitrification using Sulphur:Limestone Reactors

2003 ◽  
Vol 38 (1) ◽  
pp. 183-192 ◽  
Author(s):  
Ashref Darbi ◽  
Thiruvenkatachari Viraraghavan
Keyword(s):  
Particle Size ◽  
Kinetic Model ◽  
Reaction Rate ◽  
Average Particle Size ◽  
Order Reaction ◽  
Average Particle ◽  
Thiobacillus Denitrificans ◽  
Autotrophic Denitrification ◽  
Reaction Rate Constants ◽  
Kinetics Of

Abstract The kinetics of autotrophic denitrification of groundwater by Thiobacillus denitrificans in a sulfur:limestone upflow reactor was examined in order to predict effluent concentrations. Experiments were performed using water containing 60 and 90 mg NO3—N/L and sulfur and limestone with average particle size of 3.5 mm. Results clearly showed that nitrate was completely removed from 60 and 90 mg NO3—N/L influent concentrations. The results showed that the autotrophic denitrification rates in sulfur:limestone reactors can be described by half-order kinetics. The half-order reaction rate constants for the entire media were estimated at 1.34 and 1.54 mg1/2/L1/2 h for influent concentrations of 60 and 90 mg NO3—N/L, respectively.

scholarly journals Light-driven nitrous oxide production via autotrophic denitrification by self-photosensitized Thiobacillus denitrificans

2019 ◽  
Vol 127 ◽  
pp. 353-360 ◽  
Author(s):  
Man Chen ◽  
Xiao-Fang Zhou ◽  
Yu-Qing Yu ◽  
Xing Liu ◽  
Raymond Jian-Xiong Zeng ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Thiobacillus Denitrificans ◽  
Autotrophic Denitrification ◽  
Oxide Production ◽  
Nitrous Oxide Production

Application of biofilm kinetics to the sulfur/lime packed bed reactor for autotrophic denitrification of groundwater

1998 ◽  
Vol 37 (9) ◽  
pp. 97-104 ◽  
Author(s):  
Zhishi Wang
Keyword(s):  
Packed Bed ◽  
Physical Characteristics ◽  
Packed Bed Reactor ◽  
Experimental Investigations ◽  
Autotrophic Denitrification ◽  
Kinetics Of

To evaluate the engineering feasibility of autotrophic denitrification, a program of theoretical and experimental investigations of the granular sulfur/lime packed bed autotrophic denitrification system was planned and completed. This program evaluated the stoichiometric, kinetic and physical characteristics of the process. This paper will focus on the results of that project which are concerned with the kinetics of autotrophic denitrification of groundwater.

Characteristics of nitrogen removal and microbial distribution by application of spent sulfidic caustic in pilot scale wastewater treatment plant

2010 ◽  
Vol 62 (6) ◽  
pp. 1440-1447 ◽  
Author(s):  
S. Park ◽  
J. Lee ◽  
J. Park ◽  
I. Byun ◽  
T. Park ◽  
...  
Keyword(s):  
Electron Donor ◽  
Nitrogen Removal ◽  
Distribution Ratio ◽  
Pilot Scale ◽  
Nitrifying Bacteria ◽  
Relative Distribution ◽  
Thiobacillus Denitrificans ◽  
Autotrophic Denitrification ◽  
Spent Sulfidic Caustic ◽  
Sulfidic Caustic

Since spent sulfidic caustic (SSC) produced from petrochemical industry contains a high concentration of alkalinity and sulfide, it was expected that SSC could be used as an electron donor for autotrophic denitrification. To investigate the nitrogen removal performance, a pilot scale Bardenpho process was operated. The total nitrogen removal efficiency increased as SSC dosage increased, and the highest efficiency was observed as 77.5% when SSC was injected into both anoxic tank (1) and (2). FISH analysis was also performed to shed light on the effect of SSC dosage on the distribution ratio of nitrifying bacteria and Thiobacillus denitrificans. FISH results indicated that the relative distribution ratio of ammonia-oxidizing bacteria, Nitrobacter spp., Nitrospira genus and Thiobacillus denitrificans to eubacteria varied little with the pH of the tanks, and SSC injection did not give harmful effect on nitrification efficiency. These results show that SSC can be applied as an electron donor of autotrophic denitrification to biological nitrogen removal process effectively, without any inhibitory effects to nitrifying bacteria and sulfur-utilizing denitrifying bacteria.

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