Next Article in Journal
Comparison of the Hospital Arrival Time and Differences in Pain Quality between Diabetic and Non-Diabetic STEMI Patients
Next Article in Special Issue
Numerical Study of the Simultaneous Oxidation of NO and SO2 by Ozone
Previous Article in Journal
An Approach for Prioritizing “Down-the-Drain” Chemicals Used in the Household
Previous Article in Special Issue
Conversion Characteristics and Production Evaluation of Styrene/o-Xylene Mixtures Removed by DBD Pretreatment
Article Menu

Export Article

Open AccessArticle
Int. J. Environ. Res. Public Health 2015, 12(2), 1368-1386; doi:10.3390/ijerph120201368

The Effect of Oxygen Supply on the Dual Growth Kinetics of Acidithiobacillus thiooxidans under Acidic Conditions for Biogas Desulfurization

Department of Civil and Environmental Engineering, Sejong University, 98 Gunja-Dong, Seoul 143-747, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Christian Kennes
Received: 23 September 2014 / Revised: 8 December 2014 / Accepted: 19 January 2015 / Published: 27 January 2015
(This article belongs to the Special Issue Bioprocesses for Air Pollution Control)
View Full-Text   |   Download PDF [1335 KB, uploaded 28 January 2015]   |  

Abstract

In this study, to simulate a biogas desulfurization process, a modified Monod-Gompertz kinetic model incorporating a dissolved oxygen (DO) effect was proposed for a sulfur-oxidizing bacterial (SOB) strain, Acidithiobacillus thiooxidans, under extremely acidic conditions of pH 2. The kinetic model was calibrated and validated using experimental data obtained from a bubble-column bioreactor. The SOB strain was effective for H2S degradation, but the H2S removal efficiency dropped rapidly at DO concentrations less than 2.0 mg/L. A low H2S loading was effectively treated with oxygen supplied in a range of 2%–6%, but a H2S guideline of 10 ppm could not be met, even with an oxygen supply greater than 6%, when the H2S loading was high at a short gas retention time of 1 min and a H2S inlet concentration of 5000 ppm. The oxygen supply should be increased in the aerobic desulfurization to meet the H2S guideline; however, the excess oxygen above the optimum was not effective because of the decline in oxygen efficiency. The model estimation indicated that the maximum H2S removal rate was approximately 400 ppm/%-O2 at the influent oxygen concentration of 4.9% under the given condition. The kinetic model with a low DO threshold for the interacting substrates was a useful tool to simulate the effect of the oxygen supply on the H2S removal and to determine the optimal oxygen concentration. View Full-Text
Keywords: biogas desulfurization; sulfur oxidizing bacteria; Acidithiobacillus thiooxidans; acidic condition; dual growth kinetic; model simulation biogas desulfurization; sulfur oxidizing bacteria; Acidithiobacillus thiooxidans; acidic condition; dual growth kinetic; model simulation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Namgung, H.-K.; Song, J. The Effect of Oxygen Supply on the Dual Growth Kinetics of Acidithiobacillus thiooxidans under Acidic Conditions for Biogas Desulfurization. Int. J. Environ. Res. Public Health 2015, 12, 1368-1386.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Int. J. Environ. Res. Public Health EISSN 1660-4601 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top