Biofiltration control of pulping odors – hydrogen sulfide: performance, macrokinetics and coexistence effects of organo-sulfur species
✍ Scribed by Altaf H Wani; Anthony K Lau; Richard MR Branion
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1999
- Tongue
- English
- Weight
- 319 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0268-2575
No coin nor oath required. For personal study only.
✦ Synopsis
The work reported here describes the aerobic biodegradation of reduced sulfur compound mixtures in air streams by bioülters. Rates of removal of hydrogen sulüde as a sole substrate and in the presence of organo-sulfur compounds were determined to see if there were any inhibitory eþ ects of the organo-sulfur compounds on the rate of hydrogen sulüde removal. Experiments were conducted in three bench-scale bioülters packed with the mixtures of compost/perlite (4 : 1), hog fuel/ perlite (4 : 1), and compost/hog fuel/perlite (2 : 2 : 1), respectively. Hydrogen sulüde, the predominant odorous gas produced from kraft pulping processes, was used as the main pollutant (substrate). Other organo-sulfur species (dimethyl sulüde and dimethyl disulüde), also emitted from kraft pulp mills, were used as competing (secondary) substrates in the waste gas stream. To describe rates of removal a Michaelis-Menten type kinetic equation was modiüed to incorporate the plug ýow behavior of bioülters, and used in evaluating the pseudo-kinetic parameters, (the maximum removal rate) and V max (the half saturation concentration), for hydrogen sulüde biodegradation, and the type of macro-K m kinetic competition between hydrogen sulüde and the organo-sulfur compounds. No signiücant diþ erences in for the three bioülters were observed. The ranged between 136 and 147 g m-3 h-1, V max V max while the varied from 44 to 59 ppmv for the three bioülters. Hydrogen sulüde elimination capacity K m was not aþ ected by the presence of any of the organo-sulfur species in all of the three bioülters, conürming earlier results that hydrogen sulüde removal in bioülters is independent of the presence of organo-sulfur compounds mainly because of its easy biodegradability.