Effect of biologically produced sulfur on gas absorption in a biotechnological hydrogen sulfide removal process

Biotechnology and Bioengineering
Wilfred E KleinjanAlbert J H Janssen

Abstract

Absorption of hydrogen sulfide in aqueous suspensions of biologically produced sulfur particles was studied in a batch stirred cell reactor, and in a continuous set-up, consisting of a lab-scale gas absorber column and a bioreactor. Presence of biosulfur particles was found to enhance the absorption rate of H(2)S gas in the mildly alkaline liquid. The mechanism for this enhancement was however found to depend on the type of particles used. In the gently stirred cell reactor only small hydrophilic particles were present (d(p) < 3 microm) and the enhancement of the H(2)S absorption rate can be explained from the heterogeneous reaction between dissolved H(2)S and solid elemental sulfur to polysulfide ions, S(x) (2-). Conditions favoring enhanced H(2)S absorption for these hydrophilic particles are: low liquid side mass transfer (k(L)), high sulfur content, and presence of polysulfide ions. In the set-up of gas absorber column and bioreactor, both small hydrophilic particles and larger, more hydrophobic particles were continuously produced (d(p) up to 20 microm). Here, observed enhancement could not be explained by the heterogeneous reaction between sulfide and sulfur, due to the relatively low specific particle surface area, high ...Continue Reading

References

Jan 1, 1970·Antonie van Leeuwenhoek·P A Tyler
Apr 1, 1999·Biotechnology and Bioengineering·A J JanssenG Lettinga
Jun 28, 2005·Colloids and Surfaces. B, Biointerfaces·Wilfred E KleinjanAlbert J H Janssen
Jan 5, 1990·Biotechnology and Bioengineering·C J BuismanG Lettinga
Aug 5, 1995·Biotechnology and Bioengineering·A J JanssenG Lettinga

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Citations

Jul 25, 2009·Water Research·Guangming JiangZhiguo Yuan
Nov 26, 2008·The Science of the Total Environment·Albert J H JanssenCees J N Buisman
Jan 12, 2007·Biotechnology and Bioengineering·Pim L F van den BoschAlbert J H Janssen
May 29, 2008·Environmental Science & Technology·Pim L F van den BoschAlbert J H Janssen

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