Bioconversion of High Concentrations of Hydrogen Sulfide to Elemental Sulfur in Airlift Bioreactor

Table 1

Comparison between the maximum elimination capacity of the current airlift bioreactor and other studies.

Type of bioreactor	Sulfide feed form	Maximum EC	Reference
Biofilter packed with sodium alginate beads	H2S gas	8 g H2S m^−3 h^−1	[3]
Fixed film bioscrubber	H2S gas	19.4 g H2S m^−3 h^−1	[5]
Biofilter packed with organic materials	H2S gas	79 g H2S m^−3 h^−1	[6]
Biotrickling filter packed with polyurethane foam	H2S gas	55 g S m^−3 h^−1	[2]
Biofilter packed with GAC	H2S gas	125 g H2S m^−3 h^−1	[25]
Biotrickling filter packed with polyurethane foam	H2S gas	170 g S m^−3 h^−1	[26]
Industrial scale biotrickling filter packed with polypropylene Pall rings	H2S gas	110 g H2S m^−3 h^−1	[27]
Airlift bioreactor	Sulfide solution	4.3 kg S/kg VSS·d; (≈160 g S m^−3 h^−1)	[29]
Airlift bioreactor	Sulfide solution	6.7 mol/m^3·h; (214.4 g S m^−3 h^−1)	[35]
Airlift bioreactor	H2S gas	113 g H2S m^−3 h^−1	This study