title: Activity test for biological sulfate reduction.
abstract: Biofilm reactors with turbulent agitation are often the best choice for sulfate reduction using hydrogen as electron donor for treatment of metal sulfate wastewater. In this paper, a simple activity set-up with self aspiration of gas into liquid is described for determining the sulphidogenic activity of biofilms on polystyrene beads. Sulfate reducing bacteria attached to the beads of size 1-2 mm and 2 mm were found helpful for 0.058 g SO4(2-) reduction per g of dry beads per day and 0.33 g SO4(2-) reduction per g of dry beads respectively. Also it is observed that zinc has no impact on this activity at the concentration of 680 mg/L.
authors.affiliation: School of Engineering, Cochin University of Science and Technology (CUSAT), Kochi 682 022, Kerala, India. linkrenu@satyam.net.in
authors.forename: Renu
authors.initials: R
authors.lastname: Pawels
authors.forename: Ajit
authors.initials: A
authors.lastname: Haridas
authors.forename: Babu T
authors.initials: BT
authors.lastname: Jose
mesh_terms: D019149:Bioreactors; D011137:Polystyrenes; D013431:Sulfates / Q000378:metabolism*; D016999:Sulfur-Reducing Bacteria / Q000378:metabolism*; D014865:Waste Disposal, Fluid; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D011137:Polystyrenes; D013431:Sulfates; D014874:Water Pollutants, Chemical