AUTOTROPHIC DENITRIFICATION USING ELEMENTAL SULFUR Academic Article

abstract

• Autotrophic denitrification processes using reduced sulfur compounds are alternatives to heterotrophic denitrification processes using organic carbon compounds. The feasibility of an autotrophic process using elemental sulfur in a slurry reactor system was evaluated in a series of continuous culture experiments using enrichment cultures of Thiobacillus denitrificans. The effects of solids retention time, sulfur feed rate, and temperature on reaction kinetics and stoichiometry were studied. Essentially complete nitrate removal (> 99.5 percent) was observed using a synthetic feed containing 30 mg/l NO3-N. Reaction stoichiometry was nearly constant over the range of experimental conditions. Solids separation characteristics of the sulfurbiomass slurry were measured in flocculent and zone settling tests. Relative costs for autotrophic and heterotrophic processes are closely related to the behavior of the sulfur and methanol markets.

authors

• Batchelor, Bill

published proceedings

• JOURNAL WATER POLLUTION CONTROL FEDERATION

author list (cited authors)

• BATCHELOR, B., & LAWRENCE, A. W.

complete list of authors

• BATCHELOR, B||LAWRENCE, AW

publication date

• January 1978

published in

• Journal - Water Pollution Control Federation  Journal

start page

• 1986

end page

• 2001

volume

• 50

issue

• 8