Elemental sulfur formation and nitrogen removal from wastewaters by autotrophic denitrifiers and anammox bacteria. (September 2015)

• Record Type: Journal Article
• Authors: Liu, Chunshuang; Zhao, Dongfeng; Yan, Laihong; Wang, Aijie; Gu, Yingying; Lee, Duu-Jong
• Is Part Of: Bioresource technology. Volume 191(2015)
• Page Start: 332
• Page End: 336
• Publication Date: 2015-09
• Subjects: Autotrophic denitrifier -- Anammox -- Elemental sulfur -- Sulfide; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2015.05.027
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Denitrifying ammonium oxidation (DEAMOX) reactor was tested. Elemental sulfur (S 0 ) was accumulated with nitrogen being removed as nitrogen gas. Autotrophic denitrifiers and anaerobic ammonium oxidation bacteria were grown. The sulfide to nitrate ratio of 1.31:1 could lead to excess accumulation of S 0 . Alishewanella, Thauera and Candidatus Anammoximicrobium were the key strains. Abstract: Elemental sulfur (S 0 ) formation from and nitrogen removal on sulfide, nitrate and ammonium-laden wastewaters were achieved by denitrifying ammonium oxidation (DEAMOX) reactor with autotrophic denitrifiers and anaerobic ammonium oxidation (anammox) bacteria. The sulfide to nitrate ratio is a key process parameter for excess accumulation of S 0 and a ratio of 1.31:1 is a proposed optimum. The Alishewanella, Thauera and Candidatus Anammoximicrobium present respectively the autotrophic denitrifiers and anammox bacteria for the reactor. DEAMOX is demonstrated promising biological process for treating organics-deficient (S+N) wastewaters with excess S 0 production.