Nitric oxide removal from flue gas with ammonium using AnammoxDeNOx process and its application in municipal sewage treatment. (October 2018)

• Record Type: Journal Article
• Authors: Wang, Xiaojing; Xu, Xiaochen; Zou, Yu; Yang, Fenglin; Zhang, Yun
• Is Part Of: Bioresource technology. Volume 265(2018)
• Page Start: 170
• Page End: 179
• Publication Date: 2018-10
• Subjects: AnammoxDeNOx -- Anammox biofilter -- Fe(II)EDTA -- NOx removal -- Municipal sewage treatment; 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.2018.05.096
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Simultaneous removal of NOx and NH4 + using novel AnammoxDeNOx process. Optimal NO removal efficiency of 90.86% and TN removal rate of 67.447 mg N/h. NO2 and SO2 of flue gas were advantageous for removal of NOx. Candidatus Brocadia became the dominant anammox specie. Abstract: A novel AnammoxDeNOx process was designed to simultaneously remove NOx in flue gas and ammonium wastewater, with the aim of exploring the possibility of using NO as a long-term and stable electron acceptor for anammox bacteria. The performance of the AnammoxDeNOx process indicated a NOx removal efficiency from simulated flue gas (including CO2, SO2, O2 and NO2 ) of 87–96% using simulated ammonium wastewater. With municipal wastewater, the removal efficiencies for NOx were 70–90%, total nitrogen 40–70%, and COD 80–90% (NO concentration: 100–500 ppm). The anammox genus underwent considerable changes from the dominant Candidatus Kuenenia in the stage of domestication to the predominant Candidatus Brocadia, which then became the dominant species in the simulated flue gas and actual municipal wastewater stages.