New perspective on effect of β-cyclodextrin on nitrification-denitrification and denitrification phosphorus removal in biogenic manganese oxides driven moving bed biofilm reactor: Performance evaluation, microbial community and process

Sicheng Shao; Mengcheng Sheng; Yingzi Ye; Chunxiao Wang; Dandan Pan; Xiangwei Wu

doi:10.1016/j.biortech.2023.129502

New perspective on effect of β-cyclodextrin on nitrification-denitrification and denitrification phosphorus removal in biogenic manganese oxides driven moving bed biofilm reactor: Performance evaluation, microbial community and process

Bioresour Technol. 2023 Oct:386:129502. doi: 10.1016/j.biortech.2023.129502. Epub 2023 Jul 26.

Authors

Sicheng Shao¹, Mengcheng Sheng¹, Yingzi Ye¹, Chunxiao Wang¹, Dandan Pan¹, Xiangwei Wu²

Affiliations

¹ College of Resources and Environment, Anhui Agricultural University, Key Laboratory of Agri-food Safety of Anhui Province, Hefei 230036, PR China.
² College of Resources and Environment, Anhui Agricultural University, Key Laboratory of Agri-food Safety of Anhui Province, Hefei 230036, PR China. Electronic address: wxwahau@ahau.edu.cn.

PMID: 37506947
DOI: 10.1016/j.biortech.2023.129502

Abstract

Effect of β-cyclodextrin (β-CD) on simultaneous removal of NH₄⁺-N, NO₃^--N, COD, and phosphorus (P) in biogenic manganese oxides (BioMnOx) driven moving bed biofilm reactor (MBBR) was investigated. 58.64% and 86.32%, 79.65% and 98.39%, 62.45% and 97.30%, and 24.80% and 95.90% of TN and COD were removed in phases I-IV, indicating that simultaneous nitrification and denitrification (SND) efficiencies were 75.44%, 83.91%, 72.71%, and 35.83%, respectively. Composition and fluorescence spectral characteristics of extracellular polymeric substance (EPS) were evaluated including the removal kinetics of TN and COD. Metabolic activity of Mn²⁺, decolorization performance of BioMnOx, and reactive oxygen species (ROS) characteristics were determined in biofilm. Furthermore, intermediate Mn³⁺ and BioMnOx concentration were analyzed. Finally, the removal process of nitrogen (N) and P was proposed based on characterizations of elemental characterization, electrochemistry, and microbial community. This study provides new insights into the N and P removal mediated by BioMnOx and β-CD.

Keywords: Denitrification; Microbial community; Moving bed biofilm reactor (MBBR); Nitrification; β-cyclodextrin (β-CD).

MeSH terms

Biofilms
Bioreactors
Denitrification
Extracellular Polymeric Substance Matrix
Manganese
Microbiota*
Nitrification
Nitrogen / chemistry
Oxides
Phosphorus
Waste Disposal, Fluid
Wastewater
beta-Cyclodextrins*

Substances

Wastewater
Manganese
Phosphorus
manganese oxide
Oxides
Nitrogen
beta-Cyclodextrins