%0 Journal Article
%T Algal-mediated nitrogen removal and sustainability of algal-derived dissolved organic matter supporting denitrification.
%A Wan H
%A Wang K
%A Luo X
%A Zhang C
%A Deng K
%A Lin S
%A Xie J
%A Luo Q
%A Lei X
%A Ding L
%J Bioresour Technol
%V 407
%N 0
%D 2024 Sep 6
%M 38972430
%F 11.889
%R 10.1016/j.biortech.2024.131083
%X Algae-mediated nitrogen removal from low carbon vs. nitrogen (C/N) wastewater techniques has garnered significant attention due to its superior autotrophic assimilation properties. This study investigated the ammonium-N removal potential of four algae species from low C/N synthetic wastewater. Results showed that 95 % and 99 % of ammonium-N are eliminated at initial concentrations of 11.05 ± 0.98 mg/L and 42.51 ± 2.20 mg/L with little nitrate and nitrite accumulation. The compositions of secreted algal-derived dissolved organic matter varied as C/N decreased and showed better bioavailability for nitrate-N removal by Pseudomonas sp. SZF15 without pre-oxidation, achieving an efficiency of 99 %. High-throughput sequencing revealed that the aquatic microbial communities, dominated by Scenedesmus, Kalenjinia, and Micractinium, remain relatively stable across different C/N, aligning with the underlying metabolic pathways. These findings may provide valuable insights into the sustainable elimination of multiple nitrogen contaminants from low C/N wastewater.