{Reference Type}: Journal Article
{Title}: Algal-mediated nitrogen removal and sustainability of algal-derived dissolved organic matter supporting denitrification.
{Author}: Wan H;Wang K;Luo X;Zhang C;Deng K;Lin S;Xie J;Luo Q;Lei X;Ding L;
{Journal}: Bioresour Technol
{Volume}: 407
{Issue}: 0
{Year}: 2024 Sep 6
{Factor}: 11.889
{DOI}: 10.1016/j.biortech.2024.131083
{Abstract}: 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.