Impact of light on anoxic/oxic reactors: performance, quorum sensing, and metagenomic characteristics

The effect of light has raised attention on wastewater treatment. However, little research has concentrated on the influences of light on activated sludge. In this study, the influences of light on the performance, quorum sensing (QS) and metagenomic characteristics of anoxic/oxic reactors were inve...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Xuening Fei, Songya Li, Linpei Wang, Le Wang, Fuqiang Chen
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	illumination anoxic/oxic reactor influence mechanism metagenomic prediction quorum sensing Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/e74fa30ad8934f758a0d1a7aa653512e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:e74fa30ad8934f758a0d1a7aa653512e
record_format	dspace
spelling	oai:doaj.org-article:e74fa30ad8934f758a0d1a7aa653512e2021-11-06T11:22:23ZImpact of light on anoxic/oxic reactors: performance, quorum sensing, and metagenomic characteristics0273-12231996-973210.2166/wst.2021.338https://doaj.org/article/e74fa30ad8934f758a0d1a7aa653512e2021-09-01T00:00:00Zhttp://wst.iwaponline.com/content/84/6/1452https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732The effect of light has raised attention on wastewater treatment. However, little research has concentrated on the influences of light on activated sludge. In this study, the influences of light on the performance, quorum sensing (QS) and metagenomic characteristics of anoxic/oxic reactors were investigated. The reactor without light (AO1) showed higher total nitrogen (TN) removal (79.15 ± 1.69%) than the reactor with light (AO2) (74.54 ± 1.30%), and significant differences were observed. It was observed that light facilitated the production of protein-like and tryptophan-like substances by employing parallel factor analysis for extracellular polymeric substance (EPS), resulting in more EPS production in AO2, indicating light was beneficial to EPS production. The concentrations of N-acyl-homoserine lactones (AHLs) were various in the two reactors, so the AHLs-mediated QS behaviors in both reactors were also different. These results revealed that light significantly influenced nitrogen removal, EPS, and QS. Metagenomic analysis based on Tax4Fun demonstrated that light reduced the denitrification, stimulated the polysaccharide and protein biosynthesis pathways and down-regulated the AHLs synthesis pathway, resulting in lower TN removal, more EPS production, and lower AHLs concentrations. Based on the above, the likely mechanism was proposed for the influences of light on the reactor. HIGHLIGHTS Effect of light on performance, quorum sensing (QS) and metagenomic were studied.; Light significantly deteriorated the total nitrogen removal.; Light facilitated the production of extracellular polymeric substance (EPS).; Tax4Fun was used to predict the metagenomic information.; Metagenomic information reveals the nature of light effect on nitrogen, EPS and QS.;Xuening FeiSongya LiLinpei WangLe WangFuqiang ChenIWA Publishingarticleilluminationanoxic/oxic reactorinfluence mechanismmetagenomic predictionquorum sensingEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 6, Pp 1452-1463 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	illumination anoxic/oxic reactor influence mechanism metagenomic prediction quorum sensing Environmental technology. Sanitary engineering TD1-1066
spellingShingle	illumination anoxic/oxic reactor influence mechanism metagenomic prediction quorum sensing Environmental technology. Sanitary engineering TD1-1066 Xuening Fei Songya Li Linpei Wang Le Wang Fuqiang Chen Impact of light on anoxic/oxic reactors: performance, quorum sensing, and metagenomic characteristics
description	The effect of light has raised attention on wastewater treatment. However, little research has concentrated on the influences of light on activated sludge. In this study, the influences of light on the performance, quorum sensing (QS) and metagenomic characteristics of anoxic/oxic reactors were investigated. The reactor without light (AO1) showed higher total nitrogen (TN) removal (79.15 ± 1.69%) than the reactor with light (AO2) (74.54 ± 1.30%), and significant differences were observed. It was observed that light facilitated the production of protein-like and tryptophan-like substances by employing parallel factor analysis for extracellular polymeric substance (EPS), resulting in more EPS production in AO2, indicating light was beneficial to EPS production. The concentrations of N-acyl-homoserine lactones (AHLs) were various in the two reactors, so the AHLs-mediated QS behaviors in both reactors were also different. These results revealed that light significantly influenced nitrogen removal, EPS, and QS. Metagenomic analysis based on Tax4Fun demonstrated that light reduced the denitrification, stimulated the polysaccharide and protein biosynthesis pathways and down-regulated the AHLs synthesis pathway, resulting in lower TN removal, more EPS production, and lower AHLs concentrations. Based on the above, the likely mechanism was proposed for the influences of light on the reactor. HIGHLIGHTS Effect of light on performance, quorum sensing (QS) and metagenomic were studied.; Light significantly deteriorated the total nitrogen removal.; Light facilitated the production of extracellular polymeric substance (EPS).; Tax4Fun was used to predict the metagenomic information.; Metagenomic information reveals the nature of light effect on nitrogen, EPS and QS.;
format	article
author	Xuening Fei Songya Li Linpei Wang Le Wang Fuqiang Chen
author_facet	Xuening Fei Songya Li Linpei Wang Le Wang Fuqiang Chen
author_sort	Xuening Fei
title	Impact of light on anoxic/oxic reactors: performance, quorum sensing, and metagenomic characteristics
title_short	Impact of light on anoxic/oxic reactors: performance, quorum sensing, and metagenomic characteristics
title_full	Impact of light on anoxic/oxic reactors: performance, quorum sensing, and metagenomic characteristics
title_fullStr	Impact of light on anoxic/oxic reactors: performance, quorum sensing, and metagenomic characteristics
title_full_unstemmed	Impact of light on anoxic/oxic reactors: performance, quorum sensing, and metagenomic characteristics
title_sort	impact of light on anoxic/oxic reactors: performance, quorum sensing, and metagenomic characteristics
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/e74fa30ad8934f758a0d1a7aa653512e
work_keys_str_mv	AT xueningfei impactoflightonanoxicoxicreactorsperformancequorumsensingandmetagenomiccharacteristics AT songyali impactoflightonanoxicoxicreactorsperformancequorumsensingandmetagenomiccharacteristics AT linpeiwang impactoflightonanoxicoxicreactorsperformancequorumsensingandmetagenomiccharacteristics AT lewang impactoflightonanoxicoxicreactorsperformancequorumsensingandmetagenomiccharacteristics AT fuqiangchen impactoflightonanoxicoxicreactorsperformancequorumsensingandmetagenomiccharacteristics
_version_	1718443703842897920

Impact of light on anoxic/oxic reactors: performance, quorum sensing, and metagenomic characteristics

Ejemplares similares