Analysis of Three-dimensional Fluorescence Characteristics of Extracellular Polymeric Substances at Internal Points in MPR at Low Temperature

Autor:	Xin Liu, Xi Tian, Yanhong Lv, Xuejiao Li, Zhiming Ren, Dejun Bian, Liu Ying
Rok vydání:	2021
Předmět:	Excitation wavelength Extracellular polymeric substance Chemistry Three dimensional fluorescence Bioreactor Analytical chemistry Flow pattern Fluorescence Spectral line Fluorescence spectroscopy
Zdroj:	IOP Conference Series: Earth and Environmental Science. 706:012027
ISSN:	1755-1315 1755-1307
DOI:	10.1088/1755-1315/706/1/012027
Popis:	Through three-dimension excitation emission matrix (EEM) fluorescence spectroscopy and fluorescence regional integration (FRI), the content and composition changes of extracellular polymeric substances (EPS) in different regions in the Micro-Pressure Inner-Loop Bioreactor (MPR) were analyzed, and the law of EPS in spatial points was found. The analysis shows that the high excitation wavelength tryptophan-like Peak T1 and the low excitation wavelength tyrosine-like Peak B appear in the spectra of tightly-bounded EPS (TB-EPS) and loosely-bounded EPS (LB-EPS) at different points. The content of protein substances in EPS is relatively high. In addition, the unique flow pattern in the reactor forms a multi-oxygen zone, which causes the total amount of EPS and the content of various organic substances, especially protein substances, to increase from the center of the reactor to the outside.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b33f8a40089d14f0cae88893a0fc1bd3 https://doi.org/10.1088/1755-1315/706/1/012027 Zobrazit plný text záznamu