MESSAI.iO

AI summary

100% confidence

MEC research in bacteria, wastewater. ABSTRACT The influence of freezing-thawing (F/T) pretreatment on the degradation of highly concentra...

Generated by MESSAI extraction pipeline · review against source PDF

Generic MECRepresentative model
Click to animate flow
loading 3D model…

Representative MEC — matched on the paper’s system type only, not its reactor or geometry.

Extraction

Reported parameters

2 extracted values

View extracted values

Open in lab for full controls, parameter editing, and template overlays.

Open in lab →

What they did

System
MEC

What worked

No outcome metrics extracted yet.

Abstract

ABSTRACT The influence of freezing-thawing (F/T) pretreatment on the degradation of highly concentrated organic matters from dewatered sludge (DS) in microbial electrolysis cell (MEC) was investigated in this study. Extended freezing disintegrated the DS matrix and resulted in accelerated hydrolysis rate. The biogas production and stabilization were increased due to the pretreatment by 25–70% of H2 production rate and 17.8–33.8% of COD reduction rate, respectively. Fourier transform infrared spectroscopy analysis indicated that the pretreatment was unable to alter the bioelectrochemical reactions except for accelerating degradation rate. Excitation and emission matrix (EEM) spectra showed that aromatic protein and soluble microbial products (SMPs)-like materials in DS were increasingly solubilized by the pretreatment and significantly removed during electrogenesis. The F/T-pretreated DS favored the enrichment of exoelectrogens in MEC. Graphical Abstract

Keywords

Degradation (telecommunications)ElectrolysisHydrolysisFourier transform infrared spectroscopyMatrix (chemical analysis)Biodegradation

Identifiers

DOI
10.1080/21655979.2020.1736735
Journal
Bioengineered
Year
2020