Advantages of anaerobic digestion of sludge in microaerobic conditions

Water Science and Technology : a Journal of the International Association on Water Pollution Research
P JenicekJ Zabranska

Abstract

The paper reviews results and experience of microaerobic experiments at both high and low sulphide concentrations and evaluates advantages and drawbacks of the anaerobic digestion of sludge in microaerobic conditions as regards biogas quality, digested sludge quality, organic pollutants biodegradability and methanogenic activity of biomass. The innovative microaerobic modification of the anaerobic sludge digestion technology was studied in both laboratory and full scale. Microaerobic conditions are obtained by dosing of a limited amount of the air into the liquid phase of the anaerobic digester. It was shown that anaerobic bacteria including methanogens can be active also in such system. In a mixed culture, even strict anaerobes can survive without inhibition, if the facultative microorganisms are able to consume the present oxygen quickly and fully. Until now, the microaerobic conditions were predominantly used for hydrogen sulphide removal from biogas. In the paper the role of the surplus oxygen was studied also at low sulphide concentration, when the oxygen is consumed in high extent for other processes beside sulphide oxidation.

Citations

Aug 21, 2012·Bioprocess and Biosystems Engineering·James DiakKevin J Kennedy
Jun 8, 2014·Bioresource Technology·I RamosM Fdz-Polanco
Mar 26, 2011·Bioresource Technology·B TartakovskyS R Guiot
Feb 24, 2015·Biotechnology Advances·Dana Pokorna, Jana Zabranska
Oct 2, 2014·Bioresource Technology·Lucie KrayzelovaPavel Jenicek
Sep 13, 2011·Bioresource Technology·I DíazM Fdz-Polanco
Jun 29, 2016·Environmental Technology·José Tavares de SousaWilton Silva Lopes
Apr 21, 2017·International Journal of Molecular Sciences·Ramiro Blasco-GómezSebastià Puig
Feb 17, 2018·Environmental Technology·Priscila Rosseto CamilotiDavid Jeison
Jan 11, 2020·The Science of the Total Environment·Qing ChenZihao Zhao

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofuels (ASM)

Biofuels are produced through contemporary processes from biomass rather than geological processes involved in fossil fuel formation. Examples include biodiesel, green diesel, biogas, etc. Discover the latest research on biofuels in this feed.

Related Papers

Water Science and Technology : a Journal of the International Association on Water Pollution Research
P JenicekJ Bindzar
Water Science and Technology : a Journal of the International Association on Water Pollution Research
P JenicekD Pokorna
Water Science and Technology : a Journal of the International Association on Water Pollution Research
I Díaz, M Fdz-Polanco
© 2021 Meta ULC. All rights reserved