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
Aug 4, 2012·Environmental Technology·Qiang HeHenri Spanjers
Jun 8, 2014·Bioresource Technology·I RamosM Fdz-Polanco
Sep 19, 2015·Journal of Applied Microbiology·A S R NordgårdI Bakke
Mar 26, 2011·Bioresource Technology·B TartakovskyS R Guiot
Feb 24, 2015·Biotechnology Advances·Dana Pokorna, Jana Zabranska
May 18, 2012·Bioresource Technology·Xi-jun XuDuu-jong Lee
May 31, 2014·Bioresource Technology·I RamosM Fdz-Polanco
Oct 2, 2014·Bioresource Technology·Lucie KrayzelovaPavel Jenicek
Jun 6, 2015·Bioresource Technology·I DíazM Fdz-Polanco
Sep 13, 2011·Bioresource Technology·I DíazM Fdz-Polanco
Oct 13, 2014·Bioresource Technology·Long D NghiemShona K Fitzgerald
May 4, 2016·Bioresource Technology·Bo WangShuying Wang
Jun 29, 2016·Environmental Technology·José Tavares de SousaWilton Silva Lopes
Apr 21, 2017·International Journal of Molecular Sciences·Ramiro Blasco-GómezSebastià Puig
Jun 12, 2018·Environmental Technology·M R SousaA B Dos Santos
Feb 17, 2018·Environmental Technology·Priscila Rosseto CamilotiDavid Jeison
Sep 1, 2021·Environmental Technology·I M P CastroC L Souza
Jan 11, 2020·The Science of the Total Environment·Qing ChenZihao Zhao