Improving the Continuous Multiple Tube Reactor: an Innovative Bioreactor Configuration with Great Potential for Dark Fermentation Processes

Improving the Continuous Multiple Tube Reactor: an Innovative Bioreactor Configuration with Great Potential for Dark Fermentation Processes

The continuous multiple tube reactor (CMTR) has been developed as a promising technology to maximize biohydrogen production (BHP) by dark fermentation (DF) by preventing excess biomass accumulation, leading to suboptimum values of specific organic loading rates (SOLR). However, previous experiences...

Full description

Saved in:
Bibliographic Details
Published in:Applied biochemistry and biotechnology Vol. 196; no. 1; pp. 457 - 477
Main Authors: Trevisan, Ana Paula, Lied, Eduardo Borges, Fuess, Lucas Tadeu, Zaiat, Marcelo, de Souza, Willyan Goergen, Gomes, Simone Damasceno, Gomes, Benedito Martins
Format: Journal Article
Language:English
Published: New York Springer US 2024
Springer Nature B.V
Subjects:
Biochemistry
Biohydrogen
Biomass
Bioreactors
Biotechnology
Cell adhesion
Chemistry
Chemistry and Materials Science
Fermentation
Grooves
Hydraulic retention time
Loading rate
Organic loading
Original Article
Reactors
Retention
Retention capacity
Retention time
Sucrose
Tubes
Organic load rate
Acidogenesis
Sucrose
Dark fermentation
Ratio F/M
Anaerobic digestion
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The continuous multiple tube reactor (CMTR) has been developed as a promising technology to maximize biohydrogen production (BHP) by dark fermentation (DF) by preventing excess biomass accumulation, leading to suboptimum values of specific organic loading rates (SOLR). However, previous experiences failed to achieve stable and continuous BHP in this reactor, as the low biomass retention capacity in the tube region limited controlling the SOLR. This study goes beyond the evaluation of the CMTR for DF by inserting grooves in the inner wall of the tubes to ensure better cell attachment. The CMTR was monitored in 4 assays at 25ºC using sucrose-based synthetic effluent. The hydraulic retention time (HRT) was fixed at 2 h, while the COD varied between 2–8 g L −1 to obtain organic loading rates in the 24 – 96 g COD L −1 d −1 . Long-term (90 d) BHP was successfully attained in all conditions due to the improved biomass retention capacity. Optimal values for the SOLR (4.9 g COD g −1 VSS d −1 ) were observed when applying up to 48 g COD L −1 d −1 , in which BHP was maximized. These patterns indicate a favorable balance between biomass retention and washout was naturally achieved. The CMTR looks promising for continuous BHP and is exempt from additional biomass discharge strategies.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0273-2289
1559-0291
DOI:10.1007/s12010-023-04553-3