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Anaerobic digestibility of marine microalgae Phaeodactylum tricornutum in a lab-scale anaerobic membrane bioreactor

Carlos Enrique Zamalloa Nalvarte UGent, Jo De Vrieze UGent, Nico Boon UGent and Willy Verstraete UGent (2012) APPLIED MICROBIOLOGY AND BIOTECHNOLOGY. 93(2). p.859-869
abstract
The biomass of industrially grown Phaeodactylum tricornutum was subjected in a novel way to bio-methanation at 33A degrees C, i.e., in an anaerobic membrane bioreactor (AnMBR) at a hydraulic retention time of 2.5 days, at solid retention times of 20 to 10 days and at loading rates in the range of 2.6-5.9 g biomass-COD L(-1) day(-1) with membrane fluxes ranging from 1 to 0.8 L m(-2) h(-1). The total COD recovered as biogas was in the order of 52%. The input suspension was converted to a clear effluent rich in total ammonium nitrogen (546 mg TAN L(-1)) and phosphate (141 mg PO(4)-P L(-1)) usable as liquid fertilizer. The microbial community richness, dynamics, and organization in the reactor were interpreted using the microbial resource management approach. The AnMBR communities were found to be moderate in species richness and low in dynamics and community organization relative to UASB and conventional CSTR sludges. Quantitative polymerase chain reaction analysis revealed that Methanosaeta sp. was the dominant acetoclastic methanogen species followed by Methanosarcina sp. This work demonstrated that the use of AnMBR for the digestion of algal biomass is possible. The fact that some 50% of the organic matter is not liquefied means that the algal particulates in the digestate constitute a considerable fraction which should be valorized properly, for instance as slow release organic fertilizer. Overall, 1 kg of algae dry matter (DM) could be valorized in the form of biogas (a,not sign2.07), N and P in the effluent (a,not sign0.02) and N and P in the digestate (a,not sign0.04), thus totaling about a,not sign2.13 per kilogram algae DM.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
POPULATION-DYNAMICS, MICROBIAL COMMUNITIES, GRADIENT GEL-ELECTROPHORESIS, WASTE-WATER TREATMENT, 16S RIBOSOMAL-RNA, Microbial resource management, Methane, Biogas, Green energy, Algae biomass, Mesophilic, ACTIVATED-SLUDGE, DIGESTION, PCR, PERFORMANCE, MANAGEMENT
journal title
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
Appl. Microbiol. Biotechnol.
volume
93
issue
2
pages
859 - 869
Web of Science type
Article
Web of Science id
000299120100038
JCR category
BIOTECHNOLOGY & APPLIED MICROBIOLOGY
JCR impact factor
3.689 (2012)
JCR rank
29/157 (2012)
JCR quartile
1 (2012)
ISSN
0175-7598
DOI
10.1007/s00253-011-3624-5
project
Biotechnology for a sustainable economy (Bio-Economy)
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2026983
handle
http://hdl.handle.net/1854/LU-2026983
date created
2012-02-10 13:25:06
date last changed
2014-05-26 10:00:58
@article{2026983,
  abstract     = {The biomass of industrially grown Phaeodactylum tricornutum was subjected in a novel way to bio-methanation at 33A degrees C, i.e., in an anaerobic membrane bioreactor (AnMBR) at a hydraulic retention time of 2.5 days, at solid retention times of 20 to 10 days and at loading rates in the range of 2.6-5.9 g biomass-COD L(-1) day(-1) with membrane fluxes ranging from 1 to 0.8 L m(-2) h(-1). The total COD recovered as biogas was in the order of 52\%. The input suspension was converted to a clear effluent rich in total ammonium nitrogen (546 mg TAN L(-1)) and phosphate (141 mg PO(4)-P L(-1)) usable as liquid fertilizer. The microbial community richness, dynamics, and organization in the reactor were interpreted using the microbial resource management approach. The AnMBR communities were found to be moderate in species richness and low in dynamics and community organization relative to UASB and conventional CSTR sludges. Quantitative polymerase chain reaction analysis revealed that Methanosaeta sp. was the dominant acetoclastic methanogen species followed by Methanosarcina sp. This work demonstrated that the use of AnMBR for the digestion of algal biomass is possible. The fact that some 50\% of the organic matter is not liquefied means that the algal particulates in the digestate constitute a considerable fraction which should be valorized properly, for instance as slow release organic fertilizer. Overall, 1 kg of algae dry matter (DM) could be valorized in the form of biogas (a,not sign2.07), N and P in the effluent (a,not sign0.02) and N and P in the digestate (a,not sign0.04), thus totaling about a,not sign2.13 per kilogram algae DM.},
  author       = {Zamalloa Nalvarte, Carlos Enrique and De Vrieze, Jo and Boon, Nico and Verstraete, Willy},
  issn         = {0175-7598},
  journal      = {APPLIED MICROBIOLOGY AND BIOTECHNOLOGY},
  keyword      = {POPULATION-DYNAMICS,MICROBIAL COMMUNITIES,GRADIENT GEL-ELECTROPHORESIS,WASTE-WATER TREATMENT,16S RIBOSOMAL-RNA,Microbial resource management,Methane,Biogas,Green energy,Algae biomass,Mesophilic,ACTIVATED-SLUDGE,DIGESTION,PCR,PERFORMANCE,MANAGEMENT},
  language     = {eng},
  number       = {2},
  pages        = {859--869},
  title        = {Anaerobic digestibility of marine microalgae Phaeodactylum tricornutum in a lab-scale anaerobic membrane bioreactor},
  url          = {http://dx.doi.org/10.1007/s00253-011-3624-5},
  volume       = {93},
  year         = {2012},
}

Chicago
Zamalloa Nalvarte, Carlos Enrique, Jo De Vrieze, Nico Boon, and Willy Verstraete. 2012. “Anaerobic Digestibility of Marine Microalgae Phaeodactylum Tricornutum in a Lab-scale Anaerobic Membrane Bioreactor.” Applied Microbiology and Biotechnology 93 (2): 859–869.
APA
Zamalloa Nalvarte, C. E., De Vrieze, J., Boon, N., & Verstraete, W. (2012). Anaerobic digestibility of marine microalgae Phaeodactylum tricornutum in a lab-scale anaerobic membrane bioreactor. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 93(2), 859–869.
Vancouver
1.
Zamalloa Nalvarte CE, De Vrieze J, Boon N, Verstraete W. Anaerobic digestibility of marine microalgae Phaeodactylum tricornutum in a lab-scale anaerobic membrane bioreactor. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY. 2012;93(2):859–69.
MLA
Zamalloa Nalvarte, Carlos Enrique, Jo De Vrieze, Nico Boon, et al. “Anaerobic Digestibility of Marine Microalgae Phaeodactylum Tricornutum in a Lab-scale Anaerobic Membrane Bioreactor.” APPLIED MICROBIOLOGY AND BIOTECHNOLOGY 93.2 (2012): 859–869. Print.