Evaluating the effect of enzymatic pretreatment on the anaerobic digestibility of pulp and paper biosludge
Anaerobic digestion of biosludge has not yet been implemented in pulp mills due to low biogas yields. Enzymatic pretreatment of biosludge has shown improvements in biogas yields but results are varied. A key limitation of previous studies is that they fail to consider the COD contribution from the e...
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ftunivtoronto:oai:localhost:1807/99554 2023-05-15T17:54:51+02:00 Evaluating the effect of enzymatic pretreatment on the anaerobic digestibility of pulp and paper biosludge Bonilla, Sofia Choolaei, Zahra Meyer, Torsten Edwards, Elizabeth A Yakunin, Alexander F Allen, D Grant 2018-01-05 http://hdl.handle.net/1807/99554 https://doi.org/10.1016/j.btre.2017.12.009 en eng Elsevier Bonilla, S., Choolaei, Z., Meyer, T., Edwards, E. A., Yakunin, A. F., & Allen, D. G. (2018). Evaluating the effect of enzymatic pretreatment on the anaerobic digestibility of pulp and paper biosludge. Biotechnology Reports, 17, 77–85. doi:10.1016/j.btre.2017.12.009 2215-017X http://hdl.handle.net/1807/99554 doi:10.1016/j.btre.2017.12.009 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ CC-BY Anaerobic digestion Biosludge Enzymes Pretreatment Biogas Article 2018 ftunivtoronto https://doi.org/10.1016/j.btre.2017.12.009 2020-06-17T12:30:10Z Anaerobic digestion of biosludge has not yet been implemented in pulp mills due to low biogas yields. Enzymatic pretreatment of biosludge has shown improvements in biogas yields but results are varied. A key limitation of previous studies is that they fail to consider the COD contribution from the enzyme solutions. The aim of this study was to systematically investigate the potential for enzymatic pretreatment on the anaerobic digestibility of pulp mill biosludge. Out of the six enzymes tested, four enhanced the anaerobic digestibility of biosludge. At the end of the BMP, a maximum improvement of 26% in biogas yield was observed with protease from B. licheniformis. There was no correlation between enzymatic activities on standard substrates and/or on biosludge and the effect of enzymes on biogas yields. Enzymes have potential for improving biosludge anaerobic digestibility but more research on optimal conditions and potential synergies with other pretreatment is needed. This work was part of the research program on “Increasing Energy and Chemical Recovery Efficiency in the Kraft Process”, jointly supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) (CRDPJ 428559-11) and a consortium of the following companies: Andritz, AV Nackawic, Babcock & Wilcox, Boise, Carter Holt Harvey, Celulose Nipo-Brasileira, Clyde-Bergemann, DMI Peace River Pulp, Eldorado, ERCO Worldwide, Fibria, FP Innovations, International Paper, Irving Pulp & Paper, Kiln Flame Systems, Klabin, MeadWestvaco, StoraEnso Research, Suzano, Tembec, Tolko Industries and Valmet. Article in Journal/Newspaper Peace River University of Toronto: Research Repository T-Space Canada Eldorado ENVELOPE(-108.502,-108.502,59.550,59.550) Wilcox ENVELOPE(-66.933,-66.933,-67.949,-67.949) Biotechnology Reports 17 77 85 |
institution |
Open Polar |
collection |
University of Toronto: Research Repository T-Space |
op_collection_id |
ftunivtoronto |
language |
English |
topic |
Anaerobic digestion Biosludge Enzymes Pretreatment Biogas |
spellingShingle |
Anaerobic digestion Biosludge Enzymes Pretreatment Biogas Bonilla, Sofia Choolaei, Zahra Meyer, Torsten Edwards, Elizabeth A Yakunin, Alexander F Allen, D Grant Evaluating the effect of enzymatic pretreatment on the anaerobic digestibility of pulp and paper biosludge |
topic_facet |
Anaerobic digestion Biosludge Enzymes Pretreatment Biogas |
description |
Anaerobic digestion of biosludge has not yet been implemented in pulp mills due to low biogas yields. Enzymatic pretreatment of biosludge has shown improvements in biogas yields but results are varied. A key limitation of previous studies is that they fail to consider the COD contribution from the enzyme solutions. The aim of this study was to systematically investigate the potential for enzymatic pretreatment on the anaerobic digestibility of pulp mill biosludge. Out of the six enzymes tested, four enhanced the anaerobic digestibility of biosludge. At the end of the BMP, a maximum improvement of 26% in biogas yield was observed with protease from B. licheniformis. There was no correlation between enzymatic activities on standard substrates and/or on biosludge and the effect of enzymes on biogas yields. Enzymes have potential for improving biosludge anaerobic digestibility but more research on optimal conditions and potential synergies with other pretreatment is needed. This work was part of the research program on “Increasing Energy and Chemical Recovery Efficiency in the Kraft Process”, jointly supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) (CRDPJ 428559-11) and a consortium of the following companies: Andritz, AV Nackawic, Babcock & Wilcox, Boise, Carter Holt Harvey, Celulose Nipo-Brasileira, Clyde-Bergemann, DMI Peace River Pulp, Eldorado, ERCO Worldwide, Fibria, FP Innovations, International Paper, Irving Pulp & Paper, Kiln Flame Systems, Klabin, MeadWestvaco, StoraEnso Research, Suzano, Tembec, Tolko Industries and Valmet. |
format |
Article in Journal/Newspaper |
author |
Bonilla, Sofia Choolaei, Zahra Meyer, Torsten Edwards, Elizabeth A Yakunin, Alexander F Allen, D Grant |
author_facet |
Bonilla, Sofia Choolaei, Zahra Meyer, Torsten Edwards, Elizabeth A Yakunin, Alexander F Allen, D Grant |
author_sort |
Bonilla, Sofia |
title |
Evaluating the effect of enzymatic pretreatment on the anaerobic digestibility of pulp and paper biosludge |
title_short |
Evaluating the effect of enzymatic pretreatment on the anaerobic digestibility of pulp and paper biosludge |
title_full |
Evaluating the effect of enzymatic pretreatment on the anaerobic digestibility of pulp and paper biosludge |
title_fullStr |
Evaluating the effect of enzymatic pretreatment on the anaerobic digestibility of pulp and paper biosludge |
title_full_unstemmed |
Evaluating the effect of enzymatic pretreatment on the anaerobic digestibility of pulp and paper biosludge |
title_sort |
evaluating the effect of enzymatic pretreatment on the anaerobic digestibility of pulp and paper biosludge |
publisher |
Elsevier |
publishDate |
2018 |
url |
http://hdl.handle.net/1807/99554 https://doi.org/10.1016/j.btre.2017.12.009 |
long_lat |
ENVELOPE(-108.502,-108.502,59.550,59.550) ENVELOPE(-66.933,-66.933,-67.949,-67.949) |
geographic |
Canada Eldorado Wilcox |
geographic_facet |
Canada Eldorado Wilcox |
genre |
Peace River |
genre_facet |
Peace River |
op_relation |
Bonilla, S., Choolaei, Z., Meyer, T., Edwards, E. A., Yakunin, A. F., & Allen, D. G. (2018). Evaluating the effect of enzymatic pretreatment on the anaerobic digestibility of pulp and paper biosludge. Biotechnology Reports, 17, 77–85. doi:10.1016/j.btre.2017.12.009 2215-017X http://hdl.handle.net/1807/99554 doi:10.1016/j.btre.2017.12.009 |
op_rights |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.btre.2017.12.009 |
container_title |
Biotechnology Reports |
container_volume |
17 |
container_start_page |
77 |
op_container_end_page |
85 |
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1766162699764367360 |