Cargando…
Emerging Strategies for Enhancing Propionate Conversion in Anaerobic Digestion: A Review
Anaerobic digestion (AD) is a triple-benefit biotechnology for organic waste treatment, renewable production, and carbon emission reduction. In the process of anaerobic digestion, pH, temperature, organic load, ammonia nitrogen, VFAs, and other factors affect fermentation efficiency and stability. T...
Autores principales: | , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180298/ https://www.ncbi.nlm.nih.gov/pubmed/37175291 http://dx.doi.org/10.3390/molecules28093883 |
_version_ | 1785041303412670464 |
---|---|
author | Mu, Lan Wang, Yifan Xu, Fenglian Li, Jinhe Tao, Junyu Sun, Yunan Song, Yingjin Duan, Zhaodan Li, Siyi Chen, Guanyi |
author_facet | Mu, Lan Wang, Yifan Xu, Fenglian Li, Jinhe Tao, Junyu Sun, Yunan Song, Yingjin Duan, Zhaodan Li, Siyi Chen, Guanyi |
author_sort | Mu, Lan |
collection | PubMed |
description | Anaerobic digestion (AD) is a triple-benefit biotechnology for organic waste treatment, renewable production, and carbon emission reduction. In the process of anaerobic digestion, pH, temperature, organic load, ammonia nitrogen, VFAs, and other factors affect fermentation efficiency and stability. The balance between the generation and consumption of volatile fatty acids (VFAs) in the anaerobic digestion process is the key to stable AD operation. However, the accumulation of VFAs frequently occurs, especially propionate, because its oxidation has the highest Gibbs free energy when compared to other VFAs. In order to solve this problem, some strategies, including buffering addition, suspension of feeding, decreased organic loading rate, and so on, have been proposed. Emerging methods, such as bioaugmentation, supplementary trace elements, the addition of electronic receptors, conductive materials, and the degasification of dissolved hydrogen, have been recently researched, presenting promising results. But the efficacy of these methods still requires further studies and tests regarding full-scale application. The main objective of this paper is to provide a comprehensive review of the mechanisms of propionate generation, the metabolic pathways and the influencing factors during the AD process, and the recent literature regarding the experimental research related to the efficacy of various strategies for enhancing propionate biodegradation. In addition, the issues that must be addressed in the future and the focus of future research are identified, and the potential directions for future development are predicted. |
format | Online Article Text |
id | pubmed-10180298 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-101802982023-05-13 Emerging Strategies for Enhancing Propionate Conversion in Anaerobic Digestion: A Review Mu, Lan Wang, Yifan Xu, Fenglian Li, Jinhe Tao, Junyu Sun, Yunan Song, Yingjin Duan, Zhaodan Li, Siyi Chen, Guanyi Molecules Review Anaerobic digestion (AD) is a triple-benefit biotechnology for organic waste treatment, renewable production, and carbon emission reduction. In the process of anaerobic digestion, pH, temperature, organic load, ammonia nitrogen, VFAs, and other factors affect fermentation efficiency and stability. The balance between the generation and consumption of volatile fatty acids (VFAs) in the anaerobic digestion process is the key to stable AD operation. However, the accumulation of VFAs frequently occurs, especially propionate, because its oxidation has the highest Gibbs free energy when compared to other VFAs. In order to solve this problem, some strategies, including buffering addition, suspension of feeding, decreased organic loading rate, and so on, have been proposed. Emerging methods, such as bioaugmentation, supplementary trace elements, the addition of electronic receptors, conductive materials, and the degasification of dissolved hydrogen, have been recently researched, presenting promising results. But the efficacy of these methods still requires further studies and tests regarding full-scale application. The main objective of this paper is to provide a comprehensive review of the mechanisms of propionate generation, the metabolic pathways and the influencing factors during the AD process, and the recent literature regarding the experimental research related to the efficacy of various strategies for enhancing propionate biodegradation. In addition, the issues that must be addressed in the future and the focus of future research are identified, and the potential directions for future development are predicted. MDPI 2023-05-04 /pmc/articles/PMC10180298/ /pubmed/37175291 http://dx.doi.org/10.3390/molecules28093883 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Review Mu, Lan Wang, Yifan Xu, Fenglian Li, Jinhe Tao, Junyu Sun, Yunan Song, Yingjin Duan, Zhaodan Li, Siyi Chen, Guanyi Emerging Strategies for Enhancing Propionate Conversion in Anaerobic Digestion: A Review |
title | Emerging Strategies for Enhancing Propionate Conversion in Anaerobic Digestion: A Review |
title_full | Emerging Strategies for Enhancing Propionate Conversion in Anaerobic Digestion: A Review |
title_fullStr | Emerging Strategies for Enhancing Propionate Conversion in Anaerobic Digestion: A Review |
title_full_unstemmed | Emerging Strategies for Enhancing Propionate Conversion in Anaerobic Digestion: A Review |
title_short | Emerging Strategies for Enhancing Propionate Conversion in Anaerobic Digestion: A Review |
title_sort | emerging strategies for enhancing propionate conversion in anaerobic digestion: a review |
topic | Review |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180298/ https://www.ncbi.nlm.nih.gov/pubmed/37175291 http://dx.doi.org/10.3390/molecules28093883 |
work_keys_str_mv | AT mulan emergingstrategiesforenhancingpropionateconversioninanaerobicdigestionareview AT wangyifan emergingstrategiesforenhancingpropionateconversioninanaerobicdigestionareview AT xufenglian emergingstrategiesforenhancingpropionateconversioninanaerobicdigestionareview AT lijinhe emergingstrategiesforenhancingpropionateconversioninanaerobicdigestionareview AT taojunyu emergingstrategiesforenhancingpropionateconversioninanaerobicdigestionareview AT sunyunan emergingstrategiesforenhancingpropionateconversioninanaerobicdigestionareview AT songyingjin emergingstrategiesforenhancingpropionateconversioninanaerobicdigestionareview AT duanzhaodan emergingstrategiesforenhancingpropionateconversioninanaerobicdigestionareview AT lisiyi emergingstrategiesforenhancingpropionateconversioninanaerobicdigestionareview AT chenguanyi emergingstrategiesforenhancingpropionateconversioninanaerobicdigestionareview |