Free nitrous acid inhibition on carbon storage microorganisms: Accumulated inhibitory effects and recoverability
Recent research has shed light on utilization of carbon storage microorganisms in the A-stage of AB process for higher methane generation and resource recovery potential. Typically, organic matters are entrapped into biomass in the A-stage and subsequently channeled to the anaerobic digester for ene...
| Main Authors: | , , , , |
|---|---|
| 其他作者: | |
| 格式: | Journal Article |
| 語言: | English |
| 出版: |
2016
|
| 主題: | |
| 在線閱讀: | https://hdl.handle.net/10356/82787 http://hdl.handle.net/10220/40286 |
| _version_ | 1826115432867692544 |
|---|---|
| author | Ganda, Lily Zhou, Yan Lim, Choon-Ping Liu, Yu Ng, Wun Jern |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Ganda, Lily Zhou, Yan Lim, Choon-Ping Liu, Yu Ng, Wun Jern |
| author_sort | Ganda, Lily |
| collection | NTU |
| description | Recent research has shed light on utilization of carbon storage microorganisms in the A-stage of AB process for higher methane generation and resource recovery potential. Typically, organic matters are entrapped into biomass in the A-stage and subsequently channeled to the anaerobic digester for energy/resource recovery. In the following B-stage, nitrite shortcut strategy is often implemented to achieve low energy nitrogen removal. In this study, an enriched glycogen accumulating organism (GAO) culture was deployed as the A-stage carbon storage microorganisms to enhance the removal of soluble COD. This study aimed (1) to address the challenge arising from incidental nitrite leakage into the A-stage tank, leading to free nitrous acid (FNA) inhibition; and (2) to evaluate the continued (henceforth referred to as ‘accumulated’) inhibitory effects on GAOs’ carbon metabolisms under the subsequent FNA-free condition. Upon FNA exposure, dynamics in carbon storage mechanisms were obtained and could be linked to higher cellular energy expenditure for detoxification activity. The inhibition on carbon transformation, however, was found to be reversible, suggesting the robustness of GAO towards FNA inhibition and its potential application in the nitrite-shortcut AB process. |
| first_indexed | 2024-10-01T03:55:23Z |
| format | Journal Article |
| id | ntu-10356/82787 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:55:23Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/827872020-09-26T21:58:55Z Free nitrous acid inhibition on carbon storage microorganisms: Accumulated inhibitory effects and recoverability Ganda, Lily Zhou, Yan Lim, Choon-Ping Liu, Yu Ng, Wun Jern School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute AB process Carbon storage Free nitrous acid Glycogen accumulating organism Nitrite shortcut Recent research has shed light on utilization of carbon storage microorganisms in the A-stage of AB process for higher methane generation and resource recovery potential. Typically, organic matters are entrapped into biomass in the A-stage and subsequently channeled to the anaerobic digester for energy/resource recovery. In the following B-stage, nitrite shortcut strategy is often implemented to achieve low energy nitrogen removal. In this study, an enriched glycogen accumulating organism (GAO) culture was deployed as the A-stage carbon storage microorganisms to enhance the removal of soluble COD. This study aimed (1) to address the challenge arising from incidental nitrite leakage into the A-stage tank, leading to free nitrous acid (FNA) inhibition; and (2) to evaluate the continued (henceforth referred to as ‘accumulated’) inhibitory effects on GAOs’ carbon metabolisms under the subsequent FNA-free condition. Upon FNA exposure, dynamics in carbon storage mechanisms were obtained and could be linked to higher cellular energy expenditure for detoxification activity. The inhibition on carbon transformation, however, was found to be reversible, suggesting the robustness of GAO towards FNA inhibition and its potential application in the nitrite-shortcut AB process. NRF (Natl Research Foundation, S’pore) Accepted version 2016-03-15T07:35:33Z 2019-12-06T15:05:33Z 2016-03-15T07:35:33Z 2019-12-06T15:05:33Z 2015 Journal Article Ganda, L., Zhou, Y., Lim, C.-P., Liu, Y., & Ng, W. J. (2016). Free nitrous acid inhibition on carbon storage microorganisms: Accumulated inhibitory effects and recoverability. Chemical Engineering Journal, 287, 285-291. 1385-8947 https://hdl.handle.net/10356/82787 http://hdl.handle.net/10220/40286 10.1016/j.cej.2015.11.027 en Chemical Engineering Journal © 2015 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Chemical Engineering Journal, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.cej.2015.11.027]. 28 p. application/pdf |
| spellingShingle | AB process Carbon storage Free nitrous acid Glycogen accumulating organism Nitrite shortcut Ganda, Lily Zhou, Yan Lim, Choon-Ping Liu, Yu Ng, Wun Jern Free nitrous acid inhibition on carbon storage microorganisms: Accumulated inhibitory effects and recoverability |
| title | Free nitrous acid inhibition on carbon storage microorganisms: Accumulated inhibitory effects and recoverability |
| title_full | Free nitrous acid inhibition on carbon storage microorganisms: Accumulated inhibitory effects and recoverability |
| title_fullStr | Free nitrous acid inhibition on carbon storage microorganisms: Accumulated inhibitory effects and recoverability |
| title_full_unstemmed | Free nitrous acid inhibition on carbon storage microorganisms: Accumulated inhibitory effects and recoverability |
| title_short | Free nitrous acid inhibition on carbon storage microorganisms: Accumulated inhibitory effects and recoverability |
| title_sort | free nitrous acid inhibition on carbon storage microorganisms accumulated inhibitory effects and recoverability |
| topic | AB process Carbon storage Free nitrous acid Glycogen accumulating organism Nitrite shortcut |
| url | https://hdl.handle.net/10356/82787 http://hdl.handle.net/10220/40286 |
| work_keys_str_mv | AT gandalily freenitrousacidinhibitiononcarbonstoragemicroorganismsaccumulatedinhibitoryeffectsandrecoverability AT zhouyan freenitrousacidinhibitiononcarbonstoragemicroorganismsaccumulatedinhibitoryeffectsandrecoverability AT limchoonping freenitrousacidinhibitiononcarbonstoragemicroorganismsaccumulatedinhibitoryeffectsandrecoverability AT liuyu freenitrousacidinhibitiononcarbonstoragemicroorganismsaccumulatedinhibitoryeffectsandrecoverability AT ngwunjern freenitrousacidinhibitiononcarbonstoragemicroorganismsaccumulatedinhibitoryeffectsandrecoverability |