Controlling biofilm retention time in an A-stage high-rate moving bed biofilm reactor for organic carbon redirection
Copyright © 2020 Elsevier B.V. All rights reserved..
The A-stage of the AB process can minimize carbon oxidation by redirecting carbon to side-stream processes for harvesting carbon as energy and/or bioproduct. The redirection/harvesting of carbon has been studied in systems which utilize suspended biomass cultures. The potential of high-rate moving bed biofilm reactors, however, has not been explored. This study sought to control the biofilm solids retention time in a high-rate moving bed biofilm reactor operated at 17 ± 4 g-bCOD m-2d-1. Biofilm solids retention time was controlled by one of two strategies (i.e., 100% and 60% effective biofilm removal) that targeted several nominal biofilm solids retention times (i.e., 8, 6, 4, and 2 days) by employing different biocarrier replacement times. The results demonstrated that the suspended solids activity could be reduced by decreasing the nominal biofilm solids retention time. Using the 60% biofilm removal strategy, the actual biofilm solids retention time with a nominal biofilm solids retention time of 2 days was 12 h. When utilizing the 100% biofilm removal strategy, an actual biofilm solids retention time of less than 3 h was achieved with a nominal biofilm solids retention time of 2 days. The control reactor, which was a conventional moving bed biofilm reactor with no biocarrier replacement, was estimated to have a biofilm solids retention time of 2 days. Overall, the biofilm removal strategies favored carbon redirection and maximized the biomass yield at 1.1 ± 0.3 g-TSS g-COD-1 removed.
Medienart: |
E-Artikel |
---|
Erscheinungsjahr: |
2020 |
---|---|
Erschienen: |
2020 |
Enthalten in: |
Zur Gesamtaufnahme - volume:745 |
---|---|
Enthalten in: |
The Science of the total environment - 745(2020) vom: 25. Nov., Seite 141051 |
Sprache: |
Englisch |
---|
Beteiligte Personen: |
di Biase, Alessandro [VerfasserIn] |
---|
Links: |
---|
Themen: |
7440-44-0 |
---|
Anmerkungen: |
Date Completed 07.10.2020 Date Revised 07.10.2020 published: Print-Electronic Citation Status MEDLINE |
---|
doi: |
10.1016/j.scitotenv.2020.141051 |
---|
funding: |
|
---|---|
Förderinstitution / Projekttitel: |
|
PPN (Katalog-ID): |
NLM312884400 |
---|
LEADER | 01000naa a22002652 4500 | ||
---|---|---|---|
001 | NLM312884400 | ||
003 | DE-627 | ||
005 | 20231225145354.0 | ||
007 | cr uuu---uuuuu | ||
008 | 231225s2020 xx |||||o 00| ||eng c | ||
024 | 7 | |a 10.1016/j.scitotenv.2020.141051 |2 doi | |
028 | 5 | 2 | |a pubmed24n1042.xml |
035 | |a (DE-627)NLM312884400 | ||
035 | |a (NLM)32712501 | ||
035 | |a (PII)S0048-9697(20)34580-0 | ||
040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
041 | |a eng | ||
100 | 1 | |a di Biase, Alessandro |e verfasserin |4 aut | |
245 | 1 | 0 | |a Controlling biofilm retention time in an A-stage high-rate moving bed biofilm reactor for organic carbon redirection |
264 | 1 | |c 2020 | |
336 | |a Text |b txt |2 rdacontent | ||
337 | |a ƒaComputermedien |b c |2 rdamedia | ||
338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
500 | |a Date Completed 07.10.2020 | ||
500 | |a Date Revised 07.10.2020 | ||
500 | |a published: Print-Electronic | ||
500 | |a Citation Status MEDLINE | ||
520 | |a Copyright © 2020 Elsevier B.V. All rights reserved. | ||
520 | |a The A-stage of the AB process can minimize carbon oxidation by redirecting carbon to side-stream processes for harvesting carbon as energy and/or bioproduct. The redirection/harvesting of carbon has been studied in systems which utilize suspended biomass cultures. The potential of high-rate moving bed biofilm reactors, however, has not been explored. This study sought to control the biofilm solids retention time in a high-rate moving bed biofilm reactor operated at 17 ± 4 g-bCOD m-2d-1. Biofilm solids retention time was controlled by one of two strategies (i.e., 100% and 60% effective biofilm removal) that targeted several nominal biofilm solids retention times (i.e., 8, 6, 4, and 2 days) by employing different biocarrier replacement times. The results demonstrated that the suspended solids activity could be reduced by decreasing the nominal biofilm solids retention time. Using the 60% biofilm removal strategy, the actual biofilm solids retention time with a nominal biofilm solids retention time of 2 days was 12 h. When utilizing the 100% biofilm removal strategy, an actual biofilm solids retention time of less than 3 h was achieved with a nominal biofilm solids retention time of 2 days. The control reactor, which was a conventional moving bed biofilm reactor with no biocarrier replacement, was estimated to have a biofilm solids retention time of 2 days. Overall, the biofilm removal strategies favored carbon redirection and maximized the biomass yield at 1.1 ± 0.3 g-TSS g-COD-1 removed | ||
650 | 4 | |a Journal Article | |
650 | 4 | |a Biofilm solids retention time control | |
650 | 4 | |a Carbon redirection | |
650 | 4 | |a High-rate moving bed biofilm reactor | |
650 | 4 | |a Observed yield | |
650 | 7 | |a Carbon |2 NLM | |
650 | 7 | |a 7440-44-0 |2 NLM | |
700 | 1 | |a Kowalski, Maciej S |e verfasserin |4 aut | |
700 | 1 | |a Devlin, Tanner R |e verfasserin |4 aut | |
700 | 1 | |a Oleszkiewicz, Jan A |e verfasserin |4 aut | |
773 | 0 | 8 | |i Enthalten in |t The Science of the total environment |d 1972 |g 745(2020) vom: 25. Nov., Seite 141051 |w (DE-627)NLM000215562 |x 1879-1026 |7 nnns |
773 | 1 | 8 | |g volume:745 |g year:2020 |g day:25 |g month:11 |g pages:141051 |
856 | 4 | 0 | |u http://dx.doi.org/10.1016/j.scitotenv.2020.141051 |3 Volltext |
912 | |a GBV_USEFLAG_A | ||
912 | |a GBV_NLM | ||
951 | |a AR | ||
952 | |d 745 |j 2020 |b 25 |c 11 |h 141051 |