Thermophilic aerobic digestion using aquaculture sludge from rainbow trout aquaculture facilities: effect of salinity
The objectives of this study were to evaluate the potential of using thermophilic aerobic digestion (TAD) to hydrolyze aquaculture sludge, and to investigate the hydrolysis efficiency and changes in microbial community structure during TAD at 0, 15, and 30 practical salinity units (psu). As digestio...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2024-11-01
|
| Series: | Frontiers in Microbiology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2024.1488041/full |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850199986911838208 |
|---|---|
| author | Jihyun Chun Su Min Kim Gwangil Ko Hyo Jeong Shin Minjae Kim Hyun Uk Cho |
| author_facet | Jihyun Chun Su Min Kim Gwangil Ko Hyo Jeong Shin Minjae Kim Hyun Uk Cho |
| author_sort | Jihyun Chun |
| collection | DOAJ |
| description | The objectives of this study were to evaluate the potential of using thermophilic aerobic digestion (TAD) to hydrolyze aquaculture sludge, and to investigate the hydrolysis efficiency and changes in microbial community structure during TAD at 0, 15, and 30 practical salinity units (psu). As digestion progressed, soluble organic matter concentrations in all reactors increased to their maximum values at 6 h. The hydrolysis efficiency at 6 h decreased as salinity increased: 2.42% at 0 psu, 1.78% at 15 psu, and 1.04% at 30 psu. The microbial community compositions at the genus level prominently differed in the relative abundances of dominant bacteria between 0 psu and 30 psu. The relative abundance of genera Iodidimonas and Tepidiphilus increased significantly as salinity increased. Increase in the salinity at which thermophilic aerobic digestion of aquaculture sludge was conducted altered the microbial community structure, which in turn decreased the efficiency of organic matter hydrolysis. |
| format | Article |
| id | doaj-art-83ff0067a3e04a2ebdc0b8f7f847c8bf |
| institution | OA Journals |
| issn | 1664-302X |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj-art-83ff0067a3e04a2ebdc0b8f7f847c8bf2025-08-20T02:12:29ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2024-11-011510.3389/fmicb.2024.14880411488041Thermophilic aerobic digestion using aquaculture sludge from rainbow trout aquaculture facilities: effect of salinityJihyun Chun0Su Min Kim1Gwangil Ko2Hyo Jeong Shin3Minjae Kim4Hyun Uk Cho5Department of Marine Environmental Engineering, Gyeongsang National University, Tongyeong, Gyeongnam, Republic of KoreaDepartment of Marine Environmental Engineering, Gyeongsang National University, Tongyeong, Gyeongnam, Republic of KoreaDepartment of Marine Environmental Engineering, Gyeongsang National University, Tongyeong, Gyeongnam, Republic of KoreaDepartment of Chemical Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk, Republic of KoreaCivil Engineering, University of Kentucky, Lexington, KY, United StatesDepartment of Marine Environmental Engineering, Gyeongsang National University, Tongyeong, Gyeongnam, Republic of KoreaThe objectives of this study were to evaluate the potential of using thermophilic aerobic digestion (TAD) to hydrolyze aquaculture sludge, and to investigate the hydrolysis efficiency and changes in microbial community structure during TAD at 0, 15, and 30 practical salinity units (psu). As digestion progressed, soluble organic matter concentrations in all reactors increased to their maximum values at 6 h. The hydrolysis efficiency at 6 h decreased as salinity increased: 2.42% at 0 psu, 1.78% at 15 psu, and 1.04% at 30 psu. The microbial community compositions at the genus level prominently differed in the relative abundances of dominant bacteria between 0 psu and 30 psu. The relative abundance of genera Iodidimonas and Tepidiphilus increased significantly as salinity increased. Increase in the salinity at which thermophilic aerobic digestion of aquaculture sludge was conducted altered the microbial community structure, which in turn decreased the efficiency of organic matter hydrolysis.https://www.frontiersin.org/articles/10.3389/fmicb.2024.1488041/fullaquaculture sludgethermophilic aerobic digestionmicrobial communitysalinitybiological pretreatment |
| spellingShingle | Jihyun Chun Su Min Kim Gwangil Ko Hyo Jeong Shin Minjae Kim Hyun Uk Cho Thermophilic aerobic digestion using aquaculture sludge from rainbow trout aquaculture facilities: effect of salinity Frontiers in Microbiology aquaculture sludge thermophilic aerobic digestion microbial community salinity biological pretreatment |
| title | Thermophilic aerobic digestion using aquaculture sludge from rainbow trout aquaculture facilities: effect of salinity |
| title_full | Thermophilic aerobic digestion using aquaculture sludge from rainbow trout aquaculture facilities: effect of salinity |
| title_fullStr | Thermophilic aerobic digestion using aquaculture sludge from rainbow trout aquaculture facilities: effect of salinity |
| title_full_unstemmed | Thermophilic aerobic digestion using aquaculture sludge from rainbow trout aquaculture facilities: effect of salinity |
| title_short | Thermophilic aerobic digestion using aquaculture sludge from rainbow trout aquaculture facilities: effect of salinity |
| title_sort | thermophilic aerobic digestion using aquaculture sludge from rainbow trout aquaculture facilities effect of salinity |
| topic | aquaculture sludge thermophilic aerobic digestion microbial community salinity biological pretreatment |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2024.1488041/full |
| work_keys_str_mv | AT jihyunchun thermophilicaerobicdigestionusingaquaculturesludgefromrainbowtroutaquaculturefacilitieseffectofsalinity AT suminkim thermophilicaerobicdigestionusingaquaculturesludgefromrainbowtroutaquaculturefacilitieseffectofsalinity AT gwangilko thermophilicaerobicdigestionusingaquaculturesludgefromrainbowtroutaquaculturefacilitieseffectofsalinity AT hyojeongshin thermophilicaerobicdigestionusingaquaculturesludgefromrainbowtroutaquaculturefacilitieseffectofsalinity AT minjaekim thermophilicaerobicdigestionusingaquaculturesludgefromrainbowtroutaquaculturefacilitieseffectofsalinity AT hyunukcho thermophilicaerobicdigestionusingaquaculturesludgefromrainbowtroutaquaculturefacilitieseffectofsalinity |