AI SearchApplication of anaerobic digestate-derived biochar in the semi-continuous anaerobic digestion of sewage sludge and food waste (Record no. 6469)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03965nas a2200397 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817162832.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 260616s20269999th u ms t 000 eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b12508366 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.EV-26-24 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Khan, Tasbiha |
| 245 10 - TITLE STATEMENT | |
| Title | Application of anaerobic digestate-derived biochar in the semi-continuous anaerobic digestion of sewage sludge and food waste |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani, Thailand : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2026 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 112 leaves : |
| Other physical details | ill.+ |
| Accompanying material | 1 online resource |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. EV-26-24 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Environmental Engineering and Management |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M. Eng.) - Asian Institute of Technology, 2026 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Digestate-derived biochar was used to examine the effectiveness of semi-continuous anaerobic co-digestion of food waste and sewage sludge under mesophilic conditions. Even though anaerobic digestion is a common method for producing biogas, instability brought on by acid buildup, ammonia inhibition, and varying organic loading rates (OLR) frequently limits its effectiveness. In order to overcome these obstacles, biochar made from anaerobic digestate was used to improve methane production and system stability. At 35 ± 1°C, two identical lab-scal Continuous Stirred Tank Reactors with working volumes of 6 and 8 L were used. Reactor R1 received biochar (0.8, 1, 2, and 5 g/L), and reactor R2 was used as a control. To evaluate performance under both stable and stressful situations, reactors were run with increasing OLR. TS, VS, pH, alkalinity, ammonia nitrogen, VFAs, biogas generation, and methane concentration were among the important variables that were tracked. SPSS was used for statistical analysis. Reactor stability and performance were greatly enhanced by the addition of biochar; R1 maintained a more constant pH (6.98{u2013}7.81) than R2 (6.71{u2013}7.35) and demonstrated less ammonia accumulation (95.19{u2013}203.03 vs. 129.28{u2013}319.46 mg NH₄-N/L). Lower FOS/TAC ratios (0.27{u2013}0.36) and lower VFA levels (476{u2013}792 mg/L) in R1 compared to R2 (up to 0.55 and 1148 mg/L) demonstrate improved process stability. Additionally, R1 produced more biogas, with methane content reaching around 53% compared to about 42% in R2, especially at ideal biochar dosages of 1-2 g/L. Better reactor performance was also demonstrated by improved substrate degradation (TS up to 3.92). Biochar's high surface area and porous structure, which encourage microbial activity and DIET, are responsible for these improvements; 500°C biochar exhibits the best overall performance. Overall, digestate-derived biochar is an effective additive for improving anaerobic co-digestion stability and methane production. Future research should focus on optimizing biochar dosage, long-term performance, and microbial mechanisms under varying operating conditions. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Biochar |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Sewage sludge |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Ghimire, Anish, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Cruz, Simon Guerrero, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Xue, Wenchao, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | PMU-KPCIP-AIT Scholarship, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. EV-26-24 |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B24468">http://203.159.5.9/ait-thesis/detail.php?q=B24468</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b12508366 |
| b | mnarc |
| c | a |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 260622 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 260619 |
| First date, FD (RLIN) | m |
| -- | h |
| -- | a |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 67-Electronic Resource |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : - |
| CREATED | CREATED : 2026-06-16 |
| RECORD Id | RECORD # : i13605616 |
| LPATRON | LPATRON : 0 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120420863 |
| CREATED | CREATED : 2026-06-17 |
| RECORD Id | RECORD # : i13606050 |
| LPATRON | LPATRON : 0 |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Date last seen | Copy number | Price effective from | Koha item type | Barcode |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no.EV-26-24 | 17/08/2026 | 1 | 17/08/2026 | 67-Electronic Resource | |||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no.EV-26-24 | 17/08/2026 | 1 | 17/08/2026 | 40-Archives | 30050120420863 |