Nitrification of ammonium-rich sanitary landfill leachate
The nitrification of ammonium-rich wastewater is considered challenging due to the substrate inhibition particularly in the form of free ammonia (FA) and free nitrous acid (FNA) in ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB). The feasibility of the nitrifying activated slud...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English English |
| Published: |
Science Direct
2010
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/12379/ http://psasir.upm.edu.my/id/eprint/12379/1/Nitrification%20of%20ammonium-rich%20sanitary%20landfill%20leachate.pdf |
| _version_ | 1848841828743249920 |
|---|---|
| author | Yusof, Norjan Hassan, Mohd Ali Phang, Lai Yee Tabatabaei, Meisam Othman, Mohd Ridzuan Mori, Masatsugu Wakisaka, Minato Kenji, Sakai Yoshihito, Shirai |
| author_facet | Yusof, Norjan Hassan, Mohd Ali Phang, Lai Yee Tabatabaei, Meisam Othman, Mohd Ridzuan Mori, Masatsugu Wakisaka, Minato Kenji, Sakai Yoshihito, Shirai |
| author_sort | Yusof, Norjan |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The nitrification of ammonium-rich wastewater is considered challenging due to the substrate inhibition particularly in the form of free ammonia (FA) and free nitrous acid (FNA) in ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB). The feasibility of the nitrifying activated sludge system to completely nitrify synthetic stabilized landfill leachate with concentration of 1452 mg/L was tested in this study. The process started with 0.4 kg /m3/day of nitrogen loading rate (NLR) in a fed-batch mode to avoid any accumulation of the FA and FNA in the system followed by increasing the nitrogen loading rate (NLR) gradually. Complete nitrification was achieved with a very high ammonium removal percentage (100%). The maximum specific and volumetric nitrification rate obtained were 0.49 g /g VSS/day and 3.0 kg /m3/day, respectively which were higher than those reported previously for ammonium-rich removal using activated sludge system. The nitrifying sludge exhibited good settling characteristics of up to 36 mL/g VSS and a long SRT of more than 53 days which contributed to the success of the nitrification process. The coexistence and syntrophic association of the AOB and NOB was observed by using Fluorescence in situ hybridization (FISH) technique which supported the results on complete nitrification obtained in the system. These findings would be of prominent importance for further treatment of actual sanitary landfill leachate.
|
| first_indexed | 2025-11-15T07:49:27Z |
| format | Article |
| id | upm-12379 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:49:27Z |
| publishDate | 2010 |
| publisher | Science Direct |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-123792015-11-02T08:11:43Z http://psasir.upm.edu.my/id/eprint/12379/ Nitrification of ammonium-rich sanitary landfill leachate Yusof, Norjan Hassan, Mohd Ali Phang, Lai Yee Tabatabaei, Meisam Othman, Mohd Ridzuan Mori, Masatsugu Wakisaka, Minato Kenji, Sakai Yoshihito, Shirai The nitrification of ammonium-rich wastewater is considered challenging due to the substrate inhibition particularly in the form of free ammonia (FA) and free nitrous acid (FNA) in ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB). The feasibility of the nitrifying activated sludge system to completely nitrify synthetic stabilized landfill leachate with concentration of 1452 mg/L was tested in this study. The process started with 0.4 kg /m3/day of nitrogen loading rate (NLR) in a fed-batch mode to avoid any accumulation of the FA and FNA in the system followed by increasing the nitrogen loading rate (NLR) gradually. Complete nitrification was achieved with a very high ammonium removal percentage (100%). The maximum specific and volumetric nitrification rate obtained were 0.49 g /g VSS/day and 3.0 kg /m3/day, respectively which were higher than those reported previously for ammonium-rich removal using activated sludge system. The nitrifying sludge exhibited good settling characteristics of up to 36 mL/g VSS and a long SRT of more than 53 days which contributed to the success of the nitrification process. The coexistence and syntrophic association of the AOB and NOB was observed by using Fluorescence in situ hybridization (FISH) technique which supported the results on complete nitrification obtained in the system. These findings would be of prominent importance for further treatment of actual sanitary landfill leachate. Science Direct 2010-01 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/12379/1/Nitrification%20of%20ammonium-rich%20sanitary%20landfill%20leachate.pdf Yusof, Norjan and Hassan, Mohd Ali and Phang, Lai Yee and Tabatabaei, Meisam and Othman, Mohd Ridzuan and Mori, Masatsugu and Wakisaka, Minato and Kenji, Sakai and Yoshihito, Shirai (2010) Nitrification of ammonium-rich sanitary landfill leachate. Waste Management, 30 (1). pp. 100-109. ISSN 0956-053X http://dx.doi.org/10.1016/j.wasman.2009.08.018 English |
| spellingShingle | Yusof, Norjan Hassan, Mohd Ali Phang, Lai Yee Tabatabaei, Meisam Othman, Mohd Ridzuan Mori, Masatsugu Wakisaka, Minato Kenji, Sakai Yoshihito, Shirai Nitrification of ammonium-rich sanitary landfill leachate |
| title | Nitrification of ammonium-rich sanitary landfill leachate |
| title_full | Nitrification of ammonium-rich sanitary landfill leachate |
| title_fullStr | Nitrification of ammonium-rich sanitary landfill leachate |
| title_full_unstemmed | Nitrification of ammonium-rich sanitary landfill leachate |
| title_short | Nitrification of ammonium-rich sanitary landfill leachate |
| title_sort | nitrification of ammonium-rich sanitary landfill leachate |
| url | http://psasir.upm.edu.my/id/eprint/12379/ http://psasir.upm.edu.my/id/eprint/12379/ http://psasir.upm.edu.my/id/eprint/12379/1/Nitrification%20of%20ammonium-rich%20sanitary%20landfill%20leachate.pdf |