Resource recovery from anaerobically digested liquor of wastewater screenings
Phosphorus is a limited resource which is predicted to be exhausted at some point during the 21st century. However, it is present in wastewaters at concentrations that come close to supplying the nation’s annual requirements for fertiliser. Therefore, this study was conducted to study the potential...
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| Format: | Article |
| Language: | English English |
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Universiti Malaysia Sabah
2014
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| Online Access: | https://eprints.ums.edu.my/id/eprint/32777/1/Growth%20and%20morphological%20characterisation%20of%20tropical%20thermophilic%20bacterium%20parageobacillus%20caldoxylosilyticus%20er4b.ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/32777/2/Growth%20and%20Morphological%20Characterisation%20of%20Tropical%20Thermophilic%20Bacterium%20Parageobacillus%20caldoxylosilyticus%20ER4B.pdf |
| _version_ | 1796911280400891904 |
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| author | Newati Wid Nigel Horan |
| author_facet | Newati Wid Nigel Horan |
| author_sort | Newati Wid |
| collection | UMS |
| description | Phosphorus is a limited resource which is predicted to be exhausted at some point during the 21st century. However, it is present in wastewaters at concentrations that come close to supplying the nation’s annual requirements for fertiliser. Therefore, this study was conducted to study the potential of wastewater screenings which has received little attention that produced during wastewater treatment, for phosphorus recovery. Many papers have addressed the recovery of phosphate or ammonia as struvite from different type of waste. The most prominent usage of struvite (magnesium ammonium phosphate hexahydrate) is as a slow-release fertiliser, suitable as replacement for chemical fertiliser, for agricultural application. In this study, digested liquor was obtained from anaerobically digested of wastewater screening. The experiments were carried out with and without chemical amendment to study the feasibility of phosphorus recovery, at different Mg:P molar ratio, i.e. 1.56:1 (without chemical amendment), 2:1 and 3:1 (with chemical amendments). Precipitation at 1.56:1 showed that phosphorus removal efficiency was 68% and recovered 0.52g amorphous calcium carbonate. Precipitation at 2:1 reduced phosphorus removal efficiency to 53% and the recovered solid was found to be calcium phosphate, with 0.33g precipitate. Precipitation at 3:1 was not economically interesting for P recovery as shown by its lowest removal efficiency and highest chemical usage. The results demonstrated that the presence of calcium and carbonate ion in the digested liquor highly interfere with phosphorus recovery in the form of struvite. |
| first_indexed | 2024-03-06T03:16:31Z |
| format | Article |
| id | ums.eprints-32777 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T03:16:31Z |
| publishDate | 2014 |
| publisher | Universiti Malaysia Sabah |
| record_format | dspace |
| spelling | ums.eprints-327772022-06-15T02:42:28Z https://eprints.ums.edu.my/id/eprint/32777/ Resource recovery from anaerobically digested liquor of wastewater screenings Newati Wid Nigel Horan TD201-500 Water supply for domestic and industrial purposes Phosphorus is a limited resource which is predicted to be exhausted at some point during the 21st century. However, it is present in wastewaters at concentrations that come close to supplying the nation’s annual requirements for fertiliser. Therefore, this study was conducted to study the potential of wastewater screenings which has received little attention that produced during wastewater treatment, for phosphorus recovery. Many papers have addressed the recovery of phosphate or ammonia as struvite from different type of waste. The most prominent usage of struvite (magnesium ammonium phosphate hexahydrate) is as a slow-release fertiliser, suitable as replacement for chemical fertiliser, for agricultural application. In this study, digested liquor was obtained from anaerobically digested of wastewater screening. The experiments were carried out with and without chemical amendment to study the feasibility of phosphorus recovery, at different Mg:P molar ratio, i.e. 1.56:1 (without chemical amendment), 2:1 and 3:1 (with chemical amendments). Precipitation at 1.56:1 showed that phosphorus removal efficiency was 68% and recovered 0.52g amorphous calcium carbonate. Precipitation at 2:1 reduced phosphorus removal efficiency to 53% and the recovered solid was found to be calcium phosphate, with 0.33g precipitate. Precipitation at 3:1 was not economically interesting for P recovery as shown by its lowest removal efficiency and highest chemical usage. The results demonstrated that the presence of calcium and carbonate ion in the digested liquor highly interfere with phosphorus recovery in the form of struvite. Universiti Malaysia Sabah 2014-03 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/32777/1/Growth%20and%20morphological%20characterisation%20of%20tropical%20thermophilic%20bacterium%20parageobacillus%20caldoxylosilyticus%20er4b.ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/32777/2/Growth%20and%20Morphological%20Characterisation%20of%20Tropical%20Thermophilic%20Bacterium%20Parageobacillus%20caldoxylosilyticus%20ER4B.pdf Newati Wid and Nigel Horan (2014) Resource recovery from anaerobically digested liquor of wastewater screenings. Borneo Science, 34. pp. 52-59. ISSN 1394-4339 http://borneoscience.ums.edu.my/wp-content/uploads/2014/03/8_RESOURCE-RECOVERY-FROM-ANAEROBICALLY-DIGESTED-LIQUOR-OF-WASTEWATER-SCREENINGS.pdf |
| spellingShingle | TD201-500 Water supply for domestic and industrial purposes Newati Wid Nigel Horan Resource recovery from anaerobically digested liquor of wastewater screenings |
| title | Resource recovery from anaerobically digested liquor of wastewater screenings |
| title_full | Resource recovery from anaerobically digested liquor of wastewater screenings |
| title_fullStr | Resource recovery from anaerobically digested liquor of wastewater screenings |
| title_full_unstemmed | Resource recovery from anaerobically digested liquor of wastewater screenings |
| title_short | Resource recovery from anaerobically digested liquor of wastewater screenings |
| title_sort | resource recovery from anaerobically digested liquor of wastewater screenings |
| topic | TD201-500 Water supply for domestic and industrial purposes |
| url | https://eprints.ums.edu.my/id/eprint/32777/1/Growth%20and%20morphological%20characterisation%20of%20tropical%20thermophilic%20bacterium%20parageobacillus%20caldoxylosilyticus%20er4b.ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/32777/2/Growth%20and%20Morphological%20Characterisation%20of%20Tropical%20Thermophilic%20Bacterium%20Parageobacillus%20caldoxylosilyticus%20ER4B.pdf |
| work_keys_str_mv | AT newatiwid resourcerecoveryfromanaerobicallydigestedliquorofwastewaterscreenings AT nigelhoran resourcerecoveryfromanaerobicallydigestedliquorofwastewaterscreenings |