Recovery of ammonia from municipal wastewater through ion exchange
The recovery of ammonia in wastewater treatment is important to ensure that the effluent discharge does not contribute detrimental effects to water bodies. Treatment methods such as ion exchange which is presently used in water softening can be effective in the removal of ammonia. Resins can vary fr...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2022
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| Online Access: | https://hdl.handle.net/10356/163800 |
| _version_ | 1824453504003997696 |
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| author | Aqilah Hani Binte Alfian |
| author2 | Liu Yu |
| author_facet | Liu Yu Aqilah Hani Binte Alfian |
| author_sort | Aqilah Hani Binte Alfian |
| collection | NTU |
| description | The recovery of ammonia in wastewater treatment is important to ensure that the effluent discharge does not contribute detrimental effects to water bodies. Treatment methods such as ion exchange which is presently used in water softening can be effective in the removal of ammonia. Resins can vary from synthetic or natural zeolite to activated carbon such as biochar. In this study, the adsorption efficiency of chemically modified biochar in removing ammonia was investigated through batch kinetics and fixed-bed column adsorption tests. The optimum conditions were found to be pH 7.1 to 7.9 and a dosage 4 g/L. From the batch adsorption test, the pseudo second-order reaction corresponds the best with the equilibrium adsorption behavior of modified biochar, achieving qe of 3.83 mg/g. A range of contact time was investigated for the column adsorption test including 20, 25, 30 and 35 minutes in a lab-scale column. The column performed the best at EBCT of 35 min achieving a removal capacity of 3.26 mg/g. Further efforts should be carried out to investigate the use of modified biochar in industrial or trade wastewater effluent for other target pollutants. Additionally, the chemical modification of biochar using other acid and alkali solutions could be investigated as well. |
| first_indexed | 2025-02-19T03:07:28Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/163800 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:07:28Z |
| publishDate | 2022 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1638002022-12-19T01:04:11Z Recovery of ammonia from municipal wastewater through ion exchange Aqilah Hani Binte Alfian Liu Yu School of Civil and Environmental Engineering CYLiu@ntu.edu.sg Engineering::Environmental engineering::Water treatment The recovery of ammonia in wastewater treatment is important to ensure that the effluent discharge does not contribute detrimental effects to water bodies. Treatment methods such as ion exchange which is presently used in water softening can be effective in the removal of ammonia. Resins can vary from synthetic or natural zeolite to activated carbon such as biochar. In this study, the adsorption efficiency of chemically modified biochar in removing ammonia was investigated through batch kinetics and fixed-bed column adsorption tests. The optimum conditions were found to be pH 7.1 to 7.9 and a dosage 4 g/L. From the batch adsorption test, the pseudo second-order reaction corresponds the best with the equilibrium adsorption behavior of modified biochar, achieving qe of 3.83 mg/g. A range of contact time was investigated for the column adsorption test including 20, 25, 30 and 35 minutes in a lab-scale column. The column performed the best at EBCT of 35 min achieving a removal capacity of 3.26 mg/g. Further efforts should be carried out to investigate the use of modified biochar in industrial or trade wastewater effluent for other target pollutants. Additionally, the chemical modification of biochar using other acid and alkali solutions could be investigated as well. Bachelor of Engineering (Environmental Engineering) 2022-12-19T01:04:11Z 2022-12-19T01:04:11Z 2023 Final Year Project (FYP) Aqilah Hani Binte Alfian (2023). Recovery of ammonia from municipal wastewater through ion exchange. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/163800 https://hdl.handle.net/10356/163800 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Environmental engineering::Water treatment Aqilah Hani Binte Alfian Recovery of ammonia from municipal wastewater through ion exchange |
| title | Recovery of ammonia from municipal wastewater through ion exchange |
| title_full | Recovery of ammonia from municipal wastewater through ion exchange |
| title_fullStr | Recovery of ammonia from municipal wastewater through ion exchange |
| title_full_unstemmed | Recovery of ammonia from municipal wastewater through ion exchange |
| title_short | Recovery of ammonia from municipal wastewater through ion exchange |
| title_sort | recovery of ammonia from municipal wastewater through ion exchange |
| topic | Engineering::Environmental engineering::Water treatment |
| url | https://hdl.handle.net/10356/163800 |
| work_keys_str_mv | AT aqilahhanibintealfian recoveryofammoniafrommunicipalwastewaterthroughionexchange |