Semi-batch reactive crystallisation of mono-ammonium phosphate: An experimental study
NH4H2PO4, mono-ammonium phosphate (MAP) and (NH4)2HPO4, di-ammonium phosphate (DAP) have become leading phosphate fertiliser products worldwide. Ammonium phosphates are produced by reactions of ammonia and phosphoric acid resulting in the formation of the mono-basic, di-basic, or tri-basic salts. In...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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Elsevier BV
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/42156 |
| _version_ | 1848756342288809984 |
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| author | Utomo, Johan Asakuma, Y Maynard, Nicoleta Maeda, K. Fukui, K. Tade, Moses |
| author_facet | Utomo, Johan Asakuma, Y Maynard, Nicoleta Maeda, K. Fukui, K. Tade, Moses |
| author_sort | Utomo, Johan |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | NH4H2PO4, mono-ammonium phosphate (MAP) and (NH4)2HPO4, di-ammonium phosphate (DAP) have become leading phosphate fertiliser products worldwide. Ammonium phosphates are produced by reactions of ammonia and phosphoric acid resulting in the formation of the mono-basic, di-basic, or tri-basic salts. Inefficiencies in the MAP/DAP production process are due to the lack of a fundamental understanding of the crystallisation–reaction mechanisms. A semi-batch reactive crystalliser equipped with a cooling jacket, a dual feed system and a turbine type agitator has been used in this study. Effects of N/P ratio, seed crystals, feeding system, feed flow rate, initial supersaturation, feeding time and mixing intensity to the real-time supersaturation, crystal yield, crystal shape (aspect ratio) and final crystal size distribution (CSD) were studied in order to understand the kinetics. This study aims to provide new insights into the MAP/DAP reaction–crystallisation mechanisms. |
| first_indexed | 2025-11-14T09:10:40Z |
| format | Journal Article |
| id | curtin-20.500.11937-42156 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:10:40Z |
| publishDate | 2010 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-421562017-09-13T14:22:50Z Semi-batch reactive crystallisation of mono-ammonium phosphate: An experimental study Utomo, Johan Asakuma, Y Maynard, Nicoleta Maeda, K. Fukui, K. Tade, Moses NH4H2PO4, mono-ammonium phosphate (MAP) and (NH4)2HPO4, di-ammonium phosphate (DAP) have become leading phosphate fertiliser products worldwide. Ammonium phosphates are produced by reactions of ammonia and phosphoric acid resulting in the formation of the mono-basic, di-basic, or tri-basic salts. Inefficiencies in the MAP/DAP production process are due to the lack of a fundamental understanding of the crystallisation–reaction mechanisms. A semi-batch reactive crystalliser equipped with a cooling jacket, a dual feed system and a turbine type agitator has been used in this study. Effects of N/P ratio, seed crystals, feeding system, feed flow rate, initial supersaturation, feeding time and mixing intensity to the real-time supersaturation, crystal yield, crystal shape (aspect ratio) and final crystal size distribution (CSD) were studied in order to understand the kinetics. This study aims to provide new insights into the MAP/DAP reaction–crystallisation mechanisms. 2010 Journal Article http://hdl.handle.net/20.500.11937/42156 10.1016/j.cej.2009.04.055 Elsevier BV restricted |
| spellingShingle | Utomo, Johan Asakuma, Y Maynard, Nicoleta Maeda, K. Fukui, K. Tade, Moses Semi-batch reactive crystallisation of mono-ammonium phosphate: An experimental study |
| title | Semi-batch reactive crystallisation of mono-ammonium phosphate: An experimental study |
| title_full | Semi-batch reactive crystallisation of mono-ammonium phosphate: An experimental study |
| title_fullStr | Semi-batch reactive crystallisation of mono-ammonium phosphate: An experimental study |
| title_full_unstemmed | Semi-batch reactive crystallisation of mono-ammonium phosphate: An experimental study |
| title_short | Semi-batch reactive crystallisation of mono-ammonium phosphate: An experimental study |
| title_sort | semi-batch reactive crystallisation of mono-ammonium phosphate: an experimental study |
| url | http://hdl.handle.net/20.500.11937/42156 |