Investigation of Aluminium White Dross for Hydrogen Generation Hydrolysis in Low-Concentration Alkali
In this work, three samples of primary aluminium dross were investigated and compared to construction aluminium waste. The composition was determined, and an evaluation of hydrogen generation via hydrolysis in a low-concentration alkali solution was performed. The composition revealed low to moderat...
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-02-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/15/5/2640 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850030787988029440 |
|---|---|
| author | Ainars Knoks Ansis Mezulis Christiaan Richter Sarunas Varnagiris Marius Urbonavicius Darius Milcius Rauan Meirbekova Gudmundur Gunnarsson Daniels Jurjevs Raitis Sika Janis Kleperis |
| author_facet | Ainars Knoks Ansis Mezulis Christiaan Richter Sarunas Varnagiris Marius Urbonavicius Darius Milcius Rauan Meirbekova Gudmundur Gunnarsson Daniels Jurjevs Raitis Sika Janis Kleperis |
| author_sort | Ainars Knoks |
| collection | DOAJ |
| description | In this work, three samples of primary aluminium dross were investigated and compared to construction aluminium waste. The composition was determined, and an evaluation of hydrogen generation via hydrolysis in a low-concentration alkali solution was performed. The composition revealed low to moderate aluminium content and the presence of various crystalline phases; hydrolysis reactions showed hydrogen generation’s direct dependence on the amount of aluminium present, which translated into variation in the volume per sample mass. It was found that the composition played a substantial role in the evolution of hydrogen and its purity, simultaneously indicating a possible opportunity for dross use in hydrogen generation and power production. It was revealed that, in addition to the expected hydrogen, methane was released from some dross samples during the hydrolysis reaction. To compare the reaction kinetics, the reaction rate was obtained using the spherical solid particle shrinking core model and compared with that of construction aluminium waste. Hydrogen generation was compared to that in the known literature, and the dependence on the sample composition was determined. |
| format | Article |
| id | doaj-art-6a9b4c19a75f4c588d9ade4f181a9fd3 |
| institution | DOAJ |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-6a9b4c19a75f4c588d9ade4f181a9fd32025-08-20T02:59:07ZengMDPI AGApplied Sciences2076-34172025-02-01155264010.3390/app15052640Investigation of Aluminium White Dross for Hydrogen Generation Hydrolysis in Low-Concentration AlkaliAinars Knoks0Ansis Mezulis1Christiaan Richter2Sarunas Varnagiris3Marius Urbonavicius4Darius Milcius5Rauan Meirbekova6Gudmundur Gunnarsson7Daniels Jurjevs8Raitis Sika9Janis Kleperis10Institute of Solid State Physics, University of Latvia, LV-1063 Riga, LatviaInstitute of Solid State Physics, University of Latvia, LV-1063 Riga, LatviaFaculty of Industrial Engineering, Mechanical Engineering and Computer Science, University of Iceland, 107 Reykjavik, IcelandCenter for Hydrogen Energy Technologies, Lithuanian Energy Institute, 3 Breslaujos, 44403 Kaunas, LithuaniaCenter for Hydrogen Energy Technologies, Lithuanian Energy Institute, 3 Breslaujos, 44403 Kaunas, LithuaniaCenter for Hydrogen Energy Technologies, Lithuanian Energy Institute, 3 Breslaujos, 44403 Kaunas, LithuaniaIceTec, Árleynir 8, 112 Reykjavik, IcelandIceTec, Árleynir 8, 112 Reykjavik, IcelandInstitute of Solid State Physics, University of Latvia, LV-1063 Riga, LatviaInstitute of Solid State Physics, University of Latvia, LV-1063 Riga, LatviaInstitute of Solid State Physics, University of Latvia, LV-1063 Riga, LatviaIn this work, three samples of primary aluminium dross were investigated and compared to construction aluminium waste. The composition was determined, and an evaluation of hydrogen generation via hydrolysis in a low-concentration alkali solution was performed. The composition revealed low to moderate aluminium content and the presence of various crystalline phases; hydrolysis reactions showed hydrogen generation’s direct dependence on the amount of aluminium present, which translated into variation in the volume per sample mass. It was found that the composition played a substantial role in the evolution of hydrogen and its purity, simultaneously indicating a possible opportunity for dross use in hydrogen generation and power production. It was revealed that, in addition to the expected hydrogen, methane was released from some dross samples during the hydrolysis reaction. To compare the reaction kinetics, the reaction rate was obtained using the spherical solid particle shrinking core model and compared with that of construction aluminium waste. Hydrogen generation was compared to that in the known literature, and the dependence on the sample composition was determined.https://www.mdpi.com/2076-3417/15/5/2640aluminium drosswaste aluminiumrecyclinghydrogen generationhydrolysisfuel cell |
| spellingShingle | Ainars Knoks Ansis Mezulis Christiaan Richter Sarunas Varnagiris Marius Urbonavicius Darius Milcius Rauan Meirbekova Gudmundur Gunnarsson Daniels Jurjevs Raitis Sika Janis Kleperis Investigation of Aluminium White Dross for Hydrogen Generation Hydrolysis in Low-Concentration Alkali Applied Sciences aluminium dross waste aluminium recycling hydrogen generation hydrolysis fuel cell |
| title | Investigation of Aluminium White Dross for Hydrogen Generation Hydrolysis in Low-Concentration Alkali |
| title_full | Investigation of Aluminium White Dross for Hydrogen Generation Hydrolysis in Low-Concentration Alkali |
| title_fullStr | Investigation of Aluminium White Dross for Hydrogen Generation Hydrolysis in Low-Concentration Alkali |
| title_full_unstemmed | Investigation of Aluminium White Dross for Hydrogen Generation Hydrolysis in Low-Concentration Alkali |
| title_short | Investigation of Aluminium White Dross for Hydrogen Generation Hydrolysis in Low-Concentration Alkali |
| title_sort | investigation of aluminium white dross for hydrogen generation hydrolysis in low concentration alkali |
| topic | aluminium dross waste aluminium recycling hydrogen generation hydrolysis fuel cell |
| url | https://www.mdpi.com/2076-3417/15/5/2640 |
| work_keys_str_mv | AT ainarsknoks investigationofaluminiumwhitedrossforhydrogengenerationhydrolysisinlowconcentrationalkali AT ansismezulis investigationofaluminiumwhitedrossforhydrogengenerationhydrolysisinlowconcentrationalkali AT christiaanrichter investigationofaluminiumwhitedrossforhydrogengenerationhydrolysisinlowconcentrationalkali AT sarunasvarnagiris investigationofaluminiumwhitedrossforhydrogengenerationhydrolysisinlowconcentrationalkali AT mariusurbonavicius investigationofaluminiumwhitedrossforhydrogengenerationhydrolysisinlowconcentrationalkali AT dariusmilcius investigationofaluminiumwhitedrossforhydrogengenerationhydrolysisinlowconcentrationalkali AT rauanmeirbekova investigationofaluminiumwhitedrossforhydrogengenerationhydrolysisinlowconcentrationalkali AT gudmundurgunnarsson investigationofaluminiumwhitedrossforhydrogengenerationhydrolysisinlowconcentrationalkali AT danielsjurjevs investigationofaluminiumwhitedrossforhydrogengenerationhydrolysisinlowconcentrationalkali AT raitissika investigationofaluminiumwhitedrossforhydrogengenerationhydrolysisinlowconcentrationalkali AT janiskleperis investigationofaluminiumwhitedrossforhydrogengenerationhydrolysisinlowconcentrationalkali |