| 1 | However hydroxyl has no effect on carbon dioxide. | |
| 2 | Iron and aluminum hydroxides are present in soils in both crystalline and amorphous forms. | |
| 3 | This method does not produce or require the handling of corrosive quaternary ammonium hydroxides. | |
| 4 | A source of calcium and hydroxide should be provided to avoid such conflicting operation conditions. | |
| 5 | That would require an understanding of hydroxyl and its variability. |