The study looked at how Spirulina platensis absorbs chromium (III). They found that the process involves two steps: quick adsorption and slow absorption. Chromium (III) compounds with weaker bonds are absorbed better. More chromium (III) is absorbed when there is a higher concentration of it or more algae cells. Spirulina powder absorbs more chromium (III) than fresh Spirulina. The best pH for absorption is 7. Higher temperature and light help absorption. Other ions can either help or hinder the absorption of chromium (III) by Spirulina platensis.