Phosphorus in sewage is a big problem, but algae can help by absorbing it. Scientists studied how algae remove phosphorus from wastewater. They found that understanding how algae store and break down phosphorus is key to making this process work well. Factors like the environment and algae's own biology affect how well they remove phosphorus. Scientists also looked at ways to recover algae after they've removed phosphorus to keep the process going. They suggest using tiny particles like magnesium and iron to make phosphorus removal even better.