The question is too vague to answer. I recently found that silica-metal complex can be absorbed by diatoms.

There are too many articles about this topic on the Google Scholar. But I think there is a long time before the industrial application of this technology. Any experiences? It's not a simple thing as we can solve here.

Finally i got the funds! My project is called : Remediation of water resources from Canal Palito-Chañaral by bacterial biosorption.

If you write a good article about economic sustainability of biosorbents, it is very likely that it will be highly cited article! There is a huge need to understand these issues!