Please hold your questions till the end of the seminar. You can ask question directly by unmuting or via the chat box. thanks

Given the different efficacy of the different shames of the hematite crystals in different concentrations of contaminant, would mixtures of the different crystals be used in situations where there are variable levels through time?

Just curious how natural organic matter influence the removal of anions by facet engineered materials

Oops, meant shapes of crytals

is there anything done to make sure that the hematite crystals remain stable over time/pH? do the surfaces erode/change over time

Great talk and information! I would like to know what was the time and the pH that the experiments went through so you can know that As removal stayed for long periods of time.

and the price of the Copper beads per gallon treated?

Great talk! I was wondering how you decided the size of the beads?

How will you avoid clogging of a column with a nano packing?

Thank you very much!

Great presentation!