Jacky wrote:
>In Japan activated carbon (from oil palm nut shell, rice, wood
>chips, coconut) is often used in water treatment too for horizontal
>systems with plants. The pores in the oil palm nut shells are
>especially good as they provide the space for attachment of
>the microflora as well as for the absorption and concentration
>of nutrients.

Q1: What do you mean by "activated carbon" and do you have any
publications describing this work?

Thanks,
Paul