26th October 2006 at 3:36 pm #677
Hi Lena
Check out the link http://biosandfilter.org/biosandfilter/index.php/item/302
This details what I know about sand filter capacity to remove heavy metals. Check out the reference to Palmateer et al which looked at HgCl2 removal – I can send you this by email if you like, just let me know.
Eric