About: http://webisa.webdatacommons.org/24031487

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	If the waste does not contain calcium or other polyvalent metal ions, these can be added as one of several salts during processing or as an ingredient along with the biogenetic amorphous silica.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com