<http://webisa.webdatacommons.org/198022917>	<http://www.w3.org/ns/prov#value>	"During the recycling process, contaminants such as emulsified oils and heavy metals must be removed either by filtration, distillation, reverse osmosis, or ion exchange." .
<http://webisa.webdatacommons.org/prov/227409761>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/198022917> .
<http://webisa.webdatacommons.org/prov/208475392>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/198022917> .
<http://webisa.webdatacommons.org/198022917>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/198022917>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<cedmag.com> .