Ko ngā rauemi pirau ka taea te wehewehe kia whā ngā wāhanga: ngā kirihou pirau-ataata, ngā kirihou pirau-ora, ngā kirihou pirau-ataata/ora, me ngā kirihou pirau-wai. Ko ngā kirihou pirau-ataata he mea whakaaweawe-ataata e konatunatua ana ki ngā kirihou. I raro i te mahi a te rā, ka pirau haere ngā kirihou. Engari ko tōna ngoikoretanga ko te pānga o te rā me te āhuarangi o te taiao ki te wā pirau, nō reira kāore e taea te whakahaere. Ko ngā kirihou pirau-ora e pā ana ki ngā kirihou ka taea te wawahi hei matū iti-ngota e ngā moroiti e noho ana i te taiao, pērā i te huakita, te pokepokea ai, me te rimurimu i raro i ētahi āhuatanga. He watea te penapena me te kawe i ēnei kirihou, ā, he whānuitia ngā whakamahinga. Ko ngā kirihou mārama/piro-ora he kirihou e whakakotahi ana i ngā āhuatanga rua o ngā kirihou pirau-ataata me ngā kirihou pirau-ora. I tēnei wā, ko ngā kirihou pirau-ora e whakawhanakehia ana i tōku whenua ko ngā biopolyesters pērā i te waikawa polylactic (PLA), te polyhydroxyalkanoate (PHA), te copolymer hauhā waro (PPC) me ētahi atu. Ka hangaia te waikawa polylactic (PLA) mā te whakakotahitanga o ngā monomers lactide i tangohia mai i ngā huka tipu, ā, ka taea te whakahoro katoa hei wai me te hauhā waro i raro i te whakawairakau ahumahi. Ko ngā Polyhydroxyalkanoates (PHA) he copolyesters aliphatic me ngā hanganga rerekē i hangaia mā te whakapūkara o ngā momo pūtake waro e ngā moroiti. Kāore e taea te whakamahi noa i roto i ngā rauemi takai, ngā kiriata ahuwhenua, me ētahi atu, engari ka taea hoki te whakamahi whānuitia i roto i ngā rongoā, ngā whakapaipai, me te whāngai kararehe me ētahi atu mara. Ko ngā kirihou pirau-wai he kirihou ka taea te whakarewa ki te wai nā te tāpiri o ngā matū mimiti-wai. I te whanaketanga o te hangarau koiora hou, kua noho ngā kirihou pirau-koiora hei wāhi wera hou i roto i te rangahau me te whanaketanga.

I Haina, kāore anō kia tino pakari te hangarau rauemi pirau o nāianei, ā, tera pea ētahi tāpiringa. Mēnā ka tāpirihia ēnei tāpiringa, e kore te kirihou e tutuki i te pānga pirau. Mēnā kāore i tāpirihia, ka pirau tonu tēnei rauemi kirihou i raro i ngā āhuatanga katoa, inā koa i ngā wāhi pāmahana teitei, nō reira he tino uaua ki te penapena.
Hei tāpiritanga, ko te whakamahinga o ngā rauemi pirau-koiora hei hanga huangā pokepokeme whai whakarerekētanga motuhake.