I roto i ngā tukanga ahumahi, he mea nui te whakamahi i ngā whakarewa mō ngā mahi maha. Heoi, ko te maimoatanga o te hau kei roto i te whakarewa ka raru pea i te taiao me te ōhanga. Koinei te wāhi e whai wāhi mai ai ngā pūnaha whakaora NMP (N-methyl-2-pyrrolidone), e whakarato ana i tētahi otinga pumau mō te whakahaere whakarewa.

He whakarewa nui te NMP e whakamahia whānuitia ana i roto i ngā ahumahi pēnei i te rongoā, te hikohiko me te matū hinu. Nā tōna kaha ki te utu me te iti o te hurihanga, he mea tino pai mō ngā tono maha. Heoi, nā te nui o te utu me te pānga ki te taiao, he mea tino nui te whakaora me te hangarua o te NMP mai i ngā awa hau i roto i ngā tukanga ahumahi.

Ngā pūnaha whakaora NMPkua hangaia hei hopu me te wehewehe i te NMP mai i te hau kei roto te whakarewa hei whakamahi anō i roto i ngā tukanga. Ehara i te mea ka āwhina noa tēnei ki te whakaiti i te whakamahinga whānui o te NMP, engari ka whakaitihia hoki te pānga ki te taiao e pā ana ki tōna whakakorenga. Kātahi ka taea te whakahoki i te hau kua horoia kua ki tonu i te whakarewa ki te tukanga, te whakaputa rānei ki te āhuarangi, i runga i ngā hiahia o te kiritaki.

Ko tētahi o ngā painga matua o te pūnaha hangarua NMP ko tōna takoha ki ngā mahi pumau i roto i ngā mahi ahumahi. Mā te whakatinana i tēnei pūnaha, ka taea e ngā kamupene te whakaiti i te whakamahinga o te whakarewa, ā, mā reira ka penapenahia ngā utu me te whakaiti i ō rātou tapuwae taiao. Hei tāpiri, ko te whakaora me te hangarua o te NMP e hangai ana ki ngā mātāpono o te ōhanga porowhita, arā, ko te whakamahi i ngā rauemi me te whai hua me te whakaiti i te para.

Hei tāpiritanga, ka whakaratohia e ngā pūnaha hangarua NMP ngā otinga whai hua mō te tutuki i ngā ture. I te mea kua piki haere te aro ki ngā ture taiao me ngā paerewa tukunga, kei raro i te pēhanga ngā ahumahi ki te whakahaere pai i ngā tukunga whakarewa. Mā te haumi ki tētahi pūnaha hangarua NMP pono, ka taea e ngā kamupene te whakarite kia tutuki i a rātou ngā whakaritenga tutuki e tika ana, me te whakaatu anō i tā rātou whakapau kaha ki te tiaki taiao.

Haunga ngā painga taiao me ngā painga ture, ka puta mai hoki ngā painga ōhanga mai i ngā pūnaha hangarua NMP ki ngā pakihi. Mā te hangarua me te whakamahi anō i te NMP, ka taea e ngā kamupene te whakaiti i tō rātou whakawhirinaki ki ngā hoko whakarewa hou, ka penapena i ngā utu mō te wā roa. Hei tāpiri, ka whai wāhi te whakahaere whai hua o ngā whakarewa ki te arotautanga tukanga whānui me te whakapiki i te whai huatanga o te mahi.

He mea nui kia mōhiotia ko te whakatinanatanga o ngā pūnaha whakaora NMP me āta whakaaroaro ki ngā whakaritenga motuhake mō te tukanga me te whaihuatanga hangarau. Me aromatawai i ngā āhuatanga pēnei i te nui o te hau kei roto i te whakarewa, te kukū NMP, me ngā āhuatanga tukanga whānui hei hoahoa i tētahi otinga ritenga e puta ai ngā hua pai rawa atu.

Hei whakarāpopototanga,Ngā pūnaha whakaora NMPwhakarato i tētahi huarahi pumau, whai hua hoki ki te whakahaere whakarewa i roto i ngā taiao ahumahi. Mā te hopu me te whakaora i te NMP mai i te awa hau, ka tautoko te pūnaha i ngā whāinga taiao, te tutuki i ngā ture me ngā painga ōhanga. I te mea kei te whakatairanga tonu te umanga i te pumau me te whai huatanga o ngā rauemi, ka whai wāhi nui te whakamahi i ngā pūnaha hangarua NMP ki te hanga i tētahi heke mai matomato, whai kawenga hoki mō te whakahaere whakarewa.