Mann + Hummel's combifilter yemukati memotokari yanga iri chikamu chezvidzidzo zvemumunda zvehunyanzvi paYunivhesiti yeHeidelberg izvo zvakaratidza kuti combifilter inoderedza kuwanda kwenitrogen dioxide mukati memotokari neinopfuura 90%.

Kuchengetedza vanogara mumakabhini kubva kumagasi anokuvadza uye kunhuhwirira kusingafadzi, iyo combifilter ine ingangoita 140 g yeyakanyanya inoshanda activated kabhoni. Iyi ine porous framework inovhara kutenderedza 140,000 m² yenzvimbo yemukati, inofananidzwa nehukuru hwenhandare dzenhabvu makumi maviri.

Kana ma nitrogen oxides angorova kabhoni yakabatidzwa, mamwe anonamira mumapores uye anonamirwa ipapo. Chimwe chikamu chinopindirana nehunyoro huri mumhepo, kubudisa nitrous acid, iyo inoramba iri musefa. Pamusoro pezvo, iyo muchetura nitrogen dioxide inoderedzwa kuita nitrogen monoxide mune inokonzeresa maitiro. Izvi zvinoreva kuti Mann + Hummel particle filter inogona kuderedza magasi anokuvadza uye kunhuhwirira kusingafadzi neinopfuura 90% kana ichienzaniswa neyakajairwa particle filter.

Iyo combifilter inovharawo guruva rakanaka uye mafirita ebiofunctional anochengeta akawanda allellege uye hutachiona aerosols nepo yakakosha kupfekedza ichidzivirira kukura kwebhakitiriya uye mold.