Ungaziva sei kana chinhu chiri biodegradable?Zviratidzo zvitatu zvinoda kutariswa: chiyero chekudzikira, chigadzirwa chekupedzisira uye heavy metal yemukati.Imwe yacho haina kuzadzisa zviyero, saka haina kana tekinoroji biodegradable.
Parizvino, kune marudzi maviri makuru emapurasitiki ekunyepedzera: kutsiva pfungwa uye zvakasara mushure mekuora.Chikonzero chikuru chekugadzira huwandu hukuru hwemapurasitiki emanyepo anoparara ndechekuti mutemo wekudzivirira wepurasitiki wakafambisa kukura kwakasimba kwechido chepamba chepurasitiki inoparara.Parizvino, "kurambidzwa kwepurasitiki" kunongorambidzwa zvachose pamashanga epurasitiki, uye simba remukati rinoparara rinogona kuvharwa.Mune ramangwana, zvinhu zvinoshatisa zvichange zvichitenderedzwa zvishoma nezvishoma uye kushandiswa pamidziyo yese yekudyira, uye hukama pakati pekupa uye kudiwa kunoda kufananidzwa zvishoma nezvishoma, asi zviyero nekutarisira zviri kushomeka.Yakabatana nemutengo wepamusoro wezvinhu zvechokwadi zvinoparara, mabhizinesi anofambiswa nezvido, kugona kwekuzivikanwa kwevatengi hakuna simba, zvichikonzera kuparara kwenhema.
1. Pfungwa yepurasitiki isina kuora inoshandurwa
Iwo echinyakare mapurasitiki uye akasiyana ekuwedzera ekushatisa kana biobased mapurasitiki anosanganiswa pamwe chete, uye iyo pfungwa ye "chikafu-giredhi zvinhu" uye "zvakatipoteredza zvigadzirwa" zvinotsiviwa.Iyo chaiyo yekudzikira mwero yakaderera pakupedzisira, iyo isingasviki zvinodikanwa zvezvinogadziriswa zvigadzirwa uye biochemical zviyero.
Wu Yufeng, purofesa paInstitute of Circular Economy paBeijing University of Technology, akataura mubvunzurudzo neConsumption Daily kuti "giredhi rekudya" rinongori mwero wepasi rose wekuchengetedzwa kwezvinhu, kwete chitupa chezvakatipoteredza.“Kana tichitaura nezve ‘mapurasitiki anogona kuparara,’ tinoreva mapurasitiki ayo, mune mamwe mamiriro ezvinhu, anopedzisira aparara zvachose kuita carbon dioxide kana methane, mvura nezvimwe zvipenyu.Muchokwadi, zvakadaro, akawanda anonzi 'biodegradable plastiki' zvinhu zvakasanganiswa zvinosanganisa mapurasitiki akajairwa ane akasiyana ekuwedzera ekuwedzera kana biobased mapurasitiki.Pamusoro pezvo, zvimwe zvigadzirwa zvepurasitiki zvinotoshandisa zvisinga svibiswe zvepurasitiki, senge polyethylene, wedzera oxidation degradation agent, photodegradation agent, inonzi 'inoshatisa', kuratidzira musika, kukanganisa musika."
2. Kusara mushure mekuparara
Inowedzera imwe chikamu che starch, kuburikidza nehunhu hweiyo starch biodegradable zvinhu zvinodonha, PE, PP, PVC, nezvimwe zvakaora kwete chete hazvigone kutorwa nenharaunda, asi nekuti zvisingaonekwe neziso rakashama zvinogara zviri munharaunda. , kwete chete inobatsira kudzokorodza uye kuchenesa epurasitiki, kupatsanurwa kwepurasitiki kuita kuchaunza kukuvadza kukuru kune zvakatipoteredza.
Semuenzaniso, D2W uye D2W1 ndeye oxidized biodegradation additives.Mabhegi epurasitiki akagadzirwa nePE-D2W uye (PE-HD)-D2W1 akajairwa oxidized biodegradation mabhegi epurasitiki, akadaro Liu Jun, director weShanghai Institute of Quality Supervision uye Inspection Technology uye purofesa-padanho repamusoro mainjiniya, mubvunzurudzo neBeijing. News.Inosanganisirwa mune yazvino GB/T 20197-2006 classification yemapurasitiki anoshatisa.Asi nzira yekusvibisa mapurasitiki akadaro ndeyokuti huru dzinowana zviduku uye zviduku zvinoputsika, zvichivashandura kuva microplastics isingaoneki.
Nguva yekutumira: Nov-23-2022