Allan Griff, kubvunza mainjiniya emakemikari, munyori wePlasticsToday, uye anozviti realist, akawana chinyorwa muMIT News yakazara nenhema dzesainzi.Anopawo pfungwa dzake.
MIT News yakanditumira mushumo wekutsvagisa kunosanganisira zeolites, porous minerals inoshandiswa kugadzira propane kubva kune zvimedu (zvakadzokororwa) polyolefins ine cobalt catalyst.Ndakashamisika nekutadza kwesainzi uye kutsausa icho chinyorwa, kunyanya tichifunga nezvekwakabva kuMIT.
Porous zeolites anozivikanwa.Kana vaongorori vachigona kushandisa saizi yavo yepore kugadzira matatu-kabhoni mamorekuru (propane), inhau.Asi zvinobvunza mubvunzo wekuti ingani 1-kabhoni (methane) uye 2-kabhoni (ethane) inopfuura uye zvaunoita navo.
Chinyorwa ichi zvakare chinoreva kuti recyclable polyolefins zvisvibisa zvisina basa, izvo hazvina kunaka nekuti hazvisi muchetura muchimiro chazvo chakasimba - ma bond akasimba eCC, cheni refu, reactivity yakaderera.Ini ndaizonetseka zvakanyanya nezve chepfu yecobalt kupfuura mapurasitiki.
Toxicity yemapurasitiki akasimba mufananidzo wakakurumbira unobva pakudiwa kwevanhu kupikisa sayenzi kuitira kuti titende mune zvisingabviri, izvo zvinodzokera kunyaradzo yehucheche apo hapana chinogona kutsanangurwa.
Chinyorwa chinosanganisa PET uye PE uye chinosanganisira kudhirowa (pamusoro) kwebhodhoro resoda, iro rakagadzirwa kubva kuPET, kemikari yakasiyana zvakanyanya kubva kuma polyolefins uye yakatove yakashandiswazve.Hazvina basa, sezvo zvinofadza kune vanhu vanoona mabhodhoro akawanda epurasitiki uye vanofunga kuti mapurasitiki ose anokuvadza.
Iyo dhizaini zvakare inorasisa sezvo ichiratidza chikafu chepurasitiki chine mhete (kunhuhwirira) uye kugadzirwa kwepropylene, kwete propane.Propylene inogona kuve yakakosha kupfuura propane uye haidi yakawedzerwa mahydrogens.Mufananidzo wacho unoratidzawo kugadzirwa kwemethane, iyo isingadikanwi, kunyanya mumhepo.
Chinyorwa chinotaura kuti hupfumi hwekugadzira propane uye kuitengesa huri kuvimbisa, asi vanyori havapi mari kana kushanda kana kutengesa / mutengo data.Uye hapana chinhu pane simba rinoda mu kilowatt-maawa, izvo zvinogona kuita kuti maitiro asanyanya kukwezva kune vakawanda vane pfungwa dzezvakatipoteredza.Iwe unofanirwa kutyora akawanda ayo akasimba eCC zvisungo kutyora iyo polymer cheni, chikanganiso chakakosha mune yakanyanya advanced / makemikari recycling kunze kweimwe pyrolysis.
Chekupedzisira, kana kuti kutanga, chinyorwa chinodaidza mufananidzo wakakurumbira wemapurasitiki muvanhu (nehove), tichiregeredza kusaita kwekugaya kana kutenderera.Zvimedu zvacho zvakakurisa kwazvo kuti zvipinde mumadziro emukati zvobva zvatenderera nemunetiweki yemacapillaries.Uye zvakadii, sezvandinogara ndichitaura.Mambure akaraswa anogona kukuvadza zvisikwa zvomumvura, asi ndozvakaitawo kubata hove nokudzidya.
Asi, vanhu vazhinji vachiri kuda kutenda kuti micro-plastiki iri mukati medu kuti itsigire chido chavo chekudzivisa sayenzi, iyo inovadzivisa kunyaradzwa kwezvishamiso.Vanokasira kudaidza plastiki ine chepfu nekuti ndeye:
● zvisiri zvechisikigo (asi kudengenyeka kwenyika uye mavhairasi zvakasikwa);
● kemikari (asi zvinhu zvose zvinogadzirwa nemakemikari, kusanganisira mvura, mhepo, uye isu);
● inoshanduka (asi ndizvo zvakaita mamiriro ekunze nemiviri yedu);
● synthetic (asi ndozvakaitawo mishonga yakawanda nezvokudya);
● makambani (asi makambani ari kugadzira uye anochengeta mitengo yakaderera kana ichidzorwa zvine hunyanzvi).
Chatinotya chaizvo isu pachedu - kushandura vanhu.
Havasi chete ruzhinji rusina sayenzi vanofunga nenzira iyi.Indasitiri yedu pachedu iri kuisa mari mukuedza kumisa "kusvibiswa kwepurasitiki" sezvakaita vezvematongerwo enyika vanonyatsoona ngano-kunzwisisa sekuita izvo zvinoda vavhoti.
Marara idambudziko rakasiyana nekusvibiswa, uye indasitiri yedu yepurasitiki inogona uye inofanira kuderedza kurasikirwa kwayo.Asi ngatisakanganwe kuti mapurasitiki anobatsira kuderedza mamwe tsvina - zvokudya, simba, mvura - uye kudzivirira kukura kwepathogen uye utachiona, asi hunokonzera hapana.
Plastics haina kukuvadza asi vanhu vanoda kuti ive yakaipa?Hongu, uye zvino pamwe unoona chikonzero.
Nguva yekutumira: Zvita-09-2022