Txhawm rau kom meej meej rau cov pej xeem' s tsis meej pem txog lub ntsiab lus ntawm biodegradability, British Standards Institute tsis ntev los no tau tshaj tawm thawj biodegradable yas txheem PAS 9017. Raws li BSI tus qauv tshiab, 90% ntawm cov organic carbon uas muaj nyob hauv plastics yuav tsum yog hloov mus rau hauv cov pa roj carbon dioxide tsis pub dhau 730 hnub kom tau raws tus qauv.
PAS 9017 tus qauv npog cov polyolefin plastics, uas yog cov txheej txheem ntau ntawm cov thermoplastics nrog rau cov polyethylene thiab polypropylene, uas yog ib nrab ntawm tag nrho cov pa phem nyob hauv ib puag ncig. Polyolefin yog siv dav hauv kev tsim cov hnab tes, txiv hmab txiv ntoo thiab zaub ntim thiab cov raj mis haus.
Scott Steedman, tus thawj coj ntawm BSI Tus Qauv, tau hais tias: "Yuav kom ua tau raws li kev sib tw thoob ntiaj teb yas yuav tsum muaj kev xav thiab kev tsim kho tshiab." Nws hais ntxiv: "Cov tswv yim tshiab xav tau kev pom zoo, cov qauv zoo thiab ywj pheej kom qhov kev lag luam xa tau cov kev daws teeb meem uas ntseeg tau." Tus txheej txheem tshiab tau piav qhia raws li" thawj qhov kev lag luam pom zoo los soj ntsuam biodegradability ntawm polyolefins thiab yuav ua kom nrawm cov ntaub ntawv pov thawj ntawm biodegradability ntawm plastics."
Cov txheej txheem tsuas yog siv rau cov av yas uas paug cov ib puag ncig
PAS 9017 tus qauv hu ua" Kev soj ntsuam ntawm Biodegradability ntawm Polyolefins nyob rau hauv Open Terrestrial Environment", uas koom nrog kuaj plastics ua pov thawj tias lawv tuaj yeem decomposed mus rau qhov chaw tsis muaj pa phem nyob rau hauv qhov chaw qhib.
Cov qauv no tsuas yog siv rau cov pa phem yas nyob hauv thaj av ib puag ncig. Raws li BSI cov txheeb cais, cov av nkos pov tseg cov yas paug qias neeg rau peb-peb lub hlis ntawm cov pa paug.
Cov qauv no tsis tuaj yeem npog cov plastics uas nyob hauv dej hiav txwv. Raws li cov kws tshawb nrhiav, nyob rau hauv ib puag ncig marine, lub hnab yas biodegradable tseem ua tsis tau zoo rau tom qab peb xyoos ntawm kev muaj.
BSI tau hais tias yog thaum lub sijhawm kawg ntawm lub sijhawm ntsuas, 90% lossis ntau dua ntawm cov organic carbon hauv paraffin wax hloov pauv mus rau carbon dioxide, cov qauv yog txiav txim siab biodegradable. Lub sijhawm ntsuas ntev tshaj plaws yuav tsum yog 730 hnub.
Lub hom phiaj ntawm kev teeb tsa cov qauv: los tiv thaiv cov lag luam los ntawm kev dag ntxias pej xeem
Xyoo tas los, vim muaj kev txhawj xeeb tias cov tuam txhab lag luam yuav ua tsis ncaj rau pej xeem thaum siv cov ntsiab lus xws li" biodegradable" ;," bioplastic" thiab" compostable" ;, Tsoomfwv Askiv tau nqua hu kom cov kws tshaj lij pabcuam lawv txhim kho cov qauv yas.
Lub sij hawm" biodegradable" txhais tau hais tias ib qho khoom siv twg yuav yaj mus ua kev puas tsuaj hauv ib puag ncig, txawm hais tias nws yuav siv ntau pua xyoo.
GG quot; Bioplastics" hais txog cov yas ua los ntawm cov nroj tsuag lossis tsiaj cov ntaub ntawv, uas tsis tas yuav biodegradable." Compostable yas" tsuas tuaj yeem decomposed tsis muaj teebmeem thaum muab tso rau hauv ib puag ncig tshwj xeeb qhov chaw zom khoom.
PAS 9017 tus qauv yog pib los ntawm cov kws tshaj lij plastics pab pawg thiab tau txais kev txhawb nqa los ntawm British lub tuam txhab Polymateria, uas tau tsim ib qho kev ntxiv ntxiv uas tuaj yeem biodegrade petrochemical-based plastics.
Cov txheej txheem tshiab rau biodegradation ntawm roj av-based plastics
Polymateria' s ntxiv ntxiv tuaj yeem biodegrade tsis tshua muaj tshuaj tiv thaiv zoo tsis muaj kev ua cov phom sij ua kom puas tsuaj tau. Tus mob yog nthuav tawm cov yas kom huab cua, lub teeb thiab dej nyob hauv lub sijhawm. Ntau cov yas hloov pauv mus rau carbon dioxide thaum lub sijhawm no.
Polymateria tau hais tias lawv cov thev naus laus zis tau tsim muaj ntau qhov txiaj ntsig los txhawm rau kom ntseeg tau qhov kev puas tsuaj ntawm cov ntawv yas qhib, tsis yog ib qho tseem ceeb.
GG quot; Yog li ntawd, lub sijhawm, ultraviolet teeb, kub, av noo thiab huab cua yuav txhua tus ua lub luag haujlwm ntawm ntau theem kom muaj lub thev naus laus zis los hloov plastics ua cov khoom siv biocompatible." Polymateria CEO Niall Dunne tau hais.
GG quot; Kev tshuaj ntsuam xyuas kev ywj pheej thib peb tau pom tias hauv cov xwm txheej tiag tiag, peb lub thev naus laus zis tuaj yeem ua tiav 100% biodegradation ntawm cov thawv yas tsis nruj hauv 336 hnub, thiab 100% biodegradation ntawm zaj duab xis cov khoom siv hauv 226 hnub. Thaum lub sijhawm txheej txheem no, Kom ua tiav cov yas yas xoom, thiab tsis muaj kev phom sij rau ib puag ncig. Niall Dunne ntxiv.
