SINGAPORE: Tej zaum koj yuav xav tias kev hloov ntawm cov yas siv ib zaug rau cov khoom siv yas biodegradable yog qhov zoo rau ib puag ncig tab sis hauv Singapore, tsis muaj "tsis muaj qhov sib txawv", cov kws tshaj lij tau hais.
Lawv feem ntau xaus rau hauv tib qhov chaw - lub qhov cub, hais tias Associate Professor Tong Yen Wah los ntawm Department of Chemical and Biomolecular Engineering ntawm National University of Singapore (NUS).
Biodegradable yas pov tseg ua rau muaj kev sib txawv rau ib puag ncig tsuas yog thaum lawv faus rau hauv qhov chaw pov tseg, nws hais ntxiv.
"Nyob rau hauv cov xwm txheej no, cov hnab yas no tuaj yeem degrade sai dua piv rau cov hnab yas polyethylene tsis tu ncua thiab yuav tsis cuam tshuam rau ib puag ncig ntau npaum li.Zuag qhia tag nrho rau Singapore, tej zaum nws yuav kim dua rau incinerate biodegradable plastics, "said Assoc Prof Tong.Nws piav qhia tias qhov no yog vim qee qhov kev xaiv biodegradable siv ntau cov peev txheej los tsim, uas ua rau lawv kim dua.
Lub tswv yim sib npaug nrog qhov Dr Amy Khor, Senior Minister of State for the Environment and Water Resources said in Parliament in August - that a life-cycle assessment of single-use carrier bag and disposables by the National Environment Agency (NEA) pom tias hloov plastics nrog rau lwm hom khoom ntim khoom siv ib zaug yog "tsis tas yuav zoo dua rau ib puag ncig".
"Hauv Singapore, cov pov tseg tau muab pov tseg thiab tsis tso rau hauv qhov chaw pov tseg kom degrade.Qhov no txhais tau hais tias cov kev xav tau ntawm cov hnab ntim oxo-degradable zoo ib yam li cov hnab yas, thiab lawv kuj muaj kev cuam tshuam ib puag ncig zoo sib xws thaum hlawv.
"Tsis tas li ntawd, oxo-degradable hnab tuaj yeem cuam tshuam cov txheej txheem rov ua dua tshiab thaum sib xyaw nrog cov khoom siv niaj hnub," NEA txoj kev tshawb fawb tau hais.
Oxo-degradable plastics tau tawg sai sai rau hauv cov khoom me me, hu ua microplastics, tab sis tsis txhob tawg ntawm qib molecular lossis polymer xws li biodegradable thiab compostable plastics.
Cov txiaj ntsig microplastics raug tso tseg nyob rau hauv ib puag ncig indefinitely kom txog thaum lawv tag nrho tawg.
nws European Union (EU) tau txiav txim siab qhov tseeb hauv lub Peb Hlis kom txwv cov khoom ua los ntawm oxo-degradable yas nrog rau kev txwv tsis pub siv cov yas ib zaug.
Hauv kev txiav txim siab, EU tau hais tias oxo-degradable yas "tsis zoo biodegrade thiab yog li ua rau muaj kuab paug microplastic hauv ib puag ncig".
Post lub sij hawm: Dec-22-2023
