Cov kws tshawb fawb tau tsim ib pawg khoom siv rooj tog "ntsuab" ua los ntawm qab zib thiab xyoob uas yooj yim siv thiab siv tau, cog lus tias yuav yog lwm txoj hauv kev rau cov khob yas thiab lwm yam thawv yas siv ib zaug xwb. Txawm hais tias cov yas ib txwm muaj lossis cov polymers uas lwj tau yuav siv sijhawm txog 450 xyoo lossis kub heev kom lwj, cov khoom siv no tsis muaj tshuaj lom thiab zoo rau ib puag ncig lwj hauv 60 hnub xwb thiab huv txaus los khaws koj cov kas fes sawv ntxov lossis cov khoom noj coj mus tsev. Ib tsab xov xwm txog lwm txoj hauv kev yas no tau luam tawm hauv phau ntawv xov xwm Matter rau lub Kaum Ib Hlis 12, 2020.
"Yog tias kuv hais qhov tseeb, thaum kuv thawj zaug tuaj rau Tebchaws Meskas xyoo 2007, kuv xav tsis thoob rau qhov muaj cov thawv yas siv ib zaug xwb hauv cov khw muag khoom loj," tus kws sau ntawv Julie Hongli ntawm Northeastern University hais. "Lawv ua rau peb lub neej yooj yim dua, tab sis lawv kuj dhau los ua cov khib nyiab uas tsis lwj hauv ib puag ncig." Tom qab ntawd, pom ntau lub tais yas, phaj, thiab riam raug pov tseg rau hauv lub thoob khib nyiab ntawm cov rooj sib tham thiab cov rooj sib tham ua rau nws xav tsis thoob, "Peb puas tuaj yeem siv cov khoom siv ruaj khov dua?"
Thaum nrhiav lwm txoj hauv kev rau cov thawv ntim khoom noj yas, Zhu thiab nws cov npoj yaig tau tig mus rau xyoob thiab ib qho ntawm cov chaw pov tseg loj tshaj plaws hauv kev lag luam khoom noj: sugarcane bagasse. Pab neeg tau sib txuas cov xyoob ntev, nyias nrog cov bagasse luv, tuab los ua ib daim ntaub ntom ntom thiab tsim cov thawv los ntawm ob yam khoom no uas ruaj khov thiab lwj tau. Tsis yog cov thawv tshiab no muaj zog ib puag ncig zoo li yas thiab muaj peev xwm tuav cov kua dej xwb, tab sis lawv kuj huv dua li cov thawv lwj tau ua los ntawm cov khoom siv rov ua dua tshiab, uas tej zaum yuav tsis tau ntxuav kom huv si. Lawv pib lwj hauv av tom qab 30 txog 45 hnub thiab lwj tag tom qab 60 hnub.
"Kev ua cov thawv ntim khoom noj tsis yog ib txoj haujlwm yooj yim. Lawv tsis yog yuav tsum tsuas yog lwj tau xwb," Zhu hais. "Ntawm ib sab tes, peb xav tau cov khoom siv uas muaj kev nyab xeeb rau zaub mov; ntawm qhov tod tes, lub thawv yuav tsum muaj lub zog siab thaum ntub thiab huv si, vim nws yuav siv los khaws kas fes kub thiab pluas su kub."
Cov kws tshawb fawb tau ntxiv alkyl ketenedimer (AKD), uas yog ib yam tshuaj uas tsis ua rau ib puag ncig puas tsuaj uas siv dav hauv kev lag luam zaub mov, los txhim kho cov tais diav pwm kom tsis txhob muaj roj thiab dej, kom ntseeg tau tias nws ruaj khov hauv cov chaw noo noo. Nrog cov khoom xyaw no, cov tais diav tshiab no ua tau zoo dua li cov thawv ntim khoom noj uas lwj tau hauv khw, xws li lwm cov tais diav qab zib bagasse thiab cov thawv qe, hauv kev muaj zog, tiv taus roj, thiab tsis muaj tshuaj lom.
Cov khob uas cov kws tshawb fawb tsim muaj lwm qhov zoo dua: txo cov pa roj carbon dioxide. Cov txheej txheem tsim cov khoom tshiab tsim tawm 97% tsawg dua CO2 dua li cov thawv yas ib txwm muaj, thiab 65% tsawg dua li ntawv thiab cov yas uas lwj tau. Lub hom phiaj tom ntej ntawm pab neeg yog txhim kho kev siv hluav taws xob ntawm cov txheej txheem tsim khoom thiab txo cov nqi kom nws sib tw nrog cov yas. Txawm hais tias cov khob ua los ntawm cov khoom siv tshiab raug nqi ob npaug ntau dua ($ 2,333 ib tuj) dua li cov uas ua los ntawm cov yas uas lwj tau ($ 4,750 ib tuj), cov khob yas ib txwm tseem pheej yig dua me ntsis ($ 2,177 ib tuj).
"Nws nyuaj rau tiv thaiv tib neeg kom tsis txhob siv cov thawv pov tseg vim tias lawv pheej yig thiab yooj yim," Zhu hais. "Tab sis kuv xav tias ib qho kev daws teeb meem zoo yuav yog siv cov khoom siv uas zoo rau ib puag ncig, lwj tau los tsim cov thawv pov tseg no."
Tau los ntawm: Liu Chao, Luan Pengcheng, Li Qiang, Cheng Zheng, Sun Xiao, Cao Daxian, thiab Zhu Hongli, “Biodegradable, Hygienic, and Compostable Tableware Made from Sugarcane-Bamboo Hybrid Fibers as an Alternative to Plastic,” Matter, Kaum Ib Hlis 12, 2020. DOI: 10.1016/j.matt.2020.10.004
Lub sijhawm tshaj tawm: Cuaj hlis-10-2025