Silicayog qhov zoo tshaj plaws kev tiv thaiv ib puag ncig hloov rau cov hlaws yas
Cov hlaws yas yog cov yas me me, feem ntau tsawg dua 0.5mm (500 microns) inch. Lawv yog siv rau hauv cov tshuaj txhuam hniav, tshuaj pleev thaiv hnub, tshuaj ntxuav tes thiab ntau lwm yam khoom, feem ntau yog los txhim kho kev sib txhuam. Tom qab siv cov khoom siv, cov hlaws yas yuav raug ntxuav thiab nws thiaj li nkag mus rau hauv dej hiav txwv thiab lwm yam ecosystems. Tsis tsuas yog cov kab mob hauv hiav txwv, tab sis kuj tib neeg lub cev tau kuaj pom muaj cov hlaws yas, yog li kev siv cov hlaws yas tau raug txwv tsis pub muaj nyob hauv ntau thaj tsam ntawm lub ntiaj teb.
Ib pab neeg tshawb fawb ntawm Imperial College London tau tshuaj xyuas qhov cuam tshuam ib puag ncig ntawm 29 lwm txoj hauv kev rau cov hlaws yas. Lawv pom tias qhov tshwm sim ntawm cov nplua nuj ntxhia silicon dioxide yog qhov zoo tshaj plaws hloov, thiab nws cov kev ua tau zoo tag nrho yog zoo dua li cov hlaws yas hauv txhua pawg. Cov txiaj ntsig kev tshawb fawb tau luam tawm hauv Nature Sustainability.
Lawv pom tias muaj ob yam tseem ceeb cuam tshuam rau ib puag ncig lub koob npe nrov ntawm cov ntaub ntawv: tus nqi ntawm lub zog siv zog ua lawv xav tau (tsim lub tsev cog khoom gases), thiab cov av thiab dej uas lawv xav tau rau cov khoom siv cog.
Almond husk feem ntau suav hais tias yog qhov zoo tshaj plaws "natural" hloov, tab sis nws xav tau ntau thaj av thiab dej kom loj hlob. Yog tias nws cog rau hauv thaj chaw tsis muaj dej, nws yog ib qho kev hloov pauv tsis zoo. Citric acid yuav tsum muaj dej tsawg thiab av, tab sis yuav tsum tau ua ntau thiab lub zog rau kev tsim khoom.Silicon dioxide, qhov zoo tshaj plaws hloov, yog inert, tsis muaj tshuaj lom thiab ntuj, yog li nws yog ib qho yooj yim mus yuav thiab txheej txheem, thiab tsis zoo li yuav ua rau lub sij hawm tsis zoo.
Txawm li cas los xij, pab pawg tshawb fawb kuj tau taw qhia tias qhov "zoo tshaj" lwm txoj hauv kev nyob ntawm qhov xwm txheej tshwj xeeb. Piv txwv li, titanium dioxide siv rau hauv cov tshuaj txhuam hniav muaj qhov cuam tshuam loj heev rau ib puag ncig, thiab nws kuj yog siv rau hauv cov tshuaj pleev thaiv hnub, thaum qhov hloov pauv yuav tsis muaj txiaj ntsig zoo tib yam rau kev tiv thaiv kab mob ntawm daim tawv nqaij.