Xov xwm
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Cov txiaj ntsig tsis kawg uas cov hnab yas biodegradable coj mus rau tib neeg
Txhua tus paub tias kev tsim cov hnab yas degradable tau ua rau muaj txiaj ntsig zoo rau lub neej no. Lawv tuaj yeem degrade tag nrho cov yas uas yuav tsum tau decomposed rau 100 xyoo hauv 2 xyoos xwb. Qhov no tsis yog tsuas yog kev noj qab haus huv xwb, tab sis kuj tag nrho lub teb chaws txoj hmoo Cov hnab yas muaj ...Nyeem ntxiv -
Keeb kwm ntawm kev ntim khoom
Niaj hnub nimno ntim khoom Niaj hnub nimno ntim tsim yog sib npaug rau lub xyoo pua 16th mus rau 19th caug xyoo. Nrog rau qhov tshwm sim ntawm industrialization, ib tug loj tus naj npawb ntawm cov khoom ntim tau ua rau ib co ceev-tsim lub teb chaws pib tsim ib tug kev lag luam ntawm lub tshuab tsim cov khoom ntim. Nyob rau hauv cov nqe lus ntawm ...Nyeem ntxiv -
Dab tsi yog degradable ntim hnab thiab tag nrho degradable ntim hnab?
Degradable ntim hnab txhais tau hais tias lawv tuaj yeem degraded, tab sis degradation tuaj yeem muab faib ua "degradable" thiab "tag nrho degradable". Ib nrab degradation yog hais txog qhov sib ntxiv ntawm qee yam additives (xws li hmoov txhuv nplej siab, hloov cov hmoov txhuv nplej siab los yog lwm yam cellulose, photosensitizers, biode ...Nyeem ntxiv -
Txoj kev loj hlob ntawm cov hnab ntim khoom
1. Raws li cov ntsiab lus xav tau, lub hnab ntim khoom yuav tsum ua kom tau raws li cov kev xav tau ntawm kev ua haujlwm, xws li kev nruj, cov khoom thaiv, kev ruaj khov, steaming, khov, thiab lwm yam. Cov ntaub ntawv tshiab tuaj yeem ua lub luag haujlwm tseem ceeb hauv qhov no. 2. Qhia qhov tshiab thiab nce...Nyeem ntxiv
