Perhydrol rau dej: zoo thiab qhov tsis zoo

Ua ntej yuav koom perhydrol rau pas dej da, cia peb nco ntsoov lub tsev kawm ntawv cov ntaub ntawv kawm nyob rau hauv Science News for KIDS. Hydrogen peroxide (los yog H2O2, los yog perhydrol) koom xwb ib tug neeg sawv cev peroxides. Kua tov, tsis muaj kob, soluble nyob rau hauv alcohols, ethers, dej. Heev nyob rau hauv lub concentrate. Sam yog ib tug hnyav. Nyob rau hauv ib ob peb teev cov dej splits rau hauv O2 thiab H2O. Ntshiab peroxide yog ruaj khov. Raws li antibacterial neeg sawv cev los ntawm ib tug ib txwm mus redox tshua. Muaj ntau me ntsis txog cov lub Science News for KIDS ntawm cov neeg tsis ntseeg hais tias perhydrol rau dej feem ntau zoo. Yuav ua li cas tej yam tiag tiag? Kuv yuav tsum tau siv nws nrog ib tug saib kom nqa tawm tua ntawm cov dej nyob rau hauv koj lub pas dej ua ke? Sim kom to taub.

Tsis yog txhua txhua chaw tsim tshuaj paus yuav pom zoo kom siv cov perhydrol muag lawv tus da dej. Nws yog tiag tiag muaj peev xwm mus Tsau tshuaj rau cov, tab sis qhov kev txiav txim yog piv, tej zaum, nrog cov tawg. Nyob rau hauv lwm yam lus, yog hais tias tus kab mob ua ntau thiab lawv yuav raug puas tsuaj sai li sai tau, ces perhydrol pas dej ua ke yog zoo meej xwb. Nws tua cov kab mob, kuj pheej yig, ceev so. Tab sis tiv thaiv cov zoo tseem muaj loj drawbacks.

Firstly, cov nyhuv ntawm ib tug luv luv tshuaj, li ntawd, lub tua yuav tsum tau ua tsis tu ncua thiab feem ntau.

Secondly, ntxiv perhydrol nyob rau hauv lub pas dej ua ke, koj yuav tau tos tau kaum ob teev (yam tsawg kawg nkaus disintegration sij hawm) ua ntej da dej - nondecayed hydrogen peroxide heev txhoj puab heev ntawm organic teeb meem (qhuav tawv nqaij, nrog ib tug muaj zog concentration ntawm nplooj kub hnyiab).

Thirdly, qhov yuav tsum tau rau tshem tej paug yog tsis tsawg tshaj 50 g / m3. Thaum qis ntau ntawm kub yus, yeej yuav tsis, tab sis zoo, ib yam nkaus thiab. Puas muaj ib txoj kev tawm? Nws puv tawm muaj - perhydrol-37 rau cov pas dej da (37%). Cov kwv yees tau ib 1000 liters ntawm cov dej - 1.5 litres perhydrol. Muaj yog ib qho kev daws, thiab nrog ib tug muaj zog concentration - 50%, uas yog zoo dua siv nyob rau hauv loj lub pas dej. Retransmission ua yog yuav tsum tau nqa tawm ntawm ib tug dej turbidity.

Qhov no kev kho mob yog tsis haum rau pej xeem cov pas dej da vim hais tias, raws li twb tau hais, qhov ntev ntawm kev txiav txim yog heev me me vim yog lub ceev ceev expansion thiab re-O2 kev twb kev txuas. Tab sis rau tsev noj perhydrol haum rau ib txhia yog vim li cas yog zoo dua, piv txwv li, chlorine. Nws yoojyim tsis residue, tsis muaj tsw thiab, nyob rau hauv kev phem ntawm lub luv luv ntev, nrog rau txoj kev ntau npaum ib copes nrog lub chaw ua hauj lwm ntawm tshuaj tua kab mob.

Pa tebchaw tej zaum yuav nyob rau hauv daim ntawv ntawm cov ntsiav tshuaj los sis granules. Thaum raus rau hauv dej, lawv tam sim ntawd pib hnov mob. Cov tshuaj tiv thaiv tus nqi zog raws li catalysts, nyob rau lub pH yog txo.

Tsa lub tua kab mob nyhuv yuav perhydrol ua ke nrog rau lwm cov tshuaj mas siv (e.g., silver). Rau dosing yog qhov zoo tshaj plaws los mus siv tsis siv neeg dispensers. Nws yuav ua tau raws li tej yam yooj yim ntaus ntawv thiab cov newest qauv kab noj hniav tsis siv neeg tswj lub concentration thiab generating ntawm nws tus kheej qhov tsim nyog ntsuam.