Cov txheej txheem adsorption ntawm activated carbon nyob rau hauv hluav taws xob cua sov raj yog exothermic

Cov txheej txheem adsorption ntawm activated carbon nyob rau hauv hluav taws xob cua sov raj yog exothermic

Tsim kom muaj ntau yam activated carbons nrog xaiv adsorption ntawm brightener decomposition khoom rau ntau yam brighteners yog ib tug tswv yim ua hauj lwm uas yuav tsum tau ua tiag tiag los ntawm cov departments. Qhov no tuaj yeem txo qhov poob ntawm cov khoom xyaw zoo hauv cov tshuaj plating thaum kho thiab txhim kho cov nyhuv kho.

Cov pa roj carbon activated yog cov khoom adsorbent uas muaj peev xwm adsorption rau ob qho tib si gaseous kua thiab cov khoom siv (adsorbates). Thaum lub adsorbate yog adsorbed los ntawm activated carbon, kuj tseem muaj cov txheej txheem thim rov qab ntawm adsorbate detachment los ntawm qhov chaw ntawm cov pa roj carbon activated - desorption, qhov twg adsorption thiab desorption tshwm sim yuav luag ib txhij. Thaum lub adsorption taw tes rau ntawm qhov chaw ntawm cov pa roj carbon activated yog tag nrho los ntawm cov adsorbate, nws ncav cuag adsorption saturation. Lub sijhawm no, tus nqi adsorption thiab desorption yog sib npaug, ncav cuag dynamic equilibrium. Tom qab lub adsorption ncav cuag saturation, txawm tias lub sij hawm adsorption txuas ntxiv, tus nqi adsorption tsis tuaj yeem nce ntxiv lawm.

Cov txheej txheem adsorption ntawm activated carbon yog exothermic. Nws yuav tsum tau hais tias nyob rau hauv qis kub, activated carbon adsorbs ib tug loj npaum li cas ntawm impurities. Txawm li cas los xij, hauv kev kho dav dav ntawm cov tshuaj electroplating, cua sov feem ntau yog siv los ua kom cov pa roj carbon activated yooj yim kom ntub thiab tawg. Qhov tseeb, feem ntau, qhov kub tsis tshua muaj txiaj ntsig zoo rau adsorption, thaum kub kub ceev desorption.

Thaum purifying cov tshuaj plating, tus nqi ntawm cov pa roj carbon activated yuav tsum tau txiav txim siab raws li qib ntawm cov organic impurity pollution. Rau cov organic impurities tsawg, tsuas yog xav tau txog 1g / L ntawm cov pa roj carbon activated; Ntau cov organic impurities xav tau 8g / L rau 1Og / L, lossis ntau dua; Feem ntau, 3g / L txog 5g / L tuaj yeem siv rau kev kho mob.

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