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| 造紙黑液中30%-35%左右為無機(jī)物，主要為NaOH、Na2SO4、Na2S、Na2SiO3、Na2CO3等，65%-70%為有機(jī)物，主要為木質(zhì)素，以及殘留的纖維素、半纖維素等。利用造紙黑液制備活性炭國內(nèi)外研究比較多，但都是利用造紙黑液經(jīng)酸析提取木質(zhì)素后，再制備活性炭。但是其制備工藝復(fù)雜，收率低，所制備的活性炭灰分高，應(yīng)用困難。從資源利用和黑液處理來說，最好是將黑液直接用于制備活性炭。本實驗直接將造紙黑液與椰殼渣混合，以造紙黑液中殘堿為活化劑，再補(bǔ)充一定量的活化劑KOH，制備活性炭。 |
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wypward(金幣+1):謝謝參與 2010-06-30 07:57:07
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