椰殼活性炭吸附消除VOCs

摘要: 對一種椰殼活性炭對甲基丙烯酸甲酯的吸附消除行為進(jìn)行了研究，重點(diǎn)考察了甲基丙烯酸甲酯的濃度、流速和吸附溫度等條件以及水汽存在時對活性炭吸附行為的影響。結(jié)果表明，該顆?；钚蕴繉谆┧峒柞ビ辛己玫奈叫Ч?，甲基丙烯酸甲酯進(jìn)口濃度和進(jìn)氣量的改變均會影響吸附飽和時間，導(dǎo)致其增加或減少。通過變溫吸附實(shí)驗(yàn)確定降低環(huán)境溫度對其吸附有促進(jìn)作用。濕度為50%時吸附量相對干氣飽和吸附量影響較小，說明該活性炭抗水汽能力較好。經(jīng)多次重復(fù)再生實(shí)驗(yàn)，其飽和吸附量未見明顯下降。

中文摘要:

對一種椰殼活性炭對甲基丙烯酸甲酯的吸附消除行為進(jìn)行了研究，重點(diǎn)考察了甲基丙烯酸甲酯的濃度、流速和吸附溫度等條件以及水汽存在時對活性炭吸附行為的影響。結(jié)果表明，該顆?；钚蕴繉谆┧峒柞ビ辛己玫奈叫Ч?，甲基丙烯酸甲酯進(jìn)口濃度和進(jìn)氣量的改變均會影響吸附飽和時間，導(dǎo)致其增加或減少。通過變溫吸附實(shí)驗(yàn)確定降低環(huán)境溫度對其吸附有促進(jìn)作用。濕度為50%時吸附量相對干氣飽和吸附量影響較小，說明該活性炭抗水汽能力較好。經(jīng)多次重復(fù)再生實(shí)驗(yàn)，其飽和吸附量未見明顯下降。

英文摘要:

The adsorption of methyl methacrylate (MMA) on a coconut shell activated carbon (CSAC) was studied， and the effects of concentration， flow velocity， adsorption temperature and water vapor precondition which acted on the performance of VOCs adsorption were discussed. The results illustrated that the CSAC had a good capability of adsorbing MMA. With changing of MMA inlet concentration and quantity， the time of adsorption equilibrium would move forward or backward. Temperature swing adsorption experiment proved that reducing temperature would promote the adsorption performance of the CSAC. When the humidity was 50%， the adsorption behavior of the CSAC was not influenced obviousely， which indicated that the activated carbon had a good hydrophobicity. Coconut shell activated carbon was regenerated for many times， it still could remain its good capacity of adsorption.

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