吸附卤乙酸饱和的活性炭纤维再生研究

论文研究了微波法和碱法对吸附饱和卤乙酸的活性炭纤维（ACF）的再生。试验以二氯乙酸（DCAA）和三氯乙酸（TCAA）作为吸附质,比较了两种方法对在不同条件下吸附于ACF上的DCAA和TCAA的脱附效率和再生效率的影响。结果表明：在微波功率450W的条件下,吸附饱和的ACF具有较高的再生效率,对DCAA和TCAA的再生率分别为54.28%和51.05%。碱法再生显示高浓度的碱再生剂有利于卤乙酸的脱附,而低浓度的碱再生剂有利于再生效率的提高。当再生液浓度为1%时,ACF对DCAA和TCAA的再生率最佳,分别为75.75%和56.29%。

Study on the Regeneration of Activated Carbon Fibers Adsorbed with Haloacetic Acids

The regeneration of activated carbon fibers （ACF） adsorbed with haloacetic acids （HAAs） by alkali and microwave method were studied in this paper. DCAA and TCAA were used as adsorbates in the experiment, the effect of alkali and microwave method on the desorption and regeneration efficiency of ACF at different conditions was compared. The results showed that the effectiveness by microwave regeneration was very high at the condition of 450 W power. The regeneration efficiency of ACF to DACC and TACC could reach 54.28 % and 51.05 %, respectively. The results of regeneration by alkali method showed that higher desorption efficiency could be obtained in the strong alkali environment, and higher regeneration efficiency could exist in the weak alkali environment. The regeneration efficiency of ACF to DACC and TACC could reach 75.75 % and 56.29 %, respectively, when the concentration of regeneration liquid was 1%.