活性炭的改性条件及其对硫化氢吸附性能的影响

以工业活性炭为载体制备改性活性炭，对比研究了未改性活性炭，NaOH、Na2CO3、Fe(NO3)3、Cu(Ac)2改性活性炭及挂膜硫氧化细菌后活性炭在相同条件下对硫化氢穿透时间及吸附容量的影响。结果表明：在相同控制条件下，NaOH改性活性炭明显优于其它改性剂；不同梯度改性剂条件下，20% NaOH改性活性炭对硫化氢的吸附效果最好，吸附穿透容量为78.25 mg/g，穿透时间可以达到2000 min以上；不同改性剂挂膜硫氧化细菌后对硫化氢均有一定的处理效果，其中对已达到饱和吸附的NaOH改性活性炭挂膜后的再生效果可以达到100%以上，说明挂膜硫氧化细菌活性炭对硫化氢的处理具有很好的效果。

Activated carbon modification condition and its influence on the performance of the adsorption of hydrogen sulfide

The H2S adsorption breakthrough time and breakthrough capacity of industrial activated carbons which were untreated,modified by NaOH,Na2CO3,Fe(NO3)3,Cu(AC)2 impregnant respectively,and treated by oxidation sulfur bacteria biofilm were compared under the same condition.The results indicated that the activated carbon modified by NaOH was significantly better than any other modifier under the same condition.Compared with the modifier at different concentration of NaOH,the activated carbon modified by 20% NaOH had the best effect on the removal of hydrogen sulfide.The breakthrough time and the breakthrough capacity were 78.25 mg/g and 2000 min above respectively.After the oxidation sulfur bacteria biofilm was formed on the modified activated carbon,which had certain effect on the removal of hydrogen sulfide.The saturated activated carbon modified by NaOH can be regenerated by oxidation sulfur bacteria biofilm,and achieve 100% on the removal of hydrogen sulfide.The activated carbon treated by oxidation sulfur bacteria biofilm has a good effect on the removal of hydrogen sulfide.