无泡供氧固定床反应器催化氧化水中乙醇的研究  

Study on Catalytic Oxidation of Ethanol in Water Using Fixed-bed Reactor with Bubbleless Aeration

作　　者：尤宏[1] 王树涛[1] 金大瑞[1] 

机构地区：[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090

出　　处：《航天医学与医学工程》2014年第5期349-352,共4页Space Medicine & Medical Engineering

摘　　要：目的开发一种无泡供氧的催化氧化固定床反应器,在不产生气泡的情况下直接把氧气溶解到废水中,解决微重力条件下气液分离困难、气泡附着等问题。方法以疏水性微孔中空纤维膜为气液分离介质建立无泡供氧单元,以H2O2预处理活性炭载体,采用氯铂酸浸渍法制备Pt/C催化剂,组合建立无泡供氧固定床催化氧化反应器。结果当反应器内供氧压力控制在5 kPa、水力停留时间为20 min时,对乙醇的催化氧化降解率可达99%以上。结论 Pt/C催化剂对乙醇具有较好的催化氧化活性,对乙醇的去除率最高可达100%;无泡供氧催化氧化固定床反应器具有很好的应用前景。Objective To develop a fixed-bed catalytic oxidation reactor with bubbleless aeration,and the oxygen is dissolved into water without bubble. This technique can facilitate oxygen-water separation and avoid the attachment of bubble under microgravity condition. Methods A hydrophobic hollow fiber membrane was used as separation media. The Pt /AC catalyst was prepared by using chloroplatinic acid via impregnation method.The fixed-bed-catalytic oxidation reactor was built by integrating the above modules. Results The removal of ethanol in simulated wastewater achieved 99% by fixed-bed-catalytic oxidation when the oxygen pressure was kept at 5 kPa and the retention time was 20 min. Conclusion Pt /C catalyst has a good activity for ethanol removal in water and the maximal removal could reach up to nearly 100%. It indicates that the fixed-bed-catalytic oxidation reactor is a promising technique in condensate water treatment in space capsule.

关 键 词：无泡供氧 催化氧化 固定床反应器 冷凝水处理 乙醇 

分 类 号：R852.82[医药卫生—航空、航天与航海医学]