A novel use of nano-ceramic material to remove toxic organic pollutants in water by simultaneous separation and electrochemical oxidation

纳米陶瓷材料同时分离和电化学氧化去除水中有毒有机污染物的新用途

基本信息

批准号：
17201019
负责人：
OZAKI Hiroaki
金额：
$ 25.38万
依托单位：
Osaka Sangyo University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

项目摘要

Pharmaceuticals and personal care products (PPCPs), and perfluorochemicals (PFCs) as persistent organic pollutants (POPs) in water have raised substantial concern among the public and regulatory agencies recently. Therefore, effective treatment methods for the POPs contaminated water are needed to properly address the concern. Electrochemical oxidation of common PPCPs and PFCs, and simultaneous separation combined with electrochemical oxidation of the PPCPs in water using newly developed nano-ceramic porous electrodes respectively in laboratory batch and continuous experiments were investigated. The water permeable ceramic electrodes with good electrical conductivity were prepared using combustion synthesis method.The sixteen PPCPs were classified into three groups based on their degradations by electrochemical method: (a) easily degradable (Isopropylantipyrine, Diclofenac, Naproxen, Indomethacin, Triclosan and Gemfibrozil), (b) degradable in relatively longer time (Phenacetine, Clarit … More hromycin, Methoxsalen and Carbamazepine) and (c) difficult to degrade (Ibuprofen, Ketoprofen, Phenobarbital, Clofibric acid, Phenytoin and Fenoprofen). Two common PFCs, namely PFOA (Perfluorooctanoic acid) and PFOS (Perfluorooctane sulfonate), which are very resistant to biological and ordinary physicochemical methods, were degraded up to 84% and 99% respectively by the method.Moreover, a novel unit for simultaneous separation and electrochemical oxidation was designed using the nano-ceramic electrodes, and the unit was tested in continuous laboratory experiments for PPCPs removal. The PPCPs were continuously rejected by the system with almost the same efficiencies as observed in batch tests for electrochemical oxidation despite very short retention time for the combined process. About 20% of the PPCPs in feed water were adsorbed onto the porous ceramic medium indicating significance of adsorption on the rejections. The results indicated that the combined treatment method using the new ceramic material is very promising. Less

药品和个人护理产品（PPCP）和全氟化学物（PFC）作为水中的持久有机污染物（POP）最近在公共和监管机构中引起了实质性的关注。因此，需要针对流行水污染的有效治疗方法正确解决问题。共同PPCP和PFCS的电化学氧化以及同时分离在实验室批次中分别使用新开发的纳米陶瓷多孔电极在水中与PPCP的电化学氧化结合，并研究了连续实验。 The water permeable ceramic electrodes with good electrical conductivity were prepared using composition synthesis method.The sixteen PPCPs were classified into three groups based on their degradations by electrochemical method: (a) easily degradable (Isopropyllantipyrine, Diclofenac, Naproxen, Indomethacin, Triclosan and Gemfibrozil), (b) degradable in relative longer time （苯乙甲氨酸，克拉里特…更多的hromycin，Methodxsalen和carbamazepine）和（c）难以降解（布洛芬，酮替克，苯巴比妥，氯纤维酸，氯菲酸，苯妥英和fenoprofen）。两种常见的PFC，即PFOA（PFOA（全氟辛酸）和PFO（全氟辛烷磺酸盐），它们非常抵抗生物学和普通物理方法，分别通过该方法降解了84％和99％的方法。通过该方法，使用了同时分离和电动机分离的新型单位，并具有新颖的单位。在连续实验室实验中测试了单元以去除PPCP。 PPCP被系统连续拒绝，其效率几乎与在批处理测试中的电化学氧化目的地相同的效率非常短，因此在合并过程中的保留时间很短。将大约20％的PPCP吸附到多孔陶瓷培养基上，表明添加对排斥的显着性。结果表明，使用新陶瓷材料的合并治疗方法非常有前途。较少的