陶瓷-活性炭为载体的催化剂CWAO处理再生胶废水

Catalytic wet air oxidation(CWAO) of rubber-regeneration wastewater with ceramic-active carbon as support of catalysts

在多孔陶瓷球上涂覆酚醛树脂制备得到陶瓷-炭。在优选条件下,陶瓷-炭材料含炭量高(～5.3wt.%),其中炭材料孔容和比表面积分别为0.276cm3/g和471m2/g。陶瓷-炭材料化学活化后(KC-130),含炭量为4.73wt.%,其中活性炭材料孔容和比表面积分别增加到0.71cm3/g和1180m2/g。将陶瓷-活性炭浸渍在RuCl3溶液中,制备得到Ru/KC催化剂。催化剂活性顺序为:Ru/KC-130>Ru/KC-100>Ru/KC-70>KC-130。为期30天的催化湿式氧化处理再生胶废水实验中,Ru/KC-130催化剂表现出良好的活性与稳定性,COD去除率为91.8%。

Ceramic-carbon was prepared by coating porous ceramic spheres with phenolic resin.Under optimal conditions,the material which was prepared exhibited high carbon percentage（~5.3 wt.%） with total pore volume of 0.276 cm3/g and specific surface area of 471 m2/g（carbon in the ceramic-carbon）,respectively.By means of chemical activation（KC-130）,the characterization of active carbon（AC） increased to 0.71 cm3/g and 1180 m2/g（carbon percentage： 4.73 wt.%）,respectively.Ceramic-active carbon supported ruthenium catalysts were prepared by using the RuCl3 solution impregnation onto these supports.The catalytic activity varied according to the following order： Ru/KC-130〉 Ru/KC-100〉Ru/KC-70〉 KC-130.It was found that Ru/KC-130 catalyst displaied the highest activity and stability in CWAO of rubber-regeneration wastewater during 30days,chemical oxygen demand（COD） removal was about 91.8%.