摘要
以工业废物铝灰、活性氧化铝和煤粉作为复合载体,预处理后采用浸渍法负载氧化铁作为活性组分,制备了低成本铁系铝灰高效催化剂。采用颗粒强度测试仪、扫描电子显微镜(SEM)、X射线衍射仪(XRD)和比表面积测试仪(BET)等对催化剂进行了表征,并针对苯胺和苯酚配水研究臭氧催化氧化去除COD的效果。结果显示,该催化剂载体原料铝灰∶活性氧化铝∶煤粉的质量比最优为48.5∶48.5∶3,氧化铁的含量为6%,其强度可达115 N,比表面积和孔容分别为172.50 m2/g和0.34 cm3/g;在初始pH为8、臭氧气体流量为0.4 L/min、臭氧投加量为40 mg/L、苯胺或苯酚配水水量为5 L、催化剂填充率为30%的条件下,苯胺和苯酚配水的COD去除率最高可分别达到81.3%和71.9%。该催化剂的制备成本较低,催化性能稳定,可达到利用废弃物资源实现以废治废的目的,具有较好的应用价值。
Using aluminum ash,activated alumina,and coal power as composite carriers,a low‑cost ferric‑based aluminum ash catalyst was prepared after these industrial wastes were pretreated and loaded with iron oxide(active component)using the impregnation method.The catalyst was characterized using particle strength tester,scanning electron microscope(SEM),X‑ray diffractometer(XRD),and brunauer‑emmett‑teller(BET),and the catalytic ozonation performance for removing COD from aniline and phenol wastewater was investigated.The optimal mass ratio of aluminum ash to activated alumina to coal powder was 48.5∶48.5∶3,with an iron oxide content of 6%.The resulting strength of the catalyst reached 115 N,while the specific surface area and pore capacity were 172.5 m2/g and 0.34 cm3/g,respectively.Under the initial conditions of pH 8,ozone gas flow of 0.4 L/min,ozone dosage of 40 mg/L,volume of aniline or phenol wastewater of 5 L,and catalyst filling rate of 30%,the maximum COD removal rates for aniline wastewater and phenol wastewater reached 81.3%and 71.9%,respectively.The catalyst had low preparation costs,stable catalytic performance,and effectively utilized waste resources for waste treatment,demonstrating significant application value.
作者
王冠平
孙琦
石伟
牛涛
刘晓静
李浙英
WANG Guan‑ping;SUN Qi;SHI Wei;NIU Tao;LIU Xiao‑jing;LI Zhe‑ying(Everbright Water<Shenzhen>Co.Ltd.,Shenzhen 518000,China;Everbright Water Technology Development<Nanjing>Co.Ltd.,Nanjing 211800,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2024年第11期81-88,共8页
China Water & Wastewater
关键词
铝灰
煤粉
铁系催化剂
浸渍法
臭氧催化氧化
aluminum ash
coal power
ferric catalyst
impregnation method
catalytic ozonation
