化工环保2018，Vol.38Issue(1)：40-45,6.DOI:10.3969/j.issn.1006-1878.2018.01.007
钙钛矿型催化剂催化湿式氧化处理煤气化废水纳滤浓缩液
Treatment of nanofiltration concentrate of coal gasification wastewater by catalytic wet oxidation with perovskite structure catalysts
摘要
Abstract
The Mn-doped perovskite structure catalysts LaFexMn1-xO3were prepared by sol-gel method and used as catalysts to treat nanofiltration concentrate of coal gasification wastewater by catalytic wet peroxide oxidation. The catalysts were characterized by XRD,SEM and FTIR. The characterization results showed that the catalysts had standard perovskite structure,and LaFe0.9Mn0.1O3had the better structure stability and larger specific surface area. The experimental results indicated that:LaFe0.9Mn0.1O3had the best catalytic activity and stability,and its catalytic activity was not significantly decreased after 5-time reusing;Under the optimum conditions of H2O2amount 3.0 g/L,n(H2O2):n(LaFe0.9Mn0.1O3)=12:1,reaction temperature 160 ℃,reaction pressure 1 MPa,concentrate pH 3 and reaction time 60 min,the removal rate of COD, UV254and TOC reached 80.9%,95.2% and 68.0%,respectively,BOD5/COD was increased from 0.02 to 0.40, indicating that the wastewater biodegradability was significantly improved.关键词
催化湿式过氧化氢氧化/复合金属氧化物/钙钛矿/纳滤浓缩液Key words
catalytic wet peroxide oxidation/composite metal oxide/perovskite/nanofiltration concentrate分类
资源环境引用本文复制引用
丁康,刘志英,许婧璐,于杨,陆曦,徐炎华..钙钛矿型催化剂催化湿式氧化处理煤气化废水纳滤浓缩液[J].化工环保,2018,38(1):40-45,6.基金项目
江苏省高校自然科学研究计划项目(16KJA610002) （16KJA610002）
山西省科技重大专项(MH2015-08). （MH2015-08）
