Catalytic wet oxidation of ferulic acid

被引：2

作者：

Jani, Harit ^{[1
]}

Bhargava, Suresh K. ^{[1
]}

Tardio, James ^{[1
]}

Akolekar, Deepak B. ^{[1
]}

Manh Hoang ^{[2
]}

机构：

[1] RMIT Univ, Sch Appl Sci Appl Chem Sci Engn & Technol Portfol, GPO Box 2476V, Melbourne, Vic 3001, Australia

[2] CSIRO Mfg & Mat Technol, Clayton, Vic 3169, Australia

来源：

INTERNATIONAL JOURNAL OF ENVIRONMENTAL TECHNOLOGY AND MANAGEMENT | 2008年 / 9卷 / 01期

关键词：

wet oxidation; WO; catalytic wet air oxidation; pulp and paper mill effluents; ferulic acid; transition metal catalysts; wastewater treatment; high-pressure reactor; organic removal;

D O I：

10.1504/IJETM.2008.017862

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Catalytic Wet Oxidation (CWO) of aqueous ferulic acid (a lignin model compound) was carried out under mild conditions (100- 150(circle)C, similar to 300 kPa P-O2). Significant removal of ferulic acid (in terms of Total Organic Carbon (TOC)) (81% at 100(circle)C and 95% at 150(circle)C after 2 hr) was obtained using a CuNiCe/Al2O3 catalyst. A considerable portion of this TOC was removed during the heat-up period prior to oxygen addition (40% at 100(circle)C and 62% at 150(circle)C). This was most likely due to oxidation of organics by the catalysts' lattice oxygen, catalytic decarboxylation or adsorption. No TOC removal occurred in the absence of the catalyst during the heat-up period at 150(circle)C. The catalytic mechanism in the presence of oxygen was also investigated using various techniques (FTIR, GC-MS and Electrospray-MS). Based on the data obtained an adsorption/desorption/oxidation mechanism is proposed.

引用

页码：87 / 96

页数：10

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