Catalytic wet air oxidation of phenol with functionalized carbon materials as catalysts: Reaction mechanism and pathway

Transport of phenol through polymer inclusion membrane with N,N-di(1-methylheptyl) acetamide as carriers from aqueous solution

“…Various techniques available for treatments of phenolic effluents can be subdivided into two main categories, the destruction and recovery [4]. For example, the biological treatments and oxidation with wet air can be classified as destruction [5][6][7], and the liquid-liquid extraction is one of the most common ways for phenol recovery [8,9]. Given the case that phenol is used in the production of many chemicals such as dyes, adhesives, germicides, and chemical intermediates.…”

Optimizing chemical oxygen demand removal from synthesized wastewater containing lignin by catalytic wet-air oxidation over CuO/Al2O3 catalysts

“…Thus, heterogeneous metal-oxide catalysts, such as CuO (Kim and Ihm 2007;Hua, Ma, and Zhang 2013), TiO 2 (Cervantes et al 2013;Pintar, Batista, and Tišler 2008), Graphene oxide , and ZrO 2 (Wei et al 2013) have recently been used. Of these catalysts, CuO is highly active in the decomposition of phenolic compounds, including phenol (Ayusheev et al 2014; A c c e p t e d M a n u s c r i p t 4 Domínguez et al 2014;Lefèvre et al 2011;Wang et al 2014;Yan, Jiang, and Zhang 2014;Yang et al 2014), dye (Ovejero et al 2013;Fu and Kyzas 2014) and chlorophenol (Wei et al 2013a;Zhou et al 2014;Lee, Lin, and Jou 2012). We previously found that 10 wt% CuO/AlR 2 ROR 3 R could catalyze the wet oxidation of aniline making possible high degradation to COR 2 R at temperatures ranging from 160 to 230°C under air pressure ranging from 5 to 10 bars for two hours (Sriprom et al 2014).…”

Catalytic wet oxidation of organic compounds over N-doped carbon nanotubes in batch and continuous operation

“…Catalytic wet oxidation (CWO) is one of the solutions to remove bio-refractory organic pollutants from industrial wastewaters when they have a very high carbon content [2]. In this process, the organic compounds are oxidized into intermediate products, or mineralized into CO 2 and H 2 O [3], in the presence of a catalyst, typically at temperatures between 130 and 250 ºC and pressures between 10 and 50 bar [4].…”

“…Carbon materials, such as activated carbons [17][18][19][20][21][22][23][24], carbon xerogels [18,25,26] and carbon nanotubes (CNTs) [1,3,[27][28][29][30][31] have already been successfully used as catalysts for the CWO of organic compounds. In particular, the application of CNTs as catalyst is interesting due to their thermal and mechanical properties, and non-porous nature (minimizing mass transfer resistances) [32,33].…”

“…The catalytic activity of these materials is related to their chemical and textural properties, which can be optimized with different treatments [28,31]. Most of the works published so far concluded that basic surface groups are the most beneficial for the reaction [1,27,28], while others described a positive influence of surface carboxylic acid groups [3,[29][30][31]. The positive role of S-containing groups has also been reported [28,34].…”