Biphasic oxidation reactions promoted by amphiphilic catalysts based on red mud residue

Fe/C and FeMo/C hybrid materials for the biphasic oxidation of fuel contaminants

“…Among these new methods, oxidative desulfurization (ODS) is considered to be one of the most promising methods for the deep desulfurization of fuel oil. [31][32][33][34][35] Hybrid materials are very interesting for biphasic reactions since they have an amphiphilic character, i.e. The ODS process has several advantages compared with the traditional HDS process, such as mild conditions (ambient pressure and relatively low temperatures) and high selectivity.…”

Removal of Sudan IV from a simulated biphasic oily wastewater by using lipophilic carbon adsorbents

“…The adsorption of S-IV was also studied in the above mentioned previous reports, being the materials left in contact with the substrate solutions until they reached the adsorption equilibrium. It was observed that less than 1% [29] and 5% [8] of S-IV removals were respectively obtained with Fe-Mo/Al 2 O 3 (in 3 h) and the red mud based catalyst (in 1 h). Thus, these S-IV adsorption removals are considerably lower than those achieved with PACNAUT in the present work.…”

“…Treatment of S-IV by the heterogeneous Fenton process [8,29], attained removals from 58 to 80% (in 1 h of reaction time) from an oily phase polluted with 500 mg•L OP −1 of dye contaminant mixture with water, using 4 g•L OP −1 of a red mud based catalyst [8] or 2 g•L OP −1 of a Fe-Mo/Al 2 O 3 catalyst (Fe 10% and Mo 1%) [29]. In the present work, we are significantly increasing the amount of S-IV removal (90% in 1 h) by adsorption on PACNAUT (2.5 g of PACNAUT adsorbent per litter of oil phase).…”

“…In this context, stricter legislation has been implemented all over the world to limit the S and N-contents in petroleum fuels. Due to this reason, new technologies to remove S and N-containing compounds from oily products are required [8].…”

Effect of gas composition and temperature on reduction characteristic in red mud-coal composite pellets

“…Using red mud has both environmental and economic significance [10][11][12]. During the last few decades, red mud has been applied for various purpose, such as adsorbent for water and gas treatment [13][14][15][16][17][18][19], catalyst for certain reactions [20][21][22][23][24][25], and material for building construction and ceramics [26][27][28]. At present, red mud is also used in metallurgy.…”