A novel catalytic process for degradation of bisphenol A from aqueous solutions: A synergistic effect of nano-Fe 3 O 4 @Alg-Fe on O 3 /H 2 O 2

Magnetic titanium/carbon nanotube nanocomposite catalyst for oxidative degradation of Bisphenol A from high saline polycarbonate plant effluent using catalytic wet peroxide oxidation

“…It is typically accepted that in AOPs such as CWPO the attack of HO % to the organic pollutant resulted in the degradation of organic matter to their intermediates by-products and that by prolonging the CWPO process, ring opening of the phenolic compounds, such as BPA, occurs leading to the formation of low molecular weight carboxylic acids. These intermediate by-products usually require long retention times to be further oxidized to produce H 2 O and CO 2 [1,4,12,[21][22][23]36]. On contrary, the low molecular weight carboxylic acids are the suitable substrate for biological treatment.…”

“…for decomposition of recalcitrant compounds. The advantages of AOPs can be summarized to the simplicity of the required equipment, the operation at mild conditions and the capability to degrade a wide range of organic pollutants to the extent of mineralization [11][12][13][14][15][16][17]. In this sense, catalytic wet peroxide oxidation (CWPO) is an AOP based on the transfer of electrons from an appropriate catalyst to hydrogen peroxide (H 2 O 2 ) molecules in order to accelerate its catalytic decomposition into hydroxide ions (OH − ) and hydroxyl radicals (HO % ) (E 0 = 2.73 V), as given in Eq.…”

Superparamagnetic Fe3O4@Alginate supported L‐arginine as a powerful hybrid inorganic–organic nanocatalyst for the one‐pot synthesis of pyrazole derivatives

“…Given these advantages, the use of such macromolecules, as a biomaterial for heterogeneous catalysts, is valuable. [26][27][28] In recent decades, substantial efforts have been devoted to the design of polymer-coated magnetic nanoparticles. [22,29] Iron oxide nanoparticles, due to their paramagnetic properties, as well as their unique surfaceto-volume ratio and their easy separation from the reaction mixture, have been extensively used as magnetic materials.…”

Enhanced degradation of Bisphenol A from high saline polycarbonate plant wastewater using wet air oxidation

“…Polycarbonate plant wastewaters (PCW) are a complex matrix which not only contain high levels of toxic recalcitrant organic compounds such as phenol, BPA, aromatic and aliphatic hydrocarbons, but also have considerable amounts of various kinds of inorganic dissolved salts, high salinity and inorganic chemicals (Ahmadi et al, 2017a;El-Naas et al, 2010;Madadi et al, 2016;Jorfi et al, 2017;Ahmadi et al, 2017b;Esmaeli et al, 2011). PCW are also characterized by high levels of persistent organic pollutants (POPs), salinity, toxicity and low biodegradability potential for micro-organisms (Umar et al, 2013;Kusvuran and Yildirim, 2013;Ahmadi et al, 2017a,b;Ahmadi et al, 2016). Therefore, in recent years, there are growing attempts to develop efficient degradation methods for the destruction of BPA in the contaminated waters and/or wastewaters.…”

“…Conventional biological degradation processes are not efficient for these recalcitrant organic substances, such as BPA in the PCW, due to the required long residence time as well as toxicity of these organic compounds for activated sludge and micro-organisms (Erjavec et al, 2013;Ahmadi et al, 2017c;Arena et al, 2015;Ahmadimoghaddam et al, 2010). In contrast, advanced oxidation processes (AOPs) have recently been proved to be highly efficient to degrade recalcitrant organic substances based on the capability to form of highly active reactive oxidizing free radicals such as hydroxyl (HO) and sulfate (SO 4 − ) radical species (Athalathil et al, 2015;Ahmadi et al, 2016;Garoma and Matsumoto, 2009;Moussavi et al, 2018;Reddy and Kim, 2015). Several types of AOPs have been applied for the decomposition of BPA, including Vacuum-Ultraviolet (VUV)/H 2 O 2 process (Moussavi et al, 2018), electrogenerated ferrous ion activated ozone, H 2 O 2 and persulfate system (Akbari et al, 2016), photochemical degradation process (Doong and Liao, 2017;Yuelai et al, 2017), Fenton and Fenton like process (Ahmadi et al, 2016;Yang et al, 2016;Park et al, 2017) and catalytic wet air oxidation process (Erjavec et al, 2013;Zhou et al, 2018).…”