International Journal of Industrial Chemistry (IJIC)Electrochemically assisted photocatalytic removal of m-cresol using TiO2 thin film-modified carbon sheet photoelectrodeVolume 9 (2018), IJICIssue 3, September 201820231117Electrochemically assisted photocatalytic removal of m-cresol using TiO2 thin film-modified carbon sheet photoelectrodehttps://doi.org/10.1007/s40090-018-0158-zENEbrahimZareiDepartment of Basic Sciences, Farhangian University, Tehran, IranJournal Article20231117In this study, removal of m-cresol has been performed using photoeletrocatalysis technique at the surface of titanium dioxide (TiO2) thin film-modified carbon sheet photoelectrode. A biased potential was applied across this photoelectrode illuminated by UV light to investigate the feasibility of an electrochemically assisted photocatalytic process in this degradation. For preparation of this photoelectrode, the photocatalytically active TiO2 thin film was covered on the carbon sheet by dip coating technique using economically accessible TiO2 powder (Degussa P25). It was found that the m-cresol could be degraded more efficiently by this photoelectrocatalytic process than the degradation obtained by photocatalytic oxidation or by electrochemical oxidation or alone. The effect of various parameters, such as m-cresol concentration, pH and applied potential on the photoelectrocatalytic degradation of m-cresol was studied and discussed.International Journal of Industrial Chemistry (IJIC)Investigation of activated carbon obtained from the liquid products of pyrolysis in sunflower oil bleaching processVolume 9 (2018), IJICIssue 3, September 201820231117Investigation of activated carbon obtained from the liquid products of pyrolysis in sunflower oil bleaching processhttps://doi.org/10.1007/s40090-018-0156-1ENN.G. GuliyevInstitute of Petrochemical Processes Named After, Academician Yu.H.Mamedaliyev, Baku, AzerbaijanH.J. IbrahimovInstitute of Petrochemical Processes Named After, Academician Yu.H.Mamedaliyev, Baku, AzerbaijanJ.A. AlekperovInstitute of Petrochemical Processes Named After, Academician Yu.H.Mamedaliyev, Baku, AzerbaijanF.A. AmirovInstitute of Petrochemical Processes Named After, Academician Yu.H.Mamedaliyev, Baku, AzerbaijanZ.M. IbrahimovaInstitute of Petrochemical Processes Named After, Academician Yu.H.Mamedaliyev, Baku, AzerbaijanJournal Article20231117Decolourization process of neutralized sunflower oil was carried out with activated carbon products obtained from pyrolysis liquid products. The effect of parameters such as time, temperature, moisture and dosage on bleaching sunflower oil was investigated. It was found that activated carbon samples are an effective adsorbent for decolourization process of sunflower oil. It was determined that the ability of adsorption of the activated carbon samples at 20 °C temperature is higher than that of the bleaching earth which is used for this purpose. The analysis results directly prove that activated carbons remove the unwanted pigments and residues from sunflower oil. Moreover, activated carbon sample A2 has a more positive effect on pigment removal than other activated carbon samples (A1 and A3). 1% of activated carbon sample A2, 0.01% sunflower oil moisture, 20 °C temperature and 30 min contact time are optimal values in a sunflower oil bleaching process. Therefore, these activated carbon samples can be used to bleach sunflower oil instead of bleaching earth.International Journal of Industrial Chemistry (IJIC)Preparation and evaluation of the influence of modified fiber flour wood on the properties of the fresh condition of cement-based mortarsVolume 9 (2018), IJICIssue 3, September 201820231117Preparation and evaluation of the influence of modified fiber flour wood on the properties of the fresh condition of cement-based mortarshttps://doi.org/10.1007/s40090-018-0155-2ENAloulouFadhelLabEM-LR11ES34-Laboratory of Energy and Materials, University of Sousse, Sousse, TunisiaAlilaSabrineLMSE-Laboratoire Sciences DES Matériaux Et Environnement, University of Sfax, Sfax, TunisiaJournal Article20231117Wood fibers were used as fillers in the partial cement matrix by replacing the cement to a content of 1% by weight of cement. The effect of wood fibers on porosity and compressive strength has been studied. The results obtained show an improvement in the compressive strength of more than 40% with 1% by weight of wood fibers. The addition of wood fibers shows a good pore reduction, and the best result was obtained with the emulsion of a mixture incorporating 1% by weight of wood fibers in the presence of an anionic surfactant (SDBS). The degree of hydration of the cement increases with the wood fibers. This property was confirmed by Fourier transform infrared spectroscopy. These analyzes revealed that the presence of wood fibers generates and promotes the hydration of the cement, producing more calcium silicate gel and portlandite, which affects the compressive strength which gives a strong improvement.International Journal of Industrial Chemistry (IJIC)A comparative study on the inhibitive effect of Crataegus oxyacantha and Prunus avium plant leaf extracts on the corrosion of mild steel in hydrochloric acid solutionVolume 9 (2018), IJICIssue 3, September 201820231117A comparative study on the inhibitive effect of Crataegus oxyacantha and Prunus avium plant leaf extracts on the corrosion of mild steel in hydrochloric acid solutionhttps://doi.org/10.1007/s40090-018-0154-3ENR.S. Al-MoghrabiDepartment of Chemistry, Faculty of Science, Beirut Arab University, Beirut, LebanonA.M. Abdel-GaberDepartment of Chemistry, Faculty of Science, Alexandria University, Ibrahimia, P.O. Box 426, Alexandria, 21321, Egypt
Department of Chemistry, Faculty of Science, Beirut Arab University, Beirut, LebanonH.T. RahalDepartment of Chemistry, Faculty of Science, Beirut Arab University, Beirut, LebanonJournal Article20231117The inhibitive action of plant leaf extracts, Crataegus oxyacantha (Hawthorn) and Prunus Avium (Sweet Cherry) on the corrosion of mild steel in 0.5 M HCl solution was investigated using open circuit potential-time measurements (OCP), potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. Functional groups of these plants’ leaf extracts and their absorption bands were identified by Fourier transform infrared spectroscopy (FTIR) and Ultra-Violet Spectrophotometer (UV), respectively. The leaf extracts showed good inhibition efficiency in hydrochloric acid solution. Potentiodynamic polarization curves revealed that Crataegus oxyacantha and Purnus Avium plants leaves extracts acted as mixed type inhibitors. Theoretical fitting of different isotherms, Langmuir, Florry–Huggins and the kinetic–thermodynamic models was tested to describe the mode of inhibitors’ adsorption on mild steel surface. UV spectra proved that the inhibiting action takes place through simple physical adsorption of the extracts molecules on mild steel surface.International Journal of Industrial Chemistry (IJIC)Application of response surface methodology in the degradation of Reactive Blue 19 using H2O2/MgO nanoparticles advanced oxidation processVolume 9 (2018), IJICIssue 3, September 201820231117Application of response surface methodology in the degradation of Reactive Blue 19 using H2O2/MgO nanoparticles advanced oxidation processhttps://doi.org/10.1007/s40090-018-0153-4ENShahinAhmadiDepartment of Environmental Health, Zabol University of Medical Sciences, Zabol, IranLeiliMohammadiPromotion Research Center, Zahedan University of Medical Sciences, Zahedan, IranChinenyeAdaobi IgwegbeDepartment of Chemical Engineering, Nnamdi Azikiwe University, Awka, NigeriaSomayehRahdarDepartment of Environmental Health, Zabol University of Medical Sciences, Zabol, IranArturMarek BanachDepartment of Biochemistry and Environmental Chemistry, Institute of Biotechnology, The John Paul II Catholic University of Lublin, Konstantynόw 1I Str, 20-708, Lublin, PolandJournal Article20231117The release of dye containing effluent is a great threat to the world today. The purpose of this study is to optimize the removal of Reactive Blue 19 (RB19) dye from aqueous solutions using advanced oxidation process (AOP). Magnesium oxide nanoparticles (MgO NPs) and hydrogen peroxide (H2O2) were used as the catalyst and oxidizer, respectively. Central composite design (CCD) based on response surface methodology (RSM) was applied for optimization of the AOP process. The effects of pH (3–7), molar H2O2/MgO NPs ratio (1–3), initial concentration of RB19 (20–80 mg/L), and contact time (30–90 min) were investigated on the oxidation process. The CCD was applied to determine the interactive effects of the process parameters and their optimum conditions. One-way analysis of variance (ANOVA) was applied for statistical data analysis. A quadratic model was generated by the CCD to represent the AOP on RB19 degradation. The experimental values obtained for percentage RB19 decolorization were found to be very close to the predicted response values. Based on the design, optimum conditions of pH 3, contact time of 60 min, RB19 concentration of 80 mg/L and H2O2/MgO NPs molar ratio of 3 were obtained which resulted in 93.77% RB19 removal. High value for the coefficient of determination, R2 (0.912) and adjusted R2 (0.805) showed that the removal of RB19 dye using AOP can be described by the RSM. The ANOVA results showed that the quadratic model developed from the RSM was statistically significant for RB19 decolorization. From the study, it could be concluded that the RSM can be a useful tool for optimization and moderation of the process parameters to maximize RB19 dye removal from aqueous solutions and the advanced H2O2/MgO NPs oxidation process.International Journal of Industrial Chemistry (IJIC)Phosphorous-based epoxy resin composition as an effective anticorrosive coating for steelVolume 9 (2018), IJICIssue 3, September 201820231117Phosphorous-based epoxy resin composition as an effective anticorrosive coating for steelhttps://doi.org/10.1007/s40090-018-0152-5ENO.DagdagLaboratory of Agroresources, Polymers and Process Engineering, Team of Macromolecular and Organic Chemistry, Department of Chemistry, Faculty of Science, Ibn Tofail University, BP 133, 14000, Kenitra, MoroccoA.El HarfiLaboratory of Agroresources, Polymers and Process Engineering, Team of Macromolecular and Organic Chemistry, Department of Chemistry, Faculty of Science, Ibn Tofail University, BP 133, 14000, Kenitra, MoroccoA.EssamriLaboratory of Agroresources, Polymers and Process Engineering, Team of Macromolecular and Organic Chemistry, Department of Chemistry, Faculty of Science, Ibn Tofail University, BP 133, 14000, Kenitra, MoroccoM.El GouriTeam of Materials, Metallurgy and Process Engineering, ENSAM, University Moulay Ismail, B.P. 15290, Al Mansour, Meknes, MoroccoS.ChraibiTeam of Materials, Metallurgy and Process Engineering, ENSAM, University Moulay Ismail, B.P. 15290, Al Mansour, Meknes, MoroccoM.AssouagLaboratory of Materials, Electrochemistry and Environment, Department of Chemistry, Faculty of Sciences, Ibn Tofail University, Kenitra, MoroccoB.BenzidiaDepartment of Chemistry, An-Najah National University, P. O. Box 7, Nablus, PalestineO.HamedDepartment of Applied Bioscience, College of Life and Environment Science, Konkuk University, 120 11 Neungdong-ro, Gwangjin-gu, Seoul, 05029, South KoreaH.LgazDepartment of Chemistry, An-Najah National University, P. O. Box 7, Nablus, PalestineS.JodehDepartment of Chemistry, An-Najah National University, P. O. Box 7, Nablus, Palestine0000-0001-9074-0122Journal Article20231117Epoxy resin (ER) is an attractive material for metal protection against corrosion; it can form a strongly adhered film onto a metal surface through its multi coordination sites. In this study, an epoxy resin-based formulation was designed, prepared, and applied onto steel surface with and without a pigment. The anticorrosive formulation (ER–MDA–ZP) was prepared from the ER and the hardener 4,4′-methylene dianiline (MDA) in the presence of the anticorrosive pigment zinc phosphate (ZP). A second standard formulation (ER–MDA) was prepared without ZP. The epoxy and the hardener react to form a 3D cross-linked polymeric network with multicoordination sites (hydroxyl and amino groups) for metals. The characterization of the epoxy resin was performed using Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (1H and 31P NMR). Both samples exhibited excellent thermal properties as they subjected to thermal analysis using differential scanning calorimetry. The ER–MDA–ZP formulation showed a higher glass transition temperature (Tg) than ER–MDA. The coated steel specimens were immersed for 1 h in a 3 wt% NaCl solution and their anticorrosive properties were monitored by electrochemical impedance spectroscopy (EIS). The total resistance (Rt) values obtained by the EIS method for the ER–MDA and ER–MDA–ZP formulations were 21,383 Ω cm2 and 55,143 Ω cm2, respectively. The coated steel samples after the acid treatment were subjected to aging by exposing them to a UV light for 2000 h. The aging caused the Rt values to drop to 1621 Ω cm2 and 7264 Ω cm2, respectively. The results indicate the formation of a highly stable film of ER–MDA–ZP formulation on the steel surface that withstands an accelerated corrosive environment of 2000 h exposure to UV light and 1 h of immersion in a 3 wt% NaCl.International Journal of Industrial Chemistry (IJIC)Kinetic modeling of a heterogeneous Fenton-type oxidative treatment of complex industrial effluentVolume 9 (2018), IJICIssue 3, September 201820231117Kinetic modeling of a heterogeneous Fenton-type oxidative treatment of complex industrial effluenthttps://doi.org/10.1007/s40090-018-0151-6ENLauraCovinichPrograma de Celulosa Y Papel, Instituto de Materiales de Misiones, IMAM (UNaM-CONICET), Félix de Azara 1552, Posadas, ArgentinaFernandoFelissiaPrograma de Celulosa Y Papel, Instituto de Materiales de Misiones, IMAM (UNaM-CONICET), Félix de Azara 1552, Posadas, ArgentinaPaolaMassaDpto. de Ingeniería Química/Div. Catalizadores Y Superficies, INTEMA (CONICET-UNMdP), Juan B. Justo 4302, Mar Del Plata, ArgentinaRosaFenoglioDpto. de Ingeniería Química/Div. Catalizadores Y Superficies, INTEMA (CONICET-UNMdP), Juan B. Justo 4302, Mar Del Plata, ArgentinaMaríaC. AreaPrograma de Celulosa Y Papel, Instituto de Materiales de Misiones, IMAM (UNaM-CONICET), Félix de Azara 1552, Posadas, ArgentinaJournal Article20231117This work proposes a kinetic model for the reactions involved in the heterogeneous copper-based Fenton-type oxidation of mixed recalcitrant compounds in a real industrial effluent from the alkaline sulfite treatment of wood. This kind of treatment is unusual in this industry due to the complexity of the effluents and the high costs involved in total mineralization of the organic matter. Nevertheless, conversion of recalcitrant to degradable compounds and catalyst recovery can make the difference. The complexity of the effluent and the great number of compounds formed as intermediates, make extremely difficult the identification and quantification of the individual reactions that occur during oxidation. To solve this drawback TOC parameter was used as a representative measurement. To verify the level of TOC degradation produced by the heterogeneous catalysis reaction, experiences of homogeneous catalysis and adsorption were accomplished. The studied temperature range was 45–80 °C. A “two-step” kinetic model was applied to TOC reduction in heterogeneous and homogeneous oxidations, admitting two sequential steps of oxidation: a first fast stage (“seconds stage”) followed by a slow one (“minutes stages”). Kinetic constants were obtained for both processes and activation energies were also determined for the “minutes stage” step (33.17 kJ/mol and 15.13 kJ/mol, respectively). Homogeneous catalysis studies confirm mass transfer limitations in heterogeneous oxidations. Experiences of adsorption of organic matter on CuO/γ-Al2O3 catalyst demonstrated that this phenomenon is exothermic and cannot be neglected. The activation energy of adsorption was determined as 7.32 kJ/mol. Catalysts were characterized through SEM, EDS, XRD, FTIR, and TGA.International Journal of Industrial Chemistry (IJIC)The choice of precursors in the synthesizing of CuMnOx catalysts for maximizing CO oxidationVolume 9 (2018), IJICIssue 3, September 201820231117The choice of precursors in the synthesizing of CuMnOx catalysts for maximizing CO oxidationhttps://doi.org/10.1007/s40090-018-0150-7ENSubhashishDeyDepartment of Civil Engineering, IIT (BHU), Varanasi, IndiaGaneshChandra DhalDepartment of Civil Engineering, IIT (BHU), Varanasi, IndiaDevendraMohanDepartment of Civil Engineering, IIT (BHU), Varanasi, IndiaRamPrasadDepartment of Chemical Engineering and Technology, IIT (BHU), Varanasi, IndiaJournal Article20231117The hopcalite (CuMnOx) catalyst is a well-known catalyst for CO oxidation at a low temperature and it is synthesized by the co-precipitation method with different types of precursors. Activity of the CuMnOx catalysts for CO oxidation is strongly dependent upon the combination of precursors, ranking in order {Mn(Ac)2 + Cu(NO3)2} > {Mn(Ac)2 + Cu(Ac)2} > {Mn(NO3)2 + Cu(NO3)2} > {Mn(NO3)2 + Cu(AC)2}. All the precursors were precipitated by KMnO4 solution and the precursors mostly comprised of MnO2, Mn2O3 and CuO phases. Keeping the same precipitant while changing the precursors caused a change in the lattice oxygen mobility which influenced the CO oxidation activity. The calcination strategy of the precursors has great influence on the activity of resulting catalysts. The reactive calcination (RC) conditions produce multifarious phenomena of CO oxidation and the precursor decomposition in a single-step process. The activity order of the catalysts for CO oxidation was as follows: reactive calcination (RC) > flowing air > stagnant air. Therefore, we recommended that the RC route was the more appropriate calcination route for the production of highly active CuMnOx catalysts. All the catalysts were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, Brunauer–Emmett–Teller analysis, X-ray photoelectron spectroscopy and scanning electron microscopy technique. The influence of precursors on the structural properties and the catalytic activity of co-precipitation derived binary CuMnOx catalysts for CO oxidation has been investigated.