OICC PRESS Multi-response central composite design of the mineralization and removal of aniline by subcritical water oxidation method Volume 10 (2019) Issue 2, June 2019 2023 10 18 Multi-response central composite design of the mineralization and removal of aniline by subcritical water oxidation method https://doi.org/10.1007/s40090-019-0175-6 EN Erdal Yabalak Department of Chemistry, Faculty of Arts and Science, Mersin University, Çiftlikköy Campus, 33343, Mersin, Turkey 0000-0002-4009-4174 İpek Topaloğlu Department of Chemistry, Faculty of Arts and Science, Mersin University, Çiftlikköy Campus, 33343, Mersin, Turkey Ahmet Murat Gizir Department of Chemistry, Faculty of Arts and Science, Mersin University, Çiftlikköy Campus, 33343, Mersin, Turkey Journal Article 2023 10 18 Aniline is used by many industrial organizations and is released into the environment in high amounts and pollutes the water. Due to the damages to human health, there is a need for effective and environmentally friendly methods to remove this compound from the water. The aim of this work is to mineralize and remove aniline by investigating total organic carbon removal and aniline removal, respectively, via using the eco-friendly method, subcritical water oxidation and green oxidizing agent, H2O2. The effect of process variables such as temperature, treatment time and H2O2 concentration were evaluated. Total organic carbon removal of aniline was obtained as 92.73% in 80 min of treatment time and in the presence of 60 mM of H2O2 at 403 K. 99.21% of aniline removal was achieved based on the UV spectrophotometric analysis at these conditions. The response surface method was used to optimize the performed model and the effect of the above-mentioned parameters. The reliability of the method was provided by ANOVA.

OICC PRESS Dynamic simulation and control of two-series industrial reactors producing linear low-density polyethylene Volume 10 (2019) Issue 2, June 2019 2023 10 18 Dynamic simulation and control of two-series industrial reactors producing linear low-density polyethylene https://doi.org/10.1007/s40090-019-0177-4 EN Nooshin Moradi Kazerooni School of Chemical and Petroleum Engineering, Department of Chemical Engineering, Shiraz University, Shiraz, 71345, Iran Reza Eslamloueyan School of Chemical and Petroleum Engineering, Department of Chemical Engineering, Shiraz University, Shiraz, 71345, Iran Mehdi Biglarkhani School of Chemical and Petroleum Engineering, Department of Chemical Engineering, Shiraz University, Shiraz, 71345, Iran Journal Article 2023 10 18 One of the leading routes for producing polyolefins is through gas-phase catalytic fluidized bed reactors. In this study, the industrial gas-phase ethylene polymerization reactor series of Jam Petrochemical Company has been dynamically analyzed, modeled and controlled. The copolymerization of ethylene with 1-butene is defined on Zeigler–Natta catalyst, assuming a double active site mechanism. To serve this purpose, pseudo-kinetic rate constants and the method of moments have been employed. The proposed model is capable of predicting the unsteady-state behavior of each reactor in addition to the properties of the product such as melt flow index (MFI), dispersion index, and molecular weight distribution (MWD). The verification of the model has been conducted with plant data to prove the accuracy of the model-estimated MWD and MFI. The controllability of the process control configuration has been examined through analyzing the dynamic behavior of the process under conventional feedback PID controllers. It has been observed that the control structure delivers a convincing performance for disturbance rejection.

OICC PRESS Preparation and application of metal ion-doped CoMgAl-hydrotalcite visible-light-driven photocatalyst Volume 10 (2019) Issue 2, June 2019 2023 10 18 Preparation and application of metal ion-doped CoMgAl-hydrotalcite visible-light-driven photocatalyst https://doi.org/10.1007/s40090-019-0178-3 EN Ali Auwalu School of Metallurgy, Northeastern University, Shenyang, 110819, China Tong Linlin School of Metallurgy, Northeastern University, Shenyang, 110819, China Shamsu Ahmad Federal University Dutse, Dutse, PMB 7156, Jigawa State, Nigeria Yang Hongying School of Metallurgy, Northeastern University, Shenyang, 110819, China 0000-0002-5161-7444 Jin Zhenan School of Metallurgy, Northeastern University, Shenyang, 110819, China Yan Song School of Metallurgy, Northeastern University, Shenyang, 110819, China Journal Article 2023 10 18 Preparation and application of CoMgAl-hydrotalcites have been studied. In this paper CoMgAl-LDHs photocatalysts were prepared by co-precipitation. Various techniques such as UV–visible spectrometry (UV–vis), BET, differential thermal gravimetric analysis, scanning electron microscopy analysis and X-ray diffraction were used to investigate the catalytic activity, structure, and composition of the prepared samples. The photocatalysts were developed as layered double hydroxides (LDHs) due to their layered structure with OH−. In the paper, specific surface area, thermal stability, absorption of visible light, and layered structure (crystal phase) were characterized by nitrogen adsorption–desorption method, differential thermal gravimetric analysis, UV–vis methods and X-rays diffraction. The results indicated that CoMgAl-LDHs caused photocatalytic degradation of methyl orange, rhodamine talcum, and methylene blue. Initially 1 g/L of the photocatalyst was used to degrade 40 mg/L of methyl orange, it was observed that 85.7% of the methyl orange was degraded at an illumination time of 300 min. However, the degradation of rhodamine and methylene blue was not good and did not give better results as that of methyl orange.

OICC PRESS Inhibitory effect of Senecio anteuphorbium as green corrosion inhibitor for S300 steel Volume 10 (2019) Issue 2, June 2019 2023 10 18 Inhibitory effect of Senecio anteuphorbium as green corrosion inhibitor for S300 steel https://doi.org/10.1007/s40090-019-0179-2 EN R. Idouhli Laboratory of Physical Chemistry of Materials and Environment, Faculty of Science Semlalia, University Cadi Ayyad, BP 2390, Marrakech, Morocco 0000-0001-7064-2285 Y. Koumya Laboratory of Physical Chemistry of Materials and Environment, Faculty of Science Semlalia, University Cadi Ayyad, BP 2390, Marrakech, Morocco M. Khadiri Laboratory of Physical Chemistry of Materials and Environment, Faculty of Science Semlalia, University Cadi Ayyad, BP 2390, Marrakech, Morocco A. Aityoub Laboratory of Physical Chemistry of Materials and Environment, Faculty of Science Semlalia, University Cadi Ayyad, BP 2390, Marrakech, Morocco A. Abouelfida Laboratory of Physical Chemistry of Materials and Environment, Faculty of Science Semlalia, University Cadi Ayyad, BP 2390, Marrakech, Morocco A. Benyaich Laboratory of Physical Chemistry of Materials and Environment, Faculty of Science Semlalia, University Cadi Ayyad, BP 2390, Marrakech, Morocco Journal Article 2023 10 18 The present work proposes the study of the extract of Senecio anteuphorbium (SA) as green corrosion inhibitor. This inhibitory effect of SA extract on the corrosion of S300 steel in hydrochloric acid 1 M has been evaluated by using the potentiodynamic polarization and electrochemical impedance spectroscopy. From the outcome of the polarization curves, SA extract acts as mixed-type inhibitor. The inhibition efficiency increased with the extract concentration increase to achieve a maximum of 91% at 30 mg/L. The adsorption of the inhibitor on the steel surface follows Langmuir isotherm and the values of activation energy suggested that the adsorption of inhibitor is a physical–chemical adsorption. Kinetic parameters such as enthalpy, activation energy and entropy were determined and discussed. The surface morphology of steel was observed before and after adding inhibitor by Fourier transform infrared spectroscopy. The changes in contact angles identified the formation of the protective film. Scanning electron microscopy and energy-dispersive X-ray revealed the adsorption of the same organic compounds of the extract on the interface metal/solution.

OICC PRESS Amine contaminants removal using alginate clay hybrid composites and its effect on foaming Volume 10 (2019) Issue 2, June 2019 2023 10 18 Amine contaminants removal using alginate clay hybrid composites and its effect on foaming https://doi.org/10.1007/s40090-019-0180-9 EN Anjali Achazhiyath Edathil Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates Priyabrata Pal Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates 0000-0001-8190-2660 Fawzi Banat Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates Journal Article 2023 10 18 Heat stable salts such as total organic acids (TOA) and heavy metals are well known contaminants in the acid gas removal systems operating using alkanolamines such as methyldiethanolamine (MDEA, 50 wt%). Decontamination of TOA and heavy metals from lean MDEA always remain as a challenge to the gas industry, as accumulation of TOA deteriorates the solvent quality, weakens the absorption capacity and enhances foaming problems leading to huge loss of MDEA and presence of heavy metals results in corrosion and fouling of equipment. Equilibrium batch adsorption were carried out using calcium alginate clay hybrid composites (CAH) containing sepiolite and bentonite for assessing the sorption performance of TOA and heavy metals such as chromium and iron from industrial lean MDEA solutions. The physiochemical properties of the adsorbent were elucidated using SEM, EDX and FTIR analysis. The effects of operational parameters such as amount of sorbent, contact time and temperature on the sorption capacity were also investigated. Kinetics results indicated that the chemisorption nature. The pseudo-second order model gave the best fit. The adsorption efficiency increased with increasing the temperature. Adsorption followed type VI isotherm according to the IUPAC classification, with sorption taking place in different stages. Regeneration studies revealed that 4% CaCl2 acts as an effective eluting agent and no reduction in capacity was observed even after 3 cycles of regeneration. Foaming studies carried out with treated lean MDEA confirmed the reduction in foam of MDEA solutions owing to the effective removal of foam creators such as TOA from lean MDEA by CAH composites. A 15.8% reduction in TOA content was found to decrease the foam height by 37.5%. Thus, CAH composites containing bentonite and sepiolite are having the potential to reclaim industrial lean MDEA solutions.

OICC PRESS Synthesis and investigations of heterocyclic compounds as corrosion inhibitors for mild steel in hydrochloric acid Volume 10 (2019) Issue 2, June 2019 2023 10 18 Synthesis and investigations of heterocyclic compounds as corrosion inhibitors for mild steel in hydrochloric acid https://doi.org/10.1007/s40090-019-0181-8 EN Salima K. Ahmed Department of Chemistry, College of Science, University of Diyala, Baquba City, 32001, Diyala Governorate, Iraq Wassan B. Ali Department of Chemistry, College of Science, University of Diyala, Baquba City, 32001, Diyala Governorate, Iraq Anees A. Khadom Department of Chemical Engineering, College of Engineering, University of Diyala, Baquba City, 32001, Diyala Governorate, Iraq 0000-0003-2284-6325 Journal Article 2023 10 18 The corrosion inhibition of mild steel in 0.5 M hydrochloric acid by six synthesized heterocyclic compounds was studied using weight loss measurements. The inhibition efficiency exceeded 95%. The excellent inhibitor performance was attributed to the formation of protection adsorption films on the steel surface. The structures of compounds were confirmed by Fourier transform infrared and nuclear magnetic resonance analysis. The adsorption of inhibitor on steel surface followed the Langmuir adsorption isotherm. Quantum chemical calculations were also adopted to clarify the inhibition mechanism.

OICC PRESS Application of (polyaniline/zeolite X) composite as anticorrosion coating for energy recovery devices in RO desalination water plants Volume 10 (2019) Issue 2, June 2019 2023 10 18 Application of (polyaniline/zeolite X) composite as anticorrosion coating for energy recovery devices in RO desalination water plants https://doi.org/10.1007/s40090-019-0182-7 EN Ahmed H. Abdel Aziz Chemistry Department, Faculty of Science, Ain Shams University, Khalifa El-Maamon St., Abbasiya sq., Cairo, 11566, Egypt Tarek S. Jamil Water Pollution Control Department, National Research Center, 33 El Buhouth St., Dokki, Cairo, 12311, Egypt Marwa S. Shalaby Chemical Engineering and Pilot Plant Department, National Research Centre, 33 El Buhouth St., Dokki, Cairo, 12311, Egypt Ahmed M. Shaban Water Pollution Control Department, National Research Center, 33 El Buhouth St., Dokki, Cairo, 12311, Egypt Eglal R. Souaya Chemistry Department, Faculty of Science, Ain Shams University, Khalifa El-Maamon St., Abbasiya sq., Cairo, 11566, Egypt Nabil A. Abdel Ghany Electrochemistry and Corrosion Lab., Physical Chemistry Department, National Research Centre, 33 El Buhouth St., Dokki, Cairo, 12311, Egypt Journal Article 2023 10 18 Reverse osmosis desalination water plants have several operational issues such as corrosion in many areas like energy recovery devices that are accustomed to restore energy and scale back prices. Thus, there is a necessity to reduce the corrosion rate of the devices utilized in energy recovery. This study focuses on protection of some metals and alloys that are utilized in this industry by introducing a new anticorrosion coating. The new anticorrosion coating was formulated by the interaction of polyaniline and X-type zeolite that is employed as hosting material. Polyaniline was first formulated by conventional oxidation polymerization method of aniline in acidic medium at temperature below 5 °C by using ice bath. Then, ammonium persulphate was used as oxidizer. Numerous characterization techniques were used to demonstrate the encapsulation of polyaniline in X-type zeolite frames such as IR, UV–visible spectroscopy, scanning electron microscopy, transmission electron microscope, energy-dispersive X-ray and X-ray diffraction. The new anticorrosion coating was evaluated by using weight loss technique, Tafel polarization and electrochemical impedance spectroscopy; all of these techniques showed the effective anticorrosion properties of the prepared coating in which the corrosion rate from the polarization curves results, for all coated samples, was less than the bare ones as it recorded 2.403, 1.094, 23.48, 35.09 MPY for bare 304 and 316 stainless steel, Al and carbon steel, respectively, and 0.3132, 0.2733, 0.2506, 10.81 MPY for the coated samples. Corrosion results showed a noteworthy protection of the tested metals and alloys in saline water coated with the polyaniline/zeolite X.

OICC PRESS Thermal performance of a micro heat exchanger (MHE) working with zirconia-based nanofluids for industrial cooling Volume 10 (2019) Issue 2, June 2019 2023 10 18 Thermal performance of a micro heat exchanger (MHE) working with zirconia-based nanofluids for industrial cooling https://doi.org/10.1007/s40090-019-0183-6 EN V. Nikkhah School of Chemical Engineering, Semnan University, Semnan, Iran SH. Nakhjavani School of Engineering, University of Yazd, Yazd, Iran Journal Article 2023 10 18 An experimental investigation was performed with the view to assess the heat transfer characteristics of a water-based nanofluid in a micro heat exchanger employed to quench a high heat flux heater for industrial and microelectronic cooling applications. The experiments were conducted at heat fluxes 10–70 kW/m2 and for nanofluids at various mass concentrations of 0.1–0.3% and passing flow rates of 0.1–5 l/min. Thermo-physical properties of the nanofluid including thermal conductivity, heat capacity, density and viscosity of nanofluid were experimentally measured at 40 °C close to the temperature of the experiments. Results showed that the heat transfer coefficient and pressure drop were augmented by 40.1% and 67% at wt% = 0.3 compared to the base fluid, respectively. The enhancement in the heat transfer coefficient was associated with the improvement in the thermal conductivity of the base fluid together with the intensification of Brownian motion and thermo-phoresis effect. The increase in the pressure drop was also attributed to the increase in the viscosity of the working fluid which induces layer–layer frictional forces in the bulk of the coolant in micro heat exchanger.