The adsorption mechanism and inhibitive action of the Eucalyptus plant leaf extract (Eu) on the corrosion of mild steel in 0.5 M H2SO4 and 0.5 M H3PO4 solutions were investigated by potentiodynamic polarization curves measurements and electrochemical impedance spectroscopy technique. Potentiodynamic polarization curves revealed that the Eucalyptus leaf extract acts as a mixed type inhibitor in both […]
The micro-structural effects on the corrosion resistance of three classes of mild steels (A, B and C) suitable for galvanizing industry, according to their silicon, phosphorus content, grain number and size of carbides (Fe3C) in concentrated hydrochloride acid solution was investigated by a series of known techniques, such as potentiodynamic polarization curves, electrochemical impedance spectroscopy […]
Batch adsorbers were designed for the adsorption of the fabric dyes Basic Violet 16 (BV16) and Reactive Red 195 (RR195) on locally available low-cost natural adsorbents of Persian bentonite, vermicompost and Persian charred dolomite. The adsorption isotherm data were in agreement with the Langmuir isotherm model (R2 > 99%). Results showed that with increasing the adsorption capacity […]
Oil-absorbing resins containing cross-linked poly(butyl acrylate) (PBA) were synthesized via precipitation polymerization in an environment-friendly route using supercritical carbon dioxide as the reaction media. The PBA resins were then regenerated through subcritical CO2 extraction process. The PBA resins with macroporous structures, prepared at pressures ranging from 17.5 to 24.5 MPa, were characterized by field emission scanning […]
In contrast to physical failure of process systems, quantification of inherent system energy resilience has been carried out considering performance failure of process systems under this work. The inherent energy resilience for process systems can be conceptualized from the perspectives of material resilience (Guha, Environ Prog Sustain Energy, e13308, 2019). Correlations have been used to […]
Mesocellular foams (MCFs) silica was successfully synthesized using hydrothermal method. The mesoporous material was characterized by X-ray diffraction, infrared spectroscopy, low temperature nitrogen adsorption–desorption, scanning electron microscopy, transmission electron microscopy. The low temperature nitrogen adsorption–desorption results showed that the synthesized MCFs has a diameter of 12 nm. Transmission electron microscopy revealed that the MCFs synthesized had […]
Degradation of a Basic Blue 41 dye using Fenton reagent was examined at laboratory scale in batch experiments using Box–Behnken statistical experiment design. Dyestuff, hydrogen peroxide (H2O2) and ferrous ion (Fe2+) concentrations were selected as independent factors. On the other hand, color and chemical oxygen demand (COD) removal were considered as the response functions. The […]
In this investigation, attempts have been made to study the corrosion inhibition properties of three new triazepine carboxylate compounds for mild steel in 1.0 M hydrochloric acid medium. The evaluation was carried out using mass loss, electrochemical impedance spectroscopy and polarization curves measurement. Impedance diagrams and Bode plots for uninhibited and inhibited systems were analyzed using […]
The method of micro bubbles is widely applied in the fields of water and soil treatment. A novel treatment method of NO in flue gas through a gas–liquid two-phase system formed by micro bubbles is proposed in this study. The system depends on the generation of hydroxyl radicals. The NO removal performance of the micro […]
The aim of this study is to examine and evaluate several dye/amine systems as photoinitiators for photopolymerization of 2-hydroxyethyl acrylate (HEA) monomer under visible light conditions. For this purpose, a series of dye/amine photoinitiators were formed using methylene blue (MB) or acridine orange (AO) as photosensitizers, and triethanolamine (TEOA), ethyl 4-(dimethylamino) benzoate (EDMAB), trioctylamine (TOA), […]
