Showing papers in "Chemical Engineering Communications in 2018"
TL;DR: In this paper, a central composite design using response surface methodology was applied for the experimental design and optimization of fluoride adsorption on an activated carbon derived from calcium chloride-mo...
Abstract: A central composite design using response surface methodology was applied for the experimental design and optimization of fluoride adsorption on an activated carbon derived from calcium chloride-mo...
90 citations
TL;DR: In this paper, different polymers have been used as continuous phase for preparing selective membranes for gas separation, and some of these materials have been consolidated commercially and used as a continuous phase.
Abstract: Over the last decades, different polymers have been used as continuous phase for preparing selective membranes for gas separation. Today, some of these materials have been consolidated commercially...
84 citations
TL;DR: In this article, the removal of Congo Red (CR) azo dye by adsorption process using Amberlite IRA-400 resin was evaluated in both batch and fixed bed system.
Abstract: Removal of Congo Red (CR) azo dye by adsorption process using Amberlite IRA-400 resin was evaluated in both batch and fixed bed system. From the batch adsorption results, maximum loading efficiency (99.99%) of CR dye was obtained at the conditions pH 4.5, temp. 303 K, contact time 180 min., Amberlite IRA-400 dose 0.5 g. The isotherm study ascertained on favorability of adsorption process as the value of separation factor (KL = 0.88) and Freundlich constant (1/n = 0.96 < 1.0) obtained from Langmuir and Freundlich equations are rational, though, overall adsorption process showed best fit with Langmuir (R2 = 0.99) than Freundlich model (R2 = 0.97). The kinetic data studied at three different CR dye concentration (50, 75, 100 mg) and results were fitted with both pseudo-first-order and second-order model equations. The values of R2 obtained are of 0.95 and 0.99 for former and later one, respectively, ensuring on best fitting of pseudo-second-order kinetics and also suggesting about the chemisorptions ...
46 citations
TL;DR: In this article, a reinforcement with calcium carbonate (CaCO3) nanoparticles (3% by weight), in the size range of 30-60nm, was used to develop better tribological properties of polycarbonate.
Abstract: In an effort toward developing better tribological properties of polycarbonate (PC), a reinforcement with calcium carbonate (CaCO3) nanoparticles (3% by weight), in the size range of 30–60 nm, func...
42 citations
TL;DR: In this article, a base-catalyzed transesterification with mixed methanol/ethanol system was used to extract mixed fatty acid methyl/ethyl esters from waste fish oil.
Abstract: Biodiesel (mixed fatty acid methyl/ethyl esters) was prepared from waste fish oil through base-catalyzed transesterification with mixed methanol/ethanol system. Effect of methanol/ethanol (% v/v), ...
41 citations
TL;DR: In this article, a new adsorbent material based on the chemical modification of aqai stalk (AS) with hexadecyltrimethylammonium bromide (CTAB) was proposed, forming a new material called AS-CTAB.
Abstract: In this work, a new adsorbent material based on the chemical modification of aqai stalk (AS) with hexadecyltrimethylammonium bromide (CTAB) was proposed, forming a new material called AS-CTAB. The ...
40 citations
TL;DR: In this paper, sustainable biomass-derived carbon materials were produced by hydrothermal carbonization of corn stover that was followed by chemical activation with KOH, which was used for agricultural applications.
Abstract: Sustainable biomass-derived carbon materials were produced by hydrothermal carbonization of corn stover that was followed by chemical activation with KOH. The prepared carbon materials were used fo...
39 citations
TL;DR: In this article, the synthesis process of charcoal from saw dust by chemical activation with different chemical agents like phosphoric acid, zinc chloride, and ferrous sulfate heptahydrate is represented.
Abstract: The paper represents the synthesis process of charcoal from saw dust by chemical activation with different chemical agents like phosphoric acid, zinc chloride, and ferrous sulfate heptahydrate. The...
35 citations
TL;DR: In this article, a graphene aerogel-zirconium-metal organic framework (GA-Zr-MOF) was synthesized and used as a membrane in a solid-phase extraction device to remove hydroquinone after immobilization of laccase.
Abstract: A graphene aerogel-zirconium-metal organic framework (GA-Zr-MOF) was synthesized and used as a membrane in a solid-phase extraction device to remove hydroquinone after immobilization of laccase. Th...
31 citations
TL;DR: The effect of Fe2+, Mg2+, Ca2+, and Ni2+ ions on dark fermentative biohydrogen production was evaluated using suspended and immobilized cells of anaerobic mixed bacteria at different concentrations of 0, 50, 100, 300, 500, and 1,000 mg/L in batch operation.
Abstract: The effect of Fe2+, Mg2+, Ca2+, and Ni2+ ions on dark fermentative biohydrogen production was evaluated using suspended and immobilized cells of anaerobic mixed bacteria at different concentrations...
31 citations
TL;DR: In this paper, a statistical optimization of tartrazine dye removal process from aqueous solution by heterogeneous photo-Fenton process using Fe2O3-supported ZSM-5 catalyst was performed.
Abstract: A statistical optimization of tartrazine dye removal process from aqueous solution by heterogeneous photo–Fenton process using Fe2O3-supported ZSM-5 catalyst was performed. ZSM-5 support was prepar...
TL;DR: In this paper, the use of radiotracer in residence time distribution (RTD) studies in industrial as well as lab scale systems has been emphasized in industrial and lab-scale systems.
Abstract: Use of radiotracer in residence time distribution (RTD) studies in industrial as well as lab scale systems has been emphasized in this review. The advantages of radiotracer over conventional tracer...
TL;DR: The development of eco-friendly and nontoxic processes for the synthesis of nanoparticles is one of the most important discussed issues in nanotechnology science as mentioned in this paper, and the green synthesis process for nanoparticles can be found in this paper.
Abstract: The development of eco-friendly and nontoxic processes for the synthesis of nanoparticles is one of the most important discussed issues in nanotechnology science. This study reports the green synth...
TL;DR: The effect of added water and nicotine on electronic cigarette degradation production was examined and found to have no significant impact on solvent (PG or GL) degradation for the particular device used.
Abstract: In electronic cigarettes ("electronic nicotine delivery systems", ENDS), mixtures of propylene glycol (PG) and/or glycerol (GL; aka "vegetable glycerin", VG) with nicotine are vaporized to create a nicotine-containing aerosol. For a given composition, the temperature required to boil the liquid at 1 atmosphere must be at least somewhat greater than the boiling point (BP). The use of ENDS is increasing rapidly worldwide, yet the BP characteristics of the PG + GL system have been characterized as the mixtures; here we re-do this, but significantly, also study the effects of added water and nicotine. BP values at 1 atmosphere pressure were measured over the full binary composition range. Fits based on the Gibbs-Konovalov theorem provide BP as a function of composition (by mole-percent, by weight-percent, and by volume-percent). BPs of PG + GL mixtures were then tested in the presence of additives such as water (2.5 and 5 mol% added) and nicotine (3 mol%). Water was found to decrease the BP of PG + GL mixtures significantly at all compositions tested, and nicotine was found to decrease the BP of PG + GL mixtures containing ~75 GL: 25 PG (by moles) or more. The effect of added water (5, 10, and 15 mol% added) on electronic cigarette degradation production (some aldehydes and formaldehyde hemiacetals) was examined and found to have no significant impact on solvent (PG or GL) degradation for the particular device used.
TL;DR: In this paper, pyrolysis of used tires, UT, and natural rubber (Hevea brasiliensis), NR obtained from Nigerian NIG800 clonal rubber tree, was performed and the effects of process conditions on product yield w...
Abstract: The pyrolysis of used tires, UT, and natural rubber (Hevea brasiliensis), NR obtained from Nigerian NIG800 clonal rubber tree, was performed and the effects of process conditions on product yield w...
TL;DR: In this paper, chitosan was chemically modified with only diammonium phosphate (DAP) and DAP/EDTA (ethylenediaminetetraacetic acid) mixture for the removal of Pb(II) ions from aqueous solution.
Abstract: In this study, chitosan was chemically modified with only diammonium phosphate (DAP) and DAP/EDTA (ethylenediaminetetraacetic acid) mixture for the removal of Pb(II) ions from aqueous solution. Mod...
TL;DR: In this article, the effects of nanofluid inlet temperature (40-90°C), Reynolds number (12,000-30,000), particle concentration (0-1 vol%), and air velocity (0.25-0.
Abstract: This work presents experimental investigation on the effects of nanofluid inlet temperature (40–90°C), Reynolds number (12,000–30,000), particle concentration (0–1 vol.%), and air velocity (0.25–0....
TL;DR: In this article, the efficacy of 1-butyl-1-methylpiperidinium tetrafluoroborate (BMPTFB) in retarding St37 steel corrosion in HCl environment has been examined using potentiodynamic polarization (PDP), electrochemi...
Abstract: The efficacy of 1-butyl-1-methylpiperidinium tetrafluoroborate (BMPTFB) in retarding St37 steel corrosion in HCl environment has been examined using potentiodynamic polarization (PDP), electrochemi...
TL;DR: Tobacco hairy roots (THR) were used to evaluate its potential for the biosorption and removal of malachite green (MG) from aqueous solutions as discussed by the authors.
Abstract: Tobacco hairy roots (THR) were used to evaluate its potential for the biosorption and removal of malachite green (MG) from aqueous solutions. A 32 full factorial design was applied to study the eff...
TL;DR: Mature areca nut husk (MAH) extract was tested for its efficacy anticorrosive property at electrode-electrolyte interface through chemical and electrochemical techniques as mentioned in this paper.
Abstract: Mature areca nut husk (MAH) extract was tested for its efficacy anticorrosive property at electrode–electrolyte interface through chemical and electrochemical techniques. Results of weight loss stu...
TL;DR: In this article, a new and green alternative technique for the extraction of essential oil from citrus plant materials was proposed. But this technique was aimed at extracting essential oil only from citrus plants.
Abstract: Attention is presently drawn to the development of a new and green alternative technique for the extraction of essential oil from citrus plant materials. This study was aimed at the extracting esse...
TL;DR: In this paper, a small batch of methyl decanoate was synthesized by esterification reaction and used as a surrogate fuel for biodiesel, which is structurally similar to actual biodiesel.
Abstract: Methyl decanoate is used as a surrogate fuel. The surrogate fuels are structurally similar to actual biodiesel. We synthesized methyl decanoate in a small batch reactor by esterification reaction u...
TL;DR: In this paper, the authors examined the sorption performance of synthesized nanosized zeolite for the elimination of Cs+ and Sr2+ cations in a binary metal system.
Abstract: This study examined the sorption performance of synthesized nanosized zeolite for the elimination of Cs+ and Sr2+ cations in a binary metal system. The influence of pH, sorbent amount, temperature,...
TL;DR: In this paper, a bio-matter (Olive leaves extract) is deployed as a nature-inspired reducing agent for the synthesis of zero-valent iron nanoparticles (NPs).
Abstract: Zero-valent iron nanoparticles (NZVI-NPs) possess significantly high surface area and volume ratio, and this unique surface characteristic has enhanced reactivity to their adsorption potential. In this work, a bio-matter (Olive leaves extract) is deployed as a nature-inspired reducing agent for the synthesis of NZVI-NPs. The particle size of NZVI-NPs has been determined using particle sizer. The NZVI-NPs are characterized using analytical and morphological techniques such as ultraviolet − visible spectroscopy (UV − vis), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction spectroscopy (XRD), scanning electron microscope (SEM), Brunauer–Emmett–Teller (BET), and Fourier transform infrared (FTIR) spectroscopy. The average crystalline size of NZVI-NPs are around 30–60 nm while maximum adsorption is at 225 nm. XRD spectrum shows two distinctive diffraction peaks at 25.40° and 42.50° corresponding to lattice plane value indexed at (200) and (222) planes of faced centered cubic (FCC). At optimi...
TL;DR: In this paper, an activated carbon with high adsorption capacity was synthesized from walnut shell as a solid waste using different chemical reagents to mitigate chemical oxygen demand from municipal waste.
Abstract: An activated carbon with high adsorption capacity was synthesized from walnut shell as a solid waste using different chemical reagents. It was used to mitigate chemical oxygen demand from municipal...
TL;DR: Sequencing coagulation over ZnO micro/nanoflowers was assessed for Malachite Green (MG) dye removal and followed by the MG-containing textile wastewater treatment as discussed by the authors.
Abstract: Sequencing coagulation–photodegradation over ZnO micro/nanoflowers was assessed for Malachite Green (MG) dye removal and followed by the MG-containing textile wastewater treatment. The ZnO ...
TL;DR: The alginate in bead forms was used to immobilize Burkholderia cepacia lipase and the synthesis of banana flavor (isoamyl acetate) was performed in both the alcohol per acid and acid per alcohol excesses.
Abstract: The alginate in bead forms was used to immobilize Burkholderia cepacia lipase. The microencapsulation technique for lipase entrapment was a 2% (w/v) of sodium alginate concentration prepared by ion...
TL;DR: In this paper, the COSMO-RS model was used to screen potential ionic liquids for the separation of aqueous azeotropic mixtures 1-propanol + water and 2-prolpol+ water.
Abstract: The COSMO-RS model was used to screen potential ionic liquids for the separation of aqueous azeotropic mixtures 1-propanol + water and 2-propanol + water. A combination of 22 cations (involving imi...
TL;DR: In this article, a simple and surfactant-free solvothermal route was used to synthesize Neodymium-doped ZnO nanorods (Nd/ZNRs).
Abstract: Neodymium-doped ZnO nanorods (Nd/ZNRs) were prepared for the first time by a simple and surfactant-free solvothermal route. The synthesized samples were characterized using different instrumental t...
TL;DR: In this paper, the adsorption capacity of Iranian Luffa cylindrica as a natural lignocellulosic adsorbent for biosorption of methylene blue (MB) using a fixed-bed column was investigated.
Abstract: This study aimed to investigate the adsorption capacity of Iranian Luffa cylindrica as a natural lignocellulosic adsorbent for biosorption of methylene blue (MB) using a fixed-bed column. T...