Journal of
Chemical Engineering and Materials Science

  • Abbreviation: J. Chem. Eng. Mater. Sci.
  • Language: English
  • ISSN: 2141-6605
  • DOI: 10.5897/JCEMS
  • Start Year: 2010

JCEMS Articles

October 2012

Synthesis and characterization of (Thallium-Tin) doped Bismuth based superconducting materials

  Doping with combinations of Tl0.3-xSnx in a certain concentration range enhances the zero resistivity temperature Tc(0) from 104 to 108K. Both high-Tc (2223) and Low-Tc (2212) phases were detected by the X-ray diffraction analysis. However the low-Tc phase is found to dominate over the high-Tc phase with the increase in Sn content. Critical temperatures were determined by the electrical resistivity...

Author(s):   Rashid Mahmood and Muhammad Javed Iqbal        

October 2012

Kinetic and thermodynamic studies on the adsorption behavior of Rhodamine B dye onto animal bone meal

  Removal of Rhodamine B from aquoeus media was achieved onto animal bone meal (ABM) as a new low cost adsorbent. The latter was characterized by Infra-Red and X-ray diffraction. The adsorption of Basic Red 46 occurred by studying the effect of adsorbent amount, dye concentration, contact time and temperature. The adsorption rate data were analyzed using the pseudo-first order and the pseudo...

Author(s):   Mohammadine El Haddad    

March 2012

Enhanced photoluminescence from ZnO/ZnS core-shell structure

  The effect of ZnS coating over ZnO core is discussed in this present report. Very simple two step wet chemical method was used for the fabrication of this core-shell structure. XRD and HRTEM data reveal the formation of good shell coating over the ZnO core. Photoluminescence spectra shows that emission intensity is at least four times higher when coated with ZnS compare to bare ZnO. Band gap is also...

Author(s):   Sarmila Dutta, Shibabrata Basak and Pijus Kanti Samanta        

March 2012

Chlorine adsorption kinetics of activated carbon from selected local raw materials

  Chlorine adsorption kinetics of activated carbons from Cattle bone, coconut-shell and wood as influenced by mode of activation (heat and acid) were studied using a commercial activated carbon (CAC) as control. Batch chlorine adsorption by each activated carbon was investigated by contacting with fixed amount of chlorine solution at 10, 15, 20, 25, and 30°C respectively at 10 min intervals. The residual...

Author(s):   Yusufu, Mohammed I., Ariahu, C. C., Nkpa, N. N. and Igbabul, B. D.        

February 2012

A kinetic and mechanistic study on the oxidation of arginine and lysine by hexacyanoferrate (III) catalysed by iridium (III) in aqueous alkaline medium

  The kinetics of Ir (III) catalysed oxidation of some amino acids like arginine and lysine by hexacyanoferrate (abbreviated as HCF) (III) ions in aqueous alkaline medium at constant ionic strength 0.5 mol dm-3 and temperature 35ºC has been studied spectrophotometrically. The reactions exhibit 2:1 stoichiometry and follow first order kinetics in [HCF (III)] and [alkali]. The dependence of the rate on...

Author(s):   Anjali Goel and Ruchi Sharma        

February 2012

Biosorption of copper(II) and lead(II) ions from aqueous solutions by modified loquat (Eriobotrya japonica) leaves (MLL)

  A modified loquat leaves (MLL) for the removal of copper(II) and lead(II) ions from aqueous solutions has been investigated. The biosorption of copper(II) and lead(II) ions was found to be dependent on solution pH, initial metal ion concentrations, biosorbent dose, contact time, and temperature. The experimental equilibrium biosorption data were analyzed by three widely used two-parameters; Langmuir,...

Author(s):   Akl M. Awwad and Nidà M. Salem        

November 2011

A simplified cost-effective biosand filter (BSFZ) for removal of chemical contaminants from water

  A study aimed at designing, constructing and evaluating a cost-effective biosand filter was undertaken. The biosand filter was modified with the addition of zeolites (clinoptilolite). The zeolites formed the largest part of the filter media which comprised of four layers. The complete filter had six zones which played a role during the filtration process. Filtration was done for 3 h to mimic water filtration...

Author(s): Themba O. Mahlangu, Lizzy Mpenyana-Monyatsi, Maggie N. B. Momba and Bhekie B. Mamba        

  • Article Number: AF2583E2216

November 2011

Emissions control catalysts: Links between Fecralloy preoxidation and coating adherence Stephen A. Adegbite

  Tightening emissions legislation for vehicles across the world has caused the use of monolith catalysts in automobile emission control to become ubiquitous. In this study, the physiochemical transformations caused by thermal pre-oxidation of the surface of Fecralloy® foil, an integral component of emissions control catalysts, have been studied to assess their role on coating film adherence. The...

Author(s): Stephen A. Adegbite    

  • Article Number: CC339C02233

October 2011

Factors controlling the structural properties of carbon nitride films deposited by electrochemical method

  Polycrystalline carbon nitride thin films were deposited on Si (100) substrates by electrolysis of methanol-urea solution at atmospheric pressure and low temperature. The effect of the process parameters, namely deposition time, concentration and applied voltage on growth and bonding state of carbon nitride (CNx) thin films was studied using Fourier transform infrared (FTIR) spectroscopy, grazing incidence...

Author(s):   M. A. Moharram, F. H. Abd El-kader, Kh. I. Grais, M. G. Khafagi and Fathia Mamdouh      

  • Article Number: 1134EE92143

October 2011

Tween 60 – amido black 10B – ascorbic acid system: Studies of photogalvanic effect and solar energy conversion

  Solar energy conversion and storage by use of photogalvanic cell was studied in Tween 60 – amido black – ascorbic acid system. Photogalvanic effect was studied in photogalvanic cell consisting of ascorbic acid as a reductant, Amido black 10B as photosensitizer and Tween 60 as surfactant in aqueous solution. The photopotential and photocurrent generated were 996.0 mV and 420 µA respectively....

Author(s):   K. R. Genwa and C. P. Sagar    

  • Article Number: 0E5E8722156

October 2011

Performance analysis of constricted tube ultrafiltration unit for production of food-grade protein concentrates from food wastes

Author(s):   C. M. Narayanan    

  • Article Number: DB2A16F2175

August 2011

Preparation and characterization of exfoliated nano-composite of polyvinyl acetate and montmorillonite

  To improve the chemical, physical, and mechanical properties of polyvinyl acetate (PVAc), montmorillonite (MMT) was added in the synthesis of PVAc in conventional lab conditions. The final product was studied mainly by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), static tensile, and the rheology was also investigated by the power-law function...

Author(s):   Hui-Wang Cui, and Guan-Ben Du,      

  • Article Number: 5C3A1BC2120

August 2011

Fracture behavior of cryogenically solidified aluminum-alloy reinforced with Nano-ZrO2 metal matrix composites (CNMMCs)

  Fracture behavior of LM-13 aluminum alloy reinforced with different wt.% of Nano-ZrO2particles, solidified under various shallow cryogenically cooled chills (at -80°C), cast using DMD (disintegrated melt deposition) technique followed by hot extrusion were investigated. The size of the particles dispersed varies from 50 to 80 nm and amount of addition varies from 3 to 15 wt.% in steps of 3 wt.%....

Author(s):   Joel Hemanth    

  • Article Number: C5C7C442109

July 2011

Design and simulation reconfigurable liquid crystal patch antennas on foam substrate

  In this article, the use of liquid crystal-based patch antenna is proposed. A first test device was, therefore, conceived in planar technology with a low-cost foam substrate. In order to have a reduced antenna structure, we have studied an antenna miniaturized by inserting slots. Moreover, the use of liquid crystal in the design of patch antennas allows adjustment of the resonance frequency. To benefit from...

Author(s):   S. Missaoui, A. Gharbi and M. Kaddour    

  • Article Number: F7AB3B32065

June 2011

Newly developed friction factor correlation for pipe flow and flow assurance

  The purpose of this research is to present petroleum and chemical engineers with a new, practical, and fundamental equation that accurately determines the friction losses in traditional and modern piping systems. The results of this study begin with a necessary mathematical and historical review of determining pipe friction factors under smooth and rough conditions. These formulas provided a base for a...

Author(s):   Ghanbari A., Farshad F. Fred and Rieke H. H.    

  • Article Number: 43BC5B11677

June 2011

Investigation of turbulence mixed convection in air filled enclosures

  Mixed convection heat transfer is a process where natural and forced convection happens simultaneously. The effect of temperature difference in natural convection and momentum difference results in mechanical ventilation or pressure difference that result in indoor and outdoor flow. When used in an optimum way, it is one of the newly subjects in HVAC industry which is a prominent example of mixed convection...

Author(s): Hamid Reza Goshayeshi and Mohammad Reza Safaiy

  • Article Number: 0670F8D1706

May 2011

CuO-CeO2 catalytic systems destined for CO removal synthesized by means of the Pechini method: An evaluation of the structures obtained

  In this work, catalytic systems based on CuO-CeO2 were synthesized by the Pechini method.  These catalytic systems were prepared without the need to perform a step of impregnation of active species as is often seen in works of catalyst preparation. In the synthesis procedure, the CuO-CeO2 catalytic systems were synthesized with 0.1 and 0.5 mol of CuO. The CuO-CeO2 catalytic systems were...

Author(s):    L. S. Neiva, H. M. C. Andrade and L. Gama      

  • Article Number: E939E1A1647

May 2011

Algorithm and computational complexity of biochemistry

  The modern science mainly treats the biochemical basis of sequencing in bio-macromolecules and processes in biochemistry. One can ask weather the language of biochemistry is the adequate scientific language to explain the phenomenon in that science. Is there maybe some other language, out of biochemistry, that determines how the biochemical processes will function and what the structure and organization of...

Author(s):   Lutvo Kurić  

  • Article Number: 448BB4E1656

April 2011

Optimization of Li-Zn ferrite synthesis parameters using the experimental design method

  The conventional synthesis of ferrites involves mixing and sintering powder oxides. However, high sintering temperature deteriorates electrical properties of ferrites due to the formation of Fe2+ ions. Using sintering aid and decreasing particle size are easy and economical methods to decrease the sintering temperature and at the same time improve electrical properties of ferrites. In this research, the...

Author(s): M. Kavanloui, B. Hashemi and E. Nourafkan

  • Article Number: 969F87E1602

April 2011

Equilibrium modeling for a dοwndraft biomass gasifier for cotton stalks biomass in comparison with experimental data

  Equilibrium modeling has been used to predict the composition of the fuel gas produced in a downdraft gasifier for cotton stalks biomass at 800°C with the moisture content from 0 to 30%. The calorific value of the fuel gas has been determined. The predicted values are in good agreement with the experimental data. The moisture content in the cotton stalks biomass and the variability in calorific value,...

Author(s):   Koroneos C. and Lykidou S.    

  • Article Number: 36C73921613

March 2011

Short review on the crystallization behavior of PET/clay nanocomposites

  In recent years, the area of polymer nanocomposites based on organically modified clay has attracted much interest in academia and industry because of their peculiar and fascinating properties. Nanomaterials are presently considered to be high potential filler material, with high aspect ratio and extremely large surface area. They improve mechanical and physical properties of polymers. Lighter, thinner,...

Author(s):   Ranjana Sharma, Himani Joshi and Purnima Jain    

  • Article Number: 46F40781558

March 2011

Purification of an industrial aluminum alloy by melt stirring during ohno continuous casting process

  With the purpose of upgrading the purity of a dilute industrial aluminum alloy during ohno continuous casting (OCC) process through the use of forced melt stirring; the critical stirring intensity required under a casting speed of 2 mm/min was numerically determined. The determined critical stirring intensity induces convective velocity magnitudes into the melt which are effective in transporting solutes from...

Author(s):   Simbarashe Fashu, Li Jianguo and Hu Qiao Dan    

  • Article Number: 7CAC8461570

February 2011

The estimation of the cooling tower height by modeling the water and air contact situation in cooling tower falling film

  Deterioration of the filling material in traditional cooling towers is of serious concern. In this study, cooling towers of Arvand and Boualisia Petrochemical plants in the South of Iran are used as the filling material. The size of the cooling towers and outlet conditions are measured in a real situation and compared with heat and mass transfer correlations by modeling the towers and then calculating the...

Author(s): Mortaza Gholizadeh and Mosen Momayyeza

  • Article Number: BCA40461500

February 2011

Corrosion inhibition and adsorption behavior of methionine on Mg- Al-Zn alloy

  Corrosion inhibition behavior of Mg-Al-Zn alloy was investigated by different electrochemical techniques in neutral solutions containing chloride ions at different concentrations. The corrosion rate was calculated in the absence and presence of methionine as an environmentally safe corrosion inhibitor using polarization and impedance techniques. The results reveal that methionine inhibits the corrosion...

Author(s):   Nadia H. Helal    

  • Article Number: 368AC651532

January 2011

Polyaniline based anticorrosive and anti-molding coating

  Polyaniline (PAni) was synthesized by miniemulsion polymerization. One coating solution of poly (epichlorohydrine-co-ethylene oxide) (ECO) and another of ECO and PAni mixture were prepared in a mixture of solvents and then applied on cast iron and stainless steel coupons using spin coating technique. The efficiency of these coatings to retard the environmental rust formation was studied as...

Author(s): Sambhu Bhadra, Nikhil K. Singha and Dipak Khastgir

  • Article Number: 1C3BEDC1450

January 2011

Modified exponentially weighted moving average (EWMA) control chart for an analytical process data

  This article introduces modified exponentially weighted moving average (modified EWMA) control chart. The modified EWMA control chart is very effective in detecting small and abrupt shifts in monitoring process mean. This chart is based on modified EWMA control chart statistic, which is a correction of EWMA chart statistic and it is free from inertia problem. The advantage of using modified EWMA chart is its...

Author(s):   Alpaben K. Patel and Jyoti Divecha    

  • Article Number: 466796E1469

September 2010

Application of statistical technique to the analysis of passivation of Al - Zn alloy systems in brine

  The high demand for light metals as engineering materials lies in their high strength - to - weight ratio with good corrosion resistance in diverse environments. Passivation phenomena in these materials especially Al - based binary alloys have well been documented. However, the present study which aims at using model equations to investigate the passivation trend in various compositions of duplex Al - Zn...

Author(s): E. Chinedu Ekuma, E. Ndubuisi Idenyi and O. Israel Owate

  • Article Number: CF8D3181384

September 2010

Electrochemical behaviour of some copper alloys in sodium chloride solutions containing different inorganic additives

  The corrosion behavior of Cu-Fe and Cu-Fe-Al was studied in NaCl solutions without and with different concentrations of some inorganic additives, Na2MoO4, K2Cr2O7, and KIO3. The measuring techniques used were, open-circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The potentiodynamic polarization measurements indicated that the corrosion current, Icorr, o;f...

Author(s): H. E. El-Feky, N. H. Helal and M. R. Negem

  • Article Number: 274F3201402

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