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Frequency: 12 issues per year
ISSN: 2250–3005 (online version)
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International Journal of Computational Engineering Research

(IJCER)

 

Articles

 

Research Article  open access
A Study on Biological Treatment of Bio-Diesel Industrial Effluent Using FBBR
Dr.G.V.R.Srinivasa Rao || K.Srinivasa Murty || J.Chiranjeevi
India
Paper Indexed : : 03.3005/0580105
International Journal of Computational Engineering Research, Volume 05 ~ Issue 08 (August 2015)

Abstract

The present study involves experimentation on the treatment of bio-diesel industrial effluent using a laboratory scale model of Fluidized Bed Bioreactor (FBBR) with three different bed materials viz., MBBR Plastic media, Pumice Stones, high density Foam material. The experiment mainly focuses on the removal of Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) from the bio-diesel industrial effluent. The experiment is conducted for a period over 2 to 3 weeks at daily intervals, till the reactor gets stabilized and a maximum and uniform rates of percent removal of BOD and COD are obtained. The experimental data is analyzed and the results are presented in suitable formats. From the Bio-kinetic study involving reaction rate kinetics and microbial growth kinetics it is observed that, the bio-kinetic reactions taking place in the reactor conform to First order rate of reactions and the Foam pieces are proved to be a good alternative material when compared with that of the Commercially available MBBR (plastic) media

Keywords: Bed material, Biological Oxygen Demand (BOD), Bio-diesel, Chemical Oxygen Demand (COD), Fluidized Bed Bio Reactors (FBBR), Microbial Growth Kinetics, Reaction rate kinetics.

Research Article  open access
Studying & Evaluating the Performance of Solar Box Cookers (Untracked)
Mohammed Hadi Ali
Iraq
Paper Indexed : : 03.3005/05806012
International Journal of Computational Engineering Research, Volume 05 ~ Issue 08 (August 2015)

Abstract

The primary aim of this study was to conduct the performance evaluation on solar cooker design. The secondary aim was to build and developing of a new and efficient solar cooker design. A direct solar box cooker (Untracked type) was tested in this study with low cost feature and low technology. The testing for the solar box cooker was conducted at the top roof of Material Engineering Department building. In this test, three water quantities (1.5, 1 and 0.5 kg) were used in order to find the effect of the mass quantity of cooking food on the temperature rise inside the solar cooker. The results showed that the attainable temperature reached a maximum cooking temperature of (81.6 oC) for water mass quantity of (1000 grams) with temperature difference between the cooking temperature and the ambient temperature of (61.5 oC). But a lower maximum temperature (81.7 oC) for (500 grams) the reason for that is due the lower solar intensity during the test of partially cloudy day. As a conclusion, it was found that as the solar intensity increases the cooking temperature increases too. The other factor which influences the cooking temperature is the cooking mass as the cooking mass increases the cooking temperature decreases. Although the cooking temperature increases but the standardized Power decreases, this is because the increasing in cooking temperature is not equalizing or go in parallel with the decreasing in cooking mass, thus it is preferable to use solar cooker for adequate cooking mass quantity to get a high merit or advantage solar cookers.

Keywords:

Research Article  open access
Frequency Identification Approach For Wiener Systems
Adil Brouri || Smail Slassi
Morocco
Paper Indexed : : 03.3005/058013016
International Journal of Computational Engineering Research, Volume 05 ~ Issue 08 (August 2015)

Abstract

Wiener systems identification is studied in presence of possibly infinite-order linear dynamics and static nonlinearity. The problem of identifying Wiener models is addressed in the presence of hard nonlinearity. This latter is not required to be invertible of arbitrary-shape. Moreover, the prior knowledge of the nonlinearity type, being e.g. saturation effect, dead zone or preload, is not required. Using sine excitations, and getting benefit from model plurality, the identification problem is presently dealt with by developing a two-stage frequency identification method.

Keywords:Wiener model, Hard nonlinearity, frequency identification.

Research Article  open access
Determination of the Optimal Process Conditions for the Acid Activation of Ngwo Clay in the Bleaching Of Palm Oil
S .O Egbuna || C. N Mbah || T. O Chime
Nigeria
Paper Indexed : : 03.3005/058017029
International Journal of Computational Engineering Research, Volume 05 ~ Issue 08 (August 2015)

Abstract

In this work, the optimal adsorption parameters for the adsorption of Carotenoid in the bleaching of palm oil was investigated. Ngwo clay, a local adsorbent obtained from Ngwo town in the South-Eastern province of Nigeria, was used in the study. The palm oil used was also obtained from a local market in Enugu in the same region. The purpose of the work was to develop a model to optimize the efficiency of a local adsorbent that will be cheap and environmentally friendly, for the removal of pigments during refining of vegetable oils. The clay was first, acid activated and characterized, and used in the investigation. Central Composite Design (CCD) package was used to optimize the effects of process parameters of Temperature, Time and Clay Dosage on the bleaching efficiency of Palm Oil. A linear model was predicted and optimized based on BBD. This gave bleaching time of 40min., Temperature of 99.83oC, and Clay dosage of 4%, at a predicted bleaching efficiency of 83%. The optimum conditions were validated to obtain an experimental value of 82.5% with 1.7% error condition.

Keywords:BBD, ANOVA, Ngwo Clay, Palm Oil , bleaching efficiency, Acid activation

Research Article  open access
Effects of Metakaolin Content on Fresh and Hardened Properties of Self Compacted Concrete
Sanjeev Kumar || Rinku Saini

India
Paper Indexed : : 03.3005/058030036
International Journal of Computational Engineering Research, Volume 05 ~ Issue 08 (August 2015)

Abstract

Self-compacting concrete (SCC) is an innovative concrete that does not requires vibration for placing and compaction. SCC has higher powder content and a lower coarse aggregate volume ratio as compared to normally vibrated concrete. If only cement is used in SCC, it becomes high costly, susceptible to be attack and produces much thermal crack. Therefore it is necessary to replace some of the cement by additives like Metakaolin to achieve an economical and durable concrete. Metakaolin (MK) is a pozzolanic material. It is a dehydroxylated form of the clay mineral kaolinite. It is obtained by calcination of kaolinitic clay at a temperature between 500°C and 800°C. Kaolin is a fine, white, clay mineral that has been traditionally used in the manufacture of porcelain. A SSC mix prepaid with the replacement of cement by metakaolin in different ratios (5%, 10%, 15% and 20%). Slump flow and V- Funnel time increase with increase in the percentage of metakaolin and mechanical properties of SCC like Compressive strength, split tensile strength and elastic modulus of SCC decreases with increases in percentage of metakaolin at the age of 7 days and 28 days but increases with increases in percentage of metakaolin at the age of 90 days.

Keywords:BBD, ANOVA, Ngwo Clay, Palm Oil , bleaching efficiency, Acid activation

Research Article  open access
Analysis of chromium presence and Corrosion Behaviour of Nickel Aluminium Bronze Alloy
Abhaya Kumar Baliarsingh || Bighnesh Sahu || Chandrabhanu Malla
India
Paper Indexed : : 03.3005/058013740
International Journal of Computational Engineering Research, Volume 05 ~ Issue 08 (August 2015)

Abstract

The issue of corrosion is a major problem on equipments failure and damage in industrial that would affect the safety and efficiency of the equipments. Especially, materials used in marine environments have to withstand corrosion and need more hardness to withstand corrosion. Nickel–aluminium bronze (NAB) alloys show good corrosion resistance under marine conditions. Therefore material requirements to withstand such a high corrosive environment are most important. Along with these, cost effectiveness also considered in the usage of material. Many papers gives the corrosion resistance of behavior of NAB alloys in sea water or 3.5M NaCl solution in detail manner. But the alternate material to NAB is not studied as copper is the material shows very high corrosion resistance in sea water. In order to enhance the properties of NAB alloy, chromium is added...

Keywords:NAB ALLOYS, HOT-EXTRUSION, ELECTRO-CHEMICAL CORROSION, ASTM B505M-14.

Research Article  open access
A Thermodynamic Analysis of Cooled Gas Turbine Cycle in Hot and Humid Climates
Manoj Ukamanal || Binayak Mishra || Mukesh Panigrahi
India
Paper Indexed : : 03.3005/058014151
International Journal of Computational Engineering Research, Volume 05 ~ Issue 08 (August 2015)

Abstract

The article investigates the effect of compressor pressure ratio, turbine inlet temperature and ambient temperature on the performance parameters of an air-cooled gas turbine cycle with evaporative cooling of inlet air. Air film cooling has been adopted as the cooling technique for gas turbine blades. The mass of coolant required for turbine blade cooling is calculated for a selected range of ambient conditions and found to vary with temperature drop achieved in the evaporator. The effect of ambient temperature on plant efficiency and plant specific work is computed at different TIT and rp,c and it was found that the rate of increase in these performance parameters are more pronounced at higher TIT and rp,c. The results indicate that a maximum temperature drop of 21 oC is achieved in the evaporator. The inlet cooling is found to increase the efficiency by 4.1% and specific work by 9.44%. The optimum plant performance is obtained at a TIT of 1500K and rp,c of 20 for all values of ambient temperature.

Keywords:Air-film blade cooling, Air-humidifier, Evaporative cooling, Gas turbine, Inlet-air cooling, Parametric analysis

Research Article  open access
Air Craft Gas Turbines: A Thermodynamic Analysis
Taraprasad Mohapatra || Deepak Kumar Hota || Manas Kumar Samantaray
India
Paper Indexed : : 03.3005/058015263
International Journal of Computational Engineering Research, Volume 05 ~ Issue 08 (August 2015)

Abstract

In the present paper the environmental impact of a gas-steam combined cycle, in terms of CO2 emissions has been supplemented with the energetic analysis of the cycle. The gas turbine based triple-pressure reheat combined cycle incorporates, vapor compression inlet air cooling and air-film turbine blade cooling, to study the improvement in plant performance and sustainability. A parametric study of the effect of compressor pressure ratio (rp,c), compressor inlet temperature (CIT), turbine inlet temperature (TIT), inlet temperature ratio (rIT), ambient relative humidity and ambient temperature on performance and sustainability has been carried out. The integration of inlet air cooling and gas turbine blade cooling results in a significant reduction in CO2 emission per unit plant output. The integration of vapor compression inlet air cooling to gas turbine based combined cycle, has been observed to improve the specific work by more than 10 %. The plant efficiency increases significantly with increase in TIT. For all values of TIT, there exists an optimum rp,c at which the plant efficiency is maximum. The cost of environmental impact due to CO2 emission reduces with increase in TIT and decrease in CIT..

Keywords:...

Research Article  open access
Automation in irrigation to retain the land fertility decreasingboth erosion & surface run off in terraceof hilly or mountainous terrain
Biswa Bihari Rath || Atul || Deepak Moharana
India
Paper Indexed : : 03.3005/058016467
International Journal of Computational Engineering Research, Volume 05 ~ Issue 08 (August 2015)

Abstract

Generally in mountainous hilly area, ground surface is slope in nature but for propare utilization of same for cultivation throughout the year ,it is highly essential to make that land into step like cut or terrace to generate flat surface successively all over the hill. This landscape terracing look like a step having flat surface for cultivate different crop on different seasons. This shape imparts to retain more water , reduce run off & soil erosion also. So in this contest it was decided to irrigate the terrace by automatic manner to full fill the demand of human being to cope with the climate change & to decrease pressure on land resource keeping in mind the present population growth.

Keywords:S- Sensor, SV- Solenoid valve

Research Article  open access
Streamflow Response to Climate Change in the Brahmani River Basin, India
Chitrabhanu Sahoo || P.Adaikkala kumar
India
Paper Indexed : : 03.3005/058016867
International Journal of Computational Engineering Research, Volume 05 ~ Issue 08 (August 2015)

Abstract

Climate change can significantly affect the water resources availability by resulting changes in hydrological cycle. Hydrologic models are usually used to predict the impacts of landuse and climate changes and to evaluate the management strate- gies. In this study, impacts of climate change on streamflow of the Brahmani River basin were assessed using Precipitation Runoff Modeling System (PRMS) run under the platform of Modular Modeling System (MMS). The plausible hypothetical scenar- ios of rainfall and temperature changes were used to assess the sensitivity of stream- flow to changed climatic condition. The PRMS model was calibrated and validated forthe study area. Model performance was evaluated by using joint plots of daily and monthly observed and simulated.......

Keywords:........