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Full-Text Articles in Engineering
Optimizing The Sterilization Process Of Canned Food Using Temperature Distribution Studies, Ibrahim M. Ismail, Alaa Fahmy, Ahmed Azab, Magdy Abadir, Seif-Eddeen K. Fateen
Optimizing The Sterilization Process Of Canned Food Using Temperature Distribution Studies, Ibrahim M. Ismail, Alaa Fahmy, Ahmed Azab, Magdy Abadir, Seif-Eddeen K. Fateen
Seif-Eddeen K Fateen
The thermal processing of canned food is the most important step in the canning procedure. Retort operating procedures must ensure that uniform processing temperature is achieved and maintained throughout the locations of the canned containers during the process. In this study, temperature distribution tests have been used as a means of verifying the temperature uniformity around the containers. These studies were carried out in two Egyptian canning plants in horizontal water-immersion and water-spray retorts under fully loaded operating conditions. Time-temperature data gathered were used as a guidance tool in improving temperature distribution and in optimizing the process schedule.
Design, Optimization And Control Of An Alternative Process Based On Extractive Distillation For The Sweetening Of Natural Gas, Carlos E. Torres-Ortega, Juan Gabriel Segovia-Hernandez, Fernado I. Gomez-Castro, Salvador Hernandez, Adrian Bonilla-Petriciolet, Ben-Guang Rong, Massimiliano Errico
Design, Optimization And Control Of An Alternative Process Based On Extractive Distillation For The Sweetening Of Natural Gas, Carlos E. Torres-Ortega, Juan Gabriel Segovia-Hernandez, Fernado I. Gomez-Castro, Salvador Hernandez, Adrian Bonilla-Petriciolet, Ben-Guang Rong, Massimiliano Errico
Adrian Bonilla-Petriciolet
Alternative configurations based on cryogenic extractive distillation for the natural gas sweetening process were proposed and simulated by using Aspen Plus One 7.0 coupled to a multi-objective stochastic optimization procedure (Differential Evolution, DE). The evaluation of the performances of the proposed configurations was focused on the carbon dioxide-ethane azeotrope separation considering different liquefied hydrocarbon fractions as entrainers. The design alternatives were compared to the conventional chemical absorption system. The proposed sequences were simultaneously optimized by minimizing the Total Annual Cost (TAC) and maximizing the acid gas removal. Complementary studies regarding the theoretical control properties, thermodynamic efficiency and greenhouse gases generation …
Optimization And Modeling Of Extraction Of Solid Coconut Waste Oil, Abdul Aziz Abdul Raman
Optimization And Modeling Of Extraction Of Solid Coconut Waste Oil, Abdul Aziz Abdul Raman
Abdul Aziz Abdul Raman
Solid coconut waste was produced after coconut milk extraction process and may still contain up to 24 wt.% oil content. In this work, extraction of oil from coconut waste using batch and soxhlet extractor was studied. Effect of particle size diameter, type of solvent and solvent to solid ratio on the kinetic and thermodynamic parameters; entropy, enthalpy and free energy of extraction were investigated. The maximum oil yields for soxhlet and batch reactor were 23.6% at 80 °C and 21.9% at 65 °C, respectively for particle size diameter <0.5 mm when hexane was used as solvent. The kinetic of coconut waste oil extraction was found to be a first order mass transfer model. The ΔG, ΔS and ΔH values were 10.94–13.35 kJ/mol, 33.10–39.57 J/mol K and 0.12–1.25 kJ/mol, respectively shows that the extraction process was spontaneous, irreversible and endothermic based on thermodynamic parameters.
Comparative Study Of Various Pretreatment Reagents On Rice Husk And Structural Changes Assessment Of The Optimised Pretreated Rice Husk, Teck Nam Ang Dr., Gek Cheng Ngoh Dr, Adeline Seak May Chua Dr
Comparative Study Of Various Pretreatment Reagents On Rice Husk And Structural Changes Assessment Of The Optimised Pretreated Rice Husk, Teck Nam Ang Dr., Gek Cheng Ngoh Dr, Adeline Seak May Chua Dr
Teck Nam Ang Dr.
The performance of alkalis (NaOH and Ca(OH)2) and acids (H2SO4, HCl, H3PO4, CH3COOH, and HNO3) in the pretreatment of rice husk was screened, and a suitable reagent was assessed for subsequent optimisation using response surface methodology. From the assessment, HCl that hydrolysed rice husk well was optimised with three parameters (HCl loading, pretreatment duration, and temperature) using Box-Behnken Design. The optimised condition (0.5% (w/v) HCl loading, 125oC, 1.5 hours) is relatively mild, and resulted in ~22.3 mg TRS/ml hydrolysate. The reduced model developed has good predictability, where the predicted and experimental results differ by only 2%. The comprehensive structural characterization …