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Mehdi Khanmohammadi,Ali Baradar Khoshfetrat,Shahla Eskandarnezhad,Najimeh Feyze Sani,Sirus Ebrahimi 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6
The optimization of hyaluronic acid (HA) extraction from eggshell was studied by using a sequentialexperimentation approach. Using the results of factorial experiments, optimization experiments werecarried out by response surface methodology. The experimental data as well as the validation testsshowedthe optimum performance when the extraction pH and time were bounded in the ranges of 3.4–3.5 and3–3.4 days, respectively, at 9 ℃. The purified HAwas characterized by FTIR spectrum, harmonic mean sizeand average molecularweight. The study depicted the potential of eggshell as an alternative source for HAextraction to use in industry and medicine.
Salman Alizadeh Kordkandi,Ali Baradar Khoshfetrat,Asaad Faramarzi 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.61 No.-
A novel semi-mechanistic data-driven technique based on an evolutionary polynomial regression (EPR) was developed along with a kinetic analysis to evaluate the performance of an external loop upflow partially-aerated fixed-film bioreactor (UP/ASFF). Modelling of experimental data was carried out under different organic loading rates (OLR), solid retention time (SRT), and food to microorganisms’ ratio (F/M ratio). The results showed that the EPR model was the best approach for the performance evaluation of the UP/ASFF system with R2 of 0.93 and normalized MSE of 0.02 although the Stover-Kincannon’s model showed also a promising predication with high accuracy and R2 of 0.92.
Salman Alizadeh Kordkandi,Ali Baradar Khoshfetrat 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.31 No.-
Performance and energy efficiency of an upflow partially aerated submerged fixed-film (UP/ASFF)bioreactor was evaluated during a 10-month operation period. Increasing loading rates at constant HRTand COD/N increased nitrogen removals. Increase of non-aerated zone could also improve the nitrogenremovals up to 83%. Energy performance coefficient based on required electrical energy showed that theenergy efficiency of the system increases at lower COD/N value and bigger non-aerated zone forsimultaneous COD and nitrogen removal from the synthetic wastewater. The present study showed alsosimilar performance for municipal wastewater, demonstrating the potential of UP/ASFF system to treathigh-ammonium municipal wastewaters.