Decolorization of baker’s yeast wastewater by nanofiltration membrane and performance evaluation using response surface methodology (RSM)

2021 ◽  
Author(s):  
M. Moradi ◽  
A. A. Zinatizadeh ◽  
S. Zinadini ◽  
S. Azizi ◽  
M. Maaza
Keyword(s):  
Response Surface Methodology ◽  
Performance Evaluation ◽  
Response Surface ◽  
Baker’S Yeast ◽  
Nanofiltration Membrane ◽  
Baker's Yeast ◽  
And Performance ◽  
Yeast Wastewater

Electrochemical treatment of Baker's yeast wastewater containing melanoidin: optimization through response surface methodology

2012 ◽  
Vol 65 (12) ◽  
pp. 2183-2190 ◽  
Author(s):  
E. Gengec ◽  
M. Kobya ◽  
E. Demirbas ◽  
A. Akyol ◽  
K. Oktor
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Current Density ◽  
Baker’S Yeast ◽  
Optimum Operating ◽  
Operating Parameters ◽  
Baker's Yeast ◽  
Toc Removal ◽  
Removal Efficiencies ◽  
Yeast Wastewater

Effluents from Baker's yeast production plant contain a high percentage of color and a large amount of organic load. In the present study, Baker's yeast wastewater (BYW) is treated with the electrocoagulation (EC) process using Al electrodes. Operating parameters (pH, current density, color intensity and operating time) are optimized by response surface methodology (RSM). Quadratic models are developed for the responses which are removal efficiencies of color, chemical oxygen demand (COD) and total organic carbon (TOC) and operating cost (OC). Optimum operating parameters and responses are determined as initial pH 5.2, current density of 61.3 A/m2 and operation time of 33 min, and 71% of color, 24% of COD, 24% of TOC removal efficiencies and OC of 0.869 €/m3, respectively. The quadratic model fits for all responses very well with R2 (>0.95). This paper clearly shows that RSM is able to optimize the operating parameters to maximize the color, COD and TOC removal efficiencies and minimize the OC.

Optimization of baker's yeast wastewater using response surface methodology by electrocoagulation

Desalination ◽  
2012 ◽  
Vol 286 ◽  
pp. 200-209 ◽  
Author(s):  
Erhan Gengec ◽  
Mehmet Kobya ◽  
Erhan Demirbas ◽  
Abdurrahman Akyol ◽  
Kadriye Oktor
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Baker’S Yeast ◽  
Baker's Yeast ◽  
Yeast Wastewater

scholarly journals Solar nanophotocatalytic pretreatment of seawater: process optimization and performance evaluation using response surface methodology and genetic algorithm

2021 ◽  
Vol 11 (2) ◽  
Author(s):  
Varghese Manappallil Joy ◽  
Shaik Feroz ◽  
Susmita Dutta
Keyword(s):  
Genetic Algorithm ◽  
Response Surface Methodology ◽  
Performance Evaluation ◽  
Response Surface ◽  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Treatment Process ◽  
Cod Removal ◽  
Solar Irradiation ◽  
And Performance

AbstractIn reverse osmosis seawater treatment process, membrane fouling can be mitigated by degrading organic pollutants present in the feed seawater. The present study evaluates the effectiveness of employing solar photocatalysis using TiO2/ZnO/H2O2 to pretreat reverse osmosis (RO) feed seawater under solar irradiation. Process optimisation and performance evaluation were undertaken using response surface methodology-desirability function and RSM integrated with genetic algorithm (RSM-GA). Statistical analysis was performed to determine the interactive relationships and main effects of input factors such as TiO2 dosage, H2O2 dosage, pH, reaction time and ZnO dosage. The performance evaluation was determined in terms of percentage removal of total organic carbon (TOC) and chemical oxygen demand (COD). The obtained optimum values using RSM-GA evaluation for TOC and COD removal were found to be 76.5% and 63.9%, respectively. The predicted RSM-GA results correspond well with the experimental results (TOC removal = 73.3%, COD removal = 61.2%). Utilization of renewable solar energy coupled with optimum utilisation of nanophotocatalysts enables this technique to be a unique treatment process for RO pretreatment of seawater and membrane fouling mitigation.

scholarly journals Application of Response Surface Methodology for Optimization of Permeabilization Process of Baker’s Yeast

2014 ◽  
Vol 16 (2) ◽  
pp. 31-35 ◽  
Author(s):  
Ilona Trawczyńska ◽  
Marek Wójcik
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Catalase Activity ◽  
Isopropyl Alcohol ◽  
Treatment Time ◽  
Baker’S Yeast ◽  
Operating Conditions ◽  
Yeast Cells ◽  
Optimum Operating ◽  
Baker's Yeast

Abstract Permeabilization was used for the purpose of transforming the cells of microorganisms into biocatalysts with an enhanced enzyme activity. Baker’s yeast cells were permeabilized with various organic solvents. A high degree of catalase activity was observed upon permeabilization with acetone, chloroform, isopropyl alcohol and ethyl acetate. Response surface methodology was used to model the effect of concentration of isopropyl alcohol, temperature and treatment time on the permeabilization of baker’s yeast cells to maximize the decomposition of H2O2. The optimum operating conditions for permeabilization were observed at 53.7% concentration of isopropyl alcohol, treatment time of 40 min and temperature of 15.6oC. A maximum value of catalase activity was found to be 6.188 U/g wet wt. and was ca. 60 times higher than the catalytic activity of yeast not treated by the permeabilization process.

scholarly journals Optimization of Baker’s Yeast Production on Date Extract Using Response Surface Methodology (RSM)

Foods ◽  
2017 ◽  
Vol 6 (8) ◽  
pp. 64 ◽  
Author(s):  
Mounira Kara Ali ◽  
Nawel Outili ◽  
Asma Ait Kaki ◽  
Radia Cherfia ◽  
Sara Benhassine ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Baker’S Yeast ◽  
Baker's Yeast ◽  
Yeast Production

scholarly journals Development of a motorised plantain chipping machine and performance evaluation using response surface methodology

2020 ◽  
Vol 45 (4) ◽  
pp. 16-28
Author(s):  
Ukachi Etoamaihe ◽  
Sylvia Isaac
Keyword(s):  
Stainless Steel ◽  
Response Surface Methodology ◽  
Performance Evaluation ◽  
Response Surface ◽  
Connecting Rod ◽  
Cutting Mechanism ◽  
Inclination Angles ◽  
Linear Effects ◽  
And Performance ◽  
Quadratic Effects

A motorised plantain chipping machine was developed. The machine is made up of a cutting device, a feeding mechanism, the support frame and an electric motor as a source of power. The cutting mechanism consists of the stainless steel blades, a connecting rod, a guide frame for the blades and pulleys. The blades are arranged perpendicular to the plantain tubers. During Performance Evaluation using Response Surface Methodology it was found that the chipping efficiency increased as the number of cutting blades are increased. Also the chipping efficiency increased with the speed of the machine but was not affected by the inclination angles of the blades. The linear effects of speed, the linear and quadratic effects of the number of blades significantly affected the chipping efficiency of the machine at 5% probability.

COD REDUCTION OF BAKER'S YEAST WASTEWATER USING BATCH ELECTROCOAGULATION

2014 ◽  
Vol 13 (12) ◽  
pp. 3153-3160 ◽  
Author(s):  
Zakaria Al-Qodah ◽  
Mohammad Al-Shannag ◽  
Kholoud Alananbeh ◽  
Nahla Bouqellah ◽  
Eman Assirey ◽  
...  
Keyword(s):  
Baker’S Yeast ◽  
Baker's Yeast ◽  
Cod Reduction ◽  
Yeast Wastewater
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