Optimization of Microwave Drying of CuCl Residue Using Response Surface Methodology

2013 ◽  
Vol 803 ◽  
pp. 3-8 ◽  
Author(s):  
Yong Gang Zuo ◽  
Li Bo Zhang ◽  
Bing Guo Liu ◽  
Jin Hui Peng ◽  
Ai Yuan Ma
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Microwave Drying ◽  
Process Conditions ◽  
Optimum Conditions ◽  
Drying Temperature ◽  
Microwave Roasting ◽  
Dehydration Rate ◽  
Material Thickness ◽  
Rsm Technique

Abstract: The technology that CuCl residue from Zn hydrometallurgy was dried by microwave heating was studied. The influence of the drying duration, drying temperature and material thickness on dehydration rate was investigated. The response surface methodology (RSM) technique was utilized to optimize the process conditions. The optimum conditions for drying CuCl residue have been identified to be an drying temperature of 80°C, drying duration of 11 min and material thickness of 16 mm. The optimum conditions resulted in an CuCl residue with moisture content of 4.97%, which could ensure remove chlorine of CuCl residue by microwave roasting.

Optimization of drying ammonium tetramolybdate by microwave heating using response surface methodology

2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Libo Zhang ◽  
Wenqian Guo ◽  
Tu Hu ◽  
Jing Li ◽  
Jinhui Peng ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Microwave Heating ◽  
Microwave Drying ◽  
Process Variables ◽  
Optimum Conditions ◽  
Drying Time ◽  
Drying Temperature ◽  
Material Thickness ◽  
Rsm Technique

AbstractThe process of microwave drying ammonium tetramolybdate is studied, and the process variables of drying time, drying temperature and material thickness are considered. Experiences of microwave drying ammonium tetramolybdate have been optimized using response surface methodology (RSM) technique and a CCD design. Effects of each factor and their interactions are researched, and a quadratic polynomial model for dehydration ratio is established. As can be seen from the ANOVA, the effects of the three process variables are found to be significant in the model, and the empirical model is fit and reliable to check the dehydration ratio of ammonium tetramolybdate. The optimum conditions for drying using microwave heating are found as follows: drying temperature 67°C, drying time 9.5 min and material thickness 15 mm. The optimum dehydration ratio is 79.82% and the last molybdenum content is not <56.3%, with the relatively error of 0.64%, which indicates the success of the process optimization experiments. This research has important significance to offer optimum conditions for industrial production.

Experimental optimization of microwave drying zinc oxide leach residues by response surface methodology

2017 ◽  
Vol 6 (5) ◽  
Author(s):  
Weifeng Zhang ◽  
Junruo Chen ◽  
Guo Lin ◽  
Libo Zhang
Keyword(s):  
Zinc Oxide ◽  
Response Surface Methodology ◽  
Moisture Content ◽  
Response Surface ◽  
Multivariate Regression Analysis ◽  
Microwave Drying ◽  
Drying Time ◽  
Spectra Analysis ◽  
Dehydration Rate ◽  
Material Thickness

AbstractResponse surface methodology (RSM) and Box-Behnken design (BBD) were applied to experiment optimization of microwave drying zinc oxide leach residues (ZOLR). The effects of different factors involving temperature, drying time, material mass, material thickness and their interaction on moisture content and dehydration rate of ZOLR were investigated. Two second-order polynomial models for moisture content and dehydration rate of ZOLR were established by multivariate regression analysis. Analysis of variance shows that all independent variable and quadratic terms of the four factors have significant influence on moisture content and dehydration rate of ZOLR. The optimum drying conditions are as follows: temperature is 93.41°C, drying time is 15.9 min, sample mass is 77.91 g and material thickness is 17 mm. The predicted values of moisture content and dehydration rate were 10.98% and 1 g/min, which were close to experimental values 11±0.03% and 1±0.01 g/min under the optimal conditions. Infrared spectra analysis show that no chemical reactions took place in the process of microwave dying ZOLR and only a part of the absorbed water was removed in the sample.

scholarly journals Optimization of Osmo- Dehydration Process of Honey-Ginger Candy by using Response Surface Methodology

2020 ◽  
Vol 9 (4) ◽  
pp. 984-986
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Water Loss ◽  
Temperature Response ◽  
Convective Drying ◽  
Process Conditions ◽  
Process Variables ◽  
Solid Gain ◽  
Drying Temperature ◽  
Overall Acceptability

This report is to investigate the effects of process variables on the solid gain, water loss using the Response surface methodology (RSM). The ginger was Osmo-dehydrated using process variables such has blanching time, the temperature for an osmotic solution, immersion, & convective drying temperature .response variables tested were solid gain and water loss. The blanching is done to inactivate the enzyme and to increase permeability in ginger candy. The optimum Osmo-convective process conditions for a maximum solid gain, water loss, and overall acceptability of honey-ginger candy were 8.39 min blanching time, 39˚Csolution temperature, 94 min immersion time, and 70˚C convective drying temperature.

OPTIMIZATION OF COATING PROCESS OF HEMATITE NANO PARTICLES ON MICA FLAKES BY RESPONSE SURFACE METHODOLOGY

2008 ◽  
Vol 22 (18n19) ◽  
pp. 3225-3232
Author(s):  
M. R. TOHIDIFAR ◽  
E. TAHERI-NASSAJ ◽  
P. ALIZADEH
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Nano Particles ◽  
Synthesis Process ◽  
Optimum Conditions ◽  
Synthesis Time ◽  
Variable Parameters ◽  
Whole Process ◽  
Optimum Parameters ◽  
Rsm Technique

The present paper attempts as how the pigments comprising of nano-sized hematite particles deposited on mica surfaces in optimum conditions offer an excellent pearlescent properties. To record the influencing parameters on the synthesis process, response surface methodology (RSM) technique was used where temperature of reaction, synthesis time and concentration of urea were selected as variable parameters. Taking into account colorimetric parameters, the whole process was then analyzed by "Design Expert" software that finally gave following optimum factors: reaction temperature=82.02°C, synthesis time=11.98 h, urea concentration=37.5 g/l. Once the above optimum parameters selected, seemingly, the spherical hematite particles of about 60 nm in diameter are deposited uniformly on mica surfaces.

scholarly journals Optimization of Drying Process for Squid-Laver Snack by a Combined Method of Fuzzy Synthetic and Response Surface Methodology

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Chang-Cheng Zhao ◽  
Gui-Hun Jiang ◽  
Jong-Bang Eun
Keyword(s):  
Response Surface Methodology ◽  
Moisture Content ◽  
Response Surface ◽  
Water Activity ◽  
Shear Force ◽  
Process Conditions ◽  
Drying Process ◽  
Drying Temperature ◽  
Overall Acceptability ◽  
Drying Conditions

The aim of this study was to investigate the effects of drying temperature (50–70°C) and drying time (3–5 h) on the physical properties and quality of squid-laver snack (SLS) using response surface methodology combined with a synthetic evaluation method to optimize the drying process conditions. Moisture content, water activity, color (L⁎, a⁎, b⁎), shear force, and overall acceptability were evaluated as responses. Increased drying times and higher temperatures significantly reduced the moisture content and water activity of SLS from 9.07% to 4.76% and 0.136 to 0.056, respectively (p<0.05). There was no significant difference in the L⁎ and a⁎ values under different drying conditions. The quadratic effect of temperature and time was observed for the b⁎ value and overall acceptability of SLS. For shear force, a quadratic and interaction term for drying temperature and time on shear force was observed. In conclusion, the recommended optimal hot air-drying conditions for SLS are temperature and time of 70°C and 3 h, respectively.

Application of response surface methodology for optimization of parameters for microwave heating of rare earth carbonates

2016 ◽  
Vol 35 (8) ◽  
pp. 813-820
Author(s):  
Shaohua Yin ◽  
Guo Lin ◽  
Shiwei Li ◽  
Jinhui Peng ◽  
Libo Zhang
Keyword(s):  
Response Surface Methodology ◽  
Rare Earth ◽  
Response Surface ◽  
Microwave Heating ◽  
Power Density ◽  
Weight Reduction ◽  
Microwave Drying ◽  
Drying Time ◽  
Material Thickness ◽  
Rare Earth Carbonates

AbstractMicrowave heating has been applied in the field of drying rare earth carbonates to improve drying efficiency and reduce energy consumption. The effects of power density, material thickness and drying time on the weight reduction (WR) are studied using response surface methodology (RSM). The results show that RSM is feasible to describe the relationship between the independent variables and weight reduction. Based on the analysis of variance (ANOVA), the model is in accordance with the experimental data. The optimum experiment conditions are power density 6 w/g, material thickness 15 mm and drying time 15 min, resulting in an experimental weight reduction of 73%. Comparative experiments show that microwave drying has the advantages of rapid dehydration and energy conservation. Particle analysis shows that the size distribution of rare earth carbonates after microwave drying is more even than those in an oven. Based on these findings, microwave heating technology has an important meaning to energy-saving and improvement of production efficiency for rare earth smelting enterprises and is a green heating process.

scholarly journals Process Optimization and Modeling of Microwave Roasting of Bastnasite Concentrate Using Response Surface Methodology

ACS Omega ◽  
2021 ◽  
Author(s):  
Qiyuan Zheng ◽  
Yanhui Xu ◽  
Shengfeng Ma ◽  
Yu Tian ◽  
Weihua Guan ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Process Optimization ◽  
Microwave Roasting

scholarly journals Homogenate Extraction of Crocins from Saffron Optimized by Response Surface Methodology

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Yingpeng Tong ◽  
Yu Jiang ◽  
Dan Guo ◽  
Yongqiu Yan ◽  
Shiping Jiang ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Ethanol Concentration ◽  
Extraction Yield ◽  
Extraction Time ◽  
Process Conditions ◽  
Extraction Temperature ◽  
Single Factor ◽  
Extraction Voltage ◽  
Homogenate Extraction

Saffron, which has many kinds of biological activities, has been widely used in medicine, cosmetics, food, and other fields of health promotion industries. Crocins are the main component of saffron (Crocus sativus L.). At present, most of the extraction methods for crocins require long time or special instruments to complete the process and some of them are not suitable for industrial production at present. In this article, homogenate extraction technology which is a convenient and efficient method was developed for crocins extraction from saffron. Firstly, the influences of extraction voltage, extraction time, ethanol concentration, and temperature on crocins yield were studied by single factor experiments; and then response surface methodology (RSM) was used to optimize levels of four variables based on the result of single factor experiments. Results showed that the optimum extraction process conditions for crocins were as follows: extraction voltage, 110 V; ethanol concentration, 70%; extraction temperature, 57°C; and extraction time, 40 s. Based on these conditions, the extraction yield of crocins can reach 22.76% which is higher than ultrasonic extraction method. Therefore, homogenate extraction is an effective way to extract crocins from saffron with higher extraction yield and shorter extraction time.

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