scholarly journals Evaluation of Dried Sweet Sorghum Stalks as Raw Material for Methane Production

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Leonidas Matsakas ◽  
Ulrika Rova ◽  
Paul Christakopoulos
Keyword(s):  
Response Surface Methodology ◽  
Anaerobic Digestion ◽  
Response Surface ◽  
Methane Production ◽  
Sweet Sorghum ◽  
Enzymatic Treatment ◽  
Combined Effect ◽  
Raw Material ◽  
Thermal Pretreatment ◽  
One Step

The potential of utilizing dried sweet sorghum stalks as raw material for anaerobic digestion has been evaluated. Two different treatments were tested, a mild thermal and an enzymatic, alone or in combination. Thermal pretreatment was found to decrease the methane yields, whereas one-step enzymatic treatment resulted in a significant increase of 15.1% comparing to the untreated sweet sorghum. Subsequently, in order to increase the total methane production, the combined effect of enzyme load and I/S on methane yields from sweet sorghum was evaluated by employing response surface methodology. The obtained model showed that the maximum methane yield that could be achieved is 296 mL CH4/g VS at I/S ratio of 0.35 with the addition of 11.12 FPU/g sweet sorghum.

Optimization of the Ultrasonic Extraction of Gypenoside III from Gynostemma pentaphyllum by Response Surface Methodology

2012 ◽  
Vol 550-553 ◽  
pp. 1866-1870
Author(s):  
Xiao Dan Tang ◽  
Hai Yang Hang ◽  
Shao Yan Wang ◽  
Jing Xiang Cong
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Extraction Yield ◽  
Raw Material ◽  
Extraction Temperature ◽  
Optimal Conditions ◽  
Gynostemma Pentaphyllum ◽  
Bioactive Component ◽  
Yield Value ◽  
Ultrasonic Time

Gypenosides III is a major bioactive component which is rich in Gynostemma pentaphyllum. For better utilization of the native resource, response surface methodology was used to optimize the extraction conditions of gypenosides III from G. pentaphyllum. The effects of three independent variables on the extraction yield of gypenosides III were investigated and the optimal conditions were evaluated by means of Box-Behnken design. The optimal conditions are as follows: ratio of ethanol to raw material 25, extraction temperature 58°C and ultrasonic time 25min. Under these conditions, the yield of gypenoside III is 1.216±0.05%, which is agreed closely with the predicted yield value.

Optimization of saccharification of sweet sorghum bagasse using response surface methodology

2013 ◽  
Vol 44 ◽  
pp. 211-219 ◽  
Author(s):  
Jitendra K. Saini ◽  
Rahul K. Anurag ◽  
Arti Arya ◽  
B.K. Kumbhar ◽  
Lakshmi Tewari
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Sweet Sorghum ◽  
Sweet Sorghum Bagasse ◽  
Sorghum Bagasse

Optimization of Microwave Extraction Process by Response Surface Methodology of Flavonoids from Tussilago farfara L.

2013 ◽  
Vol 763 ◽  
pp. 246-249
Author(s):  
Xiao Song ◽  
Peng Zhao
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Microwave Power ◽  
Extraction Process ◽  
Raw Material ◽  
Extraction Time ◽  
Microwave Extraction ◽  
Water Solvent ◽  
Tussilago Farfara ◽  
Optimum Extraction

Flavonoids from Tussilago farfara L. was extracted with the assistance of microwave.Box-Behnken design (BBD) was employed to optimize extraction time; microwave power and ratio of water to raw material to obtain a high flavonoids yield.The optimum extraction conditions were as follows: 73.3% ethanol-water solvent, time 16.25 min and ratio of solvent to raw material 36.2ml/g.The yield of flavonoids was 11.37% based on the above mentioned conditions.

Research on Biochemical Materials with Optimization of Microwave Extraction Process by Response Surface Methodology of Flavonoids from Platycarya strobi lacea sieb.et zucc.

2014 ◽  
Vol 1014 ◽  
pp. 61-64
Author(s):  
Xiao Song ◽  
Peng Zhao ◽  
Qing Hua Meng ◽  
Zhi Shu Tang ◽  
Chang Li Wang
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Microwave Power ◽  
Extraction Process ◽  
Raw Material ◽  
Extraction Time ◽  
Microwave Extraction ◽  
Water Solvent ◽  
Optimum Extraction

Flavonoids from Platycarya Strobi lacea Sieb.et Zucc. was extracted with the assistance of microwave.Box-Behnken design (BBD) was employed to optimize extraction time; microwave power and ratio of solvent to raw material to obtain a high flavonoids yield. The optimum extraction conditions were as follows: 65.32% ethanol-water solvent, time 3.96 min and ratio of solvent to raw material 20.8 ml/g.The yield of flavonoids was 3.41% based on the above mentioned conditions.

scholarly journals Pelletization of Sunflower Seed Husks: Evaluating and Optimizing Energy Consumption and Physical Properties by Response Surface Methodology (RSM)

Processes ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 591 ◽  
Author(s):  
Xuyang Cui ◽  
Junhong Yang ◽  
Xinyu Shi ◽  
Wanning Lei ◽  
Tao Huang ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Energy Consumption ◽  
Moisture Content ◽  
Physical Properties ◽  
Response Surface ◽  
Sunflower Seed ◽  
Biomass Energy ◽  
Raw Material ◽  
The Novel ◽  
Seed Husk

Pelletization is a significant approach for the efficient utilization of biomass energy. Sunflower seed husk is a common solid waste in the process of oil production. The novelty of this study was to determine the parameters during production of a novel pellet made from sunflower seed husk. The energy consumption (W) and physical properties (bulk density (BD) and mechanical durability (DU)) of the novel pellet were evaluated and optimized at the laboratory by using a pelletizer and response surface methodology (RSM) under a controlled moisture content (4%–14%), compression pressure (100–200 MPa), and die temperature (70–170 °C). The results show that the variables of temperature, pressure, and moisture content of raw material are positively correlated with BD and DU. Increasing the temperature and moisture content of raw materials can effectively reduce W, while increasing the pressure has an adverse effect on W. The optimum conditions of temperature (150 °C), pressure (180 MPa), and moisture content (12%) led to a BD of 1117.44 kg/m3, DU of 98.8%, and W of 25.3 kJ/kg in the lab. Overall, although the nitrogen content was slightly high, the novel manufactured pellets had excellent performance based on ISO 17225 (International Organization for Standardization of 17225, Geneva, Switzerland, 2016). Thus, sunflower seed husk could be considered as a potential feedstock for biomass pelletization.

Optimization of Ultrasonic Extraction of Polyphenol from Pinus Koraiensis Bark Using Response Surface Methodology

2011 ◽  
Vol 183-185 ◽  
pp. 1874-1878 ◽  
Author(s):  
Ji Chang Wang ◽  
Zhen Yu Wang ◽  
Zi Luan Fan ◽  
Li Li Zuo ◽  
Shuang Qi Tian ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Phenolic Compounds ◽  
Response Surface ◽  
Ethanol Concentration ◽  
Processing Parameters ◽  
Ultrasonic Extraction ◽  
Raw Material ◽  
Extraction Time ◽  
Pinus Koraiensis ◽  
Ultrasonic Power

Ultrasonic technology was applied for phenolic compounds extraction from the Pinus koraiensis bark （PKB） and response surface methodology (RSM) was used to optimize the effects of processing parameters on phenolic compounds yields. When ultrasonic power 160W,three independent variables were ultrasonic extraction time (X1 20-40min), ratio of water to raw material (X2 1:20-1:40 g/mL)and ethanol concentration(X3 20％-60％), respectively.The optimal extraction conditions of phenolic compounds were determined as follows: Ultrasonic extraction time 30.61 min, ratio of water to raw material 30.79 mL/g and ethanol concentration 42.2%. Under these conditions, the experimental yield of phenolic compounds was 8.2409 ± 0.0648‰, well matched with the predicted models with the coefficients of determination (R2) of 0.9920, which was agreed closely with the predicted value (8.2963‰).

Optimization of Synthesis Technology of Acetylferrocene by Response Surface Methodology

2012 ◽  
Vol 622-623 ◽  
pp. 162-165
Author(s):  
Da Wei Yin ◽  
Gang Tao Liang ◽  
Xiao Ming Sun ◽  
Yu Ting Liu
Keyword(s):  
Response Surface Methodology ◽  
Reaction Time ◽  
Response Surface ◽  
Acetyl Chloride ◽  
Raw Materials ◽  
Raw Material ◽  
Interactive Effects ◽  
Percentage Yield ◽  
Experimental Yield ◽  
Central Composite

Acetylferrocene was synthesized by acetyl chloride and ferrocene as raw materials, dichloromethane as the solvent, and ZnO as catalyst. Response surface methodology based on three-level, three-variable central composite rotable design was used to evaluate the interactive effects of the ratio of acetyl chloride and ferrocene(2-4), the amount of ZnO(1.0-1.3mol), reaction time(30-60 min)on the percentage yield of acylferrocene. The optimal raw material ratio, amount catalyst, and reaction time was 3:1, 1.19mol, 40min. Under the optimum conditions, the actual experimental yield can reach 86.72%.

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