scholarly journals The separation of microscale HA in aqueous solution by foam separation technique

2019 ◽  
Vol 21 (4) ◽  
pp. 66-71
Author(s):  
Shao Wenyao ◽  
Gong Xiao ◽  
Cui Shuming ◽  
Lin Ying ◽  
Lu Yinghua ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Recovery Rate ◽  
Orthogonal Experiment ◽  
Extraction Process ◽  
Separation Technique ◽  
Enrichment Ratio ◽  
Liquid Volume ◽  
Optimum Process ◽  
Process Conditions ◽  
Foam Separation

Abstract Hyaluronic acid (HA) has important applications in fields of health care products, cosmetics and clinical medical. However, the unique physiological properties of HA make cost of its traditional separation and extraction process relatively high. Foam separation technique has simple, gentle and efficient advantages on the separation of substances with surface activity by using bubbles as the separation medium. In this paper, natural surfactant CocamideBetaine (CAPB) was used as a foaming agent to explore the technology of microscale HA in aqueous solution by foam separation. The optimum process conditions were determined based on the recovery rate and enrichment ratio of HA by single factor and orthogonal experiment: at room temperature, pH = 7, separating air velocity (v) = 350 mL/min, HA concentration (CHA) = 50 mg/L, adding liquid volume (V) = 200 mL, collecting time (tcol) = 10 min, CAPB concentration (CCAPB) = 0.035 g/L. Under these conditions, HA enrichment ratio (E) equals 6.821 and HA recovery rate (R) equals 66.425%.

Study on the Enzyme Desizing Process for Cotton Fabric Using Ultrasonication

2011 ◽  
Vol 331 ◽  
pp. 261-264 ◽  
Author(s):  
Qi Ming Zhao ◽  
Shan Yan Zhang
Keyword(s):  
Cotton Fabric ◽  
Ph Value ◽  
Orthogonal Experiment ◽  
Research Result ◽  
Strength Loss ◽  
Cotton Fabrics ◽  
Optimum Process ◽  
Process Conditions ◽  
Fabric Strength ◽  
Enzyme Dosage

The auxiliary devices of ultrasonic treatment was designed and manufactured. The cotton fabric was desized using 2000L desizing enzyme with the conventional enzyme desizing process and ultrasonic enzyme desizing process respectively. Through the orthogonal experiment, the optimum process conditions of conventional enzyme desizing process and ultrasonic enzyme desizing process were determined. For the conventional enzyme desizing process, the optimized desizing conditions of cotton fabrics were: desizing enzyme dosage was 1.5g/l, temperature was 80°C, PH value was 6, and time was 60mins. The optimum process conditions of ultrasonic enzyme desizing process were: desizing enzyme dosage was 1.5g/l, temperature was 50°C, PH value was 6 and time was 45minutes. The research result indicates that, under the same desizing condition, ultrasonication can improve the desizing percentage and whiteness of cotton fabric, but the fabric strength loss increases slightly. And for the same required desizing percentage, the ultrasonic enzyme desizing process saved time and reduced the temperature of experiments compared with traditional enzyme desizing process

scholarly journals Study on Aqueous Enzymatic Extraction Process of Common Pistache Oil

2021 ◽  
Vol 251 ◽  
pp. 02058
Author(s):  
Feng Xuehua ◽  
Tao Ali ◽  
Song Zurong ◽  
Gong Panpan
Keyword(s):  
Ph Value ◽  
Orthogonal Experiment ◽  
Extraction Process ◽  
Optimal Time ◽  
Process Conditions ◽  
Optimal Process ◽  
Enzymatic Extraction ◽  
Hydrolysis Time ◽  
Aqueous Enzymatic Extraction ◽  
The Common

The aqueous enzymatic method was applied to extract the common pistache oil and the optimal extraction process conditions were identified. By observing the effect of enzymatic hydrolysis time, pH value, temperature on aqueous enzymatic extraction process and performing the orthogonal experiment based on the single factor test, the optimal process parameters were obtained, namely, the optimal time, temperature, and pH value were respectively 3 h, 50℃, and 7 with a final extraction rate of 25.38 %.

The Preparation of Loaded Photocatalyst for Advanced Treatment of NH3-N in Coking Water

2013 ◽  
Vol 726-731 ◽  
pp. 2829-2832
Author(s):  
Yong Shu Tian ◽  
Run Xin Hou
Keyword(s):  
Photocatalytic Degradation ◽  
Orthogonal Experiment ◽  
Influence Factors ◽  
Advanced Treatment ◽  
Optimum Process ◽  
Process Conditions ◽  
Single Factor ◽  
Clay Brick ◽  
Degradation Rates ◽  
Single Factor Experiment

Photocatalyst of Fe-Sm-Yb modified TiO2 loaded on clay brick was prepared for degradation of NH3-N in coking water. The influence factors of NH3-N degradation rates were discussed by single factor experiment and orthogonal experiment. The optimum process conditions of photocatalytic degradation NH3-N in coking water were confirmed. The results show that NH3-N degradation rates 82.23% were highest in the conditions of pH 6.5, photocatalyst charge of 1.4 g, illumination for 6h, reaction at 55°C, calcination at 500°C.

Study on Preparation of Nanocarbon Black-Polypropylene Electric Conduction Composite Materials

2013 ◽  
Vol 785-786 ◽  
pp. 183-186
Author(s):  
Zhi Jia Han ◽  
Sheng Fei Shen ◽  
Zai Yuan Li
Keyword(s):  
Carbon Black ◽  
Orthogonal Experiment ◽  
Optimum Process ◽  
Process Conditions ◽  
Mixing Times ◽  
Single Factor ◽  
Carbon Black Content ◽  
Polypropylene Composite ◽  
Polypropylene Composites ◽  
Single Factor Experiment

The paper has learned on the preparation of nanometer carbon black and polypropylene nanocarbon black-polypropylene composite material by using the small extrusion blending mixer which has been designed by our team. The results show that: Resistance of nanometer carbon black - polypropylene composites decreases with increasing carbon black content and extrusion mixing times. Through single factor experiment and orthogonal experiment to determine the optimum process conditions are at 260°C, nanocarbon black content 60%, extrusion mixing times 5. Under these conditions the resistance of nanometer carbon black-get polypropylene composites is 12.73 ohms.

Application of Foam Separation Technology to Tea Saponin Extraction

2014 ◽  
Vol 997 ◽  
pp. 173-177 ◽  
Author(s):  
Yu Qiong Wu
Keyword(s):  
Ph Value ◽  
Optimal Operation ◽  
Enrichment Ratio ◽  
Liquid Volume ◽  
Single Factor ◽  
Separation Technology ◽  
Foam Separation ◽  
Tea Saponin ◽  
Operation Conditions ◽  
Single Factor Experiment

In this paper, a purity of 52.58% crude tea saponin as the research object, through the foam separation technology, tea saponin extraction process was researched. The feed concentration, gas flow rate, liquid volume and pH value were studied through single factor experiment, the rate of recovery and enrichment ratio as evaluation indexes, the single factor experiment results are analyzed, The design of L9 (34) orthogonal test was applied to confirm the optimum condition: the initial feed solution concentration 0.3mg/ml, air velocity 100ml/min, pH value of 6.5, liquid volume 35ml, enrichment ratio of 3.7896, the recovery rate 82.06%. The purity of the product reached 89.48% under the optimal operation conditions. The results showed that the foam separation techniques is applicable to tea saponin extraction.

Using Fly Ash to Preparare Polysilicate Aluminum Ferric Flocculant and Treating Coal Slurry

2015 ◽  
Vol 1092-1093 ◽  
pp. 966-971
Author(s):  
Jian Li Yang ◽  
Mei Li Du ◽  
Gang Li
Keyword(s):  
Fly Ash ◽  
Orthogonal Experiment ◽  
Curing Temperature ◽  
Molar Ratio ◽  
Optimum Process ◽  
Process Conditions ◽  
Coal Slurry ◽  
Element Ratio ◽  
Silicon Iron ◽  
Aluminum Iron

Solid waste resource utilization is a important way for sustainable economic development, environmental and ecological protection. Using adsorption and flocculation characteristics of fly ash to preparare fly ash-based inorganic flocculant and use it for treating slime water, make waste fly ash into treasure, not only solve environmental problems, but also has very important theoretical significance and application value.In this study, we use Na2CO3 melt to improve acid-soluble activity of fly ash, extract ideally the aluminum and iron silicon as active ingredients in the fly ash. On the basis of the solubilization experiment, we design orthogonal experiment about larger impact several factors on the the flocculant preparation of process: silicon and aluminum element ratio, silicon iron element ratio and curing temperature, the orthogonal experiment results show that the best optimum process conditions is: Si: Al (mole ratio) is 1:0.5, Si: Fe (molar ratio) is 1:0.5, curing temperature is 60°C, curing time is 2 hours. Finally, we use poly silicate aluminum iron flocculants prepared to do flocculation test on slime water, determine the best flocculation conditions is: when we treat slime water which concentration is 8g/L and volume is 250mL, the optimum dosage of polysilicate aluminum iron is 1.3mL, the transmittance gets to 74.2%, the flocculation effect is the best.

scholarly journals Study on the Extraction Technology of Candida antarctica Lipase B by Foam Separation

Processes ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 14
Author(s):  
Wenyao Shao ◽  
Ying Lin ◽  
Yinghua Lu
Keyword(s):  
Candida Antarctica ◽  
Candida Antarctica Lipase B ◽  
Enrichment Ratio ◽  
Liquid Volume ◽  
Candida Antarctica Lipase ◽  
Lipase B ◽  
Extraction Technology ◽  
Separation Technology ◽  
Foam Separation ◽  
Wide Range

Candida antarctica Lipase B (CALB) has a wide range of applications in many fields. In this study, Pichia pastoris was used to express CALB for fermentation tank culture. Sodium dodecyl sulfate (SDS) was used as a surfactant, and foam separation technology was used to explore the best experimental conditions for the harvest of CALB. The results showed that the optimal technological conditions for the foam separation and recovery of CALB were as follows: liquid volume was 150 mL, separating gas velocity was 600 mL/min, pH value was 7, and surfactant SDS concentration was 0.5 mg/mL. Under these conditions, the enrichment ratio of CALB was 0.95, and recovery rate R was 80.32%, respectively, indicating that the foam separation technology is feasible to extract lipase B.

Recovery of Molybdenum (VI) from Aqueous Solution with Packed Foam Column by Steady-State

2013 ◽  
Vol 641-642 ◽  
pp. 270-276
Author(s):  
Yong Qiang Zhang ◽  
Jing Wang ◽  
Mei Ling Shi ◽  
Xiao Xian Zhao
Keyword(s):  
Aqueous Solution ◽  
Steady State ◽  
Flow Rate ◽  
Recovery Rate ◽  
Surfactant Concentration ◽  
Separation Efficiency ◽  
Enrichment Ratio ◽  
Feed Flow Rate ◽  
Experimental Conditions ◽  
Distribution Density Function

The purpose of this study is to recover molybdenum (VI) from aqueous solution with packed foam column by steady-state operation using hexadecyl trimethyl ammonium chloride as the surfactant. The parameters include air and feed flow rate, packing layer heights, surfactant concentration and pH etc, then the macroscopical dynamics is studied. The experimental results show that there are little effects of liquor pH, air flowrate and surfactant concentration on recovery rate and enrichment ratio of molybdenum within experimental conditions, but with increase of feed flow rate, recovery rate and enrichment ratio all decline clearly, with increase of packing height, recovery rate enhances evidently, and enrichment ratio decreases slowly. The macroscopical dynamics show that the process can be regarded as first order reaction. The fluid flow pattern is close to piston, indicating that there is little liquid backmixing and in favor of advancing separation efficiency by analyzing variance and distribution density function.

scholarly journals Optimum Process Parameters for Activated Carbon Production from Rice Husk for Phenol Adsorption

2019 ◽  
pp. 1-11
Author(s):  
Iheanacho Chamberlain Ositadinma ◽  
Nwabanne Joseph Tagbo ◽  
Onu Chijioke Elijah
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Surface Area ◽  
Acid Concentration ◽  
Rice Husk ◽  
Process Parameters ◽  
Carbonization Temperature ◽  
Optimum Process ◽  
Process Conditions ◽  
Carbon Production

Aim: The determination of optimum process parameters in the production of activated carbon from rice husk for the uptake of phenol from aqueous solution was the focus of this work. Study Design: The optimization was designed using response surface methodology. Methodology: Central composite design (CCD) was used to generate the design matrix and analyze the result obtained. Carbonization temperature, percentage acid concentration and carbonization time were the factors considered. Tetraoxophosphoric acid (H3PO4) was employed in the activation process. The surface area was determined using the Brunauer-Emmet-Teller (BET) nitrogen adsorption method. Results: The result indicated the optimum process conditions as carbonization temperature of 575ºC, time of 240 minutes and 45 percentage acid concentration. This gave 96.5% adsorption efficiency of phenol from aqueous solution. There was good agreement between the experimental values and the predicted values. The BET surface area of the activated carbon was 471.1 m2/s. Conclusion: This work has optimized the process conditions for activated carbon production from rice husk for effective adsorption of phenol from wastewater.

Study on Ultrasonic Wave Extraction of Flavonoids from Bamboo Leaves

2013 ◽  
Vol 781-784 ◽  
pp. 731-736 ◽  
Author(s):  
Shao Juan Jiang
Keyword(s):  
Ultrasonic Wave ◽  
Ethanol Concentration ◽  
Orthogonal Experiment ◽  
Optimum Process ◽  
Process Conditions ◽  
Bamboo Leaves ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction ◽  
Single Factor Experiment

Extracting flavone from bamboo leaves by ultrasonic, the flavonoid extraction conditions was optimized by single factor experiment and orthogonal experiment design, and the traditional heat reflux method was compared. The results showed that: the optimum process conditions of ultrasonic wave extraction of flavonoids from bamboo leaves were ethanol concentration of 70%, solid to liquid ratio of 1:20, extracting 20 min in 60 °C. Under this condition, extraction content of total flavonoids was up to 4.538 mg.g-1. And ultrasonic assisted extraction was superior to hot reflux extraction.

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