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.

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.

OMG Neutral Deinking Technical Conditions and Mechanism

2011 ◽  
Vol 236-238 ◽  
pp. 1351-1354 ◽  
Author(s):  
Xiao Lin Zhang ◽  
Ru Min Wang
Keyword(s):  
Electron Microscopy ◽  
Fiber Surface ◽  
Single Factor ◽  
Sem Images ◽  
Operation Conditions ◽  
Microscope Images ◽  
Before And After ◽  
Distribution State ◽  
Single Factor Experiment ◽  
Scanning Electron

Single factor experiment was used to investigate neutral deinking technology of old magazine paper (OMG) by self-compounded NTM-2 deinking agent. Olympus inverted biological microscope were used to research distribution state of ink particles in the secondary pulp before and after deinking treatment. Scanning electron microscopy (SEM) was used to analyze fiber surface changing during neutral deinking and ink particles dispersing behaviors in the paper. The results showed that NTM-2 deinking agent had a good deinking effect to OMG, optimum operation conditions of neutral deinking was NTM-2 0.5%, deinking temperature 50°C, deinking time 40min, repulper time 25s, pulp consistence 1.0%, and floatation time 6 min. Under these conditions, brightness of the deinked pulp increased 8.4%SBD, and the ink removal efficiency reached by 90%. Olympus inverted biological microscope images showed that there were a large number of ink particles in the un-treated pulp, and these ink particles integrated with fibers tightly. After treated by neutral deinking, most of ink particles were separated from the fiber, dispersed and suspended in the pulp evenly. SEM images indicated that there were little ink particles in the secondary paper, the fiber surface turned more smoother, and the clean degree would nearly corresponding to the effect of alkaline deinking.

scholarly journals The Internal Recycle Reactor Enhances Porous Calcium Silicate Hydrates to Recover Phosphorus from Aqueous Solutions

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Wei Guan ◽  
Shichao Tian
Keyword(s):  
Surface Area ◽  
Pore Volume ◽  
Calcium Silicate ◽  
Ph Value ◽  
Optimal Operation ◽  
Phosphorus Recovery ◽  
Operation Conditions ◽  
Calcium Silicate Hydrates ◽  
Recycle Reactor ◽  
Adsorption Desorption

In this experiment, the porous calcium silicate hydrates (P-CSHs) were prepared via a hydrothermal method and then modified by polyethylene glycol (PEG). The modified P-CSHs combined with an internal recycle reactor could successfully recover the phosphorus from electroplating wastewater. The modified P-CSHs were characterized by X-ray diffraction (XRD), N2 adsorption-desorption isotherms, and Fourier transform infrared spectroscopy (FT-IR). After compared with different samples, the modified P-CSHs-PEG2000 sample had larger specific surface area of 87.48 m2/g and higher pore volume of 0.33 cm3/g, indicating a high capacity for phosphorus recovery. In the process of phosphorus recovery, the pH value of solution was increased to 9.5, which would enhance the recovery efficiency of phosphorus. The dissolution rate of Ca2+ from P-CSH-PEG2000 was fast, which was favorable for phosphorus precipitation and phosphorus recovery. The effects of initial concentration of phosphorus, P-CSHs-PEG2000 dosage, and stirring speed on phosphorus recovery were analyzed, so the optimal operation conditions for phosphorus recovery were obtained. The deposition was analyzed by XRD, N2 adsorption-desorption, and SEM techniques; it was indicated that the pore volume and surface area of the P-CSHs-PEG2000 were significantly reduced, and the deposition on the surface of P-CSHs-PEG2000 was hydroxyapatite.

Dyeing Properties of Tussah Silk Fabric with Indigo Naturalis and Turmeric

2011 ◽  
Vol 331 ◽  
pp. 352-355 ◽  
Author(s):  
Xu Hao ◽  
Yan Hua Lu
Keyword(s):  
Ph Value ◽  
Relative Concentration ◽  
Reduction Process ◽  
Silk Fabric ◽  
Single Factor ◽  
Dyeing Properties ◽  
Dyeing Process ◽  
Indigo Naturalis ◽  
Grade 3 ◽  
Single Factor Experiment

Two vegetable dyes of indigo naturalis and turmeric were combined on dyeing tussah silk fabric with two steps. The first step is dyeing the silk fabric with indigo naturalis by reduction process, and then dyed with turmeric by direct dyeing process. The results of single factor experiment on the indigo naturalis dyed tussah silk fabric dyeing with turmeric indicated that the relative concentration, pH value, dyeing temperature, and dyeing time had effect to a certain extent on the over dyeing. The dyeing conditions were determined by the above single factor experiment. The rubbing fastness and washing resistance of the dyed silk fabric could achieve to grade 3 more than grade 3.

Study on Purification of Tea Saponin by Foam Separation Method

2013 ◽  
Vol 750-752 ◽  
pp. 1555-1559
Author(s):  
Jun He ◽  
Li Fen Cao ◽  
Qing Qing Yao ◽  
Peng Fei Xu ◽  
Ning Yu ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Separation Method ◽  
Liquid Volume ◽  
Airflow Rate ◽  
Environmental Friendliness ◽  
Foam Separation ◽  
Tea Saponin ◽  
Factors Influencing

Foam separation method was utilized to purify crude tea saponin. The factors influencing the purification were studied, including the effects of original concentration, airflow rate and loading liquid volume. By systematic experiments, the optimal purification technology was determined. Foam separation method showed great advantages such as: low solvent and energy consumption, convenience, environmental friendliness. This work provides useful information for tea saponin purification development.

scholarly journals Indirect anodic oxidation applied for treatment of simulated wastewater containing Cationic Red X-GRL and Disperse Red 3B

2016 ◽  
Vol 7 (2) ◽  
pp. 197-204
Author(s):  
Bo Yang ◽  
Yue Xiang Li ◽  
Jiao Song
Keyword(s):  
Anodic Oxidation ◽  
Ph Value ◽  
Oxygen Demand ◽  
Electrolysis Time ◽  
Single Factor ◽  
Chemical Oxygen Demand Removal ◽  
Ring Structures ◽  
Simulated Wastewater ◽  
Single Factor Experiment ◽  
Dyes Degradation

The treatment of simulated wastewater containing Cationic Red X-GRL (X-GRL) or Disperse Red 3B (DR-3B) dye was carried out by indirect anodic oxidation, using Ti/SnO2 electrodes as the anode. The influences of pH value, voltage, electrolysis time and sodium chloride dosage on the degradation performance were studied by single factor experiment. Furthermore the nitrogen states and UV-Vis spectra in dyes degradation were analyzed. The results showed that under the optimum condition (pH = 3, voltage = 20 V, NaCl = 2.5 g/L), the decolorization and chemical oxygen demand removal of X-GRL were 98% and 67%, respectively; and those of DR-3B were 51% and 61%, respectively. The azo double bond conjugated system in X-GRL is much more easily destroyed than the anthraquinone conjugated system in DR-3B; the aryl ring structures of them can be partially degraded.

Experimental investigation of nitric oxide removal from flue gas using hexamminecobalt(II) solution scrubbing in a pilot-scale facility

2018 ◽  
Vol 36 (6) ◽  
pp. 505-512 ◽  
Author(s):  
Bing Han ◽  
Qinghai Li ◽  
Zhen Liu ◽  
Zhongchao Tan ◽  
Yanguo Zhang
Keyword(s):  
Nitric Oxide ◽  
Experimental Investigation ◽  
Removal Efficiency ◽  
Reaction Temperature ◽  
Ph Value ◽  
Pilot Scale ◽  
Optimal Operation ◽  
Experimental Results ◽  
No Removal ◽  
Operation Conditions

An experimental investigation of operational parameters, including liquid/gas ratio (L/G), inlet nitric oxide (NO) concentration, reaction temperature, and pH value of absorbing agent, on NO removal efficiency with hexamminecobalt(II) solution scrubbing was conducted on a pilot-scale facility to search optimal operation conditions. The experimental results show that NO removal efficiency increased with the pH value of hexamminecobalt solution, while the improving rate dropped gradually. When the reaction temperature increased, the NO removal efficiency increased first and then decreased. At the same time, NO removal efficiency increased with the increasing of L/G and hexamminecobalt concentration, while the removal efficiency did not change much at low NO concentration. The pH of 10.4 and L/G of 16 L/m3 were close to the optimal operation conditions, and the scrubbing temperature fell within a reasonable operation temperature. The experimental results can be used as a reference for the design and operation of scaled-up industrial devices.

scholarly journals Arsenate and Arsenite Sorption Using Biogenic Iron Compounds: Treatment of Real Polluted Waters in Batch and Continuous Systems

Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1608
Author(s):  
Laura Castro ◽  
Lesly Antonieta Ayala ◽  
Arevik Vardanyan ◽  
Ruiyong Zhang ◽  
Jesús Ángel Muñoz
Keyword(s):  
Iron Oxides ◽  
Ph Value ◽  
Alginate Beads ◽  
Optimal Operation ◽  
Anthropogenic Sources ◽  
Continuous Systems ◽  
Iron Compounds ◽  
Operation Conditions ◽  
Polluted Waters ◽  
Biogenic Iron

Arsenic pollution in waters is due to natural and anthropogenic sources. Human exposure to arsenic is associated with acute health problems in areas with high concentrations of this element. Nanometric iron compounds with large specific surface areas and higher binding energy produced by some anaerobic microorganisms are thus expected to be more efficient adsorbents for the removal of harmful metals and metalloids than chemically produced iron oxides. In this study, a natural consortium from an abandoned mine site containing mainly Clostridium species was used to biosynthesize solid Fe(II) compounds, siderite (FeCO3) and iron oxides. Biogenic precipitates were used as adsorbents in contact with solutions containing arsenate and arsenite. The adsorption of As(V) fitted to the Langmuir model (qmax = 0.64 mmol/g, KL = 0.019 mmol/L) at the optimal pH value (pH 2), while the As(III) adsorption mechanism was better represented by the Freundlich model (KF = 0.476 L/g, n = 2.13) at pH 10. Water samples from the Caracarani River (Chile) with high contents of arsenic and zinc were treated with a biogenic precipitate encapsulated in alginate beads in continuous systems. The optimal operation conditions were low feed flow rate and the up-flow system, which significantly improved the contaminant uptake. This study demonstrates the feasibility of the application of biogenic iron compounds in the treatment of polluted waters.

Study on Adsorption of Vinasse for Ag+

2013 ◽  
Vol 726-731 ◽  
pp. 2956-2959
Author(s):  
Yan Chen ◽  
Jing Wang ◽  
Rong Rong Su ◽  
Jia Quan Rao ◽  
Xiao Yan Lin
Keyword(s):  
Aqueous Solution ◽  
Removal Efficiency ◽  
Ph Value ◽  
Freundlich Isotherm ◽  
Ion Concentration ◽  
Single Factor ◽  
Equilibrium Sorption ◽  
Before And After ◽  
Single Factor Experiment ◽  
Maximum Removal

Effects of parameters including pH value, temperature, absorbent dosage, initial ion concentration, and absorbed time, on the removal efficiency of Ag+ from aqueous solution were investigated through single factor experiment. Vinasse before and after adsorption were characterized by IR. The maximum removal efficiency of Ag+ on vinasse is 97%. The equilibrium sorption is well demonstrated by Freundlich isotherm model.

Improvement of Emulsifying Properties of Soybean Protein Isolate through Glycosylation Modification

2013 ◽  
Vol 781-784 ◽  
pp. 1495-1499 ◽  
Author(s):  
Xi Bo Wang ◽  
Ying Hua Zhang ◽  
Lian Zhou Jiang
Keyword(s):  
Reaction Time ◽  
Reaction Temperature ◽  
Soybean Protein ◽  
Protein Isolate ◽  
Emulsifying Properties ◽  
Single Factor ◽  
Soybean Protein Isolate ◽  
Operation Conditions ◽  
Single Factor Experiment

In order to improve EAI and ESI of Soybean protein isolate (SPI), Glycosylation modification was studied by adding lactose and the operation conditions for modification were established by single factor experiment. On the basis, Box-Behnken model was used to optimize technological conditions, test and analyze the EAI and ESI of modified products under various conditions. The best glycosylation modification was as follows: the augmenter of lactose was 6.9%, reaction temperature was 70.5°C, reaction time was 38.6h, and the EAI and ESI could achieve 0.754 and 24.00 which was 2.32 and 2.67 times of the unmodified SPI. The experiment proved that the modification technology can effectively increase EAI and ESI of SPI.

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