Aqueous Extraction of Chinese Tallow Seeds Oil

2012 ◽  
Vol 608-609 ◽  
pp. 328-332
Author(s):  
Wen Ma ◽  
Yu Huan Liu ◽  
Roger Ruan ◽  
Xiang Mei Jiang ◽  
Yun Pu Wang ◽  
...  
Keyword(s):  
High Pressure ◽  
Extraction Method ◽  
Ph Value ◽  
Oil Extraction ◽  
Liquid Ratio ◽  
Microwave Assisted ◽  
Pressure Steam ◽  
Aqueous Oil Extraction ◽  
Steam Processing ◽  
Solid Liquid

three oil extraction ways of microwave assisted, conventional and high-pressure oil extraction are compared, we select the high-pressure as the aqueous oil extraction method to carry on the experimental study of the relevant technology and discuss the solid-liquid ratio, baking time, baking temperature, pH value and high-pressure steam processing time on oil yield.

scholarly journals Ekstraksi Polifenol Total dari Herba Suruhan (Peperomia pellucida [L.] KUNTH) Menggunakan Metode Citric Acid-Glucose Based Microwave Assisted Extraction

2019 ◽  
Vol 10 ◽  
pp. 76-80
Author(s):  
Duwi Meiliyani ◽  
Sabaniah ◽  
Islamudin Ahmad
Keyword(s):  
Citric Acid ◽  
Extraction Method ◽  
Microwave Assisted Extraction ◽  
Green Solvent ◽  
Liquid Ratio ◽  
Extraction Condition ◽  
Total Polyphenols ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Solid Liquid

This study aims to determine the effect of citric acid-glucose based microwave assited extraction (MAE) method on total polyphenols content from (Peperomia pellucida [L.] Kunth) herbs. Dried samples were extracted using green solvent glucose citric acid with a ratio of 1: 1 g/g, 3: 1 g/g, and 5: 1 g/g, respectively, 30% microwave power for 5 minutes, and 1:5 g /mL solid-liquid ratio. Then the obtained extract solution was performed determination total polyphenols content using Folin-Ciocalteu reagent, and the absorbance was measured using a UV-Vis spectrophotometer at 791 nm. Based on the results, obtained total polyphenols content according to the extraction condition namely 214.405 mg GAE/g sample (3: 1 g /g solvent), 84.833 mg GAE /g sample (1: 1 g /g solvent) and 53,9451 mg GAE/g sample (5: 1 g /g solvent), respectively. This study is a preliminary data about the use of citric acid-glucose based microwave assisted extraction method on total polyphenols content from this plant quickly, easily and efficiently.

scholarly journals β-Cyclodextrin Modified Poly(Acrylonitrule-co-Acrylic Acid) Hydrogel for Thorium(IV) Adsorption

Polymers ◽  
2017 ◽  
Vol 9 (6) ◽  
pp. 201 ◽  
Author(s):  
Guojian Duan ◽  
Qiangqiang Zhong ◽  
Lei Bi ◽  
Liu Yang ◽  
Tonghuan Liu ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Contact Time ◽  
Ph Value ◽  
Water System ◽  
Maximum Adsorption Capacity ◽  
Practical Application ◽  
X Ray Diffraction ◽  
Liquid Ratio ◽  
X Ray ◽  
Solid Liquid

In this report, the β-CD(AN-co-AA) hydrogel was used to remove the thorium(IV) [Th(IV)] from the water system, and the new adsorbent was characterized through Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The influences of contact time, pH value, ionic strength, solid-liquid ratio, initial Th(IV) concentration, and temperature on Th(IV) adsorption onto the functional hydrogel were researched. The results showed that the experimental data followed the Langmuir isotherm and the maximum adsorption capacity (qmax) for Th(IV) was 692 mg/g at pH 2.95, which approached the calculated (qe) 682 mg/g. The desorption capacity of Th(IV) in different HNO3 concentrations ranging from 0.005 to 0.5 M was also studied, and the percentage of the maximum desorption was 86.85% in the condition of 0.09 M HNO3. The selectivity of β-CD(AN-co-AA) hydrogel was also be studied, the results indicated that this material retained the good adsorption capacity to Th(IV) even when the Ca2+, Mg2+, or Pb2+ existed in the system. The findings indicate that β-CD(AN-co-AA) can be used as a new candidate for the enrichment and separation of Th(IV), or its analogue actinides, from large-volume solution in practical application.

scholarly journals Chemical elution treatment of synthetic diamond production wastewater contaminated soil

2019 ◽  
Vol 136 ◽  
pp. 06034
Author(s):  
Guang-chen SU ◽  
Xiang-xiang WANG ◽  
Ying YANG ◽  
Hai-shan ShI
Keyword(s):  
Heavy Metals ◽  
Contaminated Soil ◽  
Synthetic Diamond ◽  
Ph Value ◽  
Economic Factors ◽  
Time Cost ◽  
Liquid Ratio ◽  
Removal Rates ◽  
Elution Time ◽  
Solid Liquid

The optimal removal conditions of heavy metal Coand Nicomposite contaminated soil were studied by the method of oscillating elution. The removal effects of different eluents on Coand Niat different concentrations were discussed.The results showed that the removal efficiency of citric acid with the concentration of 0.2mol•L-1was the best,and the removal rates of Coand Niwere 73.40% and 73.03%.On this basis, the effects of solid-liquid ratio, pH and elution time on the elution effect were investigated.The resultsshow that the trend of the two heavy metals affected by the above three factors is about the same. As the solid-liquid ratio decreases, the elution effect gradually increases, but the growth range is different.As the pH increases, the elution effect of the two heavy metals decreases. In addition, the removal rates of the two heavy metals show a trend of rising first, then stabilizing, and then continuing to rise. Considering economic factors, time cost and treatment effect, the best elution conditions aresolid-liquid ratio of 1: 20, pH value of 2 and elution time of 6 h.

Study on Steam Extraction Technology Assisted by Microwave of Anise Star Oil from the Fruit of Illicium verum Hook. f.

2011 ◽  
Vol 201-203 ◽  
pp. 2935-2938
Author(s):  
Guo En Yang ◽  
Gui Wu Wang ◽  
Zhi Ping Wu ◽  
Xiang Zhou Li
Keyword(s):  
Extraction Method ◽  
Steam Distillation ◽  
Influencing Factor ◽  
Extraction Process ◽  
Average Yield ◽  
Liquid Ratio ◽  
Extraction Technology ◽  
Steam Extraction ◽  
Illicium Verum ◽  
Solid Liquid

Evaluated with the yield of anise star oil, steam extraction method assisted by microwave is studied for the extraction of anise star oil from Illicium verum Hook. f. in contrast with the traditional steam distillation (SD) method in this paper. The new optimal steam extraction technology assisted by microwave of anise star oil is obtained as: extracting time 80 minutes, solid-liquid ratio(g/mL) 1:7, size of material 80~100 mesh and extracting temperature 80°C. Average yield of anise star oil is up to 11.6% (g/g) under the above technology. Size of material is the most important influencing factor in the extraction process. The optimal traditional steam distillation technology is: extracting time 120 minutes, solid-liquid ratio(g/mL) 1:6, size of material 80~100 mesh and extracting temperature 100°C , the average yield of anise star oil is only 9.81% (g/g). The steam extraction technology assisted by microwave has advantages in both the technological conditions and the yield of anise star oil than the traditional steam distillation technology.

scholarly journals Preparation of ring crosslinked poly (p-nitrile) nanoparticles and Study on adsorption behavior of uranium (VI)

2021 ◽  
Vol 290 ◽  
pp. 03006
Author(s):  
Meixue Xu ◽  
Pei Tian ◽  
Jing Wen ◽  
Yang Yang ◽  
Yanfei Wang
Keyword(s):  
Ph Value ◽  
Adsorption Rate ◽  
White Powder ◽  
Adsorption Behavior ◽  
Main Body ◽  
Liquid Ratio ◽  
Effects Of Ph ◽  
Solid Liquid

Cyclo crosslinked polyphosphazenes (PPNs) were prepared by Hexachlorocyclotriphosphazene (HCCP) with unique P = n structure and active p-cl group and green compound phloretin. The synthesis pro cess of polyphosphazene nanospheres with Hexachlorocyclotriphosphazene as the main body and phloretin was discussed. The effects of pH value and solid-liquid ratio of solution on the adsorption of uranium by pol yphosphazene nanospheres were studied. The results show that polyphosphazene nanospheres are off white powder in appearance and spherical in microstructure. When the pH value of the solution is 4 and the solid-l iquid ratio is 0.5g ·L-1, the maximum adsorption rate of uranium is obtained.

scholarly journals Microwave Assisted Alkaline Pretreatment of Algae Waste in the Production of Cellulosic Bioethanol

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5891
Author(s):  
Rocío Maceiras ◽  
Víctor Alfonsín ◽  
Luis Seguí ◽  
Juan F. González
Keyword(s):  
Microwave Power ◽  
Reducing Sugars ◽  
Irradiation Time ◽  
Alkaline Pretreatment ◽  
Liquid Ratio ◽  
Fermentation Efficiency ◽  
Microwave Assisted ◽  
Microwave Effect ◽  
Solid Liquid ◽  
Bioethanol Yield

Biomass pretreatment has an important role in the production of cellulosic bioethanol. In this study, the effectiveness of microwave assisted alkaline pretreatment of algae waste was analysed. After pretreatment, the product was hydrolysed using sulphuric acid. The effects of microwave power, irradiating time, solid–liquid ratio and NaOH concentration were examined. Under the best conditions, the fermentable sugars were converted to cellulosic bioethanol using Saccharomyces Cerevisiae with a bioethanol yield of 1.93 ± 0.01 g/g and a fermentation efficiency of 40.4%. The reducing sugars concentration was 30% higher than that obtained from conventional hydrolysis without pretreatment. The obtained results suggest that microwave assisted alkaline pretreatment is effective in improving the production of cellulosic bioethanol of algae waste compared to that without microwave effect. Considering energy consumption, low microwave power and short microwave irradiation time are favourable for this pretreatment.

Removal of Copper from Vineyard Soil by Washing with Biosurfactant

2014 ◽  
Vol 1065-1069 ◽  
pp. 3091-3095
Author(s):  
Da Zhao ◽  
Yue Zhao ◽  
Shi Bo Tao
Keyword(s):  
Removal Efficiency ◽  
Contact Time ◽  
Ph Value ◽  
Batch Experiments ◽  
Liquid Ratio ◽  
Washing Process ◽  
Vineyard Soil ◽  
Alkaline Conditions ◽  
Solid Liquid ◽  
Fermentation Solution

The washing process in batch experiments was conducted to investigate the performance of fermentation solution on removal copper(Cu) from vineyard soil. The effects of solid-liquid ratio, pH value and contact time on the removal capacities of Cu by fermentation solution had been studied. The results showed that the optimum solid-liquid ratio was 1:10 for soil treatment. The fermentation solution showed a better removal efficiency of Cu in alkaline conditions, getting the highest removal efficiency of 34.3%. In addition, with the increase of contact time, higher removal efficiency was obtained.

The Extractive Technique of Active Constituent in Six Insecticidal Plants

2011 ◽  
Vol 291-294 ◽  
pp. 2586-2590
Author(s):  
Hui Wang ◽  
Ling Ma ◽  
Wei Ma
Keyword(s):  
Extraction Method ◽  
Artemisia Annua ◽  
Orthogonal Experiment ◽  
Ethanol Solution ◽  
Ultrasonic Extraction ◽  
Extraction Time ◽  
Liquid Ratio ◽  
Active Ingredients ◽  
Active Constituent ◽  
Solid Liquid

In this study, the soakage extraction method and the ultrasonic extraction method were used to extract active ingredients from Artemisia annua, Artemisia sieversiana, Artemisia mongolica，Artemisia scoparia, Artemisia lavandulaefolia and Artemisia japonica. Using the orthogonal experiment design, we studied the effects of four factors: extraction time, solid-liquid ratio, fineness and extraction times, on extracting active ingredients from Artemisia annua. We also optimized the extraction conditions of the ultrasonic wave method. The results showed that 95% ethanol solution was the best solvent for extracting components in these six species of Artemisia. The best extraction method was ultrasonic extraction method. The optimum extraction conditions of ultrasonic extraction were 1:20 of solid-liquid ratio, one time of extraction, 40 of degree of fineness and 40 minutes of extraction time.

scholarly journals Optimization of DHEA Extraction from Sweet Potato Pomace by Ultrasonic-Microwave Synergistic Employing Response Surface Methodology

2019 ◽  
Vol 102 (2) ◽  
pp. 680-682
Author(s):  
Junjian Ran ◽  
Xinhong Liang ◽  
Hanmei Du ◽  
Junliang Sun
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Sweet Potato ◽  
Extraction Method ◽  
Extraction Efficiency ◽  
Extraction Yield ◽  
Extraction Temperature ◽  
Liquid Ratio ◽  
Solid Liquid ◽  
Optimum Extraction

Abstract Background: A lot of sweet potato residues (SPR) were discarded and wasted. Objective: To make full use of the SPR. Methods: Ultrasonic microwave synergistic (UMS) extraction method was used to extractdehydroepiandrosterone (DHEA) in SPR. The extraction conditions were optimized by response surface methodology based on single factors. Results: The optimum extraction conditions were 1:25 (solid–liquid ratio), 300 W (microwave power), 30 min (extraction time), and 30°C (extraction temperature). The extraction yield of DHEA from SPR reached 117.25 μg/100 g. Conclusions: The advantage of UMS extractiontechnology is to make full use of the synergistic effect of ultrasound and microwave to improve extraction efficiency. Highlights: The technology provides an effective way to improve the DHEA extraction yield from the SPR in industrial production.

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