Experimental Research on Adsorbents Preparation Made from Oily Sludge

2016 ◽  
Vol 703 ◽  
pp. 331-336
Author(s):  
Chao Tang ◽  
Jiao Jiao Guan
Keyword(s):  
Pyrolysis Temperature ◽  
Removal Rate ◽  
Oily Sludge ◽  
Oil Removal ◽  
Optimum Conditions ◽  
Liquid Ratio ◽  
Simulated Wastewater ◽  
Solid Liquid ◽  
Surface Morphologies ◽  
Staying Time

The objective of this study was to prepare adsorbents from two kinds of oily sludge and evaluate their adsorption characteristics. The results showed that the optimum conditions of adsorbent made from JL sludge was using ZnCl2 as activator, the concentration of activatorwas 0.5mol/L, solid-liquid ratio was 1:2, pyrolysis temperature was 550°C, staying time was 2h. The optimum conditions of adsorbent made from LH sludge was pyrolysis directly. Pyrolysis temperature was 650°C, staying time was 2h. The surface morphologies of two adsorbents were relatively rough and had irregular porous structure mainly in mesoporous. The iodine adsorption values of two adsorbents can reach 451.22mg/g and 376.48mg/g and the oil removal rate of simulated wastewater can reach 91.47% and 92.28% respectively.

Ultrasound-UV Method Detect Oil Content of Oily Sludge from Daqing Oilfield

2010 ◽  
Vol 113-116 ◽  
pp. 2292-2295
Author(s):  
Jie Zhang ◽  
Zhao Yang Wang ◽  
Jing Xin Sun ◽  
Li Wei ◽  
Bin Song Wang ◽  
...  
Keyword(s):  
Petroleum Hydrocarbons ◽  
Traditional Method ◽  
Oil Content ◽  
Total Petroleum Hydrocarbons ◽  
Oily Sludge ◽  
Production Plant ◽  
Liquid Ratio ◽  
Plant Oil ◽  
Standard Curve ◽  
Solid Liquid

Drained sludge of Daqing oilfield No.4 oil production plant was collected from bottoms of tanks, and the oil content was usually lower than 2%. In this paper, the contents of petroleum substances, total petroleum hydrocarbons (TPH) and animal and plant oil were investigated. Ultrasound-UV method was used to detect the oil content of oily sludge. Results showed that the best ultrasound time was 8 min and the best solid-liquid ratio for the extraction was about 1:20. The standard curve was constructed. The comparison between the ultrasound-UV method and the traditional method shows that the ultrasound-UV method is more suitable for the detection of oil content of oily sludge with lesser oil. Moreover, the methods of detecting sludge with lower oil content have been established.

scholarly journals Ultrasound-Assisted Extraction of Polyphenols from Crude Pollen

Antioxidants ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 322 ◽  
Author(s):  
Mircea Oroian ◽  
Florin Ursachi ◽  
Florina Dranca
Keyword(s):  
Extraction Efficiency ◽  
Phenolic Content ◽  
Extraction Yield ◽  
Total Phenolic ◽  
Optimum Conditions ◽  
Liquid Ratio ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasonic Process ◽  
Solid Liquid

The aim of this study was to evaluate the extraction efficiency of polyphenols from crude pollen by an ultrasonic process. Prior to the polyphenols extraction, the crude pollen was defatted. The extraction from defatted pollen was carried out by varying four extraction parameters: ultrasonic amplitude (20%, 60% and 100%), solid/liquid ratio (10 g/L, 20 g/L and 30 g/L), temperature (35, 50 and 65 °C) and time (10, 20 and 30 min). The extracts were analyzed in terms of extraction yield (%), total phenolic content (TPC) and total flavones content (TFC). The extracted oil was analyzed in terms of fatty acids composition; myristic acid (159.1 µg × g−1) and cis-14-pentadecenoic acid (106.6 µg·g−1) were found in the highest amount in the pollen oil. The optimum conditions of extraction were determined and were, as follows: 100% amplitude of ultrasonic treatment, 30 g/L solid/liquid ratio, 40.85 °C and 14.30 min, which led to the extraction of 366.1 mg GAE/L of TPC and 592.2 mg QE/g of TFC, and also to an extraction yield of 1.92%.

Research on Extraction of Proanthocyanidin from Peanut Skin by Aspergillus niger Fermentation

2011 ◽  
Vol 236-238 ◽  
pp. 2499-2504 ◽  
Author(s):  
Chu Shu Zhang ◽  
Qing Li Yang ◽  
Ke Jia ◽  
Zhi Qiang Liu ◽  
Li Na Yu ◽  
...  
Keyword(s):  
Cell Wall ◽  
Aspergillus Niger ◽  
Orthogonal Experiment ◽  
Extraction Time ◽  
Extraction Temperature ◽  
Single Factor ◽  
Optimum Conditions ◽  
Liquid Ratio ◽  
Peanut Skin ◽  
Solid Liquid

The cell wall of peanut skin was destroyed by cellulase enzymolysis from peanut skin fermentation, which was beneficial to extract proanthocyanidin. The extraction conditions of proanthocyanidin from fermented peanut skin were studied according to orthogonal experiment based on single factor experiments. And the optimum conditions were obtained as follows: extraction time 40min, extraction temperature 55°C, Concentrations of ethanol 45%, solid-liquid ratio 1:15. The extraction rate was 16.17 %.

Study on the Extraction and Stability of Strawberry Red Pigment

2013 ◽  
Vol 781-784 ◽  
pp. 1886-1890
Author(s):  
Fei Long Sun ◽  
Zhang Peng Li ◽  
Ting Li ◽  
Yong Fan ◽  
Yan Chu ◽  
...  
Keyword(s):  
Extraction Process ◽  
Potassium Sorbate ◽  
Extraction Temperature ◽  
Red Pigment ◽  
Optimum Conditions ◽  
Liquid Ratio ◽  
Extensive Range ◽  
Development And Utilization ◽  
The Stability ◽  
Solid Liquid

Natural pigments have raised a growing interest due to their extensive range of colors, innocuous and beneficial health effects. In this paper, the extraction process and stability of strawberry red pigment were studied. An orthogonal test [L16(4)4] was applied to get the best extraction conditions. Results showed that the optimum conditions were that the extraction temperature was 65C, the solid-liquid ratio was 1:5 (g/mL), the ratio of 1.5mol/L hydrochloride to 97.5% ethanol was 3:17 (mL/mL), and the extraction time was 4.5 hours. The effects of heat treatment, oxidant, sugar and preservatives on the stability of strawberry red pigment were also discussed. The stability of strawberry red pigment was found to be affected by high temperature, hydrogen peroxide, and potassium sorbate. This study is expected to provide a basis for further research, development, and utilization of strawberry red pigment.

Study on the Preparation of Activated Carbons with Baijiu Vinasse

2013 ◽  
Vol 448-453 ◽  
pp. 669-673
Author(s):  
Ling Lin Chen ◽  
Hua Zhao
Keyword(s):  
Activated Carbons ◽  
Retention Rate ◽  
Chemical Activation ◽  
Solution Concentration ◽  
Optimum Conditions ◽  
Liquid Ratio ◽  
Protein Retention ◽  
Surface Method ◽  
Naoh Solution ◽  
Solid Liquid

Activated carbons were prepared with Baijiu vinasse in this study. The response surface method was used to optimize the process parameters of NaOH solution boiling treatment to extract the protein in Baijiu vinasse. Ascertaining the optimum conditions that NaOH solution concentration is 2.5mol/L, treating time is 2hours and solid-liquid ratio is 1:4. So the protein retention rate is 1.116%.The methods of ZnCl2 chemical activation and high temperature calcination activation were used to prepare activated carbons. Under the optimum conditions of ZnCl2 concentration 50%, solid-liquid ratio 1:2, calcination time 120min, calcination temperature 600°C, the methylene blue adsorption reaches to 208mg/g.

Optimization of the Water Extraction Technology of Flavonoids in Thlaspi arvense Linn

2013 ◽  
Vol 781-784 ◽  
pp. 1194-1198
Author(s):  
Yan Ge ◽  
Rong Kai Ma ◽  
Li Sheng Wang ◽  
Xuan Hai Li ◽  
Xuan Luo
Keyword(s):  
Water Extraction ◽  
Extraction Time ◽  
Single Factor ◽  
Optimum Conditions ◽  
Liquid Ratio ◽  
Extraction Technology ◽  
Thlaspi Arvense ◽  
Orthogonal Experiments ◽  
Solid Liquid

Single factor experiments and orthogonal experiments were successively carried out to optimize the water extraction technology of flavonoids in Thlaspi arvense Linn. Results showed that the influential order of factors was extraction times >solid-liquid ratio >extraction time. The optimum conditions were adding 16 times amount of water, extracting 3 times and every time with 4 hours. Under these conditions, the yield of flavonoids from Thlaspi arvense Linn was 1.17%.

Optimization of the Water Extraction Technology of Flavonoids in Emilia Sonchifolia (Linn.) DC

2013 ◽  
Vol 634-638 ◽  
pp. 1016-1021
Author(s):  
Li Sheng Wang ◽  
Wei Wang ◽  
Yan Ge ◽  
Jiangtao Tang
Keyword(s):  
Extraction Yield ◽  
Water Extraction ◽  
Extraction Time ◽  
Single Factor ◽  
Optimum Conditions ◽  
Liquid Ratio ◽  
Extraction Technology ◽  
Orthogonal Experiments ◽  
Solid Liquid

Single factor experiments and orthogonal experiments were successively carried out to optimize the water extraction technology of flavonoids in Emilia sonchifolia (Linn.) DC. The results showed that the influential order of factors was extraction times >solid-liquid ratio >extraction time. The optimum conditions were 15:1 of solid-liquid ratio, 2h of the extraction time and 3 of the extraction times. Under these conditions, the extraction yield of flavonoids from Emilia sonchifolia (Linn.) DC was 3.35%.

scholarly journals Beneficiation of phosphate-siliceous slates via acetic acid

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Yerkebulan Raiymbekov ◽  
Uilesbek Besterekov ◽  
Perizat Abdurazova ◽  
Ulzhalgas Nazarbek ◽  
Galiya Kambarova ◽  
...  
Keyword(s):  
Activation Energy ◽  
Acetic Acid ◽  
Dissolution Time ◽  
Diffusion Region ◽  
Low Grade ◽  
Optimum Conditions ◽  
Liquid Ratio ◽  
Solid Ratio ◽  
Working Parameters ◽  
Solid Liquid

Abstract Low grade phosphate-siliceous slates dump samples (about 11.98% P2O5) from Zhanatas deposit, Karatau basin, Kazakhstan were subjected to upgrading in the present study. The suggested upgrading route was to get rid of most of the inorganic carbonates via leaching using organic acids like acetic acid. The effect of leaching temperature, dissolution time, and solid/liquid ratio were studied as the main determental working parameters. It was concluded that a concentrate product containing about 21% P2O5 was produced after leaching with acetic acid at optimum conditions: 30 C0, 15 min, and 3:1 liquid/solid ratio. The calculated apparent activation energy of the leaching process showed that the process took place in the intra-diffusion region.

scholarly journals Purification of Tea saponins and Evaluation of its Effect on Alcohol Dehydrogenase Activity

2018 ◽  
Vol 13 (1) ◽  
pp. 56-63 ◽  
Author(s):  
Chuanxun Yuan ◽  
Yan Li ◽  
Qingchuan Li ◽  
Risheng Jin ◽  
Lili Ren
Keyword(s):  
Alcohol Dehydrogenase ◽  
Precipitation Method ◽  
Optimum Conditions ◽  
Liquid Ratio ◽  
Potent Effect ◽  
Ethanol Precipitation ◽  
Alcohol Dehydrogenase Activity ◽  
Ftir Spectrometry ◽  
Solid Liquid ◽  
Extraction Agent

AbstractTea saponins, extracted from a Camellia oleifera cake, were found to have a potent effect on de-alcoholic activity. To obtain highly pure tea saponins, which can better maintain the activity of alcohol dehydrogenase (ADH), this paper presents an extraction method for tea saponins using deionized water as the extraction agent and a two-stage precipitation method, including ethanol precipitation and CaO precipitation. The optimum conditions for ethanol precipitation were 95% alcohol, a duration of 1.5h and a solid/liquid ratio of 1:4; while the optimum conditions for CaO precipitation were a duration of 2h and an NH4HCO3/CaO ratio of 2:1. Under the optimum conditions, the content of saponins was 87.58%. The results showed that the greater the amount of tea saponins and the higher its purity, the more significant its activating effect on ADH. When the purity of tea saponins was above 75%, it activated ADH. It indicated that the de-alcoholic mechanism of tea saponins is associated with the activity of ADH. Furthermore, the study characterized the structure of tea saponins by UV absorption and Fourier Transform Infrared (FTIR) spectrometry and LC-MS.

Study on Flavonoids from the Peony Leaves by Ultrasonic Extraction

2011 ◽  
Vol 236-238 ◽  
pp. 2250-2254 ◽  
Author(s):  
Fang Fang Shan ◽  
Hao Guo Tang ◽  
Yan Long Wang ◽  
Mi Mi Guo
Keyword(s):  
Ultrasonic Extraction ◽  
Ultrasonic Power ◽  
Optimum Conditions ◽  
Liquid Ratio ◽  
Orthogonal Factor ◽  
Ultrasonic Time ◽  
Optimum Technology ◽  
Solid Liquid

The extraction of flavonoids from peony leaves was studied recently. We carried out a research on the optimum technology of extracting flavonoids by single and orthogonal factor experiment. Finally we found the optimum conditions were: the ultrasonic temperature is 60 degrees, the ultrasonic time is 20min, the ultrasonic power is 600w, solid-liquid ratio is 1:25. Under this condition, the yield of flavonoids was 1.47% and the content was 8.34%.

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