Discussion on Activated Carbon Regeneration Method

2014 ◽  
Vol 641-642 ◽  
pp. 1127-1130 ◽  
Author(s):  
Guo Ping Wang
Keyword(s):  
Carbon Dioxide ◽  
Activated Carbon ◽  
Wet Oxidation ◽  
Supercritical Carbon Dioxide Extraction ◽  
Thermal Regeneration ◽  
Electrochemical Regeneration ◽  
Oxidation Method ◽  
Carbon Dioxide Extraction ◽  
Chemical Regeneration ◽  
Carbon Regeneration

As an effective adsorbent, activated carbon is widely used in the treatment of wastewater. Describes some of the regeneration of activated carbon for reference: thermal regeneration method, chemical regeneration, biological regeneration method, electrochemical regeneration, regeneration ozone oxidation, wet oxidation regeneration shown, supercritical carbon dioxide extraction regeneration, regeneration of catalytic oxidation method, microwave and ultrasonic regeneration and so on.

Research on Environment Materials with Progress on Regeneration of Active Carbon

2014 ◽  
Vol 540 ◽  
pp. 235-238
Author(s):  
Xin Zhong Liu ◽  
Yong Jie Huang ◽  
Ze Ran Cheng ◽  
Wei Liao
Keyword(s):  
Activated Carbon ◽  
Microwave Radiation ◽  
Supercritical Fluid ◽  
Active Carbon ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Thermal Regeneration ◽  
Electrochemical Regeneration ◽  
Advantages And Disadvantages ◽  
Chemical Regeneration

Now activated carbon has been used greatly in all walks of life, thus the regeneration of spent activated carbon is of great significance. The advantages and disadvantages of the regeneration methods of the spent activated carbon are introduced and discussed in this paper, mainly including thermal regeneration, chemical regeneration, electrochemical regeneration, microwave radiation regeneration, wet air oxidation and supercritical fluid regeneration etc. Then a new recycling method of the spent activated carbon is proposed.

scholarly journals Supercritical Fluid Extraction of Pyrrolidine Alkaloid from Leaves of Piper amalago L.

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
V. S. Carrara ◽  
L. C. Filho ◽  
V. A. S. Garcia ◽  
V. S. Faiões ◽  
E. F. Cunha-Júnior ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Orthogonal Array ◽  
Design Matrix ◽  
Supercritical Carbon Dioxide Extraction ◽  
Orthogonal Array Design ◽  
Fluid Extraction ◽  
Array Design ◽  
Carbon Dioxide Extraction

Supercritical fluid extraction was used to extract the alkaloid N-[7-(3′,4′-methylenedioxyphenyl)-2(Z),4(Z)-heptadienoyl]pyrrolidine from leaves of Piper amalago L. A three-level orthogonal array design matrix, OAD OA9(34), was used for optimization of the parameters of supercritical extraction of the alkaloid, employing supercritical carbon dioxide: extraction time (20, 40, and 60 min), temperature (40, 50, and 60°C), pressure (150, 200, and 250 bar), and the use of cosolvents (ethanol, methanol, and propyleneglycol). All parameters had significant effect on the alkaloid yield. The alkaloid yield after 60 min of extraction without cosolvents at 9 different conditions (32) in terms of temperature (40, 50, and 60°C) and pressure (150, 200, and 250 bar) was also evaluated. The optimal yield (≈3.8 mg g−1) was obtained with supercritical CO2 + methanol (5% v : v) at 40°C and 200 bar for 60 min of extraction.

Study on Thermal Regeneration for Caffeine-Saturated Activated Carbon

2013 ◽  
Vol 781-784 ◽  
pp. 1941-1944 ◽  
Author(s):  
Zhao You Zhu ◽  
Li Li Wang ◽  
Wan Ling Wang ◽  
Ying Long Wang
Keyword(s):  
Activated Carbon ◽  
Carbon Layer ◽  
Carbon Surface ◽  
Optimum Conditions ◽  
Gas Velocity ◽  
Thermal Regeneration ◽  
Regeneration Time ◽  
Before And After ◽  
Carbon Regeneration ◽  
Carrier Gas Velocity

Waste activated carbon (AC) containing caffeine was produced during the process of the production for caffeine. The process of treatment caffeine-saturated AC using thermal regeneration was explored and factors on the regeneration of activated carbon were investigated. The optimum conditions obtained were: temperature is 650 °C, the regeneration time is 180 min, the carrier gas velocity is 0.002 m/s, carbon layer thickness is 0.1 m. Under these conditions, activated carbon regeneration efficiency reached 90.3%. In addition, the pore structure of activated carbon before and after regeneration was characterized and the activated carbon surface area and pore size distribution under optimum conditions were determined by the adsorption isotherms.

Sign in / Sign up

Export Citation Format

Share Document