Chemical and structural optimization of ZnCl2 activated carbons via high temperature CO2 treatment for EDLC applications

2018 ◽  
Vol 43 (40) ◽  
pp. 18607-18616 ◽  
Author(s):  
Kadir Özgün Köse ◽  
Berke Pişkin ◽  
Mehmet Kadri Aydınol
Keyword(s):  
High Temperature ◽  
Structural Optimization ◽  
Activated Carbons ◽  
Co2 Treatment

Use of activated carbon to remove undesirable residual amylase from refinery streams

2017 ◽  
pp. 96-103 ◽  
Author(s):  
Gillian Eggleston ◽  
Isabel Lima ◽  
Emmanuel Sarir ◽  
Jack Thompson ◽  
John Zatlokovicz ◽  
...  
Keyword(s):  
Activated Carbon ◽  
High Temperature ◽  
High Performance ◽  
Activated Carbons ◽  
Amylase Activity ◽  
Sugar Industry ◽  
End User ◽  
Customer Complaints ◽  
Carry Over ◽  
Very High

In recent years, there has been increased world-wide concern over residual (carry-over) activity of mostly high temperature (HT) and very high temperature (VHT) stable amylases in white, refined sugars from refineries to various food and end-user industries. HT and VHT stable amylases were developed for much larger markets than the sugar industry with harsher processing conditions. There is an urgent need in the sugar industry to be able to remove or inactivate residual, active amylases either in factory or refinery streams or both. A survey of refineries that used amylase and had activated carbon systems for decolorizing, revealed they did not have any customer complaints for residual amylase. The use of high performance activated carbons to remove residual amylase activity was investigated using a Phadebas® method created for the sugar industry to measure residual amylase in syrups. Ability to remove residual amylase protein was dependent on the surface area of the powdered activated carbons as well as mixing (retention) time. The activated carbon also had the additional benefit of removing color and insoluble starch.

Sol–gel chemistry in molten Brønsted acids towards “activated” carbons and beyond

Nanoscale ◽  
2019 ◽  
Vol 11 (27) ◽  
pp. 13154-13160
Author(s):  
Burak Koyutürk ◽  
Josh Evans ◽  
Hendrik Multhaupt ◽  
Sören Selve ◽  
Jan Ron Justin Simke ◽  
...  
Keyword(s):  
Phase Separation ◽  
High Temperature ◽  
Activated Carbons ◽  
Chemical Activation ◽  
Sol Gel ◽  
Bronsted Acids ◽  
Carbon Phase

Chemical activation of carbons is usually assigned to an oxidative and dehydrating nature of activating agents. We herein suggest that activating agents rather act as high temperature solvents and the porosity is developed by carbon phase separation.

Modification of Activated Carbon and its Application on Adsorption of UDMH Gas

2013 ◽  
Vol 634-638 ◽  
pp. 1026-1030 ◽  
Author(s):  
Huan Chun Wang ◽  
Xiao Li Gou ◽  
Xiao Meng Lv
Keyword(s):  
Activated Carbon ◽  
High Temperature ◽  
Transition Metal ◽  
Surface Structure ◽  
Functional Groups ◽  
Room Temperature ◽  
Activated Carbons ◽  
Metal Solution ◽  
Modified Activated Carbons

Two kinds of modified activated carbons were prepared by dipping with Zn(NO3)2 solution and by reducing in the atmosphere of N2 at high temperature respectively, which were characterized by FTIR,DSC,SEM and EDS. The surface structure was strongly changed in the process, along with the changes of chemical functional groups. The results of adsorption experiments revealed that the adsorbent capacities of UDMH gas at room temperature were enhanced obviously by modification compared with the raw activated carbon, especially dipped by transition metal solution. The mechanism probably involved was also discussed.

scholarly journals High Temperature Adsorption of Hydrocarbons by Activated Carbons Prepared from Olive Stones

1984 ◽  
Vol 1 (1) ◽  
pp. 103-109 ◽  
Author(s):  
F. J. Lopez-Garzon ◽  
C. Moreno-Castilla ◽  
A. Guerrero-Ruiz ◽  
F. Rodriguez-Reinoso ◽  
J. de D. Lopez-Gonzalez
Keyword(s):  
High Temperature ◽  
Activated Carbons ◽  
Olive Stones

Use of activated carbon to remove undesirable residual amylase from refinery streams

2017 ◽  
pp. 96-103
Author(s):  
Gillian Eggleston ◽  
Isabel Lima ◽  
Emmanuel Sarir ◽  
Jack Thompson ◽  
John Zatlokovicz ◽  
...  
Keyword(s):  
Activated Carbon ◽  
High Temperature ◽  
High Performance ◽  
Activated Carbons ◽  
Amylase Activity ◽  
Sugar Industry ◽  
End User ◽  
Customer Complaints ◽  
Carry Over ◽  
Very High

In recent years, there has been increased world-wide concern over residual (carry-over) activity of mostly high temperature (HT) and very high temperature (VHT) stable amylases in white, refined sugars from refineries to various food and end-user industries. HT and VHT stable amylases were developed for much larger markets than the sugar industry with harsher processing conditions. There is an urgent need in the sugar industry to be able to remove or inactivate residual, active amylases either in factory or refinery streams or both. A survey of refineries that used amylase and had activated carbon systems for decolorizing, revealed they did not have any customer complaints for residual amylase. The use of high performance activated carbons to remove residual amylase activity was investigated using a Phadebas® method created for the sugar industry to measure residual amylase in syrups. Ability to remove residual amylase protein was dependent on the surface area of the powdered activated carbons as well as mixing (retention) time. The activated carbon also had the additional benefit of removing color and insoluble starch.

Temperature Field in Electric Control Unit of Diesel Engine and its Optimization Design

2011 ◽  
Vol 340 ◽  
pp. 76-80
Author(s):  
Zhen Jie Liu ◽  
Yu Long Lei ◽  
Yong Jun Li
Keyword(s):  
Thermal Analysis ◽  
Temperature Field ◽  
High Temperature ◽  
Diesel Engine ◽  
Structural Optimization ◽  
Optimization Design ◽  
High Reliability ◽  
Control Unit ◽  
Operating Conditions ◽  
Electric Control

In order to satisfy the requirements of the high reliability of electric control unit (ECU) of the Diesel Engine, the thermal analysis of ECU was performed by using the software FLOTHERM based on the finite volume method. The temperature field of ECU was obtained under different operating conditions. The structural optimization of ECU was completed to solve the problem of local high temperature. As a result, the operational temperature of ECU is reduced under the allowable limit, and its reliability is improved. The physical experiment shows that the thermal analysis and structural optimization are valid. The local high temperature could be reduced effectively and the operational reliability is improved.

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