Surface-modified spherical activated carbon for high carbon loading and its desalting performance in flow-electrode capacitive deionization

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 69720-69727 ◽  
Author(s):  
Hong-ran Park ◽  
Jiyeon Choi ◽  
Seungcheol Yang ◽  
Sung Jo Kwak ◽  
Sung-il Jeon ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Activated Carbons ◽  
Electrostatic Repulsion ◽  
Capacitive Deionization ◽  
High Carbon ◽  
Spherical Activated Carbon ◽  
High Carbon Loading ◽  
Modified Activated Carbons ◽  
Surface Modified ◽  
Carbon Loading

We fabricated surface modified activated carbons covered with ion-selective polymer. These materials can be used as powerful dispersants and flow electrodes, and improved desalting efficiency by high carbon loading via electrostatic repulsion.

Fluidized bed electrodes with high carbon loading for water desalination by capacitive deionization

2016 ◽  
Vol 4 (10) ◽  
pp. 3642-3647 ◽  
Author(s):  
G. J. Doornbusch ◽  
J. E. Dykstra ◽  
P. M. Biesheuvel ◽  
M. E. Suss
Keyword(s):  
Energy Storage ◽  
Fluidized Bed ◽  
Water Desalination ◽  
Carbon Flow ◽  
Electrochemical Energy Storage ◽  
Capacitive Deionization ◽  
High Carbon ◽  
High Carbon Loading ◽  
Carbon Loading ◽  
Electrochemical Energy

The use of carbon flow electrodes has significantly impacted electrochemical energy storage and capacitive deionization (CDI). We here introduce flowable fluidized bed electrodes with exceptionally high carbon loading, and apply these to water desalination by CDI.

scholarly journals Oxytetracycline Adsorption from Aqueous Solutions on Commercial and High-Temperature Modified Activated Carbons

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3481
Author(s):  
Joanna Lach ◽  
Agnieszka Ociepa-Kubicka ◽  
Maciej Mrowiec
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Activated Carbons ◽  
Electricity Consumption ◽  
Solution Ph ◽  
Carbon Modification ◽  
Modification Method ◽  
Flow Through ◽  
Proposed Modification ◽  
Modified Activated Carbons

The aim of the work was to evaluate the possibility of using commercial and modified activated carbons for the removal of oxytetracycline from aqueous solutions. The kinetics and statics of adsorption as well as the effect of the activated carbon dose and solution pH on the efficiency of the oxytetracycline adsorption were analyzed. Based on the study of oxytetracycline adsorption isotherms, the activated carbons were ranked in the following order: F-300 > WG-12 > Picabiol > ROW08 > WACC 8 × 30 > F-100 > WAZ 0.6–2.4. The most effective activated carbons were characterized by large specific surfaces. The best matching results were obtained for: Redlich–Peterson, Thot and Jovanovic models, and lower for the most frequently used Freundlich and Langmuir models. The adsorption proceeded better from solutions with pH = 6 than with pH = 3 and 10. Two ways of modifying activated carbon were also assessed. A proprietary method of activated carbon modification was proposed. It uses the heating of activated carbon as a result of current flow through its bed. Both carbons modified at 400 °C in the rotary kiln and on the proprietary SEOW (Joule-heat) modification stand enabled to obtain adsorbents with higher and comparable monolayer capacities. The advantage of the proposed modification method is low electricity consumption.

scholarly journals Surface-modified spherical activated carbon materials for pre-combustion carbon dioxide capture

RSC Advances ◽  
2015 ◽  
Vol 5 (42) ◽  
pp. 33681-33690 ◽  
Author(s):  
Nannan Sun ◽  
Chenggong Sun ◽  
Jingjing Liu ◽  
Hao Liu ◽  
Colin E. Snape ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Activated Carbon ◽  
Carbon Materials ◽  
Carbon Dioxide Capture ◽  
Spherical Activated Carbon ◽  
Surface Modified

Carbon beads exhibiting potential in practical pre-combustion CO2 capture were prepared.

Methane Storage on Surface Modified Activated Carbons

2008 ◽  
pp. 73-76
Author(s):  
Seok Min Yun ◽  
Ju Wan Kim ◽  
Hang Kyo Jin ◽  
Young Ho Kim ◽  
Young Seak Lee
Keyword(s):  
Activated Carbons ◽  
Methane Storage ◽  
Modified Activated Carbons ◽  
Surface Modified

Adsorption of Soluble Metal Ions from Red Mud by Modified Activated Carbon

2008 ◽  
Vol 368-372 ◽  
pp. 1541-1544 ◽  
Author(s):  
Hua Lei Zhou ◽  
Dong Yan Li ◽  
Guo Zhuo Gong ◽  
Ya Jun Tian ◽  
Yun Fa Chen
Keyword(s):  
Activated Carbon ◽  
Metal Ions ◽  
Adsorption Capacity ◽  
Red Mud ◽  
Activated Carbons ◽  
Valuable Metal ◽  
Surface Areas ◽  
Alumina Industry ◽  
Modified Activated Carbons ◽  
Almost All

Activated carbon was employed as the adsorption carrier for the metal ions in HCl solution of red mud, a solid waste produced in alumina industry. To improve the adsorption capacity to valuable metal ions, the activated carbon was modified by chemicals including HNO3, H2O2, H2SO4, H3PO4, NH3, Na2CO3, and tri-butyl phosphate (TBP). It was found that the modifications contributed the high adsorption capacity to almost all metal ions we focused on. In the case of TBP, remarkably higher adsorption capacity and selectivity of Sc3+ was observed. The correlation between the surface areas, IR spectra of those chemically modified activated carbons and adsorption was schemed.

Attachment and Growth of Biomass on Surface-Modified Activated Carbon Fibers

1992 ◽  
Vol 26 (3-4) ◽  
pp. 665-671 ◽  
Author(s):  
K. Kutics ◽  
M. Suzuki
Keyword(s):  
Activated Carbon ◽  
Activated Carbons ◽  
Surface Acidity ◽  
Calculated Data ◽  
Bacterial Biomass ◽  
Activated Carbon Fiber ◽  
Continuous Stirred Tank Reactor ◽  
Modified Activated Carbon ◽  
Start Up ◽  
Surface Modified

Activated carbon fiber (ACF) was used as a model of commercial activated carbons to examine the effect of surface chemistry on the attachment behavior of bacterial biomass. Surface acidity was found to enhance the biomass-ACF interaction. When ACFs were applied as biomass support media in a continuous stirred tank reactor, surface acidity of the carbon resulted in faster biomass growth in the start-up phase. The start-up phase was simulated by a simple biomass attachment kinetics model. Experimental and calculated data show a reasonable agreement, with the exception of the hydrogenated specimen, which was interpreted by assuming that the hydrogen-reduced surface is highly reactive and then may undergo oxidation in the initial phase of operation so that the adsorption characteristics are altered.

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.

One-Step Flame Synthesis of Ultrafine SiO2−C Nanocomposite Particles with High Carbon Loading and Their Carbothermal Conversion

2007 ◽  
Vol 46 (12) ◽  
pp. 4273-4281 ◽  
Author(s):  
Andri Vital ◽  
Jörg Richter ◽  
Renato Figi ◽  
Oliver Nagel ◽  
Christos G. Aneziris ◽  
...  
Keyword(s):  
Flame Synthesis ◽  
High Carbon ◽  
Nanocomposite Particles ◽  
Ultrafine Sio2 ◽  
One Step ◽  
High Carbon Loading ◽  
Carbon Loading

Adsorption of CO Gas and Cigarette Smoke Using NiO-Modified Metal Activated Carbon

2020 ◽  
Vol 1000 ◽  
pp. 303-310
Author(s):  
Yuliusman ◽  
Fadel Al Farouq ◽  
Samson Patar Sipangkar ◽  
Mufiid Fatkhurrahman ◽  
Salma Amaliani Putri
Keyword(s):  
Activated Carbon ◽  
Iodine Number ◽  
Cigarette Smoke ◽  
Activated Carbons ◽  
The Body ◽  
Modified Activated Carbon ◽  
Metal Metal ◽  
Adsorption Of Co ◽  
Modified Activated Carbons ◽  
Co Gas

Smoking can cause various ongoing complications in the body. One of the dangerous components of cigarette smoke is carbon monoxide which is one of the most toxic pollutants produced from cigarette gas emissions. Reducing levels in the air can utilize the adsorbent in the form of activated carbon which has the capacity and selectivity to these pollutants. Activated carbon was prepared from corn stalks which were activated by KOH at 750 °C based on previous research. The activated carbon which produced have Iodine number equal to 602 mg/g and SBET reached 599 m2/g. To strengthen the adsorption power, the results of activated carbon will be modified by impregnation of NiO metal. Metal impregnation varied with loading percentage 0.5, 1 and 2%. Modified activated carbons were then characterized by the Iodine Number test, BET test, SEM test, and EDX test. Each of the modified activated carbon will be tested for the capacity and selectivity of adsorption of CO and cigarette smoke. The best modified activated carbon is Mod 0.5% with Iodine number equal to 844 mg/g and SBET reached 839 m2/g. The best adsorption ability is obtained by 0.5% NiO-modified activated carbon which able to reduce CO gas levels by 29.9% and for cigarette smoke reaching 82.16%.

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