Symmetrical electrode of active carbon powder for capacitive deionization – surface modified aluminum plate as current collector

The adsorption of methyl orange dye from aqueous solution was investigated with active carbon powder as sorbents. Effects of selected factors were studied through the use of L16 (44) orthogonal experiment for the optimal parameter. The results demonstrated that the orders of their influences were contact time > initial dye concentration > the dosage of active carbon powder > pH. It was then concluded that contact time must be given priority in removing methyl orange dye from wastewater. Under the optimum conditions (the dosage 10g, time70min, initial dye concentration 35mg/L, pH7), The active carbon powder possessed good adsorption capacity to methyl orange which the removal efficiency could reached 95.96%.

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The Removal of Deinking Wastewater Using Neutralization, Activated Carbon, and Hydrogen Peroxide Oxidation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.779-780.1547 ◽

2013 ◽

Vol 779-780 ◽

pp. 1547-1551

Author(s):

Xiu Guo Lu ◽

Feng Li ◽

Pei Pei Yan ◽

Yan Jiao Che

Keyword(s):

Hydrogen Peroxide ◽

Activated Carbon ◽

Active Carbon ◽

Mass Fraction ◽

Carbon Powder ◽

Peroxide Oxidation ◽

Active Carbon Powder ◽

Color Unit ◽

Catalytic Experiment ◽

Hydrogen Peroxide Oxidation

Treatment of deinking wastewater with neutralization, activated carbon, and hydrogen peroxide oxidation is investigated. Discusses the various factors of the neutralization experiment and catalytic experiment on the influence of the experimental results. The results show that for the 20mL deinking wastewater, first neutralize it to pH=4 with dilute sulfuric acid, then the mass fraction of 0.8mLH2O2 (mass fraction of 30%) and 0.8g active carbon powder in oxidative 19min under conditions of pH=3 with an optimum addition of 0.8mg H2O2 (30%) as well as 0.8g active carbon powder, the CODcr can be reduced from 31000mg/L to 2300 mg/L, and the color unit can be reduced from 15000 to 0 after treatment ,its CODcr and color unit decrease significantly and the removal rates reach 90% and 100% respectively.

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Fabrication of a carbon electrode using activated carbon powder and application to the capacitive deionization process

Separation and Purification Technology ◽

10.1016/j.seppur.2009.10.023 ◽

2010 ◽

Vol 70 (3) ◽

pp. 362-366 ◽

Cited By ~ 111

Author(s):

Jae-Hwan Choi

Keyword(s):

Activated Carbon ◽

Carbon Powder ◽

Carbon Electrode ◽

Capacitive Deionization

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Application of surface-modified carbon powder in microbial fuel cells

Chinese Journal of Catalysis ◽

10.1016/s1872-2067(14)60023-1 ◽

2014 ◽

Vol 35 (5) ◽

pp. 770-775 ◽

Cited By ~ 8

Author(s):

Gaixiu Yang ◽

Yongming Sun ◽

Zhenhong Yuan ◽

Pengmei Lü ◽

Xiaoying Kong ◽

...

Keyword(s):

Fuel Cells ◽

Microbial Fuel Cells ◽

Carbon Powder ◽

Surface Modified

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

RSC Advances ◽

10.1039/c6ra02480g ◽

2016 ◽

Vol 6 (74) ◽

pp. 69720-69727 ◽

Cited By ~ 34

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.

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Arsenic removal from groundwater using low-cost carbon composite electrodes for capacitive deionization

Water Science & Technology ◽

10.2166/wst.2016.135 ◽

2016 ◽

Vol 73 (12) ◽

pp. 3064-3071 ◽

Cited By ~ 6

Author(s):

Ju-Young Lee ◽

Nantanee Chaimongkalayon ◽

Jinho Lim ◽

Heung Yong Ha ◽

Seung-Hyeon Moon

Keyword(s):

Arsenic Removal ◽

Vinylidene Fluoride ◽

Electrochemical Impedance ◽

Low Cost ◽

Carbon Composite ◽

Carbon Powder ◽

Capacitive Deionization ◽

Composite Electrodes ◽

Solution Ph ◽

Eis Measurements

Abstract Affordable carbon composite electrodes were developed to treat low-concentrated groundwater using capacitive deionization (CDI). A carbon slurry prepared using activated carbon powder (ACP), poly(vinylidene fluoride), and N-methyl-2-pyrrolidone was employed as a casting solution to soak in a low-cost porous substrate. The surface morphology of the carbon composite electrodes was investigated using a video microscope and scanning electron microscopy. The capacitance and electrical conductivity of the carbon composite electrodes were then examined using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), respectively. According to the CV and EIS measurements, the capacitances and electrical conductivities of the carbon composite electrodes were in the range of 8.35–63.41 F g–1 and 0.298–0.401 S cm–1, respectively, depending on ACP contents. A CDI cell was assembled with the carbon composite electrodes instead of with electrodes and current collectors. The arsenate removal test included an investigation of the optimization of several important operating parameters, such as applied voltage and solution pH, and it achieved 98.8% removal efficiency using a 1 mg L–1 arsenate solution at a voltage of 2 V and under a pH 9 condition.

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Studies on the Desalination of NaCl Solution with Activated Carbon Coating Electrodes by Electrosorption and Kinetic Analysis

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.581-582.743 ◽

2012 ◽

Vol 581-582 ◽

pp. 743-746

Author(s):

Yan Zhao ◽

Xiao Min Hu ◽

Wei Li ◽

Bin Hui Jiang

Keyword(s):

Activated Carbon ◽

Kinetic Analysis ◽

Carbon Coating ◽

Vinylidene Fluoride ◽

Current Collector ◽

Graphite Powder ◽

Carbon Powder ◽

Sem Image ◽

Poly Vinylidene Fluoride ◽

Cell Reactor

In this paper a promising electrosorption approach called capacitive deionization(CDI) was discussed to relieve the crisis of water resources shortage.A simple CDI cell reactor was fabricated to study the performance of electrosorption experiments.A mixture containing activated carbon powder(ACP),binder poly vinylidene fluoride(PVDF) and conductive graphite powder at the mass ratio of 8:1:1(%) was dissolved in di-methylacetamide(DMAc) to form a slurry,then the slurry was cast on the current collector to manufacture activated carbon coating electrodes. The surface morphology and electrochemical performance of obtained electrodes were characterized using SEM and cyclic voltammetry(CV).From the SEM image,the electrodes were irregular grid-like porous materials,and both ACP and PVDF binder were bound together.The results of CV indicated that the electric double layer was existing and the specific capacitance was calculated.The adsorption rate and capacity of NaCl onto activated carbon coating electrodes at different bias potentials were measured and the electrosorption kinetics were also investigated.The kinetic analysis demonstrated that the electrosorption of NaCl on the activated carbon coating electrodes conformed to pseudo-first-order kinetics model.

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