Hydrothermal Assisted Microwave Pyrolysis of Water Hyacinth for Electrochemic...drboon
We develop ‘green’ approach to prepare conductive carbon material from water hyacinth (Eichhornia crassipes) powder for use in electrochemical capacitor device. The features on morphology, crystallography and surface functionality were analyzed based on SEM, XRD and FTIR instrumentation, respectively. The electrical conductivities were measured using four-point probe. Electrochemical properties were studied using cyclic voltammetry. SEM analyses indicated the existence of nanoparticles in the carbon samples. XRD analysis showed that carbon sample had sharp peaks indicating crystallite carbon and sylvite. FTIR analysis showed that the carbon have common surface functionalities which also can be found in other conductive carbon samples. The electrical conductivities test showed that the carbon had 0.001–1.5 S cm-1 of conductivity. The shape of the cyclic voltammograms were typical for carbon electrode that use in electrochemical capacitor.
M.Sc. Chemical Engineering Thesis Defense (Omer Farooqi)Omer Farooqi
This is the presentation for my M.Sc. research thesis. I worked on a novel electrode preparation method to carry out voltammetry in order to detect heavy metals in water.
Growth and Characterization of Barium doped Potassium Hydrogen Phthalate Sing...IJERA Editor
The Non Linear Optical materials have acquired new significance with the advent of a large number of devices
utilizing solid state Laser sources. Potassium Hydrogen Phthalate one of the Non Linear Optical material having
superior non linear optical properties has been exploited for variety of application. In the present work, KHP
single crystals were grown by slow evaporation technique with Barium metal ion as a dopant. The grown
crystals were subjected to powder XRD analysis and the result shows that the Ba2+ ions does not alter the crystal
structure, but it enter into the crystal lattice of pure KHP. The optical transparency of the grown crystal was
studied by UV-Visible spectroscopy, the molecular structure was confirmed by FTIR analysis and its thermal
stability by TG/DTA analysis. The improved SHG efficiency of barium doped Potassium Hydrogen Phthalate
crystal could enhance the nonlinearity behaviour. In addition to this, the electrical parameter such as dielectric
constant was studied in detail.
Synthesis of flower-like magnetite nanoassembly: Application in the efficient...Pawan Kumar
A facile approach for the synthesis of magnetite microspheres with flower-like morphology is reported
that proceeds via the reduction of iron(III) oxide under a hydrogen atmosphere. The ensuing magnetic
catalyst is well characterized by XRD, FE-SEM, TEM, N2 adsorption-desorption isotherm, and
Mössbauer spectroscopy and explored for a simple yet efficient transfer hydrogenation reduction of a
variety of nitroarenes to respective anilines in good to excellent yields (up to 98%) employing hydrazine
hydrate. The catalyst could be easily separated at the end of a reaction using an external magnet and
can be recycled up to 10 times without any loss in catalytic activity.
Hydrothermal Assisted Microwave Pyrolysis of Water Hyacinth for Electrochemic...drboon
We develop ‘green’ approach to prepare conductive carbon material from water hyacinth (Eichhornia crassipes) powder for use in electrochemical capacitor device. The features on morphology, crystallography and surface functionality were analyzed based on SEM, XRD and FTIR instrumentation, respectively. The electrical conductivities were measured using four-point probe. Electrochemical properties were studied using cyclic voltammetry. SEM analyses indicated the existence of nanoparticles in the carbon samples. XRD analysis showed that carbon sample had sharp peaks indicating crystallite carbon and sylvite. FTIR analysis showed that the carbon have common surface functionalities which also can be found in other conductive carbon samples. The electrical conductivities test showed that the carbon had 0.001–1.5 S cm-1 of conductivity. The shape of the cyclic voltammograms were typical for carbon electrode that use in electrochemical capacitor.
M.Sc. Chemical Engineering Thesis Defense (Omer Farooqi)Omer Farooqi
This is the presentation for my M.Sc. research thesis. I worked on a novel electrode preparation method to carry out voltammetry in order to detect heavy metals in water.
Growth and Characterization of Barium doped Potassium Hydrogen Phthalate Sing...IJERA Editor
The Non Linear Optical materials have acquired new significance with the advent of a large number of devices
utilizing solid state Laser sources. Potassium Hydrogen Phthalate one of the Non Linear Optical material having
superior non linear optical properties has been exploited for variety of application. In the present work, KHP
single crystals were grown by slow evaporation technique with Barium metal ion as a dopant. The grown
crystals were subjected to powder XRD analysis and the result shows that the Ba2+ ions does not alter the crystal
structure, but it enter into the crystal lattice of pure KHP. The optical transparency of the grown crystal was
studied by UV-Visible spectroscopy, the molecular structure was confirmed by FTIR analysis and its thermal
stability by TG/DTA analysis. The improved SHG efficiency of barium doped Potassium Hydrogen Phthalate
crystal could enhance the nonlinearity behaviour. In addition to this, the electrical parameter such as dielectric
constant was studied in detail.
Synthesis of flower-like magnetite nanoassembly: Application in the efficient...Pawan Kumar
A facile approach for the synthesis of magnetite microspheres with flower-like morphology is reported
that proceeds via the reduction of iron(III) oxide under a hydrogen atmosphere. The ensuing magnetic
catalyst is well characterized by XRD, FE-SEM, TEM, N2 adsorption-desorption isotherm, and
Mössbauer spectroscopy and explored for a simple yet efficient transfer hydrogenation reduction of a
variety of nitroarenes to respective anilines in good to excellent yields (up to 98%) employing hydrazine
hydrate. The catalyst could be easily separated at the end of a reaction using an external magnet and
can be recycled up to 10 times without any loss in catalytic activity.
2017 ACS Spring National Meeting Presentation SlidesTianyu Liu
Improving the Capacitance of Graphene Aerogel Electrodes via a Facile Ion-intercalation Strategy (oral presentation, ENFL #162, 253rd ACS National Meeting, San Francisco, CA, 2017)
2017 MRS Spring Meeting Presentation SlidesTianyu Liu
Three-dimensional Nitrogen-doped Graphene Aerogels Enhance Power Density of Microbial Fuel Cells (oral presentation, NM3.1.06, 2017 MRS Spring Meeting and Exhibit, Phoenix, AZ, 2017)
2017 ACS Spring National Meeting Presentation SlidesTianyu Liu
Manipulate the Chemical Composition and Substrate Nature to Push the Cycling Stability Limit of Polypyrrole (oral presentation, ENFL #114, 253rd ACS National Meeting, San Francisco, CA, 2017)
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
IOSR Journal of Applied Chemistry (IOSR-JAC) is an open access international journal that provides rapid publication (within a month) of articles in all areas of applied chemistry and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in Chemical Science. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Metal-organic hybrid: Photoreduction of CO2 using graphitic carbon nitride su...Pawan Kumar
A novel heteroleptic iridium complex supported on graphitic carbon nitride was synthesized and used
for photoreduction of carbon dioxide under visible light irradiation. The methanol yield obtained after
24 h irradiation was 9934 mmol g1cat (TON 1241 with respect to Ir) by using triethylamine (TEA) as a
sacrificial donor, which was significantly higher as compared to the semiconductor carbon nitride
145 mmol g1cat under identical conditions. The presence of triethylamine was found to be vital for the
higher methanol yield. After the reaction, the photocatalyst could easily be recovered and reused for
subsequent six runs without significant loss in photo activity.
Metal-organic hybrid: Photoreduction of CO2 using graphitic carbon nitride su...Pawan Kumar
A novel heteroleptic iridium complex supported on graphitic carbon nitride was synthesized and used
for photoreduction of carbon dioxide under visible light irradiation. The methanol yield obtained after
24 h irradiation was 9934 mmol g1cat (TON 1241 with respect to Ir) by using triethylamine (TEA) as a
sacrificial donor, which was significantly higher as compared to the semiconductor carbon nitride
145 mmol g1cat under identical conditions. The presence of triethylamine was found to be vital for the
higher methanol yield. After the reaction, the photocatalyst could easily be recovered and reused for
subsequent six runs without significant loss in photo activity.
Metal-organic hybrid: Photoreduction of CO2 using graphitic carbon nitride su...Pawan Kumar
A novel heteroleptic iridium complex supported on graphitic carbon nitride was synthesized and used for photoreduction of carbon dioxide under visible light irradiation. The methanol yield obtained after 24 h irradiation was 9934 μmol g−1cat (TON 1241 with respect to Ir) by using triethylamine (TEA) as a sacrificial donor, which was significantly higher as compared to the semiconductor carbon nitride 145 μmol g−1cat under identical conditions. The presence of triethylamine was found to be vital for the higher methanol yield. After the reaction, the photocatalyst could easily be recovered and reused for subsequent six runs without significant loss in photo activity.
Water-splitting photoelectrodes consisting of heterojunctions of carbon nitri...Pawan Kumar
Quinary and senary non-stoichiometric double perovskites such as Ba2Ca0.66Nb1.34-xFexO6-δ (BCNF) have been utilized for gas sensing, solid oxide fuel cells and thermochemical CO2 reduction. Herein, we examined their potential as narrow bandgap semiconductors for use in solar energy harvesting. A cobalt co-doped BCNF, Ba2Ca0.66Nb0.68Fe0.33Co0.33O6-δ (BCNFCo), exhibited an optical absorption edge at ~ 800 nm, p-type conduction and a distinct photoresponse upto 640 nm while demonstrating high thermochemical stability. A nanocomposite of BCNFCo and g-C3N4 (CN) was prepared via a facile solvent assisted exfoliation/blending approach using dichlorobenzene and glycerol at a moderate temperature. The exfoliation of g-C3N4 followed by wrapping on perovskite established an effective heterojunction between the materials for charge separation. The conjugated 2D sheets of CN enabled better charge migration resulting in increased photoelectrochemical performance. A blend composed of 40 wt% perovskite and CN performed optimally, whilst achieving a photocurrent density as high as 1.5 mA cm-2 for sunlight-driven water-splitting with a Faradaic efficiency as high as ~ 88%.
Visible light assisted reduction of nitrobenzenes using Fe(bpy)3+2/rGOnanocom...Pawan Kumar
Visible-light-induced photocatalytic reduction of aromatic nitrobenzenes to the corresponding anilinesat room temperature using reduced graphene oxide (rGO) immobilized iron(II) bipyridine complex asphotocatalyst is described. The rGO-immobilized iron catalyst exhibited superior catalytic activity thanhomogeneous iron(II) bipyridine complex and much higher than metal free rGO photocatalysts. Theheterogeneous photocatalyst was found to be robust and could easily be recovered and reused for severalruns without any significant loss in photocatalytic activity.
Electrochemical Degradation of Methylen Blue Using Carbon Composite Electrode...iosrjce
Electrochemical oxidation of methylene blue using carbon composite electrode in sodium chloride
solution have been done. The aim of this work was to degradation of methylen blue using the direct oxidation in
undivided electrolysis cell. Carbon composite electrode was prepare by C powder and PVC in 4 mL
tetrahydrofuran (THF) solvent and swirled flatly to homogeneous followed by drying in an oven at 100 °C for 3
h. The mixture was placed in stainless steel mould and pressed at 10 ton/cm2
. Sodium chloride was used
electrolyte solution. The effects of the current and electrolysis time were investigated using cyclic voltammetry,
spectrophotometer UV-Visible and gas chromatography mass spectrometry (GC-MS). The experimental results
showed that the carbon composite electrode have higher effect in the electrochemical degradation of methylene
blue. Based on UV-visible spectra and GC-MS analysis also shows current and electrolysis time for
degradation of methylene blue optimum at 1,5 A and 60 minute, respectively. As a conclusions is this method its
simple equipment, easy operation and friendly for environmental.
2017 ACS Spring National Meeting Presentation SlidesTianyu Liu
Improving the Capacitance of Graphene Aerogel Electrodes via a Facile Ion-intercalation Strategy (oral presentation, ENFL #162, 253rd ACS National Meeting, San Francisco, CA, 2017)
2017 MRS Spring Meeting Presentation SlidesTianyu Liu
Three-dimensional Nitrogen-doped Graphene Aerogels Enhance Power Density of Microbial Fuel Cells (oral presentation, NM3.1.06, 2017 MRS Spring Meeting and Exhibit, Phoenix, AZ, 2017)
2017 ACS Spring National Meeting Presentation SlidesTianyu Liu
Manipulate the Chemical Composition and Substrate Nature to Push the Cycling Stability Limit of Polypyrrole (oral presentation, ENFL #114, 253rd ACS National Meeting, San Francisco, CA, 2017)
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
IOSR Journal of Applied Chemistry (IOSR-JAC) is an open access international journal that provides rapid publication (within a month) of articles in all areas of applied chemistry and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in Chemical Science. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Metal-organic hybrid: Photoreduction of CO2 using graphitic carbon nitride su...Pawan Kumar
A novel heteroleptic iridium complex supported on graphitic carbon nitride was synthesized and used
for photoreduction of carbon dioxide under visible light irradiation. The methanol yield obtained after
24 h irradiation was 9934 mmol g1cat (TON 1241 with respect to Ir) by using triethylamine (TEA) as a
sacrificial donor, which was significantly higher as compared to the semiconductor carbon nitride
145 mmol g1cat under identical conditions. The presence of triethylamine was found to be vital for the
higher methanol yield. After the reaction, the photocatalyst could easily be recovered and reused for
subsequent six runs without significant loss in photo activity.
Metal-organic hybrid: Photoreduction of CO2 using graphitic carbon nitride su...Pawan Kumar
A novel heteroleptic iridium complex supported on graphitic carbon nitride was synthesized and used
for photoreduction of carbon dioxide under visible light irradiation. The methanol yield obtained after
24 h irradiation was 9934 mmol g1cat (TON 1241 with respect to Ir) by using triethylamine (TEA) as a
sacrificial donor, which was significantly higher as compared to the semiconductor carbon nitride
145 mmol g1cat under identical conditions. The presence of triethylamine was found to be vital for the
higher methanol yield. After the reaction, the photocatalyst could easily be recovered and reused for
subsequent six runs without significant loss in photo activity.
Metal-organic hybrid: Photoreduction of CO2 using graphitic carbon nitride su...Pawan Kumar
A novel heteroleptic iridium complex supported on graphitic carbon nitride was synthesized and used for photoreduction of carbon dioxide under visible light irradiation. The methanol yield obtained after 24 h irradiation was 9934 μmol g−1cat (TON 1241 with respect to Ir) by using triethylamine (TEA) as a sacrificial donor, which was significantly higher as compared to the semiconductor carbon nitride 145 μmol g−1cat under identical conditions. The presence of triethylamine was found to be vital for the higher methanol yield. After the reaction, the photocatalyst could easily be recovered and reused for subsequent six runs without significant loss in photo activity.
Water-splitting photoelectrodes consisting of heterojunctions of carbon nitri...Pawan Kumar
Quinary and senary non-stoichiometric double perovskites such as Ba2Ca0.66Nb1.34-xFexO6-δ (BCNF) have been utilized for gas sensing, solid oxide fuel cells and thermochemical CO2 reduction. Herein, we examined their potential as narrow bandgap semiconductors for use in solar energy harvesting. A cobalt co-doped BCNF, Ba2Ca0.66Nb0.68Fe0.33Co0.33O6-δ (BCNFCo), exhibited an optical absorption edge at ~ 800 nm, p-type conduction and a distinct photoresponse upto 640 nm while demonstrating high thermochemical stability. A nanocomposite of BCNFCo and g-C3N4 (CN) was prepared via a facile solvent assisted exfoliation/blending approach using dichlorobenzene and glycerol at a moderate temperature. The exfoliation of g-C3N4 followed by wrapping on perovskite established an effective heterojunction between the materials for charge separation. The conjugated 2D sheets of CN enabled better charge migration resulting in increased photoelectrochemical performance. A blend composed of 40 wt% perovskite and CN performed optimally, whilst achieving a photocurrent density as high as 1.5 mA cm-2 for sunlight-driven water-splitting with a Faradaic efficiency as high as ~ 88%.
Visible light assisted reduction of nitrobenzenes using Fe(bpy)3+2/rGOnanocom...Pawan Kumar
Visible-light-induced photocatalytic reduction of aromatic nitrobenzenes to the corresponding anilinesat room temperature using reduced graphene oxide (rGO) immobilized iron(II) bipyridine complex asphotocatalyst is described. The rGO-immobilized iron catalyst exhibited superior catalytic activity thanhomogeneous iron(II) bipyridine complex and much higher than metal free rGO photocatalysts. Theheterogeneous photocatalyst was found to be robust and could easily be recovered and reused for severalruns without any significant loss in photocatalytic activity.
Electrochemical Degradation of Methylen Blue Using Carbon Composite Electrode...iosrjce
Electrochemical oxidation of methylene blue using carbon composite electrode in sodium chloride
solution have been done. The aim of this work was to degradation of methylen blue using the direct oxidation in
undivided electrolysis cell. Carbon composite electrode was prepare by C powder and PVC in 4 mL
tetrahydrofuran (THF) solvent and swirled flatly to homogeneous followed by drying in an oven at 100 °C for 3
h. The mixture was placed in stainless steel mould and pressed at 10 ton/cm2
. Sodium chloride was used
electrolyte solution. The effects of the current and electrolysis time were investigated using cyclic voltammetry,
spectrophotometer UV-Visible and gas chromatography mass spectrometry (GC-MS). The experimental results
showed that the carbon composite electrode have higher effect in the electrochemical degradation of methylene
blue. Based on UV-visible spectra and GC-MS analysis also shows current and electrolysis time for
degradation of methylene blue optimum at 1,5 A and 60 minute, respectively. As a conclusions is this method its
simple equipment, easy operation and friendly for environmental.
TREATING WASTE WATER USING ELECTROCOAGULATION APPROACHIAEME Publication
Performance of Electro coagulation method is evaluated by treating various
sources of water. The electrodes of stainless steel are used for arranging electrolytic
cell. The treatment efficiency is assessed by varying electrical potential and
concentration time. The parameters namely pH, Total Dissolved Solids (TDS), Total
Hardness, Electrical Conductivity, Biochemical Oxygen Demand (BOD) and
Chemical Oxygen Demand (COD) were tested and results were compared to assess
the performance of treatment process. Effects of operating parameters such as
varying electrical potential (3V-12V) and concentration time (10 minutes- 30 minutes)
were evaluated for optimum operating conditions. The result shown that identified
electrolytic arrangement is significantly efficient for treating BOD and COD when
compared to other water quality parameters especially for grey and industrial water
samples. The highest removal efficiency under optimum operating condition for COD
and BOD removal were obtained with 58% and 67% in grey water sample whereas in
industrial waste water sample, the efficiencies are 53% and 57%. Further, the study
suggested the various simulations in the operating parameters with the economic
considerations to optimize the findings and for upcoming progress in the application
of this advanced technology.
Removal of turbidity using electrocoagulationeSAT Journals
Abstract Electrocoagulation (EC) is a technique involving the electrolytic addition of coagulating metal ions directly from electrodes, this electrode also known as sacrificial electrode. These ions work as a coagulating agent in the water, similar manner to the addition of chemicals such as alum and ferric chloride. Electrode allows the easier removal of the turbidity. In this study experimental investigation is carried out to removal of turbidity using electrocoagulation method with the help of aluminum electrodes in a batch reactor. Several working parameters, such as pH, current density, and operating time were varied to achieve a higher removal efficiency of turbidity. Two type of water sample were used1) synthetic turbid water and 2) back wash water synthetic water was made from crushed sand with initial turbidity of 200 NTU whereas back wash water was collected from Nigadi water treatment plant . Current intensity was varied from 2 to 6 A. and detention time between 5 to 20 minutes with pH range from pH 3 to pH 11. The removal efficiencies for synthetic turbidity were found about 91% at 6A for 20 minutes at neutral pH, whereas removal efficiencies for backwash water were found about 89% at 6A for 20 minutes at neutral pH. The results of the study indicated that the turbidity can be removed effectively by EC process using Al electrodes. Keywords: Electrocoagulation, sacrificial electrode, Turbidity, Water Treatment
1. Poster template by ResearchPosters.co.za
Fouling of carbon electrode by humic substance and its
cleaning in capacitive deionization
Wannacha Limthanakul, Taeyoung Kim, Seoni Kim, Jeyong Yoon
School of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul, Korea
Introduction
Objectives
Experimental Works
Results
Summary
Carbon Electrode
Carbon Electrode
+
-
+
+
+
+-
-
-
-
- - - - -
+
+ + + + + + +
- -
Treated WaterConcentrated Water
Anode
Cathode
Fig. 1. Schematic diagram of CDI process
Capacitive deionization (CDI) is a technology for
desalination and water treatment in which ions are removed from
water by applying an electric field between two porous (carbon)
electrodes.
Advantages:
- Environmentally clean technology
- Energy and cost saving
- Simply operating
Further study need
Because electrode materials used in CDI has been
fabricated from high-surface area carbon, the accumulation of
organic material could effect the electrode property contributed to
diminish the CDI performance.
Fig. 2. Accumulation of organic matter on carbon surface
Source: wateensolutions.com.au
⧄ To investigate the effects of organic matter to CDI
performance.
⧄ To investigate the electrochemical property change of the
electrodes after organic fouling.
⧄ For organic fouling remediation, chemical cleaning approach
has been applied to observe the recovery of CDI performance.
⧄ Carbon Electrodes:
Materials: Activated carbon YP50 + Super P + PTFE
Fabrication: Rolling Press method(RP)
⧄ Dissolved Organic Solution
100 mg/L of Humic Acid(HA)
⧄ Soaking period
24 hr
100 mg/L of Humic Acid
Roller
Roller
Carbon
mixture
50 mm
0.3 mm
(a) (b)
Fig. 3. Schematic of organic fouling on carbon electrode. (a)
electrodes were fabricated by RP method. (b) Fabricated electrodes
were soaked in humic acid solution for 24 hr.
Desalination
⧄ Reactor
CDI cell : Flow type
⧄ Feed Solution
NaCl : 10 mM
⧄ Operating Conditions
Applied potential : 1.2 V
Cycle time :
5 min charging, 5 min discharging 5 cycles
Flow rate
10 ml/min
Organic fouling
Potentiostat
Outlet
Conductivity meter
CDI cell
NaCl 10mM
Peristaltic pump
Graphite sheet
Graphite sheet
Electrode
Electrode
Spacers
Fig. 4. Schematic of experimental system for desalination
⧄ Cleaning agent: 10 mM of
NaOH
⧄ Cleaning time: 10,25 and 50 min
Fouling Remediation
(1) Effect of organic fouling to desalination performance and
electrochemical property of electrodes
(a)
(b)
Fig. 5. Desalination performance of HA fouled electrode and virgin
carbon electrode: (a) ion removal aspect; (b) amount of
accumulated ion removal during charging step
Electrodes Specific
Capacitance
(F/g carbon)
Virgin YP50 81
HA fouled 73
Fig. 6. Cyclic voltammograms of HA fouled electrode and virgin
electrode.
(2) Recovery of desalination performance and electrochemical
property by alkaline cleaning agent(NaOH)
(a)
(b)
Fig. 7. Desalination performance of HA fouled electrode and
different time cleaned electrodes. : (a) ion removal aspect; (b)
amount of accumulated ion removal during charging step
Electrodes Capacitance
(F/g carbon)
Virgin YP50 81
Fouled YP50 73
10 min cleaning 78
25 min cleaning 77
50 min cleaning 91
Fig. 8. Cyclic voltammograms of HA fouled electrode and different
time cleaned electrodes.
⧄ The deionization performance after operating with HA fouled
electrodes was significantly declined Decreasing in amount of
ion removal (11 3 mg/g) and capacitance (8173 F/g)
⧄ The deionization performance and capacitance were recovered by
10 mM of NaOH as a cleaning agent for 50 min.
⧄ In particular, the capacitance became higher than the virgin
electrode after cleaning.
Contact Information
Biofilm Engineering Laboratory
env.snu.ac.kr
302 Bld. Room No.513(5th
floor)
Tel: 82-2-880-8941
Fax: 82-2-876-8911
Email: wannachalimthan@snu.ac.kr
Acknowledgments
This research was supported by WCU (World Class University)
program through the Korea Science and Engineering Foundation by
the Ministry of Education, Science and Technology (R31-10013),
and also supported by Korea Ministry of Environment as
“Converging technology project” (223-111-003).