Biofabrication of gold/activated carbon/polyvinyl alcohol (Au/Ac/PVA) polymer sheet and its application in seawater desalination

2018 ◽  
Vol 135 ◽  
pp. 94-100
Author(s):  
Samia S. Abouelkheir ◽  
Nermeen A. El-Sersy ◽  
Soraya A. Sabry
Keyword(s):  
Activated Carbon ◽  
Polyvinyl Alcohol ◽  
Seawater Desalination ◽  
Polymer Sheet

scholarly journals Asymmetric supercapacitor based on nanostructured graphene foam/polyvinyl alcohol/formaldehyde and activated carbon electrodes

2015 ◽  
Vol 273 ◽  
pp. 305-311 ◽  
Author(s):  
Abdulhakeem Bello ◽  
Farshad Barzegar ◽  
Damilola Momodu ◽  
Julien Dangbegnon ◽  
Fatemeh Taghizadeh ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Polyvinyl Alcohol ◽  
Carbon Electrodes ◽  
Asymmetric Supercapacitor ◽  
Graphene Foam

A redox mediator doped gel polymer as an electrolyte and separator for a high performance solid state supercapacitor

2015 ◽  
Vol 3 (7) ◽  
pp. 4035-4041 ◽  
Author(s):  
Guofu Ma ◽  
Miaomiao Dong ◽  
Kanjun Sun ◽  
Enke Feng ◽  
Hui Peng ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Sulfuric Acid ◽  
Solid State ◽  
Polyvinyl Alcohol ◽  
High Performance ◽  
Indigo Carmine ◽  
Polymer System ◽  
Redox Mediator ◽  
Gel Electrolyte

A stable and effective redox-mediator gel electrolyte has been prepared by doping indigo carmine (IC) into a polyvinyl alcohol sulfuric acid polymer system (PVA–H2SO4), and a high performance solid state supercapacitor is fabricated by utilizing activated carbon as electrodes and the prepared gel polymer (PVA–H2SO4–IC) as an electrolyte and separator.

Evaluating Capacitive Deionization for Measurements of the Salt-Removal of NaCl, KCl and MgCl at Various Cell Voltages

2015 ◽  
Vol 1112 ◽  
pp. 271-274 ◽  
Author(s):  
Diky Anggoro ◽  
Endarko
Keyword(s):  
Activated Carbon ◽  
Carbon Black ◽  
Polyvinyl Alcohol ◽  
Flow Rate ◽  
Glutaric Acid ◽  
Carbon Electrodes ◽  
Cross Linking ◽  
Capacitive Deionization ◽  
Submersible Pump

Carbon electrodes have been successfully synthesized and characterized for desalination system based on Capacitive Deionization (CDI) technology. The carbon electrodes were synthesized with an activated carbon (700 – 1400 m2/g), carbon black, glutaric acid and polyvinyl alcohol as a binder using cross-linking method at 120 °C. The study was to investigate salt removal percentage value of 0.1 M NaCl, MgCl and KCl using CDI cell. A solution with 0.1 M was supplied to the cell using a Boyu Submersible pump (model SP-601) at a flow rate of 10 mL/min. When potentials of 1.0, 2.0, and 3.0 V were applied to the CDI cell, the result showed that a solution of 0.1 M KCl has greater salt-removal percentage than the solutions with 0.1 M NaCl and MgCl. The salt-removal percentage of KCl was achieved at 55% for 3.0 V whilst resulted in 20 and 30% for NaCl and MgCl, respectively.

scholarly journals Adsorption of Polydisperse Polyvinyl Alcohol Molecules on the Surface of Activated Carbons

2003 ◽  
Vol 21 (5) ◽  
pp. 463-473
Author(s):  
J. Barkauskas ◽  
A. Vinslovaite
Keyword(s):  
Activated Carbon ◽  
Polyvinyl Alcohol ◽  
Functional Groups ◽  
Adsorption Process ◽  
Activated Carbons ◽  
Surface Heterogeneity ◽  
Raw Material ◽  
Carbon Substrate ◽  
Gel Chromatography ◽  
Graphene Layers

The adsorption of polyvinyl alcohol (PVA) on activated carbons was studied in aqueous solutions. Each batch of activated carbon produced was obtained via a definite number of technological operations using wood as the raw material. The adsorption process was studied using a gel chromatography technique with potentiometric titrations being employed for evaluating the chemical composition of the activated carbons produced. The data obtained from the various activated carbon samples were compared to ascertain the adsorption mechanism. It was concluded that water molecules had a limited influence on the competitive process of polymer adsorption. A rather pronounced negative correlation between the number of phenol functional groups and PVA adsorption capacity was observed, indicating that these groups hindered the adsorption process. Assumptions concerning the role of phenol functional groups were made, taking into account not only the surface heterogeneity but also changes in the electron density of the graphene layers in the carbon substrate.

Immobilized Bio-Beads with Activated Carbon Fiber for Removal of Benzene

2010 ◽  
Vol 96 ◽  
pp. 93-98 ◽  
Author(s):  
Xiu Li Liu ◽  
Lin Zhao ◽  
She Jiang Liu ◽  
Lu Hua You
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Activated Carbon ◽  
Carbon Fiber ◽  
Polyvinyl Alcohol ◽  
Calcium Alginate ◽  
Activated Carbon Fiber ◽  
Carrier Material ◽  
Removal Process ◽  
Scanning Electron

Two kinds of new immobilized bio-beads in gel were produced with calcium alginate, polyvinyl alcohol and activated carbon fiber. Scanning electron microscopy was used to detect the microstructure and MB were applied to enhance degradation of benzene. It shows that activated carbon fiber was a excellent carrier material to increase MB stability and enhance the degradation of benzene by changing the microsructure. CA-MB in this study was characteristic of loose interface, intensely homogeneous holes and well-reusability. 80% of benzene could be reduced after120h and removal tallied with one-order knetics.Otherwise,for PVA-MB, it possed more compact ouside and irregular tunnles and poles inside.Benzene removal process was analysed to compose of absorption and biodegradation.The immobilization inoculum of 137.77mg/L was optimal with the most stabilities and the best degradation capability for both CA-MB and PVA-MB. Moreover, it is the addition of ACF as encapsulated carrier that made CA-MB superior to PVA-MB in benzene removal and reutilization.

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