Asymmetric configuration of pseudocapacitive composite and rGO electrodes for enhanced capacitive deionization

2020 ◽  
Vol 6 (2) ◽  
pp. 392-403 ◽  
Author(s):  
Hammad Younes ◽  
Linda Zou
Keyword(s):  
Adsorption Capacity ◽  
Adsorption Rate ◽  
Capacitive Deionization ◽  
Set Up ◽  
Asymmetric Configuration

Three different asymmetric electrode configurations were set up in CDI experiments. Each electrode pair's performance on salt adsorption capacity and average salt adsorption rate was investigated and compared.

A 3D ordered hierarchically porous non-carbon electrode for highly effective and efficient capacitive deionization

2019 ◽  
Vol 7 (26) ◽  
pp. 15633-15639 ◽  
Author(s):  
Yuchen Wu ◽  
Gaopeng Jiang ◽  
Guihua Liu ◽  
Gregory Lui ◽  
Zachary Paul Cano ◽  
...  
Keyword(s):  
Titanium Nitride ◽  
Adsorption Capacity ◽  
Porous Titanium ◽  
Adsorption Rate ◽  
Carbon Electrode ◽  
Capacitive Deionization ◽  
Hierarchically Porous ◽  
Highly Effective ◽  
Ordered Porous

A nanoengineered 3D hierarchical ordered porous titanium nitride electrode is applied as an effective and efficient non-carbon electrode to deliver outstanding salt adsorption capacity and record-breaking salt adsorption rate in a capacitive deionization cell.

scholarly journals Biochar of Spent Coffee Grounds as Per Se and Impregnated with TiO2: Promising Waste-Derived Adsorbents for Balofloxacin

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2295
Author(s):  
Marwa El-Azazy ◽  
Ahmed S. El-Shafie ◽  
Hagar Morsy
Keyword(s):  
Adsorption Capacity ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Spent Coffee Grounds ◽  
Thermal Stabilities ◽  
Coffee Grounds ◽  
Bet Analysis ◽  
Pseudo Second Order ◽  
Set Up ◽  
Adsorption Desorption

Biochars (BC) of spent coffee grounds, both pristine (SCBC) and impregnated with titanium oxide (TiO2@SCBC) were exploited as environmentally friendly and economical sorbents for the fluroquinolone antibiotic balofloxacin (BALX). Surface morphology, functional moieties, and thermal stabilities of both adsorbents were scrutinized using SEM, EDS, TEM, BET, FTIR, Raman, and TG/dT analyses. BET analysis indicated that the impregnation with TiO2 has increased the surface area (50.54 m2/g) and decreased the pore size and volume. Batch adsorption experiments were completed in lights of the experimental set-up of Plackett-Burman design (PBD). Two responses were maximized; the % removal (%R) and the adsorption capacity (qe, mg/g) as a function of four variables: pH, adsorbent dosage (AD), BALX concentration ([BALX]), and contact time (CT). %R of 68.34% and 91.78% were accomplished using the pristine and TiO2@SCBC, respectively. Equilibrium isotherms indicated that Freundlich model was of a perfect fit for adsorption of BALX onto both adsorbents. Maximum adsorption capacity (qmax) of 142.55 mg/g for SCBC and 196.73 mg/g for the TiO2@SCBC. Kinetics of the adsorption process were best demonstrated using the pseudo-second order (PSO) model. The adsorption-desorption studies showed that both adsorbents could be restored with the adsorption efficiency being conserved up to 66.32% after the fifth cycles.

scholarly journals Using Microfluidic Set-Up to Determine the Adsorption Rate of Sporosarcina pasteurii Bacteria on Sandstone

2020 ◽  
Vol 132 (2) ◽  
pp. 283-297 ◽  
Author(s):  
Tom Marzin ◽  
Brice Desvages ◽  
Adama Creppy ◽  
Louis Lépine ◽  
Annette Esnault-Filet ◽  
...  
Keyword(s):  
Adsorption Rate ◽  
Sporosarcina Pasteurii ◽  
Set Up

scholarly journals Ginger Straw Waste-Derived Porous Carbons as Effective Adsorbents toward Methylene Blue

Molecules ◽  
2019 ◽  
Vol 24 (3) ◽  
pp. 469 ◽  
Author(s):  
Wenlin Zhang ◽  
Huihe Li ◽  
Jianmin Tang ◽  
Hongjia Lu ◽  
Yiqing Liu
Keyword(s):  
Methylene Blue ◽  
Porous Materials ◽  
Adsorption Capacity ◽  
Adsorption Rate ◽  
Dye Wastewater ◽  
Porous Carbons ◽  
High Adsorption ◽  
New Approach ◽  
High Adsorption Capacity

In this work, ginger straw waste-derived porous carbons, with high adsorption capacity, high adsorption rate, and good reusability for removing the toxic dye of methylene blue from wastewater, were prepared by a facile method under oxygen-limiting conditions. This study opens a new approach for the utilization of ginger straw waste, and the porous materials can be employed as great potential adsorbents for treating dye wastewater.

scholarly journals CO2 Adsorption and Desorption by Waste Ion-Exchange Resin–Based Activated Carbon on Fixed Bed

2021 ◽  
Vol 9 ◽  
Author(s):  
Mengqi Wei ◽  
Qiuyue Zhao
Keyword(s):  
Activated Carbon ◽  
Ion Exchange ◽  
Adsorption Capacity ◽  
Gas Flow ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Adsorption Rate ◽  
Adsorption And Desorption ◽  
Product Gas ◽  
Adsorption Temperature

The waste ion-exchange resin–based activated carbon (WIRAC) was utilized for CO2 adsorption. The effect of adsorption temperature, gas flow, CO2 concentration, and adsorbent filling content on CO2 adsorption properties of WIRAC and the effect of desorption temperature and sweep gas flow on CO2 desorption performances of WIRAC were researched. In the adsorption process, with the increase of adsorption temperature, the CO2 adsorption capacity and adsorption rate decrease; as the gas flow increases, the CO2 adsorption capacity decreases, but the adsorption rate increases; with the increase of CO2 concentration and adsorbent filling content, the CO2 adsorption capacity and adsorption rate both increase. In the desorption process, the higher the desorption temperature and the smaller the sweep gas flow, the higher the CO2 purity of product gas and the longer the desorption time. In order to make sure the adsorbent be used efficiently and the higher CO2 concentration of product gas, the adsorption and desorption conditions selected should be a suitable choice.

scholarly journals Nitrogen-doped graphene–TiOxNy nanocomposite electrode for highly efficient capacitive deionization

RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 28186-28193 ◽  
Author(s):  
Yuchen Wu ◽  
Gaopeng Jiang ◽  
Qian Li ◽  
Zisheng Zhang ◽  
Zhongwei Chen
Keyword(s):  
Adsorption Capacity ◽  
Capacitive Deionization ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

A nanocomposite electrode of nitrogen-doped graphene and titanium oxynitride is applied as an effective and efficient electrode to deliver outstanding salt adsorption capacity in a flow-by capacitive deionization (CDI) cell.

Amyloid-Like Assembly Converting Commercial Proteins to Water-Insoluble Adsorbents with Ultrahigh Adsorption Capacity and Ultrafast Adsorption Rate for Uranium Extraction

2021 ◽  
Author(s):  
Hao Ye ◽  
Chang Liu ◽  
Ming-Bang Wu ◽  
Lu-Lin Ma ◽  
Shi-Cheng Liu ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Nuclear Industry ◽  
Adsorption Rate ◽  
Uranium Extraction ◽  
Promising Strategy

Uranium extraction from seawater was regarded as the most promising strategy for solving the concerns in the increasing demands during the nuclear industry. Inspired by the functional proteins of natural...

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