scholarly journals Enhanced desalination efficiency of flow-through capacitive deionization cell by mesh electrode with granular aerogel carbon in the removal of ions from synthetic and real samples

2021 ◽  
Author(s):  
Bahram Roshan ◽  
Hassan Rasoulzadeh ◽  
Mohamadreza Massoudinejad ◽  
Mohsen Saadani ◽  
Daryoush Sanaei
Keyword(s):  
Cellular Structure ◽  
Soluble Solids ◽  
Total Hardness ◽  
Capacitive Deionization ◽  
Optimal Conditions ◽  
Initial Amount ◽  
Input Concentration ◽  
Real Samples ◽  
Sodium Calcium ◽  
Flow Through

Abstract Flow-through capacitive deionization (FTCDI) is a traditional improved flow-by CDI cellular structure, used to remove ions from aqueous solutions. In this study, a new FTCDI was designed consisting of mesh electrodes (ME) containing ion-exchange membranes (IEM) and aerogel carbon granules with a specific surface area of 489 m2/g. All analyses and experiments performed showed that the new design can remove nitrate, phosphate, sodium, calcium, and chloride. Under optimal conditions, the new FTCDI system can remove 82.5, 49, 85, and 90% of sodium chloride, calcium chloride, nitrate, and phosphate with a maximum input concentration of 450 mg/L, 450 mg/L, 70 mg/L, and 3 mg/L, respectively. The efficiency of this system was also evaluated for real samples. Findings of the study showed that if the initial amount of turbidity is 12 NTU, total soluble solids (TDS) 1,700 mg/L, total hardness 540 mg/L, phosphate 0.09 mg/L, nitrate 28.8 mg/L, and electrical conductivity (EC) 3,480 μs/cm, the system can remove 25, 23.5, 33.3, 66.6, 54.4, and 39.1%, respectively.

MnO2 decorated porous carbon derived from Enteromorpha prolifera as flow-through electrode for dual-mode capacitive deionization

Desalination ◽  
2021 ◽  
Vol 504 ◽  
pp. 114977
Author(s):  
Yong Liu ◽  
Bo Geng ◽  
Yuchen Zhang ◽  
Xin Gao ◽  
Xin Du ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Capacitive Deionization ◽  
Enteromorpha Prolifera ◽  
Dual Mode ◽  
Flow Through

In situ creating interconnected pores across 3D graphene architectures and their application as high performance electrodes for flow-through deionization capacitors

2016 ◽  
Vol 4 (13) ◽  
pp. 4908-4919 ◽  
Author(s):  
Hui Wang ◽  
Tingting Yan ◽  
Peiying Liu ◽  
Guorong Chen ◽  
Liyi Shi ◽  
...  
Keyword(s):  
High Performance ◽  
Capacitive Deionization ◽  
3D Graphene ◽  
Flow Through ◽  
Interconnected Pores

3D graphene architectures with ample micro-/mesopores across the highly interconnected macroporous walls exhibit a good performance in capacitive deionization.

Removal of nitrate using activated carbon-based electrodes for capacitive deionization

2018 ◽  
Vol 18 (6) ◽  
pp. 2028-2034 ◽  
Author(s):  
Shaojie Jiang ◽  
Hongwu Wang ◽  
Guanquan Xiong ◽  
Xinlei Wang ◽  
Siying Tan
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Flow Rate ◽  
Nitrate Removal ◽  
Cell Voltage ◽  
Solution Concentration ◽  
Capacitive Deionization ◽  
Optimal Conditions ◽  
Ion Removal ◽  
Initial Solution Concentration

Abstract The removal performance of nitrate using capacitive deionization (CDI) of activated carbon (AC)-based electrodes were studied. The AC electrode was prepared and the effect of cell voltage, flow rate and initial solution concentration on ion removal were investigated. Furthermore, the AC was modified with phosphoric acid (ACP) and the surface structure of AC and ACP were analyzed. The results showed that the specific surface area of AC increased by 10.71% after the modification. The mesopore ratio and micropore ratio increased by 14.69% and 24.06%, respectively. The optimal conditions of AC electrode was a voltage of 1.4 V and flow rate of 20 mL/min while the ACP electrode was a voltage of 1.4 V and flow rate of 10 mL/min. The electrosorption capacity of ACP electrode was improved and the unit of electrosorption load was high to 19.28 mg/L. For the AC or ACP electrode, the nitrate removal efficiency decreases with the increase in the initial feed solutions, but the unit electrosorption load gradually increased with the improvement of initial feed solutions' concentration and the ACP electrode was superior to the AC electrode. Therefore, the ACP electrode would be suitable for the application of CDI on the nitrate removal.

Electrocatalytic redox behavior of graphene films towards acebutolol hydrochloride determination in real samples

2016 ◽  
Vol 40 (4) ◽  
pp. 3763-3772 ◽  
Author(s):  
Atmanand M. Bagoji ◽  
Sharanappa T. Nandibewoor
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Limit Of Detection ◽  
Graphene Film ◽  
Carbon Electrode ◽  
Redox Behavior ◽  
Optimal Conditions ◽  
Modified Glassy Carbon Electrode ◽  
Real Samples ◽  
Graphene Films

Under optimal conditions, a graphene film modified glassy carbon electrode exhibited a longer linearity range from 3.36 to 57.12 ng mL−1 of acebutolol with a limit of detection of 0.131 ng mL−1.

scholarly journals Enzymatic Treatment of Soft Jackfruit (Artocarpus heterophyllus) Pulp With Two Commercial Pectinases: Physical Properties and Viscosity Analysis

2021 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Edinara Lacerda Queiroz ◽  
Tamires Bastos De Almeida ◽  
Sílvia Maria Almeida de Souza ◽  
Ernesto Acosta Martinez
Keyword(s):  
Enzyme Concentration ◽  
Enzyme Hydrolysis ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Optimal Conditions ◽  
Color Intensity ◽  
Artocarpus Heterophyllus ◽  
Dependent Variables ◽  
Solids Content ◽  
Hydrolysis Of

The aim of this study was to investigate the effect of enzyme hydrolysis of jackfruit pulp using two commercial pectinase enzyme solutions with different polygalacturonase activities. A 2³ factorial design, with three repetitions at the central point, was used to establish the optimal conditions of jackfruit pulp hydrolysis, evaluating the effect of time (20 - 100 min), temperature (30 - 60ºC) and enzyme concentration (0.01 - 0.09%). The dependent variables viscosity, yield, soluble solids content, color intensity, shade, and turbidity were the responses evaluated. Viscosity, color intensity, shade, and turbidity of the pulps were significantly influenced by all studied variables with the determination coefficients (R2) between 0.74 and 0.99. The lack of adjustment was not significant in the models that describe the previous properties. The highest enzyme concentration (0.09%) was the factor with the greatest influence on the studied responses, regardless of the pectinase type.

MoC nanoparticle-embedded carbon nanofiber aerogels as flow-through electrodes for highly efficient pseudocapacitive deionization

2020 ◽  
Vol 8 (3) ◽  
pp. 1443-1450 ◽  
Author(s):  
Yong Liu ◽  
Yue Zhang ◽  
Yuchen Zhang ◽  
Qing Zhang ◽  
Xin Gao ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Carbon Nanofiber ◽  
Capacitive Deionization ◽  
Highly Efficient ◽  
Flow Through ◽  
First Time

Highly efficient pseudo-capacitive deionization systems equipped with flow-through electrodes are developed for the first time based on the utilization of MoC nanoparticle-embedded carbon nanofiber aerogels as electrode materials.

A direct comparison of flow-by and flow-through capacitive deionization

Desalination ◽  
2018 ◽  
Vol 444 ◽  
pp. 169-177 ◽  
Author(s):  
E. Marielle Remillard ◽  
Amit N. Shocron ◽  
John Rahill ◽  
Matthew E. Suss ◽  
Chad D. Vecitis
Keyword(s):  
Capacitive Deionization ◽  
Flow Through

Rocking-chair capacitive deionization with flow-through electrodes

2020 ◽  
Vol 8 (17) ◽  
pp. 8476-8484 ◽  
Author(s):  
Yong Liu ◽  
Xin Gao ◽  
Kai Wang ◽  
Xinyue Dou ◽  
Haiguang Zhu ◽  
...  
Keyword(s):  
Carbon Nanofiber ◽  
Capacitive Deionization ◽  
Flow Through ◽  
First Time ◽  
Coated Carbon

Flow-through Rocking-chair Capacitive Deionization system with ultrahigh desalination rate is built for the first-time, in which sodium-pre-intercalated MnO2 coated carbon nanofiber aerogels are employed as the flow-through electrode.

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