A Boron‐Doped Diamond Anode for the Electrochemical Removal of Parabens in Low‐Conductive Solution: From a Conventional Flow Cell to a Solid Polymer Electrolyte System

2020 ◽  
Vol 7 (1) ◽  
pp. 314-319 ◽  
Author(s):  
Jihen Abidi ◽  
Youssef Samet ◽  
Marco Panizza ◽  
Carlos A. Martinez‐Huitle ◽  
M. Paola Carpanese ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Solid Polymer Electrolyte ◽  
Flow Cell ◽  
Solid Polymer ◽  
Electrolyte System ◽  
Boron Doped Diamond ◽  
Boron Doped ◽  
Electrochemical Removal

scholarly journals Chlorpyrifos removal: Nb/boron-doped diamond anode coupled with solid polymer electrolyte and ultrasound irradiation

2020 ◽  
Vol 18 (2) ◽  
pp. 1391-1399
Author(s):  
Andrea Luca Tasca ◽  
Davide Clematis ◽  
Marco Panizza ◽  
Sandra Vitolo ◽  
Monica Puccini
Keyword(s):  
Polymer Electrolyte ◽  
Solid Polymer Electrolyte ◽  
Groundwater Remediation ◽  
Insect Pests ◽  
Ultrasound Irradiation ◽  
Electrochemical Reactor ◽  
Solid Polymer ◽  
Boron Doped Diamond ◽  
Boron Doped ◽  
Incomplete Removal

AbstractChlorpyrifos is an organophosphorus insecticide, acaricide and miticide used worldwide for the control of soil-borne insect pests. It must be considered as a substance of growing concern, given its use, toxicity, environmental occurrence, and potential for regional to long-range atmospheric transport. Considering the incomplete removal attained by conventional water treatment processes, we investigated the efficiency of electrolytic radicals production and sonoelectrolysis on the degradation of the pesticide. The treatment has been conducted in a novel electrochemical reactor, equipped with a boron-doped diamond anode and a solid polymer electrolyte (SPE). Different current intensity and times have been tested and coupled with sonication at 40 kHz. Up to 69% of chlorpyrifos was completely removed in 10 min by electrolysis operated at 0.1 mA, while 12.5% and 5.4% was converted into the treatment intermediates 3,5,6-trichloro-2-pyridinol (TCP) and diethyl (3,5,6-trichloropyridin-2-yl) phosphate, respectively. Ultrasound irradiation did not enhance the removal efficiency, likely due to mass transport limitations, while the energy consumption increased from 8.68∙10− 6 to 9.34∙10− 4 kWh µg− 1 removed. Further research is encouraged, given the promising processing by the SPE technology of low conductivity solutions, as pharmaceuticals streams, as well as the potential for water and in-situ groundwater remediation from different emerging pollutants as phytosanitary and personal care products.

scholarly journals Highly Conductive Redox-Couple Solid Polymer Electrolyte System: Blend-KI-I2 for Dye-Sensitized Solar Cells

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Ravindra Kumar Gupta ◽  
Hee-Woo Rhee
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Solid Polymer Electrolyte ◽  
Dye Sensitized Solar Cells ◽  
Weight Fraction ◽  
Redox Couple ◽  
Solid Polymer ◽  
Equal Weight ◽  
Electrolyte System ◽  
Dye Sensitized

Ionic conductivity of a redox-couple solid polymer electrolyte system, () blend: [0.9KI : 0.1I2] with in weight fraction, is reported. A blend of poly(ethylene oxide) (abbreviated as PEO) and succinonitrile in equal weight fraction was used as a polymeric matrix instead of the PEO and succinonitrile because of its low-cost, electrical conductivity superior to the PEO, and thermal stability better than the succinonitrile. The electrolyte with showed ionic conductivity of S cm−1 and iodine ion diffusivity of nearly  cm2 s−1 at 25°C. The conductivity and diffusivity values were nearly two orders of magnitude higher than those of the PEO-KI-I2 due to the improved PEO crystallinity. It also exhibited dye-sensitized solar cell efficiency of 2.2% at 100 mW cm−2, which is twice of the cell prepared using the PEO-KI-I2 only.

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