A New Approach in Determining Limiting Molar Conductivity value for Liquid Electrolyte

Hanibah, Hussein; Ahmad, Azizan; Hassan, Nur Hasyareeda

doi:10.1016/j.electacta.2014.09.156

Cited by 11 publications

(17 citation statements)

References 22 publications

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“…The inventory of anode materials was calculated according to preparation processes, service lifetime, and cleaning procedure. ,, It was assumed that the cleaning fluid could achieve 90% circulation. Based on experimental data, electricity consumption for degradation during the operation stage was calculated using cell voltage, current density, and reaction time. , The wastes produced from the EO process evaluated in this study were the wasted electrodes. The electrodes were subject to cleaning after reaching their service life, and thus, organic chemicals were removed from the surface of wasted electrodes.…”

Section: Methodsmentioning

confidence: 99%

“…Based on experimental data, 39 electricity consumption for degradation during the operation stage was calculated using cell voltage, current density, and reaction time. 45,46 The wastes produced from the EO process evaluated in this study were the wasted electrodes. The electrodes were subject to cleaning after reaching their service life, and thus, organic chemicals were removed from the surface of wasted electrodes.…”

Section: Life Cycle Inventory Analysismentioning

confidence: 99%

See 1 more Smart Citation

Prospective Life Cycle Assessment for the Electrochemical Oxidation Wastewater Treatment Process: From Laboratory to Industrial Scale

Sun

Bai

Wang

et al. 2023

Environ. Sci. Technol.

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Electrochemical oxidation (EO) is a promising technology for water purification, but indirect environmental burdens may arise in association with consumption of materials and energy during electrode preparation and process operation. This study evaluated the life cycle environmental impacts of emerging EO technology from laboratory scale to industrial scale using prospective life cycle assessment (LCA) on a quantitative basis. Environmental impacts of EO technology were assessed at laboratory scale by comparing three representative anode materials (SnO 2 , PbO 2 , and boron-doped diamond) and other two typical processes (adsorption and Fenton method), which verified the competitiveness of the EO process and identified the key factors to environmental hotspots. Thereafter, LCA of scale-up EO was performed to offer guidance for practical application, and the life cycle inventory was compiled upon thermodynamic and kinetic simulations, empirical calculation rules, and similar technical information. Results demonstrated EO to be effective for destructing recalcitrant organic pollutants, but visible direct benefits might be outweighed by increased indirect environmental burdens associated with the preparation of anode materials, use of electrolytes, and energy consumption during the operation stage at both laboratory scale and larger scale. This necessitated attention to overall life cycle profiles by taking into account reactor design, anode materials, electrolyte and flow pattern, and decentralized location with a large share of renewable power station and rigorous contamination control strategies for wastewater treatment plants.

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Section: Methodsmentioning

confidence: 99%

Section: Life Cycle Inventory Analysismentioning

confidence: 99%

Prospective Life Cycle Assessment for the Electrochemical Oxidation Wastewater Treatment Process: From Laboratory to Industrial Scale

Sun

Bai

Wang

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…The power-law method was used because the molar conductivity of the electrolyte became almost constant below a certain level of concentration (approximately ≈ 10 −6 ) and due to the weak electrolyte system as well. The power-law method is composed of a double-logarithmic plot of

(molar conductivity) versus the mol in Equation (2) [ 25 ]:

where

o is the infinite molar conductivity,

is the degree of dissociation, and

is conductivity at respective concentration. K′ is the intercept, and γ is the slop of the double-logarithmic plot.…”

Section: Characterizationmentioning

confidence: 99%

Effect of Active Site Modification towards Performance Enhancement in Biopolymer κ-Carrageenan Derivatives

et al. 2020

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This research demonstrates a one-step modification process of biopolymer carrageenan active sites through functional group substitution in κ-carrageenan structures. The modification process improves the electronegative properties of κ-carrageenan derivatives, leading to enhancement of the material’s performance. Synthesized succinyl κ-carrageenan with a high degree of substitution provides more active sites for interaction with analytes. The FTIR analysis of succinyl κ-carrageenan showed the presence of new peaks at 1068 cm−1, 1218 cm−1, and 1626 cm−1 that corresponded to the vibrations of C–O and C=O from the carbonyl group. A new peak at 2.86 ppm in 1H NMR represented the methyl proton neighboring with C=O. The appearance of new peaks at 177.05 and 177.15 ppm in 13C NMR proves the substitution of the succinyl group in the κ-carrageenan structure. The elemental analysis was carried out to calculate the degree of substitution with the highest value of 1.78 at 24 h of reaction. The XRD diffractogram of derivatives exhibited a higher degree of crystallinity compared to pristine κ-carrageenan at 23.8% and 9.2%, respectively. Modification of κ-carrageenan with a succinyl group improved its interaction with ions and the conductivity of the salt solution compared to its pristine form. This work has a high potential to be applied in various applications such as sensors, drug delivery, and polymer electrolytes.

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“…Peningkatan darjah penceraian ion dengan pertambahan kepekatan garam juga dibuktikan dengan peningkatan nilai kemudahgerakan ion LiNO 3 dalam rantai karboksimetil kitosan seperti yang ditunjukkan dalam Jadual 1. Nilai kemudahgerakan ion ini diukur menggunakan Hukum Kuasa pada (2) (Hanibah et al 2014) dengan , µ', dan ° serta C garam masing-masing mewakili kekonduksian elektrolit, kemudahgerakan ion, kecerunan daripada graf serta kepekatan garam. Seterusnya, nilai kemudahgerakan bagi kation dan anion dikira menggunakan (3) dan (4) dengan µ + dan µadalah nilai kemudahgerakan kation dan anion, µ + dan µadalah nilai relatif kemudahgerakan kation dan anion di dalam keadaan akueus serta µ adalah jumlah kemudahgerakan.…”

Section: Keputusan Dan Perbincangan Kajian Kekonduksian Ion Pada Suhuunclassified

Kesan Garam Litium Nitrat terhadap Sifat Elektrokimia Karboksimetil Kitosan

Mobarak

Jantan

Dzulkurnain

et al. 2018

JSM

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Karboksimetil kitosan menunjukkan potensi untuk digunakan sebagai polimer induk bagi aplikasi elektrolit polimer pepejal. Kesan garam litium nitrat terhadap sifat elektrokimia elektrolit polimer pepejal berasaskan karboksimetil kitosan telah dijalankan. Elektrolit polimer pepejal berasaskan karboksimetil kitosan disediakan melalui teknik pengacuan larutan dengan nisbah garam litium nitrat (LiNO 3) yang berbeza. Pencirian filem telah dijalankan dengan menggunakan spektroskopi inframerah transformasi Fourier-pantulan penuh kecil (ATR-FTIR) dan Spektroskopi Impedans Elektrokimia (EIS) bagi penentuan interaksi kimia dan sifat elektrokimia polimer elektrolit tersebut. Spektrum ATR-FTIR menunjukkan ion litium cenderung untuk berinteraksi dengan kumpulan karbonil dan kumpulan ester dalam struktur karboksimetil kitosan. Kekonduksian ion tertinggi yang dicapai adalah 8.44 × 10-4 S cm-1 dengan kepekatan garam 30 bt. % LiNO 3 pada suhu bilik dan 5.25 × 10-3 S cm −1 pada suhu 70°C. Filem karboksimetil kitosan-30% LiNO 3 mencapai kestabilan secara elektrokimia sehingga 2.94 V. Keputusan kajian yang diperoleh menunjukkan elektrolit polimer pepejal berasaskan karboksimetil kitosan memberi satu tarikan baru bagi aplikasi bateri ion litium.

show abstract

A New Approach in Determining Limiting Molar Conductivity value for Liquid Electrolyte

Cited by 11 publications

References 22 publications

Prospective Life Cycle Assessment for the Electrochemical Oxidation Wastewater Treatment Process: From Laboratory to Industrial Scale

Prospective Life Cycle Assessment for the Electrochemical Oxidation Wastewater Treatment Process: From Laboratory to Industrial Scale

Effect of Active Site Modification towards Performance Enhancement in Biopolymer κ-Carrageenan Derivatives

Kesan Garam Litium Nitrat terhadap Sifat Elektrokimia Karboksimetil Kitosan

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