Heats of adsorption for charcoal nitrogen systems

Prasad, Madhu; Akkimaradi, Basavaraj S.; Rastogi, Shantanu; Rao, Radhika Rani; Srinivasan, Kandadai

doi:10.1016/s0008-6223(99)00161-x

Cited by 14 publications

(13 citation statements)

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“…In these pores the adsorbate, let us assume concretely N 2 at 77 K, may only interact with at most 2 graphitic plates, with a maximum adsorption energy of nearly 4 kcal/mol for very narrow pores. However, calorimetric measurements of the differential heat of adsorption at very low pressures report values near 6 kcal/mol [9][10][11][12], which means that an adsorbate molecule may be interacting simultaneously with three graphitic plates. On the other hand, high resolution STM images of AC treated with digital techniques [13,14] show clearly that AC have generally a quite disordered porous structure and that there are a relevant quantity of sites where an adsorbate molecule will be interacting simultaneously with three graphitic walls.…”

Section: Introductionmentioning

confidence: 99%

Characterization of activated carbons from peach stones through the mixed geometry model

Maia

Sapag

Toso

et al. 2010

Microporous and Mesoporous Materials

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Section: Introductionmentioning

confidence: 99%

Characterization of activated carbons from peach stones through the mixed geometry model

Maia

Sapag

Toso

et al. 2010

Microporous and Mesoporous Materials

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“…Isosteric heat of adsorption is traditionally expressed as a function of concentration as its dependence on temperature is relatively weak [18,19]. Clausius-Clapeyron equation is commonly used to estimate heat of adsorption assuming ideal gas at constant concentration as given by Eq.…”

Section: D-a Model With Volume Correctionmentioning

confidence: 99%

Adsorption isotherms and kinetics of HFC410A onto activated carbons

Askalany

Saha

Ismail

2014

Applied Thermal Engineering

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Experimental and theoretical adsorption isotherms and kinetics data of HFC410A onto activated carbons are reported. Activated carbon powder of type Maxsorb III and activated carbon fiber of type A-20 have been used as adsorbents. An experimental apparatus has been designed and built and experimental investigation has been carried out at five adsorption temperatures in the range of 10-50ºC. Experimental data has been fitted with Tóth and Dubinin-Astakhov (D-A) adsorption isotherm models and linear driving force (LDF) adsorption kinetics model. A range of adsorption parameters such as isosteric heat of adsorption, adsorption uptake and temperature dependence and Henry's law coefficients are © 2014. This manuscript version is made available under the Elsevier user license http://www.elsevier.com/open-access/userlicense/1.0/ 2 evaluated. A correlation between Henry's law coefficients and isosteric heat of adsorption at limiting uptake is analyzed.

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“…It is a major contributor to the heating inventories of adsorption refrigeration and gas storage systems and also cooling requirements of adsorption heat pumps. Isosteric heat of adsorption is traditionally expressed as a function of concentration as its dependency on temperature is relatively weak (16,17). Clausius-Clapeyron equation is commonly used to estimate the heat of adsorption at a constant concentration, as given by Eq.…”

Section: Heat Of Adsorptionmentioning

confidence: 99%

Adsorption Desalination: A Novel Method

El-Sharkawy

Saha

et al. 2010

Membrane and Desalination Technologies

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The search for potable water for quenching global thirst remains a pressing concern throughout many regions of the world. The demand for new and sustainable sources and the associated technologies for producing fresh water are intrinsically linked to the solving of potable water availability and hitherto, innovative and energy efficient desalination methods seems to be the practical solutions. Quenching global thirst by adsorption desalination is a practical and inexpensive method of desalinating the saline and brackish water to produce fresh water for agriculture irrigation, industrial, and building applications. This chapter provides a general overview of the adsorption fundamentals in terms of adsorption isotherms, kinetics, and heat of adsorption. It is then being more focused on the principles of thermally driven adsorption desalination methods. The recent developments of adsorption desalination plants and the effect of operating conditions on the system performance in terms of specific daily water production and performance ratio are presented. Design of a large commercial adsorption desalination plant is also discussed herein.Key Words Adsorption desalination adsorption kinetics adsorption isotherms heat of adsorption heat recovery mass recovery performance ratio specific daily water production

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Heats of adsorption for charcoal nitrogen systems

Cited by 14 publications

References 0 publications

Characterization of activated carbons from peach stones through the mixed geometry model

Characterization of activated carbons from peach stones through the mixed geometry model

Adsorption isotherms and kinetics of HFC410A onto activated carbons

Adsorption Desalination: A Novel Method

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