Preliminary Economic Assessment of Microwave Regeneration of Activated Carbon for the Carbon in Pulp Process

Bradshaw, S.M.; Wyk, E. J. Van; Swardt, J. B. De

doi:10.1080/08327823.1997.11688333

Cited by 23 publications

(9 citation statements)

References 1 publication

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“…When spent activated carbon is subject to a microwave field, the heat generated within the particles produces rapid temperature rises and the release of other compounds adsorbed on the carbon [19][20][21][22][23]. In a similar process, carbon used as adsorbent to remove NO x and SO x from gas streams can be regenerated with microwaves producing CO 2 and N 2 as gases and elemental sulphur [24].…”

Section: Microwave Pyrolysis Of Plasticsmentioning

confidence: 99%

Microwave Pyrolysis of Plastic Wastes

Ludlow-Palafox

Chase

2006

Feedstock Recycling and Pyrolysis of Waste Plastics

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Section: Microwave Pyrolysis Of Plasticsmentioning

confidence: 99%

Microwave Pyrolysis of Plastic Wastes

Ludlow-Palafox

Chase

2006

Feedstock Recycling and Pyrolysis of Waste Plastics

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“…The application of microwave-heating technology for regenerating industrial waste activated carbon has been investigated [8][9][10], with very promising results. The main difference between microwave devices and conventional heating systems is in the way the heat is generated.…”

Section: Introductionmentioning

confidence: 99%

Effect of microwave and conventional regeneration on the microporous and mesoporous network and on the adsorptive capacity of activated carbons

Ania¹,

Parra²,

Menéndez³

et al. 2005

Microporous and Mesoporous Materials

265

124

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The effect of different heating mechanisms on the porous network of activated carbons (AC) previously exhausted with phenol has been studied. To this end, thermal treatment of the exhausted AC was performed using two experimental devices: a single mode microwave device operating at 2450 MHz and a conventional electric furnace. By employing microwave energy, the regeneration time was considerably shortened compared to conventional thermal heating. Moreover, microwave heating preserved the porous structure of the regenerated AC more efficiently than treatment in a conventional device. In both cases successive regeneration cycles reduced the microporosity of the activated carbons. However, conventional heating shifted the micropore size distribution to pores of narrower sizes. The apparent BET surface areas were also reduced significantly over the regeneration cycles. A loss of the adsorptive capacity of the carbon material was observed after six adsorption-desorption cycles in both systems. The phenol adsorption capacities decreased to a greater extent in the samples regenerated in the electric furnace.

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“…For fixed bed application, annular bed geometry may help to overcome the penetration problem usually experienced [69]. The application of high voltages to an adsorbent results in molecular response with a permanent dipole moment or induced dipole, which changes the high-voltage orientation in the direction opposite to that of the applied field [70]. This leads to synchronized agitation of molecules that generates heat energy.…”

Section: Microwave-assisted Regeneration Techniquementioning

confidence: 99%

Regeneration strategies for spent solid matrices used in adsorption of organic pollutants from surface water: a critical review

Omorogie

Babalola

Unuabonah

2016

Desalination and Water Treatment

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A B S T R A C TAdsorption is a very important physicochemical process used for several purposes including separation and purification of proteins and in water treatment. This article reviews the various strategies that have been employed in the regeneration of spent adsorbents used in the adsorption of organic pollutants from aqueous solutions. The principles, advantages, disadvantages, and factors influencing each of these techniques are discussed. Future perspectives on the use of these techniques in regeneration process are provided for further studies with the view to make the regeneration process of spent solids more efficient and sustainable.

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Preliminary Economic Assessment of Microwave Regeneration of Activated Carbon for the Carbon in Pulp Process

Cited by 23 publications

References 1 publication

Microwave Pyrolysis of Plastic Wastes

Microwave Pyrolysis of Plastic Wastes

Effect of microwave and conventional regeneration on the microporous and mesoporous network and on the adsorptive capacity of activated carbons

Regeneration strategies for spent solid matrices used in adsorption of organic pollutants from surface water: a critical review

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