Activated carbon cloth adsorption-cryogenic system to recover toxic volatile organic compounds

Lordgooei, Mehrdad; Carmichael, Kelly R.; Kelly, Terrance W.; Rood, Mark J.; Larson, Susan M.

doi:10.1016/0950-4214(96)00008-4

Cited by 47 publications

(33 citation statements)

References 1 publication

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“…The brous form of ACFs makes them easy to handle and to be fabricated into different forms of textiles, felts and composites that are versatile for applications. With diameters one to three orders of magnitude smaller than PACs, ACFs have signicantly higher specic surfaces, shorter diffusive paths and more accessible pores to sorbates to be used in removing toxic gases, such as SO 2 , 17 NO x , 18 volatile organic compounds 19 and natural gas, 20 in water purication, 21,22 and as capacitors 23,24 and vapor sensors. 25 To date, lignin-based ACFs have only been reported on precursor bers either melt spun from sowood acetic acid lignin 26 or electrospun from Alcell lignin in ethanol.…”

Section: Introductionmentioning

confidence: 99%

Ultrafine microporous and mesoporous activated carbon fibers from alkali lignin

Hsieh

2013

J. Mater. Chem. A

112

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A facile and sustainable approach has been successfully devised to fabricate ultrafine (100-500 nm) highly porous activated carbon fibers (ACFs) by electrospinning of aqueous solutions of predominantly alkali lignin (low sulfonate content) followed by simultaneous carbonization and activation at 850 C under N 2 . Incorporating a polyethylene oxide (PEO) carrier with only up to one ninth of lignin not only enabled efficient electrospinning into fibers but also retained fibrous structures during heating, alleviating the need for a separate thermal stabilization step. In situ impregnation of alkali hydroxide activating chemicals with only up to 50% of the lignin carbon precursor, i.e., merely one tenth to one quarter of the quantities used in manufacturing activated carbon particulates, allowed simultaneous carbonization and activation in a single heating step. A range of micropore-dominant to mesoporedominant ACFs were successfully fabricated to achieve superior specific surface (>1400 m 2 g À1) and porosity (>0.7 cm 3 g À1) tuned by varying the type and contents of alkali hydroxides. This streamlined approach was robust and demonstrated the feasibility and versatility in processing and converting a readily available renewable carbon precursor, lignin, into highly porous activated carbon fibers.

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Section: Introductionmentioning

confidence: 99%

Ultrafine microporous and mesoporous activated carbon fibers from alkali lignin

Hsieh

2013

J. Mater. Chem. A

112

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“…The fibrous form of ACFs makes them easy to handle and to be further processed into various forms of sheets, felts and composites. The high specific surfaces, short diffusive paths and abundant accessible pores to sorbates are desirable characteristics of ACFs for removing toxic gases such as SO 2 [1], NO x [2], organic compounds from air [3] and in waste water [4] as well as in storing hydrogen [5], methane and ethane [6]. Besides those excellent attributes, the high electrical conductivity of ACFs make them good candidate for supercapacitors, a pulse energy storage and delivery device used in the pitch system of wind turbines [7], electric vehicles [8] and actuators [9] to physically uptake and release charges accumulated at the interface of carbon material and the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

High energy density supercapacitors from lignin derived submicron activated carbon fibers in aqueous electrolytes

Zhang

Pan

et al. 2014

Journal of Power Sources

219

111

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“…This is an efficient refrigeration strategy considering that it allows gaseous N 2 to be used during electrical regeneration. Lordgooei et al (1996) have shown that the volume of N 2 required for refrigeration can be balanced with the volume of N 2 required as a regeneration carrier gas. In a larger-scale system, this configuration is favorable.…”

Section: Condensation Unitmentioning

confidence: 99%

“…The general equation for electrical resistivity, p (ohm • length) is defined in Equation 5 (Lordgooei et al 1996): The cross-sectional area of ACFC is the width times the thickness of one sheet of cloth. The thickness of a sheet is specific to a particular ACFC weave and areal density.…”

Section: Theory and Experimental Proceduresmentioning

confidence: 99%