Liquid and vapor phase adsorption of BTX in lignin derived activated carbon: Equilibrium and kinetics study

Liquid and vapor phase adsorption of BTX in lignin derived activated carbon: Equilibrium and... Benzene, toluene and xylene (BTX) are few of the chemicals that cause environmental pollution in both liquid and vapor phase. In vapor phase, they are classified as volatile organic compounds (VOCs) and cause both indoor and outdoor air pollution. Although different kinds of activated carbons have been used for the adsorptive removal of BTX, the fundamental equilibrium and kinetic data of VOC adsorption in porous carbon are very rare in literature. It order to focus on such fundamental data, in this work, activated carbon was synthesized from de-alkaline lignin precursor by one-step chemical activation with KOH. The resultant carbon has the BET surface area of 2250 m2/g and total pore volume 1.1 cm3/g. Equilibrium and kinetics of liquid phase BTX adsorption were measured upto 100 ppm concentration of each the component in water. In vapor phase adsorption, automated VTI-SA + sorption analyzer was employed with nitrogen as carrier gas and equilibrium and kinetic data were recorded as a function of varying relative pressure or dew point (p/p0) of BTX. For adsorption isotherms, Henry's law, Langmuir, Freundlich and Sips models were successfully employed, whereas for adsorption kinetics, pseudofirst order, pseudosecond order and micropore diffusion model were used to calculate the necessary adsorption parameters. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Cleaner Production Elsevier

Liquid and vapor phase adsorption of BTX in lignin derived activated carbon: Equilibrium and kinetics study

Loading next page...
 
/lp/elsevier/liquid-and-vapor-phase-adsorption-of-btx-in-lignin-derived-activated-iTMl6dTT6I
Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0959-6526
D.O.I.
10.1016/j.jclepro.2018.02.076
Publisher site
See Article on Publisher Site

Abstract

Benzene, toluene and xylene (BTX) are few of the chemicals that cause environmental pollution in both liquid and vapor phase. In vapor phase, they are classified as volatile organic compounds (VOCs) and cause both indoor and outdoor air pollution. Although different kinds of activated carbons have been used for the adsorptive removal of BTX, the fundamental equilibrium and kinetic data of VOC adsorption in porous carbon are very rare in literature. It order to focus on such fundamental data, in this work, activated carbon was synthesized from de-alkaline lignin precursor by one-step chemical activation with KOH. The resultant carbon has the BET surface area of 2250 m2/g and total pore volume 1.1 cm3/g. Equilibrium and kinetics of liquid phase BTX adsorption were measured upto 100 ppm concentration of each the component in water. In vapor phase adsorption, automated VTI-SA + sorption analyzer was employed with nitrogen as carrier gas and equilibrium and kinetic data were recorded as a function of varying relative pressure or dew point (p/p0) of BTX. For adsorption isotherms, Henry's law, Langmuir, Freundlich and Sips models were successfully employed, whereas for adsorption kinetics, pseudofirst order, pseudosecond order and micropore diffusion model were used to calculate the necessary adsorption parameters.

Journal

Journal of Cleaner ProductionElsevier

Published: May 1, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off