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 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

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
Access to DeepDyve database
Abstract access only
Unlimited access to over
18 million full-text articles
Print
20 pages/month
PDF Discount
20% off