On the dependence of the partition coefficient on the challenge concentration of VOCs on activated carbon: An experimental study

Chuan He, Beverly Guo, Jianshun Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Although many studies have evaluated the performance of activated carbon, most of them were performed at high VOC (Volatile Organic Compound) concentration levels (~ppmv). The performance of the sorbent media at realistic concentration (ppbv) is still not clear due to lack of experimental data. The objective of this study is to investigate the adsorption mechanism of activated carbon at different concentration levels and correlate the removal capacity as represented by the partition coefficient (Kma), with the challenge concentration (C) of VOCs. A series of tests were conducted at six concentration levels of Toluene from 107 ppm to 66 ppb, and different test conditions (particle size, flow rate and sorbent bed length). It was found that the partition coefficient varied with the concentration in the form of Kma=aCb or log(Kma)=A+BlogC. The correlation is essential to accurate representation of the media bed's breakthrough curve, and to predicting the performance of sorbent media at low concentration based on the data obtained from standard high concentration tests of sorbent media.

Original languageEnglish (US)
Title of host publication15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018
PublisherInternational Society of Indoor Air Quality and Climate
ISBN (Electronic)9781713826514
StatePublished - 2018
Event15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018 - Philadelphia, United States
Duration: Jul 22 2018Jul 27 2018

Publication series

Name15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018

Conference

Conference15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018
Country/TerritoryUnited States
CityPhiladelphia
Period7/22/187/27/18

Keywords

  • Activated carbon
  • Air cleaning
  • Partition coefficient
  • Physical adsorption
  • VOCs

ASJC Scopus subject areas

  • Pollution

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