Adsorption of H2S, NH3 and TMA from indoor air using porous corncob activated carbon: Isotherm and kinetics study

Tesfay Berhe Gebreegziabher; Shuang Wang; Hyungseok Nam

doi:10.1016/j.jece.2019.103234

Adsorption of H₂S, NH₃ and TMA from indoor air using porous corncob activated carbon: Isotherm and kinetics study

Tesfay Berhe Gebreegziabher, Shuang Wang, Hyungseok Nam

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

63 Scopus citations

Abstract

In this study, a corncob-derived activated carbon was prepared via chemical activation using potassium hydroxide as a chemical activating agent for the adsorption of H₂S, NH₃ and trimethylamine. The activated carbon was impregnated with copper to improve its H₂S, NH₃ and TMA adsorption performance. SEM, EDX, nitrogen adsorption-desorption, TGA/DTA, proximate and elemental analysis tests were employed to characterize the activated carbon samples. Removal efficiencies of the activated carbon samples for H₂S, NH₃ and TMA were conducted through batch experiments. The H₂S, NH₃ and TMA adsorption potentials of the CAC were 164.54, 190.68 and 323.56mgg^-1 respectively. The isotherm analysis results showed that the Langmuir adsorption isotherm model was the most suitable to describe the adsorption isotherm of H₂S, NH₃ and TMA. Similarly, pseudo-second order kinetic model well explained the adsorption kinetics of NH₃ and TMA while pseudo-first order showed better fit towards the adsorption of H₂S. The findings revealed that the copper-catalyzed corncob activated carbon is a promising and sustainable adsorbent for the removal of toxic gases from indoor areas.

Original language	English
Article number	103234
Journal	Journal of Environmental Chemical Engineering
Volume	7
Issue number	4
DOIs	https://doi.org/10.1016/j.jece.2019.103234
State	Published - Aug 2019

Keywords

Abbreviations BET Brunauer-Emmett-Teller
CAC corncob activated carbon
DTA differential thermal analysis
FC fixed carbon
IUPAC International Union of Pure and Applied Chemistry
NIOSH The National Institute for Occupational Safety and Health
PET polyethylene terephthalate
SEM scanning electron microscopy
TGA thermogravimetric analysis
TMA trimethylamine
VCM volatile combustible matter
VOC volatile organic matter

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title = "Adsorption of H2S, NH3 and TMA from indoor air using porous corncob activated carbon: Isotherm and kinetics study",

abstract = "In this study, a corncob-derived activated carbon was prepared via chemical activation using potassium hydroxide as a chemical activating agent for the adsorption of H2S, NH3 and trimethylamine. The activated carbon was impregnated with copper to improve its H2S, NH3 and TMA adsorption performance. SEM, EDX, nitrogen adsorption-desorption, TGA/DTA, proximate and elemental analysis tests were employed to characterize the activated carbon samples. Removal efficiencies of the activated carbon samples for H2S, NH3 and TMA were conducted through batch experiments. The H2S, NH3 and TMA adsorption potentials of the CAC were 164.54, 190.68 and 323.56mgg-1 respectively. The isotherm analysis results showed that the Langmuir adsorption isotherm model was the most suitable to describe the adsorption isotherm of H2S, NH3 and TMA. Similarly, pseudo-second order kinetic model well explained the adsorption kinetics of NH3 and TMA while pseudo-first order showed better fit towards the adsorption of H2S. The findings revealed that the copper-catalyzed corncob activated carbon is a promising and sustainable adsorbent for the removal of toxic gases from indoor areas.",

keywords = "Abbreviations BET Brunauer-Emmett-Teller, CAC corncob activated carbon, DTA differential thermal analysis, FC fixed carbon, IUPAC International Union of Pure and Applied Chemistry, NIOSH The National Institute for Occupational Safety and Health, PET polyethylene terephthalate, SEM scanning electron microscopy, TGA thermogravimetric analysis, TMA trimethylamine, VCM volatile combustible matter, VOC volatile organic matter",

author = "{Berhe Gebreegziabher}, Tesfay and Shuang Wang and Hyungseok Nam",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd.",

year = "2019",

month = aug,

doi = "10.1016/j.jece.2019.103234",

language = "English",

volume = "7",

journal = "Journal of Environmental Chemical Engineering",

issn = "2213-2929",

publisher = "Elsevier B.V.",

number = "4",

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T1 - Adsorption of H2S, NH3 and TMA from indoor air using porous corncob activated carbon

T2 - Isotherm and kinetics study

AU - Berhe Gebreegziabher, Tesfay

AU - Wang, Shuang

AU - Nam, Hyungseok

PY - 2019/8

Y1 - 2019/8

N2 - In this study, a corncob-derived activated carbon was prepared via chemical activation using potassium hydroxide as a chemical activating agent for the adsorption of H2S, NH3 and trimethylamine. The activated carbon was impregnated with copper to improve its H2S, NH3 and TMA adsorption performance. SEM, EDX, nitrogen adsorption-desorption, TGA/DTA, proximate and elemental analysis tests were employed to characterize the activated carbon samples. Removal efficiencies of the activated carbon samples for H2S, NH3 and TMA were conducted through batch experiments. The H2S, NH3 and TMA adsorption potentials of the CAC were 164.54, 190.68 and 323.56mgg-1 respectively. The isotherm analysis results showed that the Langmuir adsorption isotherm model was the most suitable to describe the adsorption isotherm of H2S, NH3 and TMA. Similarly, pseudo-second order kinetic model well explained the adsorption kinetics of NH3 and TMA while pseudo-first order showed better fit towards the adsorption of H2S. The findings revealed that the copper-catalyzed corncob activated carbon is a promising and sustainable adsorbent for the removal of toxic gases from indoor areas.

AB - In this study, a corncob-derived activated carbon was prepared via chemical activation using potassium hydroxide as a chemical activating agent for the adsorption of H2S, NH3 and trimethylamine. The activated carbon was impregnated with copper to improve its H2S, NH3 and TMA adsorption performance. SEM, EDX, nitrogen adsorption-desorption, TGA/DTA, proximate and elemental analysis tests were employed to characterize the activated carbon samples. Removal efficiencies of the activated carbon samples for H2S, NH3 and TMA were conducted through batch experiments. The H2S, NH3 and TMA adsorption potentials of the CAC were 164.54, 190.68 and 323.56mgg-1 respectively. The isotherm analysis results showed that the Langmuir adsorption isotherm model was the most suitable to describe the adsorption isotherm of H2S, NH3 and TMA. Similarly, pseudo-second order kinetic model well explained the adsorption kinetics of NH3 and TMA while pseudo-first order showed better fit towards the adsorption of H2S. The findings revealed that the copper-catalyzed corncob activated carbon is a promising and sustainable adsorbent for the removal of toxic gases from indoor areas.

KW - Abbreviations BET Brunauer-Emmett-Teller

KW - CAC corncob activated carbon

KW - DTA differential thermal analysis

KW - FC fixed carbon

KW - IUPAC International Union of Pure and Applied Chemistry

KW - NIOSH The National Institute for Occupational Safety and Health

KW - PET polyethylene terephthalate

KW - SEM scanning electron microscopy

KW - TGA thermogravimetric analysis

KW - TMA trimethylamine

KW - VCM volatile combustible matter

KW - VOC volatile organic matter

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DO - 10.1016/j.jece.2019.103234

M3 - Article

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SN - 2213-2929

VL - 7

JO - Journal of Environmental Chemical Engineering

JF - Journal of Environmental Chemical Engineering

IS - 4

M1 - 103234

ER -

Adsorption of H₂S, NH₃ and TMA from indoor air using porous corncob activated carbon: Isotherm and kinetics study

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Keywords

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