“Application of fly ash/Blast furnace slag based geopolymers for H22S adsorption”

Manisha S. Kothari, Ashraf Aly Hassan, Hilal El-Hassan

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

Abstract

Hydrogen sulphide (H2S) is colourless, hazardous malodorant gas produced mainly from biological effluent treatment facilities, petroleum refineries, textile industries, chemical industries, pulp & paper manufacturing units to the atmosphere. Short term exposure of low concentration H2S causes headache, skin irritation, nausea and can damage central nervous system if prolonged. High concentration inhalation can cause unconsciousness or lead to death. Keeping this in mind, sustainable and efficient practical technique to remove H2S gas is need of an hour. Geopolymers are aluminosilicate rich materials activated by alkaline materials. Geopolymers are capable of adsorbing contaminants from air, water, and soil. In this study, geopolymers prepared using fly ash & blast furnace slag are tested for H2S adsorption at ambient conditions. Geopolymers with three different sizes are employed as adsorbent material in up flow reactor and gas stream with 500 ppm H2S with N2 balance gas is passed through it at constant flowrate. Portable H2S sensor with logger was employed to analyze the H2S concentration in the effluent gas stream at 10 second interval throughout the experiment. The effect of particle size and ratio of fly ash & blast furnace slag on the H2S adsorption capacity was examined. Results indicate that geopolymers prepared using fly ash & blast furnace slag can effectively adsorb H2S directly from the gas stream at ambient conditions. Thus, fly ash and blast-furnace slag based geopolymers shall be promoted as sustainable adsorbent materials for H2S adsorption.

Original languageEnglish
Title of host publication115th Air and Waste Management Association Annual Conference and Exhibition, ACE 2022
PublisherAir and Waste Management Association
ISBN (Electronic)9781713866602
Publication statusPublished - 2022
Event115th Air and Waste Management Association Annual Conference and Exhibition, ACE 2022 - San Francisco, United States
Duration: Jun 27 2022Jun 30 2022

Publication series

NameProceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA
Volume2022-June
ISSN (Print)1052-6102

Conference

Conference115th Air and Waste Management Association Annual Conference and Exhibition, ACE 2022
Country/TerritoryUnited States
CitySan Francisco
Period6/27/226/30/22

ASJC Scopus subject areas

  • General Environmental Science
  • General Energy

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