PMID: 18200931Jan 19, 2008Paper

Removal of hydrogen sulfide and sulfur dioxide by carbons impregnated with triethylenediamine

Journal of the Air & Waste Management Association
Li-Chun WuYing-Chien Chung

Abstract

Activated carbon (AC) adsorption has long been considered to be a readily available technology for providing protection against exposure to acutely toxic gases. However, ACs without chemical impregnation have proven to be much less efficient than impregnated ACs in terms of gas removal. The impregnated ACs in current use are usually modified with metalloid impregnation agents (ASC-carbons; copper, chromium, or silver) to simultaneously enhance the chemical and physical properties of the ACs in removing specific poisonous gases. These metalloid agents, however, can cause acute poisoning to both humans and the environment, thereby necessitating the search for organic impregnation agents that present a much lower risk. The aim of the study reported here was to assess AC or ASC-carbon impregnated with triethylenediamine (TEDA) in terms of its adsorption capability for simulated hydrogen sulfide (H2S) and sulfur dioxide (SO2) gases. The investigation was undergone in a properly designed laboratory-scale and industrial fume hood evaluation. Using the system reported here, we obtained a significant adsorption: the removal capability for H2S and SO2 was 375 and 229 mg/g-C, respectively. BET measurements, element analysis, scanning elec...Continue Reading

References

May 16, 2006·Journal of Colloid and Interface Science·Hisashi TamaiTakeshi Shiono

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Citations

Jan 22, 2013·Journal of Hazardous Materials·Javier A Arcibar-OrozcoTeresa J Bandosz

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