TY - JOUR
T1 - Elemental mercury adsorption on sulfur-impregnated porous carbon-A review
AU - Suresh Kumar Reddy, K.
AU - Al Shoaibi, Ahmed
AU - Srinivasakannan, C.
N1 - Funding Information:
The authors wish to acknowledge the financial support provided by the Petroleum Institute, and we are particularly grateful to the Institute for giving us the opportunity to study the development of porous carbon for gas processing.
PY - 2014/1/2
Y1 - 2014/1/2
N2 - The presence of elemental mercury in wellhead natural gas is an important industrial problem, since even low levels of mercury can damage cryogenic aluminium heat exchangers and other plant equipment. Mercury present in the natural gas stream will also dramatically shorten the useful life of precious metal catalysts. The present work reviews the overall process of elemental mercury removal in practice using non-regenerative adsorbents (e.g. sulfur-impregnated porous carbon), addressing the various influencing parameters such as the method of sulfur impregnation, the impregnation temperature, the sulfur to carbon ratio, the impregnation time, the impact of flue gas constituents, the effect of processing temperature, and the nature of any carbon-containing functional groups present. The distribution of elemental sulfur is found to be the key to developing an effective adsorbent, rather than quantity of sulfur impregnated. Modifying or developing an adsorbent for elemental mercury removal from natural gas needs a detail physical and chemical characteristics assessment of the adsorbent.
AB - The presence of elemental mercury in wellhead natural gas is an important industrial problem, since even low levels of mercury can damage cryogenic aluminium heat exchangers and other plant equipment. Mercury present in the natural gas stream will also dramatically shorten the useful life of precious metal catalysts. The present work reviews the overall process of elemental mercury removal in practice using non-regenerative adsorbents (e.g. sulfur-impregnated porous carbon), addressing the various influencing parameters such as the method of sulfur impregnation, the impregnation temperature, the sulfur to carbon ratio, the impregnation time, the impact of flue gas constituents, the effect of processing temperature, and the nature of any carbon-containing functional groups present. The distribution of elemental sulfur is found to be the key to developing an effective adsorbent, rather than quantity of sulfur impregnated. Modifying or developing an adsorbent for elemental mercury removal from natural gas needs a detail physical and chemical characteristics assessment of the adsorbent.
KW - adsorption
KW - elemental mercury
KW - sulphur impregnation
UR - http://www.scopus.com/inward/record.url?scp=84890569271&partnerID=8YFLogxK
U2 - 10.1080/21622515.2013.804589
DO - 10.1080/21622515.2013.804589
M3 - Review article
C2 - 24600836
AN - SCOPUS:84890569271
SN - 0959-3330
VL - 35
SP - 18
EP - 26
JO - Environmental Technology (United Kingdom)
JF - Environmental Technology (United Kingdom)
IS - 1
ER -