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+--- Thread: Sludge derived adsorbents (/thread-25995.html)
Sludge derived adsorbents - Angelan^324#4ml - 08-26-2020
Because many commercially available H2S Adsorbents are costly or have other associated problems, attention has been given to using various sludge derived materials as adsorbents. When sludge undergoes pyrolysis, a material is obtained with a mesoporous structure and an active surface area with chemistry that may promote the oxidation of hydrogen sulfide to elemental sulfur (Yuan & Bandosz, 2007). The mechanisms of H2S removal described by Yan et al.
(2004) can be applied to sludge derived adsorbents. Sludge has a complex chemistry, but it has enough of the reactive species given by Yan et al. that it could provide an alternative to using non-impregnated activated carbon. The efficiency of sludge at H2S removal has been found to be similar to that of iron based adsorbents, but less efficient than impregnated activated carbon (Abatzoglou & Boivin, 2009). 18 A concern with using sludge is that it may contain compounds which adversely affect H2S removal. Some compounds in question are derived from metal sludge produced by industry.