08-26-2020, 09:27 PM
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.
(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.