This paper discusses H2S, NH3 and VOCs removal by sewage-sludge-derived materials with outstanding chemical and textural properties. These materials were obtained from different precursors using different chemical and thermal treatments. Results show that the H2S removal process entailed a catalytic conversion of H2S to S or SO42− species. On the other hand, adsorption is the main mechanism governing the performance of sludge-based materials for NH3 and VOCs. Retention capacities (x/M values) obtained for some of the sludge–based adsorbents/catalysts are similar to those obtained with commercial activated carbons selected as reference materials.
Removal of odour-causing compounds using carbonaceous adsorbents/catalysts prepared from sewage sludge
A. Anfruns, C. Canals-Batlle, A. Ros, M. A. Lillo-Ródenas, A. Linares-Solano, E. Fuente, M. A. Montes-Morán, M. J. Martin; Removal of odour-causing compounds using carbonaceous adsorbents/catalysts prepared from sewage sludge. Water Sci Technol 1 April 2009; 59 (7): 1371–1376. doi: https://doi.org/10.2166/wst.2009.126
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