| abstract |
An industrial waste-derived adsorbent is obtained by thermally decomposing sewage sludge, metal sludge, waste oil sludge and tobacco waste in several combinations. Industrial waste-derived adsorbents were obtained by pyrolyzing sewage sludge, metal sludge, waste oil sludge and tobacco waste in several combinations. This material was used as a medium for removing hydrogen sulfide at room temperature in the presence of moisture. The initial adsorbent and the exhausted adsorbent after the breakthrough test were characterized using nitrogen adsorption, thermal analysis, XRD, ICP, and surface pH measurements. Mixing tobacco and sludge provides a strong synergistic effect and improves the catalytic properties of the adsorbent. During the pyrolysis, a new mineral phase is produced as a result of the solid phase reaction between each sludge component. High-temperature pyrolysis has an effect on the adsorbent because the activation of the carbonaceous phase is increased and the inorganic phase is chemically stabilized. Samples obtained at low temperatures are sensitive to water, which deactivates the catalytic center. [Selection] Figure 1 |