Inderscience Publishers

Removal of hydrogen sulphide on sewage sludge/industrial sludge based carbonaceous adsorbents

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The adsorbents were prepared for sewage sludge, waste oil sludge and metal oil sludge. On the materials obtained dynamic adsorption of H2S was measured. The initial and exhausted adsorbents were characterised using sorption of nitrogen, thermal analysis, and XRF, XRD and surface pH measurements. The adsorbents have high capacity for H2S (10% wt) The high volume of mesopores contributes significantly to reactive adsorption and provides space to store sulphur as the oxidation product. The highly dispersed mineral-like phase formed during pyrolysis provides basicity and catalytic centres for hydrogen sulphide dissociation and its oxidation to sulphur.

Keywords: desulfurisation, industrial sludge, adsorption, hydrogen sulphide, sewage sludge, carbonaceous adsorbents, waste oil sludge, metal oil sludge, H2S removal

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