Preparation of Sewage Sludge¿Based Activated Carbon for Hydrogen Sulphide Removal
| Autor: | M.I. Alcaina-Miranda, José-Antonio Mendoza-Roca, A. M. Maciá, L. Pastor, C. Lardín, M.J. Luján-Facundo, M.I. Iborra-Clar, J. Claros |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
INGENIERIA HIDRAULICA
Environmental Engineering Materials science Activated carbon 010501 environmental sciences Raw material 01 natural sciences INGENIERIA QUIMICA Adsorption Specific surface area Zeta potential medicine Environmental Chemistry Deodorization 0105 earth and related environmental sciences Water Science and Technology Ecological Modeling Wastewater sludge Pollution Volume (thermodynamics) Chemical engineering Sewage treatment Sludge medicine.drug |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| DOI: | 10.1007/s11270-020-04518-w |
| Popis: | [EN] The circular economy concept boosts the use of wastes as secondary raw materials in the EU renewable and sustainable framework. In wastewater treatment plants (WWTP), sludge is one of the most important wastes, and its management is being widely discussed in the last years. In this work, sewage sludge from WWTP was employed as raw material for producing activated carbon (AC) by physical-chemical activation. The prepared AC was subsequently tested for hydrogen sulphide removal in view of its further use in deodorization in a WWTP. The effects of the activation temperature and the chemical agent used (NaOH and KOH) during the activation process were studied. On the one hand, the characteristics of each AC fabricated were analysed in terms of BET (Brunauer-Emmett-Teller) surface area, pore and micropore volume, pore diameter, surface morphology and zeta potential. On the other hand, BET isotherms were also calculated. Finally, both the prepared AC and a commercial AC were tested for H2S removal from a gas stream. Results demonstrated that the optimum physical and chemical activation temperature was 600 degrees C and 1000 degrees C, respectively, and the best activated agent tested was KOH. The prepared AC showed excellent properties (specific surface area around 300 m(2)/g) for H2S removal, even better efficiencies than those achieved by the tested commercial AC. |
| Databáze: | OpenAIRE |
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