Pb2+ adsorption by a compost obtained from the treatment of tobacco from smuggled cigarettes and industrial sewage sludge
| Autor: | Daniele Cristina Hass Seremeta, Sandro Xavier de Campos, Cleber Pinto da Silva, Rosimara Zittel |
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| Rok vydání: | 2018 |
| Předmět: |
Chemistry
Compost Health Toxicology and Mutagenesis Infrared spectroscopy General Medicine 010501 environmental sciences engineering.material Mass spectrometry 01 natural sciences Pollution Adsorption Adsorption kinetics engineering Environmental Chemistry Amine gas treating Fourier transform infrared spectroscopy Sludge 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | Environmental Science and Pollution Research. 26:797-805 |
| ISSN: | 1614-7499 0944-1344 |
| DOI: | 10.1007/s11356-018-3655-x |
| Popis: | The adsorption of Pb2+ by a compost obtained from the treatment of tobacco from smuggled cigarettes (SCT) and industrial sewage sludge (ISS) was investigated. The Pb2+ adsorption process was evaluated as function of different concentrations of adsorbent and adsorbate, pH variations, and contact time. Fourier transformed infrared spectroscopy (FTIR) and energy dispersive X-ray spectrometry (EDX) were adopted to obtain information regarding structural changes and a better understanding of the adsorption mechanism. The adsorbent maximum adsorption capacity for Pb2+, calculated using the Sips equation, was 21.454 mg/g with 3 g/L adsorbent at pH 5. The adsorption kinetics best adjustment was obtained using the pseudo-second-order model with a time of 240 min to reach the adsorption equilibrium. FTIR and EDX results suggest that Pb2+ might have bonded to phenolic, carboxylic, hydroxyl, and amine groups; they also show formation of organometallic complexes and cationic exchange between the compost and the solution. The study confirmed that the compost evaluated can be used as a potential adsorbent in environments contaminated with Pb2+. |
| Databáze: | OpenAIRE |
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