Application of pyrolysed agricultural biowastes as adsorbents for fish anaesthetic (MS-222) removal from water
| Autor: | Marta Otero, Eduardo M. Cuerda-Correa, Valdemar I. Esteves, Helena Nadais, Vânia Calisto, Catarina I.A. Ferreira, Sérgio M. Santos |
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| Rok vydání: | 2015 |
| Předmět: |
ADSORPTION
Environmental remediation Remediation 02 engineering and technology Environment 010501 environmental sciences SORPTION 01 natural sciences AQUEOUS-SOLUTION BIOMASS Analytical Chemistry symbols.namesake Adsorption CHARS Specific surface area Biochar medicine ACTIVATED CARBON SLUDGE 0105 earth and related environmental sciences BIOCHAR AQUACULTURE business.industry Chemistry Langmuir adsorption model Paper mill 021001 nanoscience & nanotechnology Fuel Technology Environmental chemistry VACUUM PYROLYSIS symbols 0210 nano-technology business Pyrolysis Activated carbon medicine.drug |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 0165-2370 |
| Popis: | This work aims to test the adsorption process for the removal of the fish anaesthetic MS-222 from water using biochars obtained from agricultural biowastes (Eucalyptus bark, peanut shells, walnut shells, peach stones, grape seeds and olive waste) as adsorbents. An industrial residue (primary paper mill sludge) and a commercial activated carbon were tested for comparison purposes. The starting materials and the resulting biochars were characterized by elemental and proximate analyses, total organic carbon, FTIR, C-13 and H-1 solid state NMR, and SEM. Also, specific surface area and porosity of biochars were determined. Then, batch kinetic and equilibrium experiments were performed on the adsorption of MS-222 onto the different produced biochars. The fastest kinetic was obtained using primary sludge pyrolysed (30 min to equilibrium attainment) and the highest biochars adsorption capacity was obtained using peanut shells (34 mg g(-1) of maximum adsorption capacity, predicted by the Langmuir-Freundlich model). Commercial activated carbon reaches 349 mg g(-1) of maximum adsorption capacity, as predicted by Langmuir model. (C) 2015 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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