Poplar wood and tea biochars for trichloroethylene remediation in pure water and contaminated groundwater
| Autor: | Vincent Verney, Marc Dubois, Loïc Della Puppa, Vincent Xavier, Marion Ducousso, Florence Delor-Jestin, Nicolas Batisse |
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| Přispěvatelé: | Institut de Chimie de Clermont-Ferrand (ICCF), SIGMA Clermont (SIGMA Clermont)-Institut de Chimie du CNRS (INC)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Trichloroethylene Environmental remediation Biochars Tetrachloroethylene 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences chemistry.chemical_compound Organic contaminants Biochar medicine [CHIM]Chemical Sciences GE1-350 Waste Management and Disposal 0105 earth and related environmental sciences Global and Planetary Change Sorption kinetics Sorption 021001 nanoscience & nanotechnology Water pollution remediation Pollution 6. Clean water Environmental sciences chemistry Environmental chemistry MESH: Biochars 0210 nano-technology Pyrolysis Groundwater Activated carbon medicine.drug |
| Zdroj: | Environmental Challenges, Vol 1, Iss, Pp 100003-(2020) Environmental Challenges Environmental Challenges, 2020, 1, pp.100003. ⟨10.1016/j.envc.2020.100003⟩ |
| ISSN: | 2667-0100 |
| Popis: | International audience; Four biochars from pyrolysis of poplar wood (biochar P) and tea (biochar T) at 450 and 750 °C have been tested in a first time as adsorbents for trichloroethylene (TCE) removal in groundwater. The physico-chemical properties of biochars were systematically investigated with organic elemental analyser, scanning electron microscopy, N2 adsorption measurement, IR spectroscopy and X-ray photoelectron microscopy. Three kinetic models were used to follow the TCE removal by biochars. The best kinetic performances were obtained with biochars P with the smallest particle size diameter (50 – 100 µm) due to their porosity and the mass transfer limitation for the TCE remediation. Remediation of a real sample of groundwater polluted by chlorinated organic compounds showed that biochar P produced at 750 °C is more efficient to remove vinyl chloride (65% adsorbed) than commercial activated carbon powder (40%). The TCE sorption capacity is similar in pure water and in polluted groundwater. The results also highlighted better retention capacity for the most substituted molecules (tri and tetrachloroethylene) for biochar P750. |
| Databáze: | OpenAIRE |
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