20.500.12556/RUL-165323 Pyrolysis of industrial hemp biomass from contaminated soil phytoremediation kinetics, modelling transport phenomena and biochar-based metal reduction Phytoremediation is the use of vegetation for the in situ treatment of contaminated environments. After plants have been used for phytoremediation of soils, their biomass can be used for example as value-added products or converted by thermochemical processes. Large-scale application of pyrolysis technology for phytoremediation biomass requires accurate predictive kinetic models and a characterization of the toxicity of the materials produced. The pyrolysis of industrial hemp (Cannabis sativa L.) was investigated on a laboratory scale by varying the process conditions and accurately modelled by considering four pseudo-components with first reaction order. The average value of the coefficients of determination is 0.9980. Biomass and biochar were characterized and the main components of the gas phase were monitored. We found Cd, Pb, and Zn in the roots, although in lower amounts than in the soil. Especially the leaves and stems showed negligible traces of these elements, so that these parts can be used directly, even if the hemp was grown on the polluted soil. After pyrolysis, the concentration of pollutants in the solid fraction decreased, which could be attributed to the reduction of metal oxides (or salts) to elemental form and subsequent evaporation. This pyrolysis process has the potential to treat heavy metal-rich biomass, with gas phase purification via condensation, yielding agricultural-grade biochar, CO-rich gas and a highly concentrated heavy metal stream in absorbent material. biomass Cannabis sativa chemical kinetics phytoremediation pyrolysis biokemija biomasa industrijska konoplja kinetika piroliza true false true Angleški jezik Slovenski jezik Članek v reviji 2024-12-02 11:50:57 2024-12-02 11:50:57 2024-12-03 04:00:59 0000-00-00 00:00:00 2024 0 0 12 str. art. 179899 Vol. 742 Dec. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 577 1872-762X 10.1016/j.tca.2024.179899 217180675 1-s2.0-S0040603124002387-main.pdf 1-s2.0-S0040603124002387-main.pdf 1 AFFEB5296C1EA8DE39DA7E350785C04D de43ca80cfd0a2e91d20dfc5baedf20f76e674a4c058445bae94bf74644df868 27a773ad-b09b-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=196423 https://www.sciencedirect.com/science/article/pii/S0040603124002387 1 e1f2adee-b09a-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=196420 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0