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Title: Adsorption of Cu(II) ions from aqueous solutions on biochars prepared from agricultural by-products
Authors: Pellera, Frantseska-Maria
Giannis, Apostolos
Kalderis, Dimitrios
Anastasiadou, Kalliopi
Stegmann, Rainer
Wang, Jing-Yuan
Gidarakos, Evangelos
Keywords: DRNTU::Engineering::Environmental engineering
Issue Date: 2012
Source: Pellera, F.-M., Giannis, A., Kalderis, D., Anastasiadou, K., Stegmann, R., Wang, J.-Y., et al. (2012). Adsorption of Cu(II) ions from aqueous solutions on biochars prepared from agricultural by-products. Journal of environmental management, 96(1), 35-42.
Series/Report no.: Journal of environmental management
Abstract: In this study, the adsorption of Cu(II) from aqueous solutions by agricultural by-products, such as rice husks, olive pomace and orange waste, as well as compost, was evaluated. The aim was to obtain sorbent materials (biochars) through hydrothermal treatment (300 °C) and pyrolysis (300 °C and 600 °C). The effect of adsorbent dose, pH, contact time and initial Cu(II) concentration in batch-mode experiments was investigated. The optimum Cu(II) adsorption conditions was found to occur at 5–12 g/L adsorbent dose, initial pH 5–6, and reaction time 2–4 h. Furthermore, the adsorption kinetics were best described by the pseudo-second order model for all the tested materials, while the adsorption equilibrium best fitted by the linear and Freundlich isotherms. Comparing rice husks and olive pomace, the higher adsorption capacity resulted after pyrolysis at 300 °C. With respect to the orange waste and compost, the highest adsorption capacity was observed using biochars obtained after hydrothermal treatment and pyrolysis at 300 °C.
ISSN: 0301-4797
DOI: 10.1016/j.jenvman.2011.10.010
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CEE Journal Articles

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