Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/1714
Title: Removal of Metals from Aqueous Solutions Using Sea Buckthorn Waste from Dietary Supplement Technology
Authors: Kim, Lidia 
Catrina, Gina Alina 
Cernica, Georgiana 
Staicu, Vasile 
Popescu, Mariana 
Covaliu, Cristina Ileana 
Affiliations: National Research and Development Institute for Industrial Ecology, ECOIND 
National Research and Development Institute for Industrial Ecology, ECOIND 
National Research and Development Institute for Industrial Ecology, ECOIND 
SC Hofigal Export-Import SA 
SC Hofigal Export-Import SA 
University Politehnica of Bucharest, Romania 
Keywords: Adsorbent materials;Metals;Removal efficiency;Vegetable waste;Valorization
Issue Date: Jan-2021
Publisher: MDPI, Basel, Switzerland.
Abstract: 
The purpose of this study was to produce additional data for the valorization process of vegetable waste originating from dietary supplement technology. Two types of vegetable waste originating from different technological processes of sea buckthorn oil were used: vegetable waste from organic solvent extraction (P1) and vegetable waste from cold extraction (P2). Batch experiments evaluated the influence of pH, initial metal concentration, contact time, and Langmuir and Freundlich adsorption isotherms. The following pollutants—Cu, Cr, Co, Ni, Pb and Zn—from the wastewater were studied. The removal efficiency of metals from wastewater was evaluated at pH 3, 5 and 7. The highest metals removal efficiency was obtained at pH 5. It was observed that the Langmuir isotherm fits the adsorption process very well. Based on the results obtained, it can be concluded that vegetable waste resulting from the sea buckthorn oil industry could have potential applications for removing toxic metals from wastewater due to its high removal efficiency (>80%).
Description: 
Sustainability, 2021, 13(3), article no. 1441; https://doi.org/10.3390/su13031441
URI: http://hdl.handle.net/123456789/1714
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