Use of Waste-Derived Biochar to Remove Copper from Aqueous Solution in a Continuous-Flow System.

Aran, Diego, Antelo, Juan, Lodeiro, Pablo , Macias, Felipe and Fiol, Sarah (2017) Use of Waste-Derived Biochar to Remove Copper from Aqueous Solution in a Continuous-Flow System. Open Access Industrial & Engineering Chemistry Research, 56 (44). pp. 12755-12762. DOI 10.1021/acs.iecr.7b03056.

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Abstract

The discharges from industrial processes constitute the main source of copper contamination in aqueous ecosystems. In this study we investigated the capacity of different types of biochar (derived from chicken manure, eucalyptus, corncob, olive mill and pine sawdust) to remove copper from aqueous solution in a continuous-flow system. The flow rate of the system strongly influenced the amount of copper retained. The adsorption to the corncob biochar varied from 5.51 to 3.48 mg Cu g-1 as the flux decreased from 13 to 2.5 mL min-1. The physicochemical characteristics of biochar determine the copper retention capacity and the underlying immobilization mechanisms. Biochars with high inorganic contents retain the largest amounts of copper and may be suitable for using in water treatment systems to remove heavy metals. The copper retention capacity of the biochars ranged between ~1.3 and 26 mg g-1 and varied in the following order: chicken manure > olive mill >> corncob > eucalyptus > sawdust pine.

Document Type: Article
Keywords: Biochar, copper, sorption, slow pyrolysis, continuous-flow systems
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-CH Chemical Oceanography
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1021/acs.iecr.7b03056
ISSN: 0888-5885
Related URLs:
Projects: CRETUS
Date Deposited: 30 Oct 2017 10:30
Last Modified: 01 Feb 2019 15:01
URI: http://oceanrep.geomar.de/id/eprint/40032

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