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Environ Sci Pollut Res Int


Title:Biochar as low-cost sorbent of volatile fuel organic compounds: potential application to water remediation
Author(s):Saiz-Rubio R; Balseiro-Romero M; Antelo J; Diez E; Fiol S; Macias F;
Address:"Department of Soil Science and Agricultural Chemistry, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain. ruth.saiz@usc.es. Technological Research Institute, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain. ruth.saiz@usc.es. Department of Soil Science and Agricultural Chemistry, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain. UMR ECOSYS, AgroParisTech, Universite Paris-Saclay, Avenue Lucien Bretignieres, 78850, Thiverval-Grignon, France. Technological Research Institute, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain. Department of Physical Chemistry, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain"
Journal Title:Environ Sci Pollut Res Int
Year:2019
Volume:20181127
Issue:12
Page Number:11605 - 11617
DOI: 10.1007/s11356-018-3798-9
ISSN/ISBN:1614-7499 (Electronic) 0944-1344 (Linking)
Abstract:"Pyrolysis of waste materials to produce biochar is an excellent and suitable alternative supporting a circular bio-based economy. One of the properties attributed to biochar is the capacity for sorbing organic contaminants, which is determined by its composition and physicochemical characteristics. In this study, the capacity of waste-derived biochar to retain volatile fuel organic compounds (benzene, toluene, ethylbenzene and xylene (BTEX) and fuel oxygenates (FO)) from artificially contaminated water was assessed using batch-based sorption experiments. Additionally, the sorption isotherms were established. The results showed significant differences between BTEX and FO sorption on biochar, being the most hydrophobic and non-polar contaminants those showing the highest retention. Furthermore, the sorption process reflected a multilayer behaviour and a relatively high sorption capacity of the biochar materials. Langmuir and Freundlich models were adequate to describe the experimental results and to detect general differences in the sorption behaviour of volatile fuel organic compounds. It was also observed that the feedstock material and biochar pyrolysis conditions had a significant influence in the sorption process. The highest sorption capacity was found in biochars produced at high temperature (> 400 degrees C) and thus rich in aromatic C, such as eucalyptus and corn cob biochars. Overall, waste-derived biochar offers a viable alternative to be used in the remediation of volatile fuel organic compounds from water due to its high sorption capacity"
Keywords:"Adsorption Charcoal Environmental Restoration and Remediation/*methods Hot Temperature Volatile Organic Compounds/analysis/*chemistry Water Pollutants, Chemical/analysis/*chemistry Btex Biochar Fuel oxygenates Hs-gc-ms Isotherms Sorption Water remediation;"
Notes:"MedlineSaiz-Rubio, Ruth Balseiro-Romero, Maria Antelo, Juan Diez, Elena Fiol, Sarah Macias, Felipe eng GRC2014/003/Conselleria de Cultura, Educacion e Ordenacion Universitaria, Xunta de Galicia/ ED481B 2017/073/Conselleria de Cultura, Educacion e Ordenacion Universitaria, Xunta de Galicia/ AGRUP2015/02/European Regional Development Fund/ 2014-CE131/Conselleria de economia, emprego e industria, Xunta de Galicia (ES)/ Germany 2018/11/30 Environ Sci Pollut Res Int. 2019 Apr; 26(12):11605-11617. doi: 10.1007/s11356-018-3798-9. Epub 2018 Nov 27"

 
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