Environmental strategies to remove volatile aromatic fractions (BTEX) from petroleum industry wastewater using biomass.

Autor: Costa AS; Department of Chemistry, Federal University of Sergipe (UFS), 49100-000 São Cristovão, SE, Brazil., Romão LP, Araújo BR, Lucas SC, Maciel ST, Wisniewski A Jr, Alexandre MR
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2012 Feb; Vol. 105, pp. 31-9. Date of Electronic Publication: 2011 Dec 01.
DOI: 10.1016/j.biortech.2011.11.096
Abstrakt: This work investigates the potentials of peat and angico hardwood sawdust to remove BTEX (benzene, toluene, ethylbenzene, and isomers of xylene) from the produced water discharged into aquatic systems during petroleum extraction. Peat and angico sawdust samples were pyrolyzed at 500°C, and found to contain n-alkenes, n-alkanes and pentacyclic triterpenes (peat), and 4-methoxyphenol, 1,4-dimethoxyphenol and 1,3,4-trimethoxyphenol (angico sawdust). In batch experiments, the removal capacities using peat were 32.4%, 50.0%, 63.0%, 67.8%, and 61.8% for benzene, toluene, ethylbenzene, m,p-xylenes and o-xylene, respectively. This compared with removal capacities using angico sawdust of 20.2%, 36.4%, 52.8%, 57.8%, and 53.7% for these compounds respectively, demonstrating the superior performance of the peat.
(Copyright © 2011 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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