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Bioresour Technol

Title:		Efficient removal of siloxanes and volatile organic compounds from sewage biogas by an anoxic biotrickling filter supplemented with activated carbon
Author(s):		Santos-Clotas E; Cabrera-Codony A; Boada E; Gich F; Munoz R; Martin MJ;
Address:		"LEQUIA, Institute of the Environment. University of Girona, Campus Montilivi, Girona 17003, Catalonia, Spain. Molecular Microbial Ecology Group (gEMM-IEA), Institute of Aquatic Ecology, University of Girona, Facultat de Ciencies, Campus Montilivi, Girona 17003, Spain. Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina s/n., Valladolid 47011, Spain. LEQUIA, Institute of the Environment. University of Girona, Campus Montilivi, Girona 17003, Catalonia, Spain. Electronic address: maria.martin@udg.edu"
Journal Title:		Bioresour Technol
Year:		2019
Volume:		20190907
Issue:
Page Number:		122136 -
DOI:		10.1016/j.biortech.2019.122136
ISSN/ISBN:		1873-2976 (Electronic) 0960-8524 (Linking)
Abstract:		"The removal of siloxanes (D4 and D5) and volatile organic contaminants (hexane, toluene and limonene) typically found in sewage biogas was investigated in a lab-scale biotrickling filter (BTF) packed with lava rock under anoxic conditions. Complete removal efficiencies for toluene and limonene were recorded at all empty bed residence time (EBRT) tested. The influence of EBRT was remarkable on the abatement of D5, whose removal decreased from 37% at 14.5?ª+min to 16% at 4?ª+min, while the removal of D4 and hexane remained below 16%. The packing material was supplemented with 20% of activated carbon aiming at increasing the mass transfer of the most hydrophobic pollutants. This strategy supported high removal efficiencies of 43 and 45% for hexane and D5 at the lowest EBRT. CO(2) and silica were identified as mineralization products along with the presence of metabolites in the trickling solution such as dimethylsilanediol, 2-carene and alpha-terpinene"
Keywords:		*Biofuels Bioreactors Charcoal Filtration Sewage Siloxanes *Volatile Organic Compounds Activated carbon Biogas upgrading Biotrickling filter;
Notes:		"MedlineSantos-Clotas, Eric Cabrera-Codony, Alba Boada, Ellana Gich, Frederic Munoz, Raul Martin, Maria J eng England 2019/09/21 Bioresour Technol. 2019 Dec; 294:122136. doi: 10.1016/j.biortech.2019.122136. Epub 2019 Sep 7"