caa a22 4500 605497915 CHVBK 20210128100543.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00253-014-5796-2 doi (NATIONALLICENCE)springer-10.1007/s00253-014-5796-2 Conversion of chemical scrubbers to biotrickling filters for VOCs and H2S treatment at low contact times [Elektronische Daten] [Alfredo Santos, Xavier Guimerà, Antonio Dorado, Xavier Gamisans, David Gabriel] The purpose of this work was to evaluate the technical and economical feasibility of converting three chemical scrubbers in series to biotrickling filters (BTFs) for the simultaneous removal of H2S and volatile organic compounds (VOCs). The conversion of the full-scale scrubbers was based on previous conversion protocols. Conversion mainly required replacing the original carrier material and recycle pumps as well as modifying the controls and operation of the reactors. Complete removal of H2S and VOCs on a routine basis was reached at neutral pH in a longer period of time compared to previous conversions reported. Biotrickling filters operated at a gas contact time of about 1.4s per reactor and at pH controlled between 6.5 and 6.8. Inlet average concentrations below 10 ppmv of H2S and below 5 ppmv for VOCs were often completely removed. The first and second bioreactors played a primary role in H2S removal. Year-round operation of the biotrickling filters proved the ability of the system to handle progressive load increases of H2S and VOCs. However, fast, sudden load changes often lead to reduced removal efficiencies. Odor analyses showed average removal efficiencies above 80%. Gas chromatography-mass spectrometry of selected samples showed that outlet odor concentration was due to limited removal of VOCs. The conversion showed was economically viable taking into account the theoretical consumption of chemicals needed for the absorption and oxidation of both H2S and VOCs. Springer-Verlag Berlin Heidelberg, 2014 Chemical scrubbers' conversion nationallicence Biotrickling filterm nationallicence H2S nationallicence VOCs nationallicence Neutral pH operation nationallicence Santos Alfredo Department of Chemical Engineering, School of Engineering, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain aut Guimerà Xavier Department of Mining Engineering and Natural Resources, Universitat Politècnica de Catalunya, Avinguda de les Bases de Manresa 61-73, 08240, Manresa, Spain aut Dorado Antonio Department of Mining Engineering and Natural Resources, Universitat Politècnica de Catalunya, Avinguda de les Bases de Manresa 61-73, 08240, Manresa, Spain aut Gamisans Xavier Department of Mining Engineering and Natural Resources, Universitat Politècnica de Catalunya, Avinguda de les Bases de Manresa 61-73, 08240, Manresa, Spain aut Gabriel David Department of Chemical Engineering, School of Engineering, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain aut Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/1(2015-01-01), 67-76 0175-7598 99:1<67 2015 99 253 https://doi.org/10.1007/s00253-014-5796-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00253-014-5796-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Santos Alfredo Department of Chemical Engineering, School of Engineering, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain aut NATIONALLICENCE 700 1- Guimerà Xavier Department of Mining Engineering and Natural Resources, Universitat Politècnica de Catalunya, Avinguda de les Bases de Manresa 61-73, 08240, Manresa, Spain aut NATIONALLICENCE 700 1- Dorado Antonio Department of Mining Engineering and Natural Resources, Universitat Politècnica de Catalunya, Avinguda de les Bases de Manresa 61-73, 08240, Manresa, Spain aut NATIONALLICENCE 700 1- Gamisans Xavier Department of Mining Engineering and Natural Resources, Universitat Politècnica de Catalunya, Avinguda de les Bases de Manresa 61-73, 08240, Manresa, Spain aut NATIONALLICENCE 700 1- Gabriel David Department of Chemical Engineering, School of Engineering, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/1(2015-01-01), 67-76 0175-7598 99:1<67 2015 99 253