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Sampling of benzene in tar matrices from biomass gasification using two different solid-phase sorbents

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Abstract

Biomass tar mainly consists of stable aromatic compounds such as benzene and polyaromatic hydrocarbons, benzene being the biggest tar component in real biomass gasification gas. For the analysis of individual tar compounds, the solid-phase adsorption method was chosen. According to this method, tar samples are collected on a column with an amino-phase sorbent. With a high benzene concentration in biomass tar, some of the benzene will not be collected on the amino-phase sorbent. To get over this situation, we have installed another column with activated charcoal which is intended for collection of volatile organic compounds, including benzene, after the column with the amino-phase sorbent. The study of maximal adsorption amounts of various compounds on both adsorbents while testing different sampling volumes led to the conclusion that benzene is a limiting compound. The research proved that the use of two sorbents (500 mg + 100 mg) connected in series allows for assessment of tar in synthesis gas with a tar concentration up to 30–40 g m−3, which corresponds to the requirements of most gasifiers.

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Acknowledgement

The author is grateful to Natalia Minova for her work on improving the English of this paper.

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  1. Department of Chemistry, Daugavpils University, Vienibas 13, 5401, Daugavpils, Latvia

    Sergejs Osipovs

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  1. Sergejs Osipovs
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Correspondence to Sergejs Osipovs.

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Osipovs, S. Sampling of benzene in tar matrices from biomass gasification using two different solid-phase sorbents. Anal Bioanal Chem 391, 1409–1417 (2008). https://doi.org/10.1007/s00216-007-1809-7

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  • DOI: https://doi.org/10.1007/s00216-007-1809-7

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