Affiliation:
1. Laboratoire Sciences Analytiques Bioanalytiques et Miniaturisation CBI ESPCI Paris Université PSL CNRS Paris France
2. GRTgaz Research and Innovation Center for Energy (RICE) 1–3 rue du Commandant d'Estienne d'Orves Villeneuve la Garenne France
Abstract
The development of renewable and low‐carbon gases for injection into the gas grid obtained by different processes such as anaerobic digestion, pyrogasification, hydrothermal gasification, and methanation, followed by upgrading steps, increases the demand for analysis and characterization in order to fully manage their integration into the gas value chain. If the analysis of the main compounds (methane, carbon dioxide, hydrogen, and carbon monoxide) is well described, the analysis of impurities in renewable gases remains more challenging due to their various natures and quantities.After a brief description of renewable and low‐carbon methane production processes, the review focuses on the methods used for the analysis of the different compounds in renewable gases, from the main ones to impurities at ppbv levels. Gas chromatography (GC), coupled with different detectors, is the preferred technique, enabling the analysis and quantification of siloxanes, terpenes, oxygenates, and sulfur compounds. Recently, comprehensive two‐dimensional GC has been applied to renewable gases, increasing the number of compounds detected. Non‐chromatographic techniques are also reviewed. As sampling is of major importance in the search for reliable analyses, a whole section is devoted to this aspect. Among the available methods, pre‐concentration on adsorbent tubes emerges as the most relevant solution.
Subject
Filtration and Separation,Analytical Chemistry
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