Cargando…
Novel field-portable high-pressure adsorbent tube sampler prototype for the direct in situ preconcentration of trace compounds in gases at their working pressures: application to biomethane
In Europe, renewable energy gases such as biomethane are aimed at substituting natural gas provided their stringent compliance to natural gas quality standards stipulating maximal levels of several chemical trace compounds (TC). Preconcentration is generally required to detect TC and inasmuch as bio...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8966642/ https://www.ncbi.nlm.nih.gov/pubmed/35424932 http://dx.doi.org/10.1039/d2ra00601d |
_version_ | 1784678683063091200 |
---|---|
author | Lecharlier, Aurore Carrier, Hervé Bouyssiere, Brice Caumette, Guilhem Chiquet, Pierre Le Hécho, Isabelle |
author_facet | Lecharlier, Aurore Carrier, Hervé Bouyssiere, Brice Caumette, Guilhem Chiquet, Pierre Le Hécho, Isabelle |
author_sort | Lecharlier, Aurore |
collection | PubMed |
description | In Europe, renewable energy gases such as biomethane are aimed at substituting natural gas provided their stringent compliance to natural gas quality standards stipulating maximal levels of several chemical trace compounds (TC). Preconcentration is generally required to detect TC and inasmuch as biomethane is compressed for injection in the natural gas grid, preconcentration is commonly either done by collecting the bulk pressurized gas in a high-pressure cylinder or by first depressurizing it to collect a bulk volume in e.g. a gas sampling bag. Such whole gas samples are then transported to the lab and transferred to a preconcentration unit, entailing contamination and TC loss risks. Therefore, here a novel handy field-portable device for the direct in situ high-pressure preconcentration of TC is presented, enabling to sample gases at pressures up to 200 bar(a) through a self-assembled Tenax®TA + Carbopack™X multibed adsorbent tube. The effect of the gas sampling pressure on the preconcentration of TC on adsorbent tubes was evaluated using a synthetic gas mixture containing 41 halogenated volatile organic compounds each at 1 ppm(mol) in N(2). At given normalized sampled volumes and in the pressure range 5–100 bar(a) handled in French gas transport grids, the pressure had no influence on the preconcentration when the gas circulates through the adsorbent tubes and as long as the adsorbents are not saturated. Next, for the first time, a real biomethane stream was sampled using the novel direct high-pressure preconcentration method on Tenax®TA + Carbopack™X multibed adsorbent tubes, allowing to preconcentrate, in a single sampling run, a wide range of volatile organic TC. More than 26 distinct TC were detected, belonging to seven chemical families: alkenes, aromatics, alkanes (linear, cyclic and polycyclic), sulphur-compounds and terpenes, with linear alkanes (pentane, heptane, octane) and terpenes predominating. Semi-quantification indicated pentane, dimethylcyclopropane, hexane, heptane, octane, α-pinene and camphene are present at a ≤1 ppm(mol) concentration threshold in the biomethane. |
format | Online Article Text |
id | pubmed-8966642 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-89666422022-04-13 Novel field-portable high-pressure adsorbent tube sampler prototype for the direct in situ preconcentration of trace compounds in gases at their working pressures: application to biomethane Lecharlier, Aurore Carrier, Hervé Bouyssiere, Brice Caumette, Guilhem Chiquet, Pierre Le Hécho, Isabelle RSC Adv Chemistry In Europe, renewable energy gases such as biomethane are aimed at substituting natural gas provided their stringent compliance to natural gas quality standards stipulating maximal levels of several chemical trace compounds (TC). Preconcentration is generally required to detect TC and inasmuch as biomethane is compressed for injection in the natural gas grid, preconcentration is commonly either done by collecting the bulk pressurized gas in a high-pressure cylinder or by first depressurizing it to collect a bulk volume in e.g. a gas sampling bag. Such whole gas samples are then transported to the lab and transferred to a preconcentration unit, entailing contamination and TC loss risks. Therefore, here a novel handy field-portable device for the direct in situ high-pressure preconcentration of TC is presented, enabling to sample gases at pressures up to 200 bar(a) through a self-assembled Tenax®TA + Carbopack™X multibed adsorbent tube. The effect of the gas sampling pressure on the preconcentration of TC on adsorbent tubes was evaluated using a synthetic gas mixture containing 41 halogenated volatile organic compounds each at 1 ppm(mol) in N(2). At given normalized sampled volumes and in the pressure range 5–100 bar(a) handled in French gas transport grids, the pressure had no influence on the preconcentration when the gas circulates through the adsorbent tubes and as long as the adsorbents are not saturated. Next, for the first time, a real biomethane stream was sampled using the novel direct high-pressure preconcentration method on Tenax®TA + Carbopack™X multibed adsorbent tubes, allowing to preconcentrate, in a single sampling run, a wide range of volatile organic TC. More than 26 distinct TC were detected, belonging to seven chemical families: alkenes, aromatics, alkanes (linear, cyclic and polycyclic), sulphur-compounds and terpenes, with linear alkanes (pentane, heptane, octane) and terpenes predominating. Semi-quantification indicated pentane, dimethylcyclopropane, hexane, heptane, octane, α-pinene and camphene are present at a ≤1 ppm(mol) concentration threshold in the biomethane. The Royal Society of Chemistry 2022-03-30 /pmc/articles/PMC8966642/ /pubmed/35424932 http://dx.doi.org/10.1039/d2ra00601d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Lecharlier, Aurore Carrier, Hervé Bouyssiere, Brice Caumette, Guilhem Chiquet, Pierre Le Hécho, Isabelle Novel field-portable high-pressure adsorbent tube sampler prototype for the direct in situ preconcentration of trace compounds in gases at their working pressures: application to biomethane |
title | Novel field-portable high-pressure adsorbent tube sampler prototype for the direct in situ preconcentration of trace compounds in gases at their working pressures: application to biomethane |
title_full | Novel field-portable high-pressure adsorbent tube sampler prototype for the direct in situ preconcentration of trace compounds in gases at their working pressures: application to biomethane |
title_fullStr | Novel field-portable high-pressure adsorbent tube sampler prototype for the direct in situ preconcentration of trace compounds in gases at their working pressures: application to biomethane |
title_full_unstemmed | Novel field-portable high-pressure adsorbent tube sampler prototype for the direct in situ preconcentration of trace compounds in gases at their working pressures: application to biomethane |
title_short | Novel field-portable high-pressure adsorbent tube sampler prototype for the direct in situ preconcentration of trace compounds in gases at their working pressures: application to biomethane |
title_sort | novel field-portable high-pressure adsorbent tube sampler prototype for the direct in situ preconcentration of trace compounds in gases at their working pressures: application to biomethane |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8966642/ https://www.ncbi.nlm.nih.gov/pubmed/35424932 http://dx.doi.org/10.1039/d2ra00601d |
work_keys_str_mv | AT lecharlieraurore novelfieldportablehighpressureadsorbenttubesamplerprototypeforthedirectinsitupreconcentrationoftracecompoundsingasesattheirworkingpressuresapplicationtobiomethane AT carrierherve novelfieldportablehighpressureadsorbenttubesamplerprototypeforthedirectinsitupreconcentrationoftracecompoundsingasesattheirworkingpressuresapplicationtobiomethane AT bouyssierebrice novelfieldportablehighpressureadsorbenttubesamplerprototypeforthedirectinsitupreconcentrationoftracecompoundsingasesattheirworkingpressuresapplicationtobiomethane AT caumetteguilhem novelfieldportablehighpressureadsorbenttubesamplerprototypeforthedirectinsitupreconcentrationoftracecompoundsingasesattheirworkingpressuresapplicationtobiomethane AT chiquetpierre novelfieldportablehighpressureadsorbenttubesamplerprototypeforthedirectinsitupreconcentrationoftracecompoundsingasesattheirworkingpressuresapplicationtobiomethane AT lehechoisabelle novelfieldportablehighpressureadsorbenttubesamplerprototypeforthedirectinsitupreconcentrationoftracecompoundsingasesattheirworkingpressuresapplicationtobiomethane |