The Experts below are selected from a list of 786 Experts worldwide ranked by ideXlab platform
Hans-jürg Jost - One of the best experts on this subject based on the ideXlab platform.
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Field-based stable isotope analysis of carbon dioxide by mid-infrared laser spectroscopy for carbon capture and storage monitoring.
Analytical Chemistry, 2014Co-Authors: Robert Van Geldern, Alexandra Szizybalski, Martin Nowak, Anssi Myrttinen, Johannes A. C. Barth, Martin Zimmer, Hans-jürg JostAbstract:A newly developed isotope ratio laser spectrometer for CO2 analyses has been tested during a tracer experiment at the Ketzin pilot site (northern Germany) for CO2 storage. For the experiment, 500 tons of CO2 from a natural CO2 reservoir was injected in supercritical state into the reservoir. The carbon stable isotope value (δ13C) of injected CO2 was significantly different from background values. In order to observe the breakthrough of the isotope tracer continuously, the new instruments were connected to a stainless steel Riser Tube that was installed in an observation well. The laser instrument is based on tunable laser direct absorption in the mid-infrared. The instrument recorded a continuous 10 day carbon stable isotope data set with 30 min resolution directly on-site in a field-based laboratory container during a tracer experiment. To test the instruments performance and accuracy the monitoring campaign was accompanied by daily CO2 sampling for laboratory analyses with isotope ratio mass spectrometr...
Duen Gang Mou - One of the best experts on this subject based on the ideXlab platform.
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short communication ambient gas exchange enabled stirred culture bottle a stirred tank reactor alternative to shake flasks for high gas liquid mass transfer
Industrial Biotechnology, 2010Co-Authors: Duen Gang MouAbstract:Abstract Through a gas vent Riser Tube or a gas intake downer Tube, spent gas exhaust and ambient substrate gas intake in a stirred bottle culture are an-order-of-magnitude enhanced without line gas sparging when compared to similarly sized shake flask cultures. In addition to realistic impeller mixing, the novel in situ ambient gas pumping design, tested in a 500 mL wide-mouth bottle, produced an E. coli growth at 90% working volume equal to or better than that of a reciprocating 250 mL Erlenmeyer flask at 20% working volume through increased gas ventilation and gas hold-up.
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ambient gas exchange enabled stirred culture bottle a stirred tank reactor alternative to shake flasks for high gas liquid mass
2010Co-Authors: Duen Gang MouAbstract:Through a gas vent Riser Tube or a gas intake downer Tube, spent gas exhaust and ambient substrate gas intake in a stirred bottle culture are an-order-of-magnitude enhanced without line gas sparging when compared to similarly sized shake flask cultures. In addition to realistic impeller mixing, the novel in situ ambient gas pumping design, tested in a 500 mL wide-mouth bottle, produced an E. coli growth at 90% working volume equal to or better than that of a reciprocating 250 mL Erlenmeyer flask at 20% working volume through increased gas ventilation and gas hold-up.
Johannes A. C. Barth - One of the best experts on this subject based on the ideXlab platform.
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Field-Based Stable Isotope Analysis of Carbon Dioxide by Mid- Infrared Laser Spectroscopy for Carbon Capture and Storage Monitoring
2016Co-Authors: Robert Van Geldern, Anssi Myrttinen, Martin Zimmer, Martin E. Nowak, Ra Szizybalski, Johannes A. C. BarthAbstract:ABSTRACT: A newly developed isotope ratio laser spectrometer for CO2 analyses has been tested during a tracer experiment at the Ketzin pilot site (northern Germany) for CO2 storage. For the experiment, 500 tons of CO2 from a natural CO2 reservoir was injected in supercritical state into the reservoir. The carbon stable isotope value (δ13C) of injected CO2 was significantly different from background values. In order to observe the breakthrough of the isotope tracer continuously, the new instruments were connected to a stainless steel Riser Tube that was installed in an observation well. The laser instrument is based on tunable laser direct absorption in the mid-infrared. The instrument recorded a continuous 10 day carbon stable isotope data set with 30 min resolution directly on-site in a field-based laboratory container during a tracer experiment. To test the instruments performance and accuracy the monitoring campaign was accompanied by daily CO2 sampling for laboratory analyses with isotope ratio mass spectrometry (IRMS). The carbon stable isotope ratios measured by conventional IRMS technique and by the new mid-infrared laser spectrometer agree remarkably well within analytical precision. This proves the capability of the new mid-infrared direct absorption technique to measure high precision and accurate real-time stable isotope data directly in the field. Th
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Field-based stable isotope analysis of carbon dioxide by mid-infrared laser spectroscopy for carbon capture and storage monitoring.
Analytical Chemistry, 2014Co-Authors: Robert Van Geldern, Alexandra Szizybalski, Martin Nowak, Anssi Myrttinen, Johannes A. C. Barth, Martin Zimmer, Hans-jürg JostAbstract:A newly developed isotope ratio laser spectrometer for CO2 analyses has been tested during a tracer experiment at the Ketzin pilot site (northern Germany) for CO2 storage. For the experiment, 500 tons of CO2 from a natural CO2 reservoir was injected in supercritical state into the reservoir. The carbon stable isotope value (δ13C) of injected CO2 was significantly different from background values. In order to observe the breakthrough of the isotope tracer continuously, the new instruments were connected to a stainless steel Riser Tube that was installed in an observation well. The laser instrument is based on tunable laser direct absorption in the mid-infrared. The instrument recorded a continuous 10 day carbon stable isotope data set with 30 min resolution directly on-site in a field-based laboratory container during a tracer experiment. To test the instruments performance and accuracy the monitoring campaign was accompanied by daily CO2 sampling for laboratory analyses with isotope ratio mass spectrometr...
Robert Van Geldern - One of the best experts on this subject based on the ideXlab platform.
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Field-based stable isotope analysis of carbon dioxide by mid-infrared laser spectroscopy for carbon capture and storage monitoring.
Analytical Chemistry, 2014Co-Authors: Robert Van Geldern, Alexandra Szizybalski, Martin Nowak, Anssi Myrttinen, Johannes A. C. Barth, Martin Zimmer, Hans-jürg JostAbstract:A newly developed isotope ratio laser spectrometer for CO2 analyses has been tested during a tracer experiment at the Ketzin pilot site (northern Germany) for CO2 storage. For the experiment, 500 tons of CO2 from a natural CO2 reservoir was injected in supercritical state into the reservoir. The carbon stable isotope value (δ13C) of injected CO2 was significantly different from background values. In order to observe the breakthrough of the isotope tracer continuously, the new instruments were connected to a stainless steel Riser Tube that was installed in an observation well. The laser instrument is based on tunable laser direct absorption in the mid-infrared. The instrument recorded a continuous 10 day carbon stable isotope data set with 30 min resolution directly on-site in a field-based laboratory container during a tracer experiment. To test the instruments performance and accuracy the monitoring campaign was accompanied by daily CO2 sampling for laboratory analyses with isotope ratio mass spectrometr...
Anssi Myrttinen - One of the best experts on this subject based on the ideXlab platform.
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Field-Based Stable Isotope Analysis of Carbon Dioxide by Mid- Infrared Laser Spectroscopy for Carbon Capture and Storage Monitoring
2016Co-Authors: Robert Van Geldern, Anssi Myrttinen, Martin Zimmer, Martin E. Nowak, Ra Szizybalski, Johannes A. C. BarthAbstract:ABSTRACT: A newly developed isotope ratio laser spectrometer for CO2 analyses has been tested during a tracer experiment at the Ketzin pilot site (northern Germany) for CO2 storage. For the experiment, 500 tons of CO2 from a natural CO2 reservoir was injected in supercritical state into the reservoir. The carbon stable isotope value (δ13C) of injected CO2 was significantly different from background values. In order to observe the breakthrough of the isotope tracer continuously, the new instruments were connected to a stainless steel Riser Tube that was installed in an observation well. The laser instrument is based on tunable laser direct absorption in the mid-infrared. The instrument recorded a continuous 10 day carbon stable isotope data set with 30 min resolution directly on-site in a field-based laboratory container during a tracer experiment. To test the instruments performance and accuracy the monitoring campaign was accompanied by daily CO2 sampling for laboratory analyses with isotope ratio mass spectrometry (IRMS). The carbon stable isotope ratios measured by conventional IRMS technique and by the new mid-infrared laser spectrometer agree remarkably well within analytical precision. This proves the capability of the new mid-infrared direct absorption technique to measure high precision and accurate real-time stable isotope data directly in the field. Th
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Field-based stable isotope analysis of carbon dioxide by mid-infrared laser spectroscopy for carbon capture and storage monitoring.
Analytical Chemistry, 2014Co-Authors: Robert Van Geldern, Alexandra Szizybalski, Martin Nowak, Anssi Myrttinen, Johannes A. C. Barth, Martin Zimmer, Hans-jürg JostAbstract:A newly developed isotope ratio laser spectrometer for CO2 analyses has been tested during a tracer experiment at the Ketzin pilot site (northern Germany) for CO2 storage. For the experiment, 500 tons of CO2 from a natural CO2 reservoir was injected in supercritical state into the reservoir. The carbon stable isotope value (δ13C) of injected CO2 was significantly different from background values. In order to observe the breakthrough of the isotope tracer continuously, the new instruments were connected to a stainless steel Riser Tube that was installed in an observation well. The laser instrument is based on tunable laser direct absorption in the mid-infrared. The instrument recorded a continuous 10 day carbon stable isotope data set with 30 min resolution directly on-site in a field-based laboratory container during a tracer experiment. To test the instruments performance and accuracy the monitoring campaign was accompanied by daily CO2 sampling for laboratory analyses with isotope ratio mass spectrometr...
