Solubility of hydrogen in water in a broad temperature and pressure range

“… § Using Eq. 6; $ m_{{\rm H_{2},G}} $ ‐water from Ref 21. $ C_{{\rm H_{2},G} }$ from the average H 2 partial pressure (in the interval) and Soave‐Redlich‐Kwong equation of state, and the k L .…”

Section: Resultsmentioning

confidence: 99%

Competition between hydrotreating and polymerization reactions during pyrolysis oil hydrodeoxygenation

Mercader

Koehorst

Heeres³

et al. 2011

AIChE Journal

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“…Although the solubility of both gases in water decreases with increasing temperatures and salinity [20,101], the elevated pressure has a far greater impact on the solubility resulting in high dissolved gas concentrations in the water phase [5]. At elevated gas partial pressure, an increase in microbial activities has been recorded, which is attributable to the high availability of gaseous substrates in the water phase [22,24,55,75].…”

Section: Microbiology Of Gas Storage Sitesmentioning

confidence: 98%

Relevance of Deep-Subsurface Microbiology for Underground Gas Storage and Geothermal Energy Production

Gniese

Bombach

Rakoczy

et al. 2013

Advances in Biochemical Engineering/Biotechnology

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This chapter gives the reader an introduction into the microbiology of deep geological systems with a special focus on potential geobiotechnological applications and respective risk assessments. It has been known for decades that microbial activity is responsible for the degradation or conversion of hydrocarbons in oil, gas, and coal reservoirs. These processes occur in the absence of oxygen, a typical characteristic of such deep ecosystems. The understanding of the responsible microbial processes and their environmental regulation is not only of great scientific interest. It also has substantial economic and social relevance, inasmuch as these processes directly or indirectly affect the quantity and quality of the stored oil or gas. As outlined in the following chapter, in addition to the conventional hydrocarbons, new interest in such deep subsurface systems is rising for different technological developments. These are introduced together with related geomicrobiological topics. The capture and long-termed storage of large amounts of carbon dioxide, carbon capture and storage (CCS), for example, in depleted oil and gas reservoirs, is considered to be an important options to mitigate greenhouse gas emissions and global warming. On the other hand, the increasing contribution of energy from natural and renewable sources, such as wind, solar, geothermal energy, or biogas production leads to an increasing interest in underground storage of renewable energies. Energy carriers, that is, biogas, methane, or hydrogen, are often produced in a nonconstant manner and renewable energy may be produced at some distance from the place where it is needed. Therefore, storing the energy after its conversion to methane or hydrogen in porous reservoirs or salt caverns is extensively discussed. All these developments create new research fields and challenges for microbiologists and geobiotechnologists. As a basis for respective future work, we introduce the three major topics, that is, CCS, underground storage of gases from renewable energy production, and the production of geothermal energy, and summarize the current stat of knowledge about related geomicrobiological and geobiotechnological aspects in this chapter. Finally, recommendations are made for future research.

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“…The overpotential may be regarded as the extra voltage needed to reduce the energy barrier of the rate determining step to a value such that the electrode reaction proceeds at a desired rate. The concentrations of the species involved in such reaction have to be normalized by a reference concentration: n [33].…”

Section: Electrolyte-platinum Contact: Butlerevolmer Equationmentioning

confidence: 99%

Transient phenomenological modeling of photoelectrochemical cells for water splitting – Application to undoped hematite electrodes

Andrade

Lopes

Ribeiro

et al. 2011

International Journal of Hydrogen Energy

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Solubility of hydrogen in water in a broad temperature and pressure range

Cited by 45 publications

References 2 publications

Competition between hydrotreating and polymerization reactions during pyrolysis oil hydrodeoxygenation

Competition between hydrotreating and polymerization reactions during pyrolysis oil hydrodeoxygenation

Relevance of Deep-Subsurface Microbiology for Underground Gas Storage and Geothermal Energy Production

Transient phenomenological modeling of photoelectrochemical cells for water splitting – Application to undoped hematite electrodes

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