---

This book brings together recent research from across the world on enriched methane, and examines the production, distribution and use of this resource in internal combustion engines and gas turbines. It aims to provide readers with an extensive account of potential technological breakthroughs which have the capacity to revolutionize energy systems. Enriched methane, a gas mixture composed by methane and hydrogen (10-30%vol), constitutes the first realistic step towards the application of hydrogen as an energy vector. It provides strong benefits in terms of emissions reduction, that is -11% of CO2, eq emission with the combustion of a 30%vol H2 mixture, if hydrogen is produced from renewable energy sources. Enriched methane offers the following advantages: - it can be produced at competitive costs; - it can be distributed by means of the medium pressure natural gas grid; - it can be stored in traditional natural gas storage systems; - it can feed natural gas internal combustion engine, improving conversion efficiency. This book is intended for academics in chemical engineering and energy production, distribution and storage. It is also intended for energy producers, engineering companies and R&D organizations.

---

Enriched Methane: a sustainable solution.- Enriched Methane production through solar energy: METISOL project.- Bio-hythane production from food waste by dark fermentation coupled with anaerobic digestion process.- Biological hydrogen production via anaerobic fermentation.- Biphasic production of hydrogen and methane from waste lactose in cyclic-batch reactors.- States and challenges for high-value biohythane production from waste biomass by dark fermentation technology.- Techno-Economic evaluation of an integrated biological hydrogen and biogas (BioHythane) production process.- Biohydrogen production from xylose at extreme thermophilic temperatures (70 °C) by mixed culture fermentation.- Design of a novel biohythane process with high H2 and CH4 production rates.- Biohydrogen production from wheat straw hydrolysate using Caldicellulosiruptor saccharolyticus followed by biogas production in a two-step uncoupled process.- Enriched methane production through a low temperature steam reforming reactor.- The use of the natural-gas pipeline infrastructure for hydrogen transport in a changing market structure.- Conceptual Design of a Hythane-based Infrastructure System for Combined Power and District Heat Production.- Evaluation of Natural Gas Pipeline Materials and Infrastructure for Hydrogen/Hythane Service.- Can the addition of hydrogen to natural gas reduce the explosion risk?.- Alternative carriers for remote renewable energy sources using existing CNG infrastructure.- Experimental tests of blends of hydrogen and natural gas in light-duty vehicles.- Optimization of Slitlike Carbon Nanopores for Storage of hythane Fuel at Ambient Temperatures.- Effect of hydrogen addition on the performance of methane-fueled vehicles.- Flame lift-off height, velocity flow and mixing of hythane in oxy-combustion in a burner with two separated jets - Sebastien Yon.- Comparison of emissions and efficiency of a turbocharged lean-burn natural gas and hythanefueled engine.- Variable composition hydrogen/natural gas mixtures for increased engine efficiency and decreased emissions.- Using Hythane as a Fuel in a 6-Cylinder Stoichiometric Natural-gas Engine.- Combustion of hythane diluted with CO2.- Centro Ricerche FIAT: hythane fuelled engine testing.- ALT-HY-TUDE project lead by the Research Division of Gaz de France.- Malmoe hydrogen and CNG/hydrogen filling station and hythane bus project.- MhyBus: applications of hythane blend for public transport.- Exploring new production methods of hydrogen / natural gas blends for mixing into the natural gas network of the Netherlands.- Investment Decision Making for Alternative Fuel Public Transport Buses: The case of Brisbane Transport.- Hythane - Ecological fuel for combustion engine.

---