Natural gas hydrate resources and hydrate technologies: a review and analysis of the associated energy and global warming challenges

Abstract

The new scenario involving the rapid energy supply transition from oil-based to natural gas-based undoubtedly affects the future carbon capture and storage (CCS) and offers an opportunity for the use...

Multiscale Piezoelasticity of Methane Gas Hydrates: From Bonds to Cages to Lattices

“…However, unburned methane gas has 84 times greater global warming potential than carbon dioxide . It is reported that the energy contained in the natural hydrates is twice the amount of energy contained in the fossil fuel throughout the world . Considering the problems of energy scarcity and global warming, gas hydrates have become competitive and environmentally friendly candidates to meet the ever-increasing energy demand.…”

Zeolitic ice: A route toward net zero emissions

“…Although each technique has some advantages, it also shows some drawbacks. For example, membrane separation is expensive with an estimated cost of 24-48$ per ton depending on working conditions [154]. Moreover, while inorganic ones do not perform well in terms of reliability and cost control, organic membranes can not simultaneously reach high selectivity and high permeability.…”

“…It is important to stress here that NGH technology is complementary rather than competitive with existing technologies. In fact, NGH technology is best working in and hybrid mode due to their simple modular construction and operation which reduce the investment threshold by allowing to taking profit from the existing facilities and infrastructure [154].…”

“…Moreover, the recovery or regeneration can be achieved simply by depressurization or thermal exchange at ambient conditions. This makes it energy-efficient and thus cost-effective carbon capture technology with estimated energy consumption below 0.60 kWh per ton CO 2 [154]. Although slow kinetics is still a problem, the thermodynamic requirements are much lower compared to NGH or hydrogen hydrates.…”

The synthesis of porous graphitic carbon nitride with N3C nitrogen vacancies by a CaCO3 template for improved photocatalytic H2 evolution

“…With the rapid development of industrialization and urbanization, the high consumption of fossil fuels such as coal, oil and natural gas leads to severe air pollution and resource shortages. [1][2][3] Hydrogen energy (H 2 ), a low-carbon and zerocarbon energy source, has been recognized as one of the most promising energy carriers to solve energy and environmental issues for the sustainable development of society. 4,5 Various technologies have been adopted to produce H 2 , among which water splitting driven by solar energy has attracted extensive attention, because this process is clean, environmentally friendly and low-cost.…”