Solid CO2 storage by hydrate-based geo sequestration

Natural gas hydrate energy resource is almost twice as much as the energy contained in all fossil fuel reserves. Significant work is in progress to identify a method to produce methane (CH4) from hydrate deposits across the globe. Many strategies have been suggested to recover CH4 in an efficient way, such as depressurization, thermal stimulation, and inhibitor addition. All methods listed above may trigger slope failures due to the decomposition of hydrate deposits in the continental slope. The storage of CO2 as a solid form (as CO2-hydrate) is the best and most attractive method for CO2 sequestration. Being a light hydrocarbon, natural gas releases less CO2 per unit of energy. In addition, if natural gas (recovered from gas hydrate) is used instead of coal-fired power plants, it will help to reduce CO2 emissions to the atmosphere. © 2022 Elsevier Inc. All rights reserved.