Flue Gas and CO2 Geosequestration in Surat and Bowen Basin Coals

考虑到气候变化，需要大幅减少向大气排放的二氧化碳。 最好在短期内将二氧化碳永久储存在地下。最便宜和最安全的选择之一是使用煤层，然后释放出宝贵的甲烷。这些额外的甲烷的市场价值约为90亿美元，这将封存成本从每吨二氧化碳约56美元降低到25美元。 煤对二氧化碳有很强的亲和力，因此发电站的烟道气流可以直接注入，无需设备捕获二氧化碳，为每个大型发电站节省约5亿美元。

Climate change considerations require that CO2 emissions to atmosphere be severely reduced. This is best done in the short term by permanently storing the CO2 underground. Amongst the cheapest and safest options are to use coal seams, which then release valuable methane. The market value of this extra methane is ~$9billion and this reduces the cost of sequestration from ~$56 to $25/t CO2. Coal has a very strong affinity for CO2, so flue gas stream from power stations can be injected directly, eliminating the need for equipment to capture the CO2, providing savings of ~$500million for each large power station.