Greenhouse gases emissions in liquified natural gas as a marine fuel: Life cycle analysis and reduction potential Academic Article uri icon

abstract

  • AbstractSubstantial increases in shale gas production due to advances in hydraulic fracturing have created tremendous monetization and sustainable development opportunities, one of which is liquified natural gas (LNG). The International Maritime Organization (IMO) has targeted reducing greenhouse gas (GHG) emissions from shipping by 50% by 2050. Conventional shipping fuels currently used are heavy fuel oil (HFO) and marine gas/diesel oil (MGO/MDO). There has been growing interest in using LNG as a shipping fuel because of its competitive cost, availability, and the presence of bunkering infrastructure. A thorough literature review of LNG life cycle GHG emissions shows variation depending on the following factors: shale gas extraction, pretreatment, pipeline transportation distance, liquefaction plant capacity/technology, and ship propulsion system. Compared to conventional fuels, LNG can reduce life cycle emissions up to 18%. Incorporating renewablesbased power generation in liquefaction can reduce emissions by a further 5%10% (renewableassisted LNG). The reduction potential and economic effects of this modification on LNG cost are examined and it is shown that low windbased electricity prices can make renewableassisted LNG competitive. A comprehensive understanding of the factors impacting LNG emissions help identify the current and future potential of LNG in reducing shipping industry emissions and providing a shortterm transitional fuel until it is supplanted with decarbonized fuels. This paper also uses waterenergy nexus to examine the impact of responsible water management on the carbon footprint of LNG.

published proceedings

  • CANADIAN JOURNAL OF CHEMICAL ENGINEERING

altmetric score

  • 1.5

author list (cited authors)

  • Al-Douri, A., Alsuhaibani, A. S., Moore, M., Nielsen, R. B., El-Baz, A. A., & El-Halwagi, M. M.

citation count

  • 19

complete list of authors

  • Al-Douri, Ahmad||Alsuhaibani, Abdulrahman S||Moore, Margaux||Nielsen, Rasmus B||El-Baz, Amro A||El-Halwagi, Mahmoud M

publication date

  • June 2022

publisher