eprintid: 17706
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/77/06
datestamp: 2023-12-19 03:24:02
lastmod: 2023-12-19 03:24:02
status_changed: 2023-12-19 03:08:31
type: conference_item
metadata_visibility: show
creators_name: Rehman, A.N.
creators_name: Lal, B.
creators_name: Pendyala, R.
creators_name: Yusoff, M.H.M.
title: Unusual CO2 hydrate formation in porous media: Implications on geo-CO2 storage laboratory testing methods
ispublished: pub
keywords: Aquifers; Hydration; Porous materials; Quartz; Sand; Site selection; Sodium chloride; Testing, Carbon dioxide hydrates; Carbon storage; Hydrate formation; Hydrate testing reactor; Laboratory testing; Porous medium; Pure water; Quartz sand; Storage capacity; Testing method, Carbon dioxide
note: cited By 2
abstract: CO2 sequestration in geological sediments as hydrates is a promising technique currently being explored by research to permanently store CO2. To achieve this, studies on site selection and best experimental practices are useful to provide recommendations for understanding and implementing the process. In this study, the kinetics of CO2 hydrate formation was evaluated in quartz sand at 4 MPa and 274.15 K to gain insight on selecting a suitable location that provides high CO2 hydrate storage capacity. The study was conducted using a stainless-steel autoclave cell and a constant cooling method in pure water and brine system (3.3 wt NaCl). The study revealed that CO2 hydrate forms faster in quartz sand achieving about 87 CO2 to hydrate conversion in pure water as opposed to 55 CO2 to hydrate conversion in the brine system. The high hydrate conversion achieved in pure water is promising to provide a potential storage capacity of CO2 in sediments. However, visual confirmation revealed that a high percentage of the hydrates in the pure water system formed at the top of the sand bed within the reactor which is unusual and undesired for practical CO2 storage field applications. Interestingly, the hydrate formed in the brine system was within the porous media pore spaces. The results thus suggest that hydrate storage techniques experimental testing should be conducted in reactors with visual capabilities to gain a proper understanding of the location of the hydrates within the porous media. © 2021
date: 2022
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127113182&doi=10.1016%2fj.matpr.2022.02.582&partnerID=40&md5=82be660b1a240c6f0e6fce43fd30f1e7
id_number: 10.1016/j.matpr.2022.02.582
full_text_status: none
publication: Materials Today: Proceedings
volume: 57
pagerange: 1363-1368
refereed: TRUE
issn: 22147853
citation:   Rehman, A.N. and Lal, B. and Pendyala, R. and Yusoff, M.H.M.  (2022) Unusual CO2 hydrate formation in porous media: Implications on geo-CO2 storage laboratory testing methods.  In: UNSPECIFIED.