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Rapid Methane Storage in Seawater Via Clathrate Hydrates

23 Pages Posted: 12 Jul 2018 Publication Status: Review Complete

See all articles by Asheesh Kumar

Asheesh Kumar

National University of Singapore (NUS) - Department of Chemical and Biomolecular Engineering

Hari Prakash Veluswamy

National University of Singapore (NUS) - Department of Chemical and Biomolecular Engineering

Rajnish Kumar

Indian Institute of Technology (IIT), Madras - Department of Chemical Engineering

Praveen Linga

National University of Singapore (NUS) - Department of Chemical and Biomolecular Engineering

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Abstract

Storing natural gas in the form of clathrate hydrates (termed as Solidified Natural Gas, SNG) is highly advantageous as it is non-explosive, environmentally benign and offers a relatively compact mode of natural gas storage with high volumetric storage capacity. Here for the first time, we demonstrate rapid methane storage in seawater and saline water (1.1 mol% NaCl solution) via clathrate hydrates aided by 5.56 mol% THF in a simple quiescent reactor configuration. We report extremely fast formation kinetics with methane uptake of 89.2 (±2.0) v/v and 88.0 (±5.4) v/v in saline water and seawater, respectively. Further, molecular insights of the hydrate formation in presence of NaCl is derived through high-pressure calorimetry, in-situ Raman, and powder X-ray diffraction analysis. Our findings render SNG technology very attractive to store/transport methane for large-scale storage needs and low production facilities like stranded gas fields or biogas manufacturing plants.

Suggested Citation

Kumar, Asheesh and Veluswamy, Hari Prakash and Kumar, Rajnish and Linga, Praveen, Rapid Methane Storage in Seawater Via Clathrate Hydrates (2018). Available at SSRN: https://ssrn.com/abstract=3212833 or http://dx.doi.org/10.2139/ssrn.3212833
This version of the paper has not been formally peer reviewed.

Asheesh Kumar

National University of Singapore (NUS) - Department of Chemical and Biomolecular Engineering

Singapore

Hari Prakash Veluswamy

National University of Singapore (NUS) - Department of Chemical and Biomolecular Engineering

Singapore

Rajnish Kumar

Indian Institute of Technology (IIT), Madras - Department of Chemical Engineering ( email )

India

Praveen Linga (Contact Author)

National University of Singapore (NUS) - Department of Chemical and Biomolecular Engineering ( email )

Singapore

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