Synergistic Performance of Pectin with Monoethylene glycol as Environment Friendly and Sustainable Hydrate Inhibitor
J. Environ. Nanotechnol., Volume 13, No 2 (July 2024) pp. 331-338
Abstract
This study evaluates pectin as a biodegradable, kinetic hydrate inhibitor (KHI) and examines its synergistic action with monoethylene glycol (MEG) for hydrate management. Hydrate inhibition was assessed from the induction time (IT) for methane hydrate formation at pectin concentrations of 0.25 wt%, 0.5 wt%, and 1 wt%, using methane at 7.6 MPa and a hydrate equilibrium temperature of 10.45 ℃. The system was cooled at a constant rate of 1℃ per hour below the hydrate equilibrium temperature. Pectin showed slightly lower inhibition performance than KHIs, but its biodegradable and sustainable nature indicates potential for reducing dependence on conventional non-biodegradable inhibitor polymers. Blending pectin with MEG improved the inhibition performance, demonstrating a synergistic effect that became pronounced with increasing MEG concentration. The blend provides an environmentally conscious approach for controlling hydrate formation in oil and gas flowlines, where chemical discharge and persistence are important considerations. The combination of a renewable biopolymer and MEG offers a promising basis for developing more sustainable hydrate-management strategies, while supporting further investigation of biodegradable materials for environmentally safer deep-sea flow assurance applications.
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