Spatially-explicit water balance implications of carbon capture and sequestration

Abstract

Implementation of carbon capture and sequestration (CCS) will increase water demand due to the cooling water requirements of CO 2 capture equipment. If the captured CO 2 is injected into saline aquifers for sequestration, brine may be extracted to manage the aquifer pressure, and can be desalinated to provide additional freshwater supply. We conduct a geospatial analysis to determine how CCS may affect local water supply and demand across the contiguous United States. We calculate baseline indices for each county in the year 2005, and project future water supply and demand with and without CCS through 2030. We conduct sensitivity analyses to identify the system parameters that most significantly affect water balance. Water supply changes due to inter-annual variability and projected climate change are overwhelmingly the most significant sources of variation. CCS can have strong local effects on water supply and demand, but overall it has a modest effect on water balances.

Surface Engineering of Zr BDC Nanoparticles via Conjugation with Lysine to Enhance the CO2/N2 Separation Performance of Chitosan Mixed Matrix Membranes under Dry and Humid Conditions

“…Additionally, higher moisture content on the sweep side dilutes the permeated CO 2 concentration through the membrane in the sweep side, thus increasing the driving force. According to Quinn et al, the moisture content in the feed and sweep side increases CO 2 permeability. On further increase in the moisture content beyond 1.67, a minor loss in the CO 2 permeance and flux but a major loss in the CO 2 /N 2 selectivity were observed due to the swelling of the CS matrix.…”

Mining Nontraditional Water Sources for a Distributed Hydrogen Economy

“…Additionally, with the number of seawater desalination plants growing in response to water scarcity, seawater is also a promising source water which can provide relatively large flow rates for electrolyzers. Resource extraction (i.e., upstream oil and gas, hydraulic fracturing operations, and mining) and CO 2 sequestration processes also produce large volumes of water, , providing opportunities for the application of water electrolysis at such sites.…”

Hydrological limits to carbon capture and storage

“…and economic costs 56,57 . Furthermore, there are also opportunities to use desalinated brine from saline carbon dioxide sequestration aquifers to provide alternative freshwater sources and offset the additional water requirements of CCS 33 . These are economic, institutional, and nonbiophysical factors that our hydrological model were unable to take into account.…”

“…Previous research has simulated water risks of power generation with CCS in the United States [31][32][33][34] , Europe 35 , and the UK 36 . These studies, however, did not adopt a monthly hydrological model to quantify potential impacts on water resources.…”