Spatially-explicit water balance implications of carbon capture and sequestration

Publication Type

Journal Article

Date Published

01/2016

LBNL Report Number

LBNL-1003871

Abstract

Implementation of carbon capture and sequestration (CCS) will increase water demand due to the cooling water requirements of CO2 capture equipment. If the captured CO2 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.

Journal

Environmental Modelling & Software

Volume

75

Year of Publication

2016

Short Title

Environmental Modelling & Software

ISSN

13648152

Pagination

153 - 162