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Updated: Jun 6, 2025

Coupling Carbon Capture from a Power Plant with Semi-automated Open Raceway Ponds for Microalgae Cultivation
Published on: August 14, 2020
Carbon dioxide removal (CDR) potential in temperate macroalgal forests: A comparative study of chemical and
Ju-Hyoung Kim1, Hyung Woo Lee1, Juhyung Lee2
1Department of Aquaculture and Aquatic Science, Kunsan National University, Gunsan 54150, South Korea.
Abstract:
The carbon dioxide removal (CDR) capacity of macroalgae, a crucial component in climate regulation, has gained increasing attention. However, accurately estimating the CDR potential of macroalgae in natural conditions remains challenging, necessitating the use of multiple independent methods to reduce the uncertainties in these estimates. In this study, we compared two methods for estimating net ecosystem production (NEP), a key parameter in determining CDR potential: 1) NEPChem., derived from seawater carbonate chemistry and 2) NEPBiol., based on photorespiratory measurements using benthic tent incubation. This study, conducted in a macroalgal forest dominated by Ecklonia cava, involved simultaneous measurements of NEPChem. and NEPBiol. over a course of one year. Our findings revealed that NEPBiol. was 1.23 times higher than NEPChem., with an annual rate of 3.69 tons CO2 ha-1 yr-1. These results suggest that both independent methods are reliable and can be used complementarily to improve the accuracy of NEP measurements, thereby enhancing estimates of the CDR potential of macroalgae.
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