Study shows kelp can remove carbon and nitrogen pollution


January 25, 2023

The water-filtering abilities of farmed kelp could help reduce marine pollution in coastal areas, according to a new University of Alaska Fairbanks-led study.

The paper, published in the January issue of Aquaculture Journal, analyzed carbon and nitrogen levels at two mixed-species kelp farms in Southcentral and Southeast Alaska during the 2020-21 growing season. Tissue and seawater samples showed that seaweed species may have different capabilities to remove nutrients from their surroundings.

ā€œSome seaweeds are literally like sponges ā€” they suck and suck and never saturate,ā€ said Sche...

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