Seaweed Biochar Captures Five Times More CO₂ with Treatment Before Heating
· newswise.com · popularity 20/100 · 0 similar stories today · Science & Research Methods (Discovery & Research)
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Summary
<img src="https://www.newswise.com/legacy/image.php?image=https://media.newswise.com/pio/articles/857612/6ae48bc7b1a78_1_857612.jpg&width=100&height=150" alt="Newswise image" />A research team has transformed Sargassum seaweed into a reusable carbon dioxide adsorbent by coordinating chemical treatment with heating temperature. Treating the biomass with potassium hydroxide before heating it to 400 deg.C produced biochar that captured 120.5 milligrams of CO₂ per gram at 40 deg.C, five times the capacity of untreated biochar prepared at the same temperature. The material retained 98.9% of its initial capacity after nine regeneration cycles. The findings suggest a promising route for turning marine biomass into materials that could support carbon capture while creating value from unwanted seaweed.
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