Which types of pollution or contaminants can biochar remove?

Quite a few - please read on!

6/19/20261 min read

Biochar is capable of removing and mitigating several types of pollution and contaminants across different applications. In general can perform similarly to Activated Carbon for many compounds/pollutants. Biochar can also be steam/acid activated for specialized use in water treatment but already does contaminant management without activation.

  • Waterborne contaminants: Thanks to its highly porous structure, biochar can be used for water filtration to adsorb heavy metals, pharmaceuticals, and other contaminants from water streams.

  • Agricultural runoff pollution: When applied to farmland, biochar holds onto nitrogen and other nutrients, preventing them from leaching away and significantly reducing nutrient runoff pollution.

  • Heavy metals, PAHs, PFAS (more effective if activated), Organic pollutants (pesticides, hydrocarbons)

  • Odour contaminants: When mixed into compost, biochar helps control and suppress odorous gas emissions, specifically ammonia and hydrogen sulphide (H₂S)

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