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Designing a sequestering fertilizer
Ammonia adsorption on Charcoal
Asada reported that carboxyl acid groups formations natural to low temperature charcoal (below 500 C) bind ammonia exceptionally well
In designing a charcoal carrier for nutrients, we want to insure it can carry ammonia compounds
In designing a charcoal to act as a media for carrying plant nutrients, ammonia adsorption is a large plus. Asada reports in 2002 that his experiments with bamboo char carbonized at low temperatures out performs even activated carbon.  He wrote that carboxyl acid groups formations natural to low temperature charcoal bind ammonia exceptionally well.