This preprint proposes a composite water treatment matrix combining cannabis-derived activated carbon, natural zeolite (clinoptilolite), diatomaceous earth, calcium bentonite, and basalt flour in defined proportions, pressed into hexagonal tile units for staged water treatment. Each component is evaluated against peer-reviewed literature for specific contaminant classes: cannabis biochar for heavy metals and organic micropollutants; clinoptilolite for ammonium and heavy metals; diatomaceous earth for mechanical particulate removal; calcium bentonite for pharmaceutical compound adsorption; basalt flour for remineralisation. End-of-life characterisation identifies all components as soil-beneficial amendments. A three-phase experimental protocol is proposed for validation.
John Carter (Mon,) studied this question.