Low-emission generation of renewable biohydrogen and biomethane from organic waste

A modular point-of-waste to renewable energy system for converting organic feedstock material to biomethane (“System”) comprising

• a waste homogenization tank adapted to receive the organic feedstock material and adapted to reduce the feedstock material to an approximately consistent size to provide a homogenized feedstock material,
• a feedstock preparation tank adapted to receive the homogenized feedstock material from the waste homogenization tank and adapted to mix the homogenized feedstock material with a liquid to provide a feedstock slurry,
• an anaerobic digester reactor adapted to receive the feedstock slurry from the feedstock preparation tank and adapted to generate biomethane,
• a gas treatment line adapted to receive the biomethane from the anaerobic digestor reactor and adapted to treat the biomethane to remove other components from the biomethane and having a termination to exit the biomethane for subsequent use, and
• optionally a photosynthetic reactor including a photosynthetic algae adapted to receive gas from the anaerobic digester reactor and/or the gas treatment line and adapted to remove CO2.

A method of treating an organic feedstock at a point-of-waste location to convert the organic feedstock to biohydrogen and optionally biomethane comprising the steps of

• a. providing the organic feedstock to a modular system comprising
• a waste homogenization tank adapted to receive the organic feedstock material and adapted to reduce the feedstock material to an approximately consistent size to provide a homogenized feedstock material,
• a feedstock preparation tank adapted to receive the homogenized feedstock material from the waste homogenization tank and adapted to mix the homogenized feedstock material with a liquid to provide a feedstock slurry,
• a pretreatment tank adapted to receive the feedstock slurry from the feedstock preparation tank and adapted to treat the feedstock slurry with acid and/or heat,
• a hydrolysis tank adapted to receive the treated feedstock slurry from the pretreatment tank and adapted to generate biohydrogen from the treated feedstock slurry,
• a gas treatment line adapted to receive the biohydrogen from the hydrolysis tank and adapted to treat the biohydrogen to remove other components from the biohydrogen and having a termination to exit the biohydrogen for subsequent use,
• optionally an anaerobic digester reactor adapted to receive the treated feedstock slurry and adapted to generate biomethane, and
• optionally a photosynthetic reactor including a photosynthetic algae adapted to receive gas from the hydrolysis tank, the anaerobic digester reactor and/or the gas treatment line and adapted to remove CO2,
• b. treating the organic feedstock in the modular system, and
• c. obtaining biohydrogen and optionally biomethane.