Methane-to-bioplastics technology takes advantage of wastewater off-gases

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Polyhydroxyalkanoates (PHAs) are biodegradable polymers that are positioned as a promising alternative to conventional plastics. They can be produced from a variety of biological and renewable feedstocks. Mango Materials produces PHAs at a pilot plant and production facility using methane-rich off-gases at the Easterly Wastewater Treatment Plant in Vacaville, Calif.

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pat 1 month ago

WWTP biogas is a moving target on CH4, H2S, NH3, moisture, and siloxanes, and those swings can hammer methanotroph performance and PHA quality. What does your front end look like on a bad day (specs after polishing for H2S and siloxanes, surge volume, and any O2 bleed), and how do you ride out a digester burp or seasonal load shift? Also curious what you use for PHA recovery and how you treat or recycle that solvent or wash water onsite.

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dee 1 month ago

WWTP off-gas is full of H2S, siloxanes, and condensate - what’s your polishing train, and how do you handle CH4 swings during wet‑weather I&I? If methane drops or O2 creeps in, do you interlock a divert-to-flare to protect the bugs, and what CH4/CO2 window keeps PHA properties stable?

Methane-to-bioplastics technology takes advantage of wastewater off-gases

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