Waste-to-Energy
Pi Green’s Waste-to-Energy solutions turn organic waste into biogas, CBG and Bio-CNG through modular anaerobic digestion, decentralised CBG systems and advanced gas purification technologies. Designed for food waste, cow dung and large-scale biogas plants, the solutions maximise energy recovery while supporting lower-waste, circular and sustainable operations.
System Snapshot
Bagless
design
Requires no compressed air
Easy
Maintenance
Works with legacy systems
Food Waste to Biogas
Designed to process food waste from industries, hotels, hospitals, IT parks and institutions.
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Dual-stage anaerobic fermentation
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Higher biogas yield
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No agitators required
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No scum formation and reduced odour
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Modular, skid-mounted system
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Biogas can be used as an alternative to LPG/PNG or converted into electricity
Decentralised CBG from Cow Dung
A decentralised, net-zero CBG solution designed around better manure and digestate management.
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Cow dung-based CBG production
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Integrated manure and digestate management
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Maximises resource recovery
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Supports a circular and environmentally responsible CBG ecosystem
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Designed under the White Category framework
VSA – High-Efficiency Biogas Upgradation
A multi-layered, dual-stage Vacuum Swing Adsorption system that uses molecular sieves to separate CO₂ and enrich methane.
High-performance
molecular sieves
>96%
methane purity
<3%
methane slip
Membrane Separation – Modular Gas Purification
Uses the selective permeability of membranes to separate CO₂ from CH₄.
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Up to 98% methane purity
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<3% methane slip
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Modular, containerised system
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Suitable for scalable biogas upgradation
Scrubbing Technologies – Reliable Gas Purification
High Pressure Water Scrubber (HPWS) uses counter-current gas-water flow to selectively absorb CO₂.
Rugged
construction
Relatively simple
to operate
~97%
methane recovery
3–5%
methane slip
Amine Scrubber
Uses a chemical solvent to selectively remove CO₂ from biogas.
>99%
methane purity
<0.1%
methane loss
H₂S and CO₂
removal
Together, these technologies enable Pi Green to offer biogas purification and upgradation solutions tailored to different plant sizes, feedstocks and performance requirements.
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Year: 2035
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Industry: Finance
Explain what makes the business unique. Identify the qualities that set it apart from its competitors and describe them, staying true to the brand's authentic voice. Add engaging details to catch readers' interest and hold their attention.
Client: Name
Explain what makes the business unique. Identify the qualities that set it apart from its competitors and describe them, staying true to the brand's authentic voice. Add engaging details to catch readers' interest and hold their attention.
Year: 2035
Explain what makes the business unique. Identify the qualities that set it apart from its competitors and describe them, staying true to the brand's authentic voice. Add engaging details to catch readers' interest and hold their attention.
Industry: Finance
Explain what makes the business unique. Identify the qualities that set it apart from its competitors and describe them, staying true to the brand's authentic voice. Add engaging details to catch readers' interest and hold their attention.