RNG Digester Management

Containment, Gas Collection & System Optimization for RNG Digesters

Plastic Fusion Fabricators specializes in RNG (Renewable Natural Gas) digester management — the containment, biogas collection, and system optimization that keep an anaerobic digester capturing methane and converting organic waste into clean, pipeline-bound energy. We install and maintain the geomembrane covers and liners that seal a digester, collect its biogas, and contain its contents, and we keep that infrastructure performing over the life of the project. With 40+ years of geomembrane fabrication and installation across 24 states, Plastic Fusion is the partner RNG and biogas operators rely on for the physical infrastructure their digesters depend on.

An anaerobic digester is only as good as its containment. If the cover leaks, methane escapes — lost revenue and an emissions problem. If the liner fails, the digester contents reach the ground. RNG digester management, the way we practice it, is about making sure the containment and gas-collection systems do their job: capturing every bit of methane the digester produces and keeping the process sealed, contained, and optimized.

Anaerobic Digestion and the Waste We Serve

Anaerobic digesters break down organic waste in sealed conditions to produce biogas, which is upgraded to pipeline-quality renewable natural gas. We provide containment and gas collection for digesters running on the full range of feedstocks:

• Dairy and livestock manure — covered digesters and lagoons on dairy and cattle operations
• Swine waste — manure digesters on hog operations
• Food waste — organic waste digestion
• Wastewater biosolids — municipal and industrial digester gas projects

What We Provide for RNG Digesters

• Digester containment — geomembrane covers and liners that seal the digester and contain its contents
• Biogas collection — gas-collection covers that capture the methane the digester produces and channel it for upgrading
• System optimization — containment and collection engineered to maximize methane capture and output
• Digester repair and maintenance — repair and refurbishment of digester covers, liners, and containment to keep the system sealed and producing
• Equipment fabrication — custom-fabricated geomembrane components for digester and RNG containment

Why Methane Capture Matters

Capturing the methane a digester produces does two things at once: it prevents a potent greenhouse gas from escaping into the atmosphere, and it turns what would be a waste-management cost into a revenue stream. Facilities can monetize that captured methane through programs like the EPA’s Renewable Fuel Standard and regional Low-Carbon Fuel Standard programs — but only if the gas is actually captured. Tight containment and reliable gas collection are what make the economics work, and that’s exactly the infrastructure we install and maintain.

Digester Gas to RNG — Our Role

In a digester-gas-to-RNG project, the raw biogas is scrubbed and upgraded to pipeline quality by specialized gas-upgrading systems. Our role is the containment and collection side of that chain — sealing the digester, capturing the biogas, and delivering it to the upgrading system. We provide the geomembrane covers, liners, and containment infrastructure that the rest of the RNG process depends on.

Related Pages

• Biogas collection covers — for digester and lagoon gas-collection covers, see biogas collection covers
• Wastewater lagoon liners — for digester and wastewater lagoon containment, see wastewater lagoon liners
• Agricultural liners — for manure containment on dairy and livestock operations, see agricultural liners

Why RNG Operators Choose Plastic Fusion

• 40+ years of geomembrane fabrication and installation, including biogas and digester containment
• Containment and gas collection specialists — the physical infrastructure RNG digesters run on
• Custom-fabricated covers, liners, and digester containment components
• Repair and maintenance to keep digesters sealed and producing over the long term
• Active projects across 24 states with nationwide mobilization

RNG Digester Management FAQs

What does RNG digester management involve?

As we practice it, RNG digester management is the containment and gas-collection side of running an anaerobic digester — installing and maintaining the covers, liners, and containment that seal the digester, capture its biogas, and keep methane output optimized. It’s the physical infrastructure that makes methane capture reliable, which is what the economics of an RNG project depend on.

What feedstocks do the digesters you serve run on?

We provide containment and gas collection for digesters running on dairy and livestock manure, swine waste, food waste, and wastewater biosolids. The containment and collection approach is tailored to the feedstock and the digester design.

Do you repair existing digester covers and containment?

Yes. We repair and refurbish digester covers, liners, and containment to keep the system sealed and capturing gas. Industrial digester repair and maintenance is a core part of what we do, alongside new installation.

Request a Quote

If you operate or are developing an RNG or biogas project and need digester containment, biogas collection, or repair of existing covers and liners, Plastic Fusion provides the geomembrane infrastructure your digester depends on. Contact us with your project details for a quote.