Case Study

JBS Grand Island — O2 Injection for Slaughterhouse Biogas

Dual O2 injection system for covered lagoon digesters at one of the largest beef processing facilities in the US, enabling RNG-quality biogas production.

6,500 ppm

Design H2S Max

<2,000 ppm

Guaranteed Post-Treatment

23.2 SCFM O2

System Capacity

Client

JBS USA / GreenGas

Location

Grand Island, NE

Completed

2025

Industry

Slaughterhouse / Food Processing

System Type

Dual PSA O2 Injection System

The Challenge

Problem

JBS Grand Island's slaughterhouse wastewater digesters produced biogas with H2S concentrations up to 6,500 ppm — far too high for the GreenGas RNG upgrader downstream. Chemical scrubbing alternatives were prohibitively expensive at this scale, and air injection would dilute the methane with nitrogen, degrading RNG yield.

Our Approach

Solution

EFI designed a dual PSA oxygen injection system with 23.2 SCFM total capacity for two covered lagoon digesters. Pure O2 injection promotes sulfur-oxidizing bacteria that convert H2S to elemental sulfur without diluting methane with nitrogen. EFI provided a white paper by Dr. Hector Cumba supporting the NDEE air permit application, plus a performance guarantee.

O2 Injection System DesignPSA Oxygen GeneratorPerformance GuaranteeRegulatory SupportWhite Paper Documentation

Outcomes

Results & Metrics

6,500 ppm

Design H2S Max

<2,000 ppm

Guaranteed Post-Treatment

23.2 SCFM O2

System Capacity

Covered Lagoon (x2)

Digester Type

RNG Production

End Use

>50%

Sulfur Reduction

Key Outcomes

Guaranteed H2S reduction from 6,500 ppm to under 2,000 ppm post-treatment
Greater than 50% total sulfur compound reduction guaranteed
No nitrogen dilution of biogas — preserves RNG methane content
NDEE construction air permit secured with EFI white paper documentation
Performance guarantee issued for H2S reduction targets

“EFI's O2 injection system and white paper documentation were critical to securing our air permit and enabling the RNG upgrade path.”

Project Engineer, JBS USA / GreenGas

Related Work

Similar Projects

Poultry / Food Processing

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Results & Metrics

6,500 ppm

Design H2S Max

<2,000 ppm

Guaranteed Post-Treatment

23.2 SCFM O2

System Capacity

Covered Lagoon (x2)

Digester Type

RNG Production

End Use

>50%

Sulfur Reduction

Key Outcomes

Guaranteed H2S reduction from 6,500 ppm to under 2,000 ppm post-treatment
Greater than 50% total sulfur compound reduction guaranteed
No nitrogen dilution of biogas — preserves RNG methane content
NDEE construction air permit secured with EFI white paper documentation
Performance guarantee issued for H2S reduction targets

JBS Grand Island — O2 Injection for Slaughterhouse Biogas

Problem

Solution

Results & Metrics

Key Outcomes

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JBS Grand Island — O2 Injection for Slaughterhouse Biogas

Problem

Solution

Results & Metrics

Key Outcomes

Similar Projects

Perdue Farms — Lewiston, NC

SunMaid Growers — Kingsburg, CA

JBS — Worthington, MN

Have a Similar Project?