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Brewer’s Spent Grain

Brewer's Spent Grain Icon

Impact Flash-Drying Brewer’s Spent Grain To Limit Food Waste

Brewer’s Spent Grain, a byproduct of the brewing process, often poses significant challenges for breweries. This valuable resource can be difficult to manage due to its high moisture content and potential for spoilage. We offer a sustainable and profitable solution to transform this byproduct into a valuable asset.

Sustainability Challenges of Brewer's Spent Grain

Sustainability Challenges of Brewer’s Spent Grain

High moisture content is one of the primary challenges associated with Brewer’s Spent Grain.

Traditional drying methods, such as freeze and heat drying, are often inefficient and energy-intensive, making it challenging to preserve the nutritional value and ensure long-term storage. Additionally, disposing of Brewer’s Spent Grain can have environmental implications.

Our Impact Flash-Drying Technology

Our Sustainable & Profitable Solution for Brewer’s Spent Grain

GTF’s RENU™ Drying & Milling System offers a sustainable and efficient solution for drying spent grain.

This advanced impact flash-drying technology utilizes moderate to low temperature, high-velocity air to rapidly micronize the grain, preserving its nutritional value and preventing spoilage.

The GTF Advantage


Our RENU™ system provides several advantages for brewers:

  • Sustainability: The RENU™ system helps minimize the environmental impact of Brewer’s Spent Grain by reducing the need for landfill disposal.

  • Efficiency: The impact flash-drying process is highly efficient, consuming significantly less energy than traditional drying methods.

  • Profitability: Dried Brewer’s Spent Grain can be repurposed as a valuable protein-rich flour for human consumption or sustainable packaging material for industrial applications.

Other Key Benefits of the RENU™ System Include:

Significantly reduces drying times and improves overall production efficiency.


Minimizes energy consumption, reduces operational costs, and improves environmental impact.


A compact footprint requires less space, allowing for efficient use of space and reducing overhead costs.


Versatility, processing a wide range of ingredients, providing flexibility, and expanding product options.


Improved product quality, preserving ingredients' nutritional value and sensory properties, ensuring high-quality products.

In-Market Implementation: How We Make Brewer’s Spent Grain Sustainable


The RENU™ system is designed to meet the specific needs of the brewing industry. Our team of experts works closely with breweries to develop customized solutions that optimize drying efficiency and maximize product quality. By incorporating the RENU™ system into their operations, breweries can:

  • Reduce waste: Minimize the amount of Brewer’s Spent Grain sent to landfills.

  • Increase revenue: Generate additional income by selling as a valuable food ingredient or as a bioplastic, compostable, or biodegradable packaging material.

  • Improve sustainability: Contribute to a more environmentally friendly brewing process.

This case study shows how this GTF customer used RENU™ technology to dry and mill their brewer’s spent grain to stabilize a waste stream and achieve a triple bottom line.

Why Does Profitable Sustainability Matter for Side Streams & Byproducts?

Sustainable practices are becoming increasingly important in the brewing industry. By utilizing side streams like Brewer’s Spent Grain, breweries can reduce their environmental footprint and enhance their profitability. GTF’s RENU™ system offers a sustainable and efficient solution for drying Brewer’s Spent Grain, helping breweries achieve their sustainability goals while maximizing their bottom line.

GTF Technologies Sustainable and Custom Solutions

Find Sustainable & Custom Solutions with GTF Technologies

If you're looking for a sustainable and profitable way to manage Brewer’s Spent Grain, GTF can help. Our team of experts can provide customized solutions tailored to your specific needs.