The Animal Co-Products Research & Education Center (ACREC) is a joint project with Clemson University and FPRF with the mission to:

Ensure microbial safety of rendered products for animal feeds and consumer protection.
Promote environmentally sound practices.
Develop new market opportunities for the worldwide rendering industry.
Provide educational opportunities in animal co-product utilization.

Projects funded through ACREC represent wide diversity in different fields and areas of novel and innovative research.

Contact ACREC

Animal Co-Products Research and Education Center (ACREC)
247 Poole Agricultural Center
Clemson University
Clemson, SC 29634-0328

Annel K. Greene, Ph.D., Center Director,

(864) 656-3123 Office
(864) 656-3131 FAX

Renderable Flocculants for Wastewater Treatment

Every rendering plant has a water treatment system for purification of a wide range of wastewater from rendering, poultry, meat, and food processing, to recover proteins and fats to produce high-quality fats and protein meals, and meet eluent standards.

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Reactive Conversion of Oils Extracted from DAF Sludge with Supercritical Methanol

The goal of this research is to investigate the conversion of lipids present in animal waste streams into fatty-acid methyl esters using supercritical methanol. If successful, this research could redirect waste streams into valuable products that include bio-based fuels, lubricants, release agents, and other nonrenewable petroleum products.

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Modified Natural Materials for Rendering Applications

This project continued our prolonged efforts toward the development of new functional materials for technologies to reduce odor emissions from the rendering industry. In the beginning of our work with FPRF, the main target of this work was to develop engineered, biodegradable poly(lactic acid) (i.e. PLA) nanomaterials whose surface could be decorated with appropriate reactive sites (i.e. functional groups) that would, in turn, capture or destroy malodorous volatile organic byproducts of rendering processes.

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Livestock Feed Preservatives Based on Antioxidant Enzymes Extracted from Animal Blood

Autooxidation of unsaturated fats is one of the primary mechanisms of quality deterioration in animal feeds and pet food. These alterations in quality are manifested through adverse changes in flavor, color, texture, and nutritive value and there is some concern that toxic compounds are produced during the deterioration process.

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Field Evaluation of Membrane Separations in Rendering Facility Wastewater Treatment

This project was an effort to decrease costs for wastewater treatment at rendering plants. One of the most widely used processes in the rendering wastewater treatment train is dissolved air floatation (DAF). DAF requires a large dose of various chemicals and significant operator time to make it work well. We are investigating whether membrane filtration may be a cheaper alternative.

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