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ARS Home » Southeast Area » Florence, South Carolina » Coastal Plain Soil, Water and Plant Conservation Research » Research » Publications at this Location » Publication #361633

Research Project: Improvement of Soil Management Practices and Manure Treatment/Handling Systems of the Southern Coastal Plain

Location: Coastal Plain Soil, Water and Plant Conservation Research

Title: Extraction of phosphorus and amino acids from manure and algae

item Vanotti, Matias

Submitted to: Meeting Abstract
Publication Type: Proceedings
Publication Acceptance Date: 2/28/2019
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: A new method for simultaneous extraction of amino acids and phosphorus from biological materials has been developed and is presented. The experiments used swine manure solids fraction after solids-liquid separation. The simultaneous extraction produced two streams: a phosphorus charged stream and a protein charged stream. The proteins were further concentrated with ultrafiltration (UF) and flocculation. On a dry-weight basis, it was found that the separated manure solids contained 15.2-17.4 percent (%) proteins and 3.0% phosphorus. Quantitative extraction of phosphorus and proteins from manures was possible with this new system. The recovered phosphorus solids had 20.4% phosphates. UF of 5 and 10 Kilodalton (kDa) captured all the proteins. The protein solids were converted into amino-acids using acid hydrolysis. Further, the system was proved effective to extract phosphorus and proteins from other biological materials, such as algae or crops. The recovered proteins could be used for production of amino acids and the recovered phosphorus could be used as a recycled material that replaces commercial phosphate fertilizers. The simultaneous extraction of amino acids and phosphorus could be a potential new revenue stream from wastes.