Potato starch factory waste effluents. II. Development of a process for recovery of amino acids, protein and potassium

Abstract

Problems associated with the secondary waste effluents from potato starch factories and the basic studies leading to a proposed ion-exchange process for the treatment of such wastes to decrease the biochemical oxygen demand (b.0.d.) by removal of protein and amino acids are discussed. The variables studied and the data needed for design of a process are reported.Five products are obtained: (i) a basic amino-acid mixture containing approximately 30% arginine, 8% lysine and 6 % histidine; (ii) an acidic and neutral amino compound mixture containing approximately 30 % asparagine ; (iii) potato protein; (iv) a fertiliser product having an n.p.k. of 12-0-22; and (v) a liquid fertiliser containing 8 % ammonium sulphate.By the removal of these constituents the b.0.d. is decreased approximately 60 %.

Physical-chemical methods for the recovery of protein from waste effluent of potato chip processing

“…Xander and Hoover (1959) precipitated proteins from potato juice by heat coagulation and recovered amino acids and amides with a strongly basic anion exchanger. Using ion exchange, Heisler et al (1972) investigated the recovery of amino acids, proteins, and potassium and Schwartz et al (1972) studied the Department of Crop and Soil Sciences, Michigan State University, East Lansing, Michigan 48824. recovery of organic acids and phosphate. However, Stabile et al (1971) found that protein recovery followed by removal of other constituents using ion exchange is not economically feasible.…”

Ultrafiltration and Reverse Osmosis of the Waste Water from Sweet Potato Starch Process

“…Recovery of potato solubles from potato starch production waste water has been studied extensively (Heisler et al, 1959(Heisler et al, , 1962(Heisler et al, , 1972Schwartz et al, 1972;Strolle et al, 1973Strolle et al, , 1980. Reverse osmosis was also investigated for processing potato starch waste effluents Rosenau et al, 1978).…”

Potato Protein Concentrates: The Influence of Various Methods of Recovery Upon Yield, Compositional and Functional Characteristics

“…Ion exchange chromatography has been used to recover protein, amino acids and potassium from potato waste streams (Heisler et al 1972), and Porter et al (1970) studied the use of reverse osmosis for potato protein recovery.…”