Premium
Potato starch factory waste effluents. II. Development of a process for recovery of amino acids, protein and potassium
Author(s) -
Heisler E. G.,
Siciliano J.,
Krulick S.
Publication year - 1972
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740230609
Subject(s) - chemistry , amino acid , asparagine , effluent , starch , histidine , lysine , potassium , food science , ammonium , biochemistry , organic chemistry , waste management , engineering
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.o.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.o.d. is decreased approximately 60%.