Aqueous citric acid as a promising cleaning agent of whey evaporators

Martina Vavrusova Hedegaard; Nikolaj  P. Johansen; André Castilho Garcia; Leif Horsfelt Skibsted

doi:10.1016/j.idairyj.2017.02.002

Aqueous citric acid as a promising cleaning agent of whey evaporators

Martina Vavrusova Hedegaard, Nikolaj P. Johansen, André Castilho Garcia, Leif Horsfelt Skibsted

4 Citations (Scopus)

Abstract

Scale in evaporators for lactose production was identified as mainly calcium citrate tetrahydrate with phosphate contaminations. Dissolution of 3.00 g of scale in aqueous solutions of 0.100, 0.500, and 1.00 mol L−1 citric acid with final volumes of 100, 50, and 25 mL was investigated. The highest concentration of citric acid was the most effective for all the investigated volumes. From the citric acid solutions, spontaneously supersaturated in calcium citrate tetrahydrate during scale dissolution in the smaller volumes for all citric acid concentrations, calcium citrate tetrahydrate slowly precipitated in acceptable purity for technical use. Dissolution efficiency of aqueous solutions of 0.200 mol L−1 nitric acid combined with 0.100, 0.500, and 1.00 mol L−1 citric acid with final volumes of 100, 50, and 25 mL showed synergistic effect especially for the higher concentrations and lower volumes of two acids

Original language	English
Journal	International Dairy Journal
Volume	69
Pages (from-to)	45-50
Number of pages	6
ISSN	0958-6946
DOIs	https://doi.org/10.1016/j.idairyj.2017.02.002
Publication status	Published - 1 Jun 2017

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10.1016/j.idairyj.2017.02.002

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title = "Aqueous citric acid as a promising cleaning agent of whey evaporators",

abstract = "Scale in evaporators for lactose production was identified as mainly calcium citrate tetrahydrate with phosphate contaminations. Dissolution of 3.00 g of scale in aqueous solutions of 0.100, 0.500, and 1.00 mol L−1 citric acid with final volumes of 100, 50, and 25 mL was investigated. The highest concentration of citric acid was the most effective for all the investigated volumes. From the citric acid solutions, spontaneously supersaturated in calcium citrate tetrahydrate during scale dissolution in the smaller volumes for all citric acid concentrations, calcium citrate tetrahydrate slowly precipitated in acceptable purity for technical use. Dissolution efficiency of aqueous solutions of 0.200 mol L−1 nitric acid combined with 0.100, 0.500, and 1.00 mol L−1 citric acid with final volumes of 100, 50, and 25 mL showed synergistic effect especially for the higher concentrations and lower volumes of two acids",

author = "Hedegaard, {Martina Vavrusova} and {P. Johansen}, Nikolaj and Garcia, {Andr{\'e} Castilho} and Skibsted, {Leif Horsfelt}",

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T1 - Aqueous citric acid as a promising cleaning agent of whey evaporators

AU - Hedegaard, Martina Vavrusova

AU - P. Johansen, Nikolaj

AU - Garcia, André Castilho

AU - Skibsted, Leif Horsfelt

PY - 2017/6/1

Y1 - 2017/6/1

N2 - Scale in evaporators for lactose production was identified as mainly calcium citrate tetrahydrate with phosphate contaminations. Dissolution of 3.00 g of scale in aqueous solutions of 0.100, 0.500, and 1.00 mol L−1 citric acid with final volumes of 100, 50, and 25 mL was investigated. The highest concentration of citric acid was the most effective for all the investigated volumes. From the citric acid solutions, spontaneously supersaturated in calcium citrate tetrahydrate during scale dissolution in the smaller volumes for all citric acid concentrations, calcium citrate tetrahydrate slowly precipitated in acceptable purity for technical use. Dissolution efficiency of aqueous solutions of 0.200 mol L−1 nitric acid combined with 0.100, 0.500, and 1.00 mol L−1 citric acid with final volumes of 100, 50, and 25 mL showed synergistic effect especially for the higher concentrations and lower volumes of two acids

AB - Scale in evaporators for lactose production was identified as mainly calcium citrate tetrahydrate with phosphate contaminations. Dissolution of 3.00 g of scale in aqueous solutions of 0.100, 0.500, and 1.00 mol L−1 citric acid with final volumes of 100, 50, and 25 mL was investigated. The highest concentration of citric acid was the most effective for all the investigated volumes. From the citric acid solutions, spontaneously supersaturated in calcium citrate tetrahydrate during scale dissolution in the smaller volumes for all citric acid concentrations, calcium citrate tetrahydrate slowly precipitated in acceptable purity for technical use. Dissolution efficiency of aqueous solutions of 0.200 mol L−1 nitric acid combined with 0.100, 0.500, and 1.00 mol L−1 citric acid with final volumes of 100, 50, and 25 mL showed synergistic effect especially for the higher concentrations and lower volumes of two acids

U2 - 10.1016/j.idairyj.2017.02.002

DO - 10.1016/j.idairyj.2017.02.002

M3 - Journal article

SN - 0958-6946

VL - 69

SP - 45

EP - 50

JO - International Dairy Journal

JF - International Dairy Journal

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