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US 2022/0025296 A1Published application
Cleaning composition
AssigneeEcolab USA Inc.
InventorsStephan Dörries, Matthias Schmitz, Ralf Krack, Michael Schmidt
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Abstract
A composition for cleaning membranes used in food processing comprising an amine oxide and an alkyl sulfate, the composition maintaining good cleaning performance whilst leaving a low residue of surfactant on the membrane that is cleaned using the composition. A method of use of the composition is also presented.
Claims20
11:
- A method of cleaning a membrane comprising:
- applying a composition comprising at least one amine oxide and at least one alkyl sulfate to the membrane;
- and
- rinsing the membrane to remove at least a majority of the composition from the membrane.
1 more element
12:
- The method of claim 11, wherein the membrane comprises less than 50 mg/m2 of the composition after rinsing the membrane.
13:
- The method of claim 11, wherein the membrane comprises less than 20 mg/m2 of the composition after rinsing the membrane.
14:
- The method of claim 11, wherein the at least one amine oxide comprises lauryldimethylamine oxide.
15:
- The method of claim 11, wherein the at least one alkyl sulfate comprises 2-ethylhexyl sulfate.
16:
- The method of claim 11, wherein the composition comprises from 10 ppm to 1000 ppm of the at least one amine oxide.
17:
- The method of claim 11, wherein the composition comprises from 10 ppm to 500 ppm of the at least one alkyl sulfate.
18:
- The method of claim 11, wherein the composition comprises a plurality of amine oxides.
19:
- The method of claim 11, wherein the at least one amine oxide comprises lauryldimethylamine oxide, and wherein the at least one alkyl sulfate comprises 2-ethylhexyl sulfate.
20:
- The method of claim 11, wherein the membrane is used to process a food product or a beverage.
21:
- The method of claim 20, wherein the membrane is used to process a dairy product, a fruit juice, or an alcoholic beverage.
22:
- The method of claim 11, wherein the membrane is a polymeric membrane.
23:
- The method of claim 22, wherein the membrane comprises polyamide, polyether sulfone, polysulfone, polyvinyldifluoride, polypropylene, or polyacrylnitrile.
24:
- The method of claim 11, wherein the membrane is a ceramic membrane.
25:
- The method of claim 11, wherein the membrane comprises a polymeric backing layer.
26:
- The method of claim 11, wherein the composition has a pH of more than 8.
27:
- The method of claim 11, wherein the composition has a pH of less than pH 5.
28:
- The method of claim 11, wherein the composition further comprises an enzyme.
29:
- The method of claim 11, wherein the composition further comprises a stabilizer.
30:
- A method of cleaning a membrane comprising:
- diluting a concentrated composition comprising at least one amine oxide and at least one alkyl sulfate;
- applying the diluted composition to the membrane;
- and
- rinsing the membrane to remove at least a majority of the composition from the membrane.
2 more elements