SEPARATION OF UREA

PROBLEM TO BE SOLVED: To provide a method for simply separating urea from a solution containing urea such as a natural substance or wastewater utilizing a technique of membrane separation. SOLUTION: A solution containing urea is treated with a nanofiltration(NF) membrane or a reverse osmosis(RO) mem...

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Bibliographic Details
Main Authors KOTANI MASAKI, SERIZAWA ATSUSHI, MOCHIJI WATARU, YAMAMOTO HARUTAKA, MORITA MINORU
Format Patent
LanguageEnglish
Published 10.10.2000
Edition7
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
DAIRY PRODUCTS, e.g. MILK, BUTTER, CHEESE
FOODS OR FOODSTUFFS
HUMAN NECESSITIES
MAKING THEREOF
METALLURGY
MILK OR CHEESE SUBSTITUTES
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To provide a method for simply separating urea from a solution containing urea such as a natural substance or wastewater utilizing a technique of membrane separation. SOLUTION: A solution containing urea is treated with a nanofiltration(NF) membrane or a reverse osmosis(RO) membrane to permeate the urea to the side of the resultant permeate to thereby separate the urea.
Bibliography:Application Number: JP19990082721