Micellar enhanced ultrafiltration of coconut water using a zwitterionic surfactant

Date

9-1995

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Ernesto J Del Rosario

Abstract

RAGRAGIO, ANNA CRISTETA OBUSAN, College of Arts and Sciences, University of the Philippines at Los Banos. Micellar-Enhanced Ultrafiltration of Coconut Water using a Zwitterionic Surfactant

Adviser: Dr. Ernesto J. del Rosario

Polysulfone membranes with a mass ratio of PSF: DMAc 18:82 plus polyvinyl pyrrolidone were prepared. The membranes were characterized in terms of thickness, water flux, molecular weight cut-off, pore size and pore density. The mean thickness of the membranes was 0.114 ± 0.014 mm and the mean water flux obtained was (1.4 ± 0.4) 102 l-m2-h4. The rejection coefficient for bovine serum albumin was (84.0 ± 13.0) % and for chymotrypsinogen was (81.0 ± 12.0) %. The characterized membrane were used to concentrate the sugars in coconut water using a zwitterionic surfactant (betaine).

Ultrafiltration of the two standard proteins shows that higher protein molecular weights gave higher rejection coefficients. The molecular weight cut-off of the membranes was inconclusive because the values for the two proteins are not significantly different. A decline in water flux after membrane filtration was also noted due to membrane fouling.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1995 C4 R34

Document Type

Thesis

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