Decolorization of wastewater of a baker's yeast plant by membrane processes

The aim of this study is to develop a membrane-based treatment scheme to remove colorants from the effluent of a baker's yeast plant. For this purpose microfiltration (MF), ultrafiltration (UF) and nanofiltraton (NF) membranes with differing molecular weight cut-offs (MWCOs) were tested. To eva...

Full description

Saved in:
Bibliographic Details
Published in:Water research (Oxford) 2002-02, Vol.36 (3), p.609-616
Main Authors: Mutlu, S.H, Yetis, U, Gurkan, T, Yilmaz, L
Format: Article
Language:English
Subjects:
Applied sciences
Baker's yeast wastewater
Decolorization
Exact sciences and technology
Filtration
Food Coloring Agents - chemistry
Industrial Waste
Industrial wastewaters
Membrane processes
Membranes, Artificial
Nanofiltration
Optics and Photonics
Pollution
Saccharomyces cerevisiae
Ultrafiltration
Wastewaters
Water Pollution - prevention & control
Water Purification - methods
Water treatment and pollution
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The aim of this study is to develop a membrane-based treatment scheme to remove colorants from the effluent of a baker's yeast plant. For this purpose microfiltration (MF), ultrafiltration (UF) and nanofiltraton (NF) membranes with differing molecular weight cut-offs (MWCOs) were tested. To evaluate the effectiveness of membrane processes in treating the waste stream, optical density (OD), COD, color measurements together with permeation fluxes were used. Effects of pretreatment methods (coagulation and coarse filtration) and feed composition on OD, color, COD were studied. In addition, gel filtration analysis was employed to characterize feed and permeate streams in terms of MW distribution of organics that are present. Maximum rejections obtained were 94%, 89% and 72% for OD, color and COD, respectively, when 0.8 μm microfiltration membrane and 400 Da NF membrane were used in series. It was also observed that addition of intermediate UF steps did not increase overall rejections and final permeate flux of NF membrane. Based on these observations, an efficient scheme was offered.
ISSN:0043-1354
1879-2448
DOI:10.1016/S0043-1354(01)00252-4