Journal Article

·2016 OPEN ACCESS

Comparison of treatment efficiency and molecular weight distribution of membrane concentrate from textile wastewater

Bestami Özkaya YTU , B Turkay YTU , Hasan Genç YTU , F Amaral , M Kato , L Florncio , S Gavazza , A Baban , A Yediler , D Lienert ,

Global NEST Journal

Abstract

<div> <p>This study investigated the treatability and changes in molecular weight distributions (MWD) of membrane concentrate. Nanofiltration (NF) concentrate from textile wastewater was subjected sole anaerobic treatment (R1) and pre-ozonation (R2) plus anaerobic treatment. BOD<sub>5</sub>, COD and TOC, color, sulphate and specific ultraviolet absorbtion at 254 nm (SUVA<sub>254</sub>) were analysed. Pre-ozonation improved the biodegradability of the membrane concentrate. The low molecular weight (LMW) organics was an important reason for the overall biodegradability enhancement of the membrane concentrate. Color was caused mainly by matters with higher than MWD of 10 kDa and 80% of HMW organics were removed during anaerobic treatment. Nearly half of sulfate was lower than 0.5 kDa which indicates that sulfate hardly treated by NF membranes. SUVA<sub>254</sub> values after anaerobic treatment were generally higher than 2 l mg<sup>-1</sup>m<sup>-1</sup> which indicates that membrane concentrate was in hydrophobic characteristics. </p> </div> <p> </p>

Keywords

Chemistry Biodegradation Membrane Nanofiltration Sulfate Anaerobic exercise Wastewater Nuclear chemistry Water treatment Chromatography Environmental engineering Biochemistry Organic chemistry Biology

Subject Areas

Blockchain Technology Applications and Security ·Information Systems ·Physical Sciences
Microplastics and Plastic Pollution ·Pollution ·Physical Sciences
Advanced Nanomaterials in Catalysis ·Materials Chemistry ·Physical Sciences

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