Elimination of Methylene Blue in aqueous water by ozonation process over nanofiltration membrane

Name: San, Phyo Phyo

LCSH: Kasetsart University -- Theses. M.Eng. (Sustainable Energy and Resources Engineering) 2022

Classification :.LCCS: TD758.5.C65

LCSH: Kasetsart University. -- Faculty of Engineering -- Theses

LCSH: Sewage -- Purification -- Color removal

LCSH: Sewage -- Purification -- Ozonization

LCSH: Sewage -- Purification -- Filtration

LCSH: Dyes and dyeing

LCSH: Methylene blue

Abstract: Textile industries emit contaminated wastewater (dyes) into the environment. Elimination of dye (methylene blue (MB)) in an aqueous solution over the uncoated, and coated membrane (media) with three layers, two layers of titanium dioxide (TiO2), and one layer of natural clay was investigated. TiO2 and natural clay solutions were coated on the media through the dip-coating method. In addition, the filtration performance of the clay media was assessed using cross flow filtration of Methylene blue solutions under 3 bar pressure. Total Dissolved solids (TDS) can’t remove by using uncoated and TiO2 layer coated media since the concentration of TDS after filtration was less than that of the initial but 28% of TDS can remove by one layer of clay coated media. 67% of MB color can be eliminated by two layers of TiO2 coated media, and 97% of MB can be eliminated2 coated media, as well as 97% of MB, which can eliminate by clay coated media at the maximum wavelength of 665 nm. The media permeability of uncoated media is 1843 L/m2h, two layers of TiO2 coated media is 389 L/m2h, two layers of TiO2 coated media is 223 L/m2h, and one layer of clay coated media is 1.6 L/m2h separately at TMP 3 Bar. To know the effect of ozone, pre ozonation before filtration and post ozonation after filtration was tested by using Clay coated media which was the best flux rate. Color removal percentage was tested by UV-Vis Spectrophotometer within the range of 500-800 nm.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Peerakarn Banjerdkij

Role: Thesis Advisor

Created: 2022

Modified: 2025-07-23

Issued: 2025-07-23

วิทยานิพนธ์/Thesis

application/pdf

URL: https://www.lib.ku.ac.th/KUthesis/2565/phyo-phy-all.pdf

CallNumber: TD758.5.C65 .S26

eng

DegreeName: Master of Engineering

Level: Master's Degree

Descipline: Sustainable Energy and Resources Engineering

Grantor: Kasetsart University

©copyrights Kasetsart University

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