Issue |
E3S Web Conf.
Volume 503, 2024
The 9th International Symposium on Applied Chemistry in conjuction with the 5th International Conference on Chemical and Material Engineering (ISAC-ICCME 2023)
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Article Number | 04006 | |
Number of page(s) | 8 | |
Section | Design Process and Chemical Engineering | |
DOI | https://doi.org/10.1051/e3sconf/202450304006 | |
Published online | 20 March 2024 |
Methylene blue removal via photocatalysis by continuous tubular photoreactor with TiO2
1 Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro Jl. Prof Soedarto, SH Tembalang, Semarang, Central Java, 50275, Indonesia
2 SDGs Center, Universitas Diponegoro, Tembalang, Semarang, Indonesia
3 Department of Chemical and Materials Engineering, the University of Auckland, Auckland, New Zealand
* Corresponding author: dessy.ariyanti@che.undip.ac.id
The Indonesian batik industry has dominated the global market with an export value in 2022 of around US$ 25.31 million or Rp 392.74 billion. Environmental implications are also substantial, as 10–20% of the total dye products utilized in batik dyeing are typically lost in effluent and discharged into bodies of water. Photocatalysis with TiO2 has been widely studied as a method that can be applied to wastewater treatment because it has high photoreactive properties and chemical stability compared to other materials. A tubular photoreactor system with continuous flow for processing dye waste in the batik industry has been successfully developed. This equipment consists of five reactors arranged in parallel connected by a 1/2-inch pipe and equipped with a circulation pump, flowmeter, feed tank, panel box, and flow valve. This system is used for the photocatalysis process with a TiO2 catalyst dose of 1.5 gr/l with flow rate variation. The results show that the color of the solution changed and the results of measurements using UV-VIS showed that the concentration of methylene blue decreased from 4.871 ppm to 0.081 ppm with the flow rate of 3 L/min. The kinetic constant for this variable is 0.01762/min with R2 = 0.98675.
© The Authors, published by EDP Sciences, 2024
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