Highly efficient decomposition of Remazol Brilliant Blue R using tubular reactor coated with thin layer of PdO.
In this work, we propose a novel approach to dye decomposition under subcritical water conditions using a continuous-flow tubular reactor coated with thin layer of PdO as a catalyst. Remazole Brilliant Blue R was used as an example of synthetic dyes. Hydrogen peroxide was used as an environmental-friendly oxidant as it leaves no residues after treatment. The effect of temperature, pressure and dye concentration on total organic carbon (TOC) removal were studied. 99.9% of TOC removal was achieved at 300 °C and 10 MPa pressure within a short residence time of 3.2 s. This method provided an efficient and rapid process that has a potential for treating a wide range of textile wastewaters.
Renewable Energy Research Center, Fukushima Renewable Energy Institute, National Institute of Advanced Industrial Science and Technology, AIST, 2-2-9 Machiikedai, Koriyama, Fukushima 963-0298, Japan; Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology, AIST, 4-2-1 Nigatake, Miyagino-ku, Sendai, Miyagi 983-8551, Japan. Electronic address: rahat.javaid@aist.go.jp.
Rahat
R
Javaid
Renewable Energy Research Center, Fukushima Renewable Energy Institute, National Institute of Advanced Industrial Science and Technology, AIST, 2-2-9 Machiikedai, Koriyama, Fukushima 963-0298, Japan.
Umair Yaqub
UY
Qazi
Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology, AIST, 4-2-1 Nigatake, Miyagino-ku, Sendai, Miyagi 983-8551, Japan.
Shin-Ichiro
S
Kawasaki
D000880:Anthraquinones / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D016877:Oxidants / Q000737:chemistry; D011312:Pressure; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000737:chemistry*
D000880:Anthraquinones; D004396:Coloring Agents; D016877:Oxidants; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; C024758:Remazol Brilliant Blue R
Dye decomposition; Hydrogen peroxide; Microreactor; Palladium oxide; Subcritical water