Degradation of methylene blue using bubbles treatment

Joni, I Made; Azhary, Sundoro Yoga; Ridha, M.; Sulistio, Eko; Pratopo, Lukito Hasta; Hermawan, Wawan; Miranti, Mia; Panatarani, Camellia

doi:10.1063/5.0003081

Cited by 1 publication

(1 citation statement)

References 11 publications

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“…Furthermore, NB-enriched water has unique physicochemical properties compared to water without NBs [15]. Nanobubbles present high mass transfer efficiency and oxidation ability because of the increased gas-liquid contact area and the generation of hydroxyl radicals when collapsing [16][17][18]. Well-known properties of fine bubbles include the following: extremely slow rise velocity, large surface area, fine bubbles (micro/nanobubbles) are electrostatically charged, surface adsorption, acoustic properties (sono-chemistry), radical formation induced by bubble collapse, and long life of nanobubbles.…”

Section: Introductionmentioning

confidence: 99%

Hydroxyl Radical-Based Advanced Oxidation Processes of Red Reactive Dyes by Ultrafine Bubbles Method

Sofia,

Hanam,

Sunardi

et al. 2024

Water

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The breakdown of dyes, which are environmentally hazardous substances and notoriously difficult to degrade, presents the main treatment challenge for wastewater from textile industries. Most advanced oxidation processes (AOPs) for dye degradation usually use costly decolorizing agents, whose residue from Wastewater Treatment Plants may be hazardous to the environment. The present study aimed to apply ultrafine bubbles (UFBs) for water AOPs to degrade textile dyes. Our most recent innovation, ultrafine bubbles, enables the production of reactive oxygen species recently introduced as oxidants in AOPs. First, the disc diffuser was optimized by introducing various flow rates of 1–5 L Per Minute (LPM) to generate UFBs with unique characteristics observed from Zeta Potential, pH, Dissolved Oxygen (DO), and Oxidation–Reduction Potential (ORP). The air UFBs using a disc diffuser with 3 LPM were selected to degrade the Navacron Ruby S-3B dye solution (1000 Pt-Co). The treatment was optimized on the coagulant dosage (0.25, 0.5, 0.75, and 1 ppm) and bubbling times (0–120 min). As a result, the UFBs were successful in degrading the Navacron Ruby S-3B dye solution, resulting in a 45% reduction in Pt-Co color scale with a bubbling time of only 120 min and minimal coagulant dosage (0.5 ppm) compared to the Navacron Ruby S-3B dye solution treatment commonly using a coagulant dosage of 1.5 ppm without UFBs. Based on FTIR, XRF, and PL analysis, we propose the AOP mechanism of hydroxyl radicals for the Navacron Ruby S-3B dye solution. It is emphasized that UFB water AOPs (UFBs–WAOPs) represent a promising alternative technology for treating textile wastewater without chemicals or decolorizing agents. Thus, the UFBs-WAOPs are economical and environmentally benign textile wastewater treatment methods.

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