Performance of Advanced Oxidization UV/S<sub>2</sub>O<sub>8</sub><sup>-2</sup> in Removing Acid Green 3 from Aqueous Solutions: Modeling Based Linear Regression, Kinetic Studies
| Author | Reza Shokoohi | en |
| Author | Mehdi Salari | en |
| Author | Abolfazl Arabkoohsar | en |
| Author | Abdollah Dargahi | en |
| Author | Hossein Faraji | en |
| Author | Mohammad Molla Mahmoudi | en |
| Author | Roholla Torkashvand | en |
| Orcid | Mehdi Salari [0000-0003-0391-0758] | en |
| Orcid | Abdollah Dargahi [0000-0003-2929-2556] | en |
| Issued Date | 2018-09-30 | en |
| Abstract | Background: Used in the dyeing industry, Acid Green 3 has a complicated molecular structure and a low level of biodegradability. The present study investigated the removal of Acid Green 3 from synthetic solutions by UV/S2O8-2. Methods: This cross-sectional study was conducted at the laboratory scale. The effect of time (5 - 60 min), pH (3 - 11), Acid Green 3 concentration (50 - 150 mg/L), and dose of S2O8 (10 - 50 mg/L) was studied under the UV radiation with 510 mJ/cm2 intensity and 636 nm wavelength. Spectrophotometer (wavelength of 636 nm) was used to measure remaining concentration of Acid Green 3 after each experiment. Linear regression was used to create an appropriate linear model. Results: Results showed a removal percentage of 95% was achieved under the optimal conditions of the studied variables: pH = 3, Acid Green 3 = 50 mg/L, S2O8-2 = 50 mg/L and time = 60 min. The kinetics of UV/S2O8-2 process for all the investigated variables followed the pseudo-first-order kinetic model. In addition, the removal efficiency of COD for Acid Green concentrations of 50, 100, and 150 mg/L were about 78%, 53%, and 41%, respectively. Linear regression analysis yielded a model with R2 = 0.852 and adjusted R2 = 0.792. Conclusions: In the current study, the variables of Acid Green 3, S2O8-2, contact time, and pH were effective on the process efficiency. Regarding the high efficiency of UV/S2O8-2, this process could be employed for the removal of Acid Green 3 and similar compounds from industrial effluents. | en |
| DOI | https://doi.org/10.5812/jkums.74139 | en |
| URI | https://brieflands.com/journals/jkums/articles/74139 | en |
| Keyword | Advanced Oxidation | en |
| Keyword | Acid Green 3 | en |
| Keyword | Wastewater Treatment | en |
| Keyword | UV/S<sub>2</sub>O<sub>8</sub> | en |
| Publisher | Brieflands | en |
| Title | Performance of Advanced Oxidization UV/S<sub>2</sub>O<sub>8</sub><sup>-2</sup> in Removing Acid Green 3 from Aqueous Solutions: Modeling Based Linear Regression, Kinetic Studies | en |
| Type | Research Article | en |
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