Dataset on the decolorization of Naphthol Green B using a UV/sulfite system: Optimization by response surface methodology
Juan Miguel E. Caguiat,
Eldric Roland U. Tiu,
Adrian D. Go,
Francis M. dela Rosa,
Eric R. Punzalan
Affiliations
Juan Miguel E. Caguiat
Department of Chemistry, College of Science, De La Salle University, 2401 Taft Ave, Malate, Manila 1004, Metro Manila, Philippines
Eldric Roland U. Tiu
Department of Chemistry, College of Science, De La Salle University, 2401 Taft Ave, Malate, Manila 1004, Metro Manila, Philippines
Adrian D. Go
Department of Chemistry, College of Science, De La Salle University, 2401 Taft Ave, Malate, Manila 1004, Metro Manila, Philippines; Department of Chemistry, College of Science, Adamson University, 900 San Marcelino St, Ermita, Manila 1000, Metro Manila, Philippines; Corresponding author at: Department of Chemistry, College of Science, De La Salle University, 2401 Taft Ave, Malate, Manila 1004, Metro Manila, Philippines.
Francis M. dela Rosa
Department of Chemistry, College of Science, De La Salle University, 2401 Taft Ave, Malate, Manila 1004, Metro Manila, Philippines; Corresponding author.
Eric R. Punzalan
Department of Chemistry, College of Science, De La Salle University, 2401 Taft Ave, Malate, Manila 1004, Metro Manila, Philippines
Naphthol Green B (NGB) is a synthetic azo dye widely used in various industries, including textiles and leathers. NGB poses significant environmental and ecological concerns when released into natural water systems. This paper investigates the decolorization of NGB using UV/sulfite system. The % decolorization of NGB was optimized using 32 Full Factorial Design (FFD), and the ANOVA results show that the model has a good fit for the data (R2 = 99.54 %, R2(adj) = 98.76 %) and the significant factors contributing to the % decolorization are A, B, A2, and B2 where A = mM sulfite and B = pH. The model predicted ≥100 % decolorization with the optimum conditions 12 mM sulfite and pH 10. An actual experiment was conducted to verify the response, resulting in 96.2 % decolorization which is in good agreement with the model.
