Performance comparison of Fenton process, ferric coagulation and H2O2/pyridine/Cu(II) system for decolorization of Remazol Turquoise Blue G-133

Color, TOC and AOX removals from pulp mill effluent by advanced oxidation processes: A comparative study

“…Both percent TOC and color removals were maximum at Fe(II) concentration of 2.5 mM and decreased with increasing Fe(II) at higher concentrations. At high Fe(II) concentrations such as 10 mM, the initial hydroxyl radicals were probably originated from the decomposition of H 2 O 2 , which were consumed by the side reactions yielding low TOC removals from the wastewater [13,14]. Fig.…”

“…Percent TOC removals varied between 85% and 89% depending on Fe(II) concentrations with a maximum at 5 mM Fe(II) concentration. However, percent color removal decreased from 83% to 73% when Fe(II) concentration increased from 2.5 to 10 mM due to inhibition effect of iron [13,14]. Therefore, an initial ferrous concentration of 2.5 mM was selected as the most suitable Fe(II) concentration yielding 83% color and 87% TOC removal and used in further experiments.…”

“…In order to meet increasingly stringent discharge limits, pulp mills are forced to adopt technologically advanced treatment systems. Organic compounds such as chlorophenols are not fully degraded by biological processes which require advanced oxidation after biological treatment to reduce refractory organics and color of the pulp mill wastewater [4,5,[7][8][9][10][13][14][15][16][17][18][19].…”

Comparing Fenton Oxidation with Conventional Coagulation Process for RR198 Dye Removal from Aqueous Solutions

“…Therefore, the optimal concentration of Poly Aluminum Chloride was considered to be 70 mg/l to Iran J Health Sci 2017; 5(4): 35 remove the dye. In their study, Bali et al demonstrated that the effectiveness of decolorization at the concentration of 20 to 100 mg/l increased as the amount of coagulant increased, and then no change was observed (26). As it was observed, through an increase in the organic matter as the primary concentration of the dye, the rate of decolorization decreased.…”

Treatment of composite wastewater of a cotton textile mill by thermolysis and coagulation

“…Jar-test experiments were conducted in a series of six graduated glass cylinders for 5 min rapid mixing (RM) at 80 rpm followed by 30 min slow mixing (SM) at 40 rpm and 30 min settling [23,24].…”