orangeyz/Orange 7/Sodium 4-[(2-hydroxy-1-naphthyl)diazenyl]benzenesulfonate/orangeiic/sodium 4-[(2-hydroxynaphthalen-1-yl)diazenyl]benzenesulfonate/4-[(2-hydroxy-1-naphthyl)azo]benzenesulfonic acid,sodium salt/Benzenesulfonic acid, 4-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-, sodium salt (1:1)/ORANGE 4/ORANGE1/Acid Orange/tropaeolin ooo/orangeya
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provides coniferyl ferulate(CAS#:633-96-5) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of coniferyl ferulate are included as well.>> amp version: coniferyl ferulate
Carbon-based catalysts have attracted high attention since they are greener and cheaper, while magnetic nanomaterials are very useful in environmental application because of the easy recovery and operation given by the magnetic separability. Therefore, graphitic carbon nitride modified magnetic carbon nanocomposites Fe3O4@C/g-C3N4 was prepared herein for the first time as a new carbon-based catalyst for the activation of peroxymonosulfate (PMS). The catalytic properties of Fe3O4@C/g-C3N4 in activating PMS for the degradation of Acid Orange 7 (AO 7), a model organic pollutant, were investigated. AO 7 degradation efficiency was significantly enhanced after modification of Fe3O4@C with g-C3N4, and the composite Fe3O4@C/g-C3N4 from loading of 5?wt% g-C3N4 and calcined at 300?°C for 30?min exhibited the best performance. AO 7 could be efficiently decolorized using the “Fe3O4@C/C3N4 (5%) + PSM” system within the pH range of 2-6, and 97% of AO 7 could be removed in 20 min without pH adjustment (pH = 4). Radical quenching and EPR studies confirmed that both sulfate and hydroxyl radicals produced from PMS activation were the active species responsible for the oxidation of AO 7. The degradation mechanism was suggested based on the experimental results and XPS analyses. It was proposed that the CO groups on the carbon surface of Fe3O4@C rather than the CO in g-C3N4 played a key role as the active sites for PMS activation. The catalyst was magnetically separable and displayed good stability and reusability, thus providing a potentially green catalyst for sustainable remediation of organic pollutants.
Copyright ? 2018 Elsevier Ltd. All rights reserved.
Advanced oxidation process; Dye degradation; Graphitic carbon nitride; Magnetic carbon; Peroxymonosulfate
Degradation of Acid Orange 7 by peroxymonosulfate activated with the recyclable nanocomposites of g-C3N4 modified magnetic carbon.
Guo F1, Lu J1, Liu Q1, Zhang P2, Zhang A3, Cai Y4, Wang Q5.
Electro-peroxone is a novel advanced oxidation process that surpasses ozonation or peroxone because of its advantages. In this technology, combining ozone and hydrogen peroxide generated electrochemically leads to the production of hydroxyl radicals, which are the strongest oxidizing agents. In this study, a cylindrical reactor with a continuous circular flow using novel arrangements of electrodes was used to examine the effects of variant parameters on dye removal efficiency. Acid Orange 7 (C16H11N2NaO4S) served as an indicator pollutant. Based on overall energy consumption and energy consumption per dye removed weight, electro-peroxone not only has proper efficiency at high dye concentrations, it also has the least energy consumption per dye removed weight; 53?KWh kg-1 is achieved for 500?mg?L-1 initial dye concentration at 99% removal efficiency after 40?min. The results show that at the optimum condition of [Dye]?=?500?mg?L-1, pH?=?7.7, applied current?=?0.5 A, O3 rate?=?1?L?min-1, and [Na2SO4]?=?0.1?M, dye is removed completely after 90?min and COD and TOC removal is 99% and 90%, respectively. LC-MS results also showed that AO7 initially was converted to more toxic compounds than AO7 like benzoic acid but finally linear acidic intermediate with less toxicity such as fumaric acid was formed.
Copyright ? 2019 Elsevier Ltd. All rights reserved.
Acid orange 7; Advanced oxidation process; Electro-peroxone; Energy consumption; Hydrogen peroxide
Acid Orange 7 treatment and fate by electro-peroxone process using novel electrode arrangement.
Ghalebizade M1, Ayati B2.
Although a large amount of textile wastewater is discharged at high temperatures, azo dye reduction under extreme-thermophilic conditions by mixed cultures has gained little attention. In this study, Acid Orange 7 (AO7) was used as the model azo dye to demonstrate the decolorization ability of an extreme-thermophilic mixed culture. The results showed that a decolorization efficiency of over 90% was achieved for AO7. The neutral red (NR, 0.1?mM) could promote AO7 decolorization, in which the group of Cell?+?NR offered the highest decolorization rate of 1.568?1/h and t1/2 was only 0.44?h, whereas after CuCl2 addition, the decolorization rate (0.141?1/h) was lower and t1/2 (4.92?h) was much longer. Thus, CuCl2 notably inhibited this process. Caldanaerobacter (64.0%) and Pseudomonas (25.4%) were the main enriched bacteria, which were not reported to have the ability for dye decolorization. Therefore, this study extends the application of extreme-thermophilic biotechnology.
Copyright ? 2019 Elsevier Ltd. All rights reserved.
Acid Orange 7; Caldanaerobacter; Decolorization; Extreme-thermophilic; Mixed culture; Pseudomonas
Decolorization of Acid Orange 7 by extreme-thermophilic mixed culture.
Zhang F1, Guo X1, Qian DK1, Sun T1, Zhang W1, Dai K1, Zeng RJ2.