Synthesis and performance evaluation of a magnetic biocoagulant in the removal of reactive black 5 dye in aqueous medium

Miyashiro, Carolina Sayury; Mateus, Gustavo Affonso Pisano; Santos, Tássia Rhuna Tonial dos; Paludo, Michele Putti; Bergamasco, Rosângela; Fagundes‐Klen, Márcia Regina

doi:10.1016/j.msec.2020.111523

Cited by 36 publications

(8 citation statements)

References 43 publications

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“…The peaks appearing around 1577 and 1398 cm −1 respond to the O−C−O bond stretching vibration in 1,4benzenedicarboxylic acid. The peak at 1022 cm −1 was due to the Zr−O bond stretching vibration, and the peaks at 662 and 485 cm −1 were due to the stretching vibration of the μ3-O and μ3-OH bonds in the unit of Zr 6 O 4 (OH) 4 (COO) 12 . Compared with cotton, the curve of UiO-66/cotton fabric had new peaks at 1577, 1398, 1022, 745, 662, and 485 cm −1 , which were attributed to the UiO-66.…”

Section: Characterization Of Uio-66 and Uio-66/cottonmentioning

confidence: 99%

“…Currently, the treatment technologies of reactive dyes mainly include physical treatment, biological treatment, chemical treatment, and combined treatment processes. − In particular, adsorption method has the advantages of low cost, high efficiency, simplicity, and rapidity, which has been widely used in the field of dye adsorption. The conventional adsorption materials mainly include silica gel, activated alumina, and activated carbon, which have good performance in the removal of dye pollutants. , However, traditional adsorption materials have the disadvantages of low adsorption efficiency, difficult separation, and easy secondary contamination, resulting in the need for more effective adsorption materials. − …”

Section: Introductionmentioning

confidence: 99%

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In Situ Generated UiO-66/Cotton Fabric Easily Recyclable for Reactive Dye Adsorption

Zhang

Liu

et al. 2022

Langmuir

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In view of the environmental pollution caused by the widespread use of reactive dyes in the printing and dyeing industry, the modified cotton fabric was loaded with the extremely stable metal−organic frame (MOF) material UiO-66 for removing reactive dyes from colored wastewater. UiO-66/cotton fabric was prepared by in situ synthesis, and its surface morphology and structure were analyzed by XRD, SEM, BET, and XPS. The adsorption performance of UiO-66/cotton fabric on reactive dyes was investigated by adsorbent dosage, adsorption time and temperature, dye concentration, pH, and so on. The results indicated that the adsorption equilibrium time of UiO-66/cotton fabric on reactive orange 16 was 120 min, and the removal rate was about 98%. The adsorption process belongs to simple molecular layer chemisorption and can be regarded as a spontaneous heat absorption reaction, which was consistent with the proposed secondary kinetic model and Langmuir isothermal adsorption model. In addition, the reactive dyes with a higher molecular weight of each sulfonic acid group are more hydrophobic, and the dyes are more likely to aggregate and deposit on the adsorbent surface by electrostatic attraction, hydrogen bonding, and π−π accumulation. Therefore, this work provides a potential UiO-66/cotton fabric application for the effective adsorption of reactive dyes in textile wastewater.

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Section: Characterization Of Uio-66 and Uio-66/cottonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In Situ Generated UiO-66/Cotton Fabric Easily Recyclable for Reactive Dye Adsorption

Zhang

Liu

et al. 2022

Langmuir

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“…While the annual production of synthetic dyes is around 7x10 5 tons, it is estimated that around 50,000 tons of dye-containing wastewater is discharged into the receiving environment [2][3][4]. Discharging these dye-containing wastewaters to the receiving environment negatively affects photosynthesis by preventing light from passing through and decrease dissolved oxygen levels; they are also worrisome since they create toxic levels for flora and fauna even at low concentrations (> 1 ppm) [5,6]. The textile industry employs a variety of dye classes (including dispersed, direct, complex, and reactive etc.)…”

Section: Introductionmentioning

confidence: 99%

Decolorization of reactive azo dye by fenton and photo-fenton processes in aqueous solution: The influence of operating conditions, kinetics study, and performance comparison

Değermenci̇¹

2022

Bull. Chem. Soc. Eth.

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ABSTRACT. In this study, the effect of Fenton and photo-Fenton processes, which are advanced oxidation processes that use the hydroxyl radical for the decolorization of Novacron Black from aqueous solutions, on decolorization was investigated. Optimum levels of initial pH, temperature, hydrogen peroxide concentration, initial dyestuff concentration, and iron concentration were determined. Initial pH, Fe2+ concentration, temperature, and initial Novacron Black concentration are the most effective experimental parameters in the decolorization of Novacron Black with Fenton and photo-Fenton processes. While the Novacron Black concentration was 200 mg/L, the H2O2 concentration was 100 mg/L, the initial solution pH was 3, and the temperature was 20 °C, a decolorization efficiency of 82.1% was obtained in the Fenton process at a concentration of 5 mg/L Fe2+, while in the photo-Fenton process at a 2 mg/L Fe2+ concentration, a 94.6% decolorization efficiency was obtained. Upon decolorization of Novacron Black, the photo-Fenton process had a higher removal efficiency than the Fenton process, even at low iron concentrations. From data obtained at various concentrations of initial Novacron Black, the non-linear method was used to determine the decolorization kinetics of Novacron Black. Finally, an economic analysis was carried out to compare the differences in operating costs between Fenton and photo-Fenton processes. KEY WORDS: Advanced oxidation process, Decolorization, Fenton oxidation, Kinetic model, Photo-Fenton oxidation Bull. Chem. Soc. Ethiop. 2023, 37(1), 197-210. DOI: https://dx.doi.org/10.4314/bcse.v37i1.16

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“…Reactive Black-5 is carcinogenic, toxic, and mutagenic. it has a stable aromatic amine group, this causes high stability against biological degradation in water [6]. Disposal of Reactive Black-5 into the environment poses a major threat to public health because exposure to dyes causes respiratory system disorders, acute bronchitis, skin irritation, mutations, and bladder cancer [7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO/ECB (Eichhornia crassipes Biochar) as a Sustainable Efficient Photocatalyst for Photodegradation of Reactive Black-5

Mulyatun¹,

Udaibah²,

Hafidzotur³

et al. 2021

Proceedings of the International Conference on Science and Engineering (ICSE-UIN-SUKA 2021)

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ZnO/ECB photocatalyst (Eichhornia crassipes Biochar) has been synthesized to be applied as a photocatalyst in the degradation of Reactive Black-5 dye. ZnO/ECB photocatalyst was synthesized by the coprecipitation method with the ratio Zn(NO3)2.6H2O:ECB (M:w) 0.25:1 (0.25MZnO/ECB); 0.45:1 (0.45MZnO/ECB); and 0.6;1 (0.6MZnO/ECB). The characteristics of the ZnO/ECB photocatalyst were tested using X-ray diffraction, Fourier Transforms Infrared (FTIR), and UV Diffuse Reflectance Spectroscopy (UV-DRS) to determine the energy gap of the photocatalyst. The diffractogram pattern showed that the ZnO/ECB crystals were hexagonal wurtzite in shape. The results of the Kubelka-Munk UV-DRS analysis showed that the energy gap of the ZnO/ECB photocatalyst was smaller than that of pure ZnO. The efficiency of the ZnO/ECB catalyst was evaluated through photocatalytic degradation of an aqueous solution of Reactive Black-5 dye. Measurement of photocatalytic activity under UV radiation showed that ZnO/ECB photocatalyst has a higher degradation ability than pure ZnO. The high photocatalytic activity of the ZnO/ECB catalyst was due to the low energy gap of the ZnO/ECB catalyst, thereby reducing the electron and hole recombination rate in the synthesized photocatalyst. Photocatalyst of 0.25ZnO/ECB has the highest photocatalytic activity with degradation efficiency reaching 75.47%.

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Synthesis and performance evaluation of a magnetic biocoagulant in the removal of reactive black 5 dye in aqueous medium

Cited by 36 publications

References 43 publications

In Situ Generated UiO-66/Cotton Fabric Easily Recyclable for Reactive Dye Adsorption

In Situ Generated UiO-66/Cotton Fabric Easily Recyclable for Reactive Dye Adsorption

Decolorization of reactive azo dye by fenton and photo-fenton processes in aqueous solution: The influence of operating conditions, kinetics study, and performance comparison

Synthesis of ZnO/ECB (Eichhornia crassipes Biochar) as a Sustainable Efficient Photocatalyst for Photodegradation of Reactive Black-5

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