Hybrid treatment of coagulation/flocculation process followed by ultrafiltration in TIO2-modified membranes to improve the removal of reactive black 5 dye

Beluci, Natália de Camargo Lima; Mateus, Gustavo Affonso Pisano; Miyashiro, Carolina Sayury; Homem, Natália C.; Gomes, Raquel Guttierres; Fagundes‐Klen, Márcia Regina; Bergamasco, Rosângela; Vieira, Angélica Marquetotti Salcedo

doi:10.1016/j.scitotenv.2019.01.199

Cited by 173 publications

(68 citation statements)

References 39 publications

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“…The experiments were carried out in a series of Erlenmeyer flask (250 mL) containing MB dye solution (100 mL) with different initial MB dye concentrations (25-200 mg/L). The different dosages of SATCS (0.02-0.2 g) were added to the 100 mL of MB dye solution with different levels of pH (3)(4)(5)(6)(7)(8)(9)(10), and agitated at a fixed shaking speed of 110 strokes/min at 303 K by using a water bath (WNB7-45, Memmert, Germany). After the adsorption process, the adsorbents was separated from aqueous solutions using a syringe filter (0.20 µm), and the MB dye uptake was calculated by UV-Vis spectroscopy (HACH DR 2800) at 661 nm.…”

Section: Batch Adsorption Experimentsmentioning

confidence: 99%

“…MB dye causes harmful effects on human health such as nausea, vomiting, heart rate increasing and eye/skin irritation [4,5]. Several methods were applied to remove textile dyes prior to discharge into water such as adsorption [6], photocatalysis [7], oxidation [8], and coagulation [9]. Adsorption is a prime wastewater treatment method for dye removal due to its simplicity of design, non-generation of toxic materials, low cost and high efficiency [10,11].…”

Section: Introductionmentioning

confidence: 99%

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Acid-factionalized biomass material for methylene blue dye removal: a comprehensive adsorption and mechanism study

Jawad

Abdulhameed

Mastuli

2020

Journal of Taibah University for Science

213

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Coconut (Cocos nucifera) shell was chemically treated with sulfuric acid (H2SO4) to produce acid-factionalized biosorbent for methylene blue (MB) dye removal from aqueous environment. Various analytical techniques were utilized to investigate the surface area, surface morphology, crystallinity, elemental composition, and functional group of the sulfuric acid-treated coconut shell (SATCS). The adsorption parameters such as adsorbent dosage (0.02-0.20 g), solution pH (3-10), contact time (0-360 min), and initial MB dye concentration (25-200 mg/L) were studied. The adsorption results were illustrated by pseudo-second order kinetic and Freundlich isotherm models. It was found that SATCS has a maximum adsorption capacity (q max) of 50.6 mg/g at 303 K. The adsorption mechanism of MB dye on the SATCS surface can be assigned to the various types of interactions such as electrostatic attractions, H-bonding interaction, and π-π interaction. This work shows SATCS as promising acid-factionalized biosorbent for removal MB dye.

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Section: Batch Adsorption Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Acid-factionalized biomass material for methylene blue dye removal: a comprehensive adsorption and mechanism study

Jawad

Abdulhameed

Mastuli

2020

Journal of Taibah University for Science

213

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“…Firstly, the organic pollutant can ionize as a cationic product in the aqueous medium, and then the cations are adsorbed on the perlite-based geopolymer structure surface, as presented in equations (3) and (4). When the metal oxide semiconductor particles of Fe 2 O 3 in the raw material (in Table 1) are irradiated by UV, the excited electron (e − ) and hole (h + ) pairs are formed, as presented in equation (5). Subsequently, the transition metal ions of Fe 3+ in the material ensnare electron (e − ) and hole (h + ) combine with H 2 O molecule to produce hydroxyl radical (equations (6) and (7)).…”

Section: Degradation Of Mb Dye At Different Conditionsmentioning

confidence: 99%

“…is makes them even more dangerous to the environment, which is why it needs to be removed from wastewaters before discharge in the aqueous system. Several wastewater treatment techniques such as ultrafiltration [2], membrane separation [3], ion exchange [4], coagulation/flocculation [5], electrochemical processes [6], adsorption [7,8], and photocatalytic degradation [9] have been used to remove and degrade the dyes from water and wastewater. e photocatalytic degradation method is based on the degradation of organic pollutants in the presence of UV and a material doped by a photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Methylene Blue from Aqueous Medium onto Perlite-Based Geopolymer

Saufi

Alouani

Alehyen

et al. 2020

International Journal of Chemical Engineering

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In this work, geopolymer synthesized with perlite and an alkaline activator medium was evaluated as a new adsorbent and photocatalyst for degradation of methylene blue (MB) dye from an aqueous medium. The functional group, the structure, and the morphology of the raw and the synthesized materials were characterized using FT-IR, XRD, and SEM analysis. The degradation of MB in the contaminated solution was examined using the spectrophotometric technique. Several analysis methods revealed the formation of the aluminosilicate gel after the geopolymerization reaction. The kinetics data with UV and without UV irradiations were well fitted with the pseudo-second-order equation. The results indicated that the degradation efficiency of cationic dye by perlite-based geopolymer without and with UV was up to 88.94% and 97.87% in 4 hours, respectively. The degradation efficiencies of methylene blue are in the following order: perlite-based geopolymer under UV irradiations is greater than perlite-based geopolymer without UV irradiations that is larger than UV irradiations. The overall experimental results suggested that the new elaborated material with synergetic adsorption and photocatalytic activities has a great potential for the treatment of water contaminated by hazardous substances.

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“…Therefore, treatment of aqueous solutions containing dyes has been developed in the last few years . Several chemical and physical methods, including coagulation/flocculation, nanofiltration, oxidation‐precipitation, ozonation, Fenton and photo Fenton, and adsorption, have been revealed in the literature for dye removal from wastewater. Among the mentioned techniques, adsorption is a simple, inexpensive and useful method for removal of dyes from aqueous solutions .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

Toutounchi

Shariati

Mahanpoor

2019

Applied Organom Chemis

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In this study, core‐shell structures of magnetite nanoparticles coated with CMK‐8 ordered mesoporous carbon (Fe3O4@SiO2‐CMK‐8 NPs) have been successfully synthesized for the first time by carbonizing sucrose inside the pores of the Kit‐6 mesoporous silica. The nano‐sized mesoporous particles were characterized by X‐ray diffraction, Fourier transform‐infrared spectroscopy, scanning electron microscope, dynamic light scattering, vibrating‐sample magnetometer, Brunauer–Emmett–Teller (BET) and transmission electron microscopy instruments. The obtained nanocomposite was used for removal of Reactive Yellow 160 (RY 160) dye from aqueous samples. The N2 adsorption–desorption method (at 77 K) confirmed the mesoporous structure of synthesized Fe3O4@SiO2‐CMK‐8 NPs. Also, the surface area was calculated by the BET method and Langmuir plot as 276.84 m2/g and 352.32 m2/g, respectively. The surface area, volume and pore diameter of synthesized nanoparticles (NPs) were calculated from the pore size distribution curves using the Barrett–Joyner–Halenda formula (BJH). To obtain the optimum experimental variables, the effect of various experimental parameters on the dye removal efficiency was studied using Taguchi orthogonal array experimental design method. According to the experimental results, about 90.0% of RY 160 was removed from aqueous solutions at the adsorbent amount of 0.06 g, pH 3 and ionic strength = 0.05 m during 10 min. The pseudo‐second order kinetic model provided a very good fit for the RY 160 dye removal (R2 = 0.999). The Langmuir, Freundlich, Temkin and Dubinin–Radushkevich models were applied to describe the equilibrium isotherms, and the Langmuir isotherm showed the best fit to data with the maximum adsorption capacity of 62.893 mg/g. Furthermore, the Fe3O4@SiO2‐CMK‐8 NPs could be simply recovered by external magnet, and exhibited recyclability and reusability for a subsequent six runs.

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Hybrid treatment of coagulation/flocculation process followed by ultrafiltration in TIO2-modified membranes to improve the removal of reactive black 5 dye

Cited by 173 publications

References 39 publications

Acid-factionalized biomass material for methylene blue dye removal: a comprehensive adsorption and mechanism study

Acid-factionalized biomass material for methylene blue dye removal: a comprehensive adsorption and mechanism study

Photocatalytic Degradation of Methylene Blue from Aqueous Medium onto Perlite-Based Geopolymer

Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

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