The degradation of methyl orange and membrane fouling behavior in anaerobic baffled membrane bioreactor

Liu, Jiadong; Xiong, Jingxue; Tian, Changlin; Gao, Bo; Wang, Lei; Jia, Xiaolan

doi:10.1016/j.cej.2018.01.052

Cited by 60 publications

(12 citation statements)

References 28 publications

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“…Different techniques have been utilized in the removal of MO from the environment. They include electrocoagulation [32][33][34][35], ozonation [36-38], biological treatment [39], photo-degradation [40][41][42], membrane processes [43], and adsorption [44][45][46]. Due to the low cost and e cacy of adsorption, it is considered one of the best methods for the removal of MO dye from the environment [47][48][49].…”

Section: Introductionmentioning

confidence: 99%

Do Adsorbent Pore Size and Specific Surface Area Affect The Kinetics of Methyl Orange Aqueous Phase Adsorption?

Iwuozor

Ighalo

Emenike

et al. 2021

Preprint

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The kinetics of any adsorption reaction gives more information on the rate at which the adsorbate is taken up by the adsorbent, which is responsible for the residence time of an adsorbate uptake at the adsorbent-aqueous phase interface. This study was aimed at determining the effect of pore size as well as specific surface area (SSA) on the kinetics of the uptake of methyl orange (MO). The basis of the analysis was from data on kinetic models sourced from recent literature. ANOVA of the data revealed that statistical significance was achieved for SSA but not for pore size (at a significance level of 0.05). This called for a more theoretical perspective on the research data. The kinetics constant for micropores is far higher than for the two selected regimes of the mesopore. For the SSA, 100–10 m2/g adsorbents had a higher mean k2 value. This suggested that adsorbents in the SSA range had pore sizes that favour rapid uptake. However, further studies will be needed to gain a better understanding of how SSA affects adsorption kinetics. The study also discussed the technical limitations that could arise due to the use of kinetic model linearisation.

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Section: Introductionmentioning

confidence: 99%

Do Adsorbent Pore Size and Specific Surface Area Affect The Kinetics of Methyl Orange Aqueous Phase Adsorption?

Iwuozor

Ighalo

Emenike

et al. 2021

Preprint

View full text Add to dashboard Cite

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“…Therefore, the removal of such pollutants from water has become a challenge for environmental engineers. Several techniques have been applied for the removal of these harmful metallic ions and dyes from water and wastewater such as membrane filtration [ 9 ], photocatalytic reduction [ 10 ], biological treatment [ 11 ], precipitation [ 12 ], electrocoagulation [ 13 ], and adsorption [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Polymer-Based Magnetic Nanocomposite for Multi-Pollutants Removal from Water

et al. 2021

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A magnetic polymer-based nanocomposite was fabricated by the modification of an Fe3O4/SiO2 magnetic composite with polypyrrole (PPy) via co-precipitation polymerization to form PPy/Fe3O4/SiO2 for the removal of Congo red dye (CR) and hexavalent chromium Cr(VI) ions from water. The nanocomposite was characterized using various techniques including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), vibration sample magnetometer, and thermogravimetric analysis (TGA). The results confirm the successful fabrication of the nanocomposite in the size of nanometers. The effect of different conditions such as the contact time, adsorbent dosage, solution pH, and initial concentration on the adsorption process was investigated. The adsorption isotherm suggested monolayer adsorption of both contaminants over the PPy/Fe3O4/SiO2 nanocomposite following a Langmuir isotherm, with maximum adsorption of 361 and 298 mg.g−1 for CR dye and Cr(VI), respectively. Furthermore, the effect of water type on the adsorption process was examined, indicating the applicability of the PPy/Fe3O4/SiO2 nanocomposite for real sample treatment. Interestingly, the reusability of the nanocomposite for the removal of the studied contaminants was investigated with good results even after six successive cycles. All results make this nanocomposite a promising material for water treatment.

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“…Moreover, they can also combine with metal ions in wastewater to form complex pollutants. Several methods are used to remove these complex structures such as precipitation [15], membrane filtration [16,17], photocatalytic reduction [18], electrocoagulation [19], biological treatment [20], electrochemical removal [21], and adsorption [22][23][24][25][26][27][28]. In the past few decades, great attention has been paid to the adsorption process due to its ease of application on a large scale and its efficiency [29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Quaternization of Poly(2-diethyl aminoethyl methacrylate) Brush-Grafted Magnetic Mesoporous Nanoparticles Using 2-Iodoethanol for Removing Anionic Dyes

et al. 2021

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Magnetic mesoporous silica nanoparticles (Fe3O4-MSNs) were successfully synthesized with a relatively high surface area of 568 m2g−1. Fe3O4-MSNs were then modified with poly(2-diethyl aminoethyl methacrylate) (PDEAEMA) brushes using surface-initiated ARGET atom transfer radical polymerization (ATRP) (Fe3O4@MSN-PDMAEMA). Since the charge of PDEAEMA is externally regulated by solution pH, tertiary amines in the polymer chains were quaternized using 2-iodoethanol to obtain cationic polymer chains with a permanent positive charge (Fe3O4@MSN-QPDMAEMA). The intensity of the C−O peak in the C1s X-ray photoelectron spectrum increased after reaction with 2-iodoethanol, suggesting that the quaternization process was successful. The applicability of the synthesized materials on the removal of methyl orange (MO), and sunset yellow (E110) dyes from an aqueous solution was examined. The effects of pH, contact time, and initial dyes concentrations on the removal performance were investigated by batch experiments. The results showed that the Fe3O4@MSN-PDMAEMA sample exhibited a weak adsorption performance toward both MO and E110, compared with Fe3O4@MSN-QPDMAEMA at a pH level above 5. The maximum adsorption capacities of MO and E110 using Fe3O4@MSN-QPDMAEMA were 294 mg g−1 and 194.8 mg g−1, respectively.

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The degradation of methyl orange and membrane fouling behavior in anaerobic baffled membrane bioreactor

Cited by 60 publications

References 28 publications

Do Adsorbent Pore Size and Specific Surface Area Affect The Kinetics of Methyl Orange Aqueous Phase Adsorption?

Do Adsorbent Pore Size and Specific Surface Area Affect The Kinetics of Methyl Orange Aqueous Phase Adsorption?

Synthesis of Polymer-Based Magnetic Nanocomposite for Multi-Pollutants Removal from Water

Quaternization of Poly(2-diethyl aminoethyl methacrylate) Brush-Grafted Magnetic Mesoporous Nanoparticles Using 2-Iodoethanol for Removing Anionic Dyes

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