Simple Fabrication of PEG Modified W18O49 for Enhanced Adsorption Performance towards Methylene Blue

2021 ◽  
Vol 67 ◽  
pp. 81-87
Author(s):  
Hai Yang Fu ◽  
Xue Jiao Li ◽  
Wei Sun ◽  
Dong Yue Liu ◽  
Xiao Fei Gao ◽  
...  
Keyword(s):  
Methylene Blue ◽  
High Surface ◽  
Raw Material ◽  
Adsorption Model ◽  
Polyethylene Glycol 400 ◽  
Adsorption Performance ◽  
Peg 400 ◽  
Colored Wastewater ◽  
Enhanced Adsorption ◽  
Tungsten Chloride

The W18O49 nanoparticles were synthesized by solvothermal method with tungsten chloride as raw material and n-propanol as solvent. Polyethylene glycol 400 (PEG-400) was modified for W18O49 nanoparticles (W18O49@PEG). The structure and morphology of W18O49 and W18O49@PEG were characterized by XRD and SEM. Methylene blue aqueous solution was used as wastewater adsorption model. And the comparative experiments with other absorbent materials, such as artificial zeolite and activated carbon were also conducted. The results revealed that after modifying by PEG-400, W18O49 has a better adsorption performance than other materials due to its large specific surface area and high surface energy. Finally adsorption circulation experiment was performed，the results indicate that the W18O49@PEG nanoparticles show great potential in the treatment of colored wastewater.

scholarly journals Synthesis of activated carbon from biowaste of fir bark for methylene blue removal

2019 ◽  
Vol 6 (9) ◽  
pp. 190523 ◽  
Author(s):  
Lu Luo ◽  
Xi Wu ◽  
Zeliang Li ◽  
Yalan Zhou ◽  
Tingting Chen ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Nonlinear Models ◽  
Low Cost ◽  
High Surface ◽  
High Surface Area ◽  
Raw Material ◽  
Maximum Adsorption Capacity ◽  
Koh Activation ◽  
Mb Adsorption

Activated carbon (AC) was successfully prepared from low-cost forestry fir bark (FB) waste using KOH activation method. Morphology and texture properties of ACFB were studied by scanning and high-resolution transmission electron microscopies (SEM and HRTEM), respectively. The resulting fir bark-based activated carbon (ACFB) demonstrated high surface area (1552 m 2 g −1 ) and pore volume (0.84 cm 3 g −1 ), both of which reflect excellent potential adsorption properties of ACFB towards methylene blue (MB). The effect of various factors, such as pH, initial concentration, adsorbent content as well as adsorption duration, was studied individually. Adsorption isotherms of MB were fitted using all three nonlinear models (Freundlich, Langmuir and Tempkin). The best fitting of MB adsorption results was obtained using Freundlich and Temkin. Experimental results showed that kinetics of MB adsorption by our ACFB adsorbent followed pseudo-second-order model. The maximum adsorption capacity obtained was 330 mg g −1 , which indicated that FB is an excellent raw material for low-cost production of AC suitable for cationic dye removal.

VO2(D) hollow core–shell microspheres: synthesis, methylene blue dye adsorption and their transformation into C/VOxnanoparticles

2018 ◽  
Vol 5 (3) ◽  
pp. 550-558 ◽  
Author(s):  
Liangmiao Zhang ◽  
Jianing Yao ◽  
Fang Xia ◽  
Yunfeng Guo ◽  
Chuanxiang Cao ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Dye Adsorption ◽  
Blue Dye ◽  
Core Shell ◽  
Methylene Blue Dye ◽  
Hollow Core ◽  
Adsorption Ability ◽  
Adsorption Performance ◽  
Enhanced Adsorption ◽  
Mb Adsorption

Hollow core–shell VO2(D) microspheres were fabricated and they exhibited excellent MB adsorption ability; and the regenerated C/VOxnanoparticles showed enhanced adsorption performance and good reusability.

A facile synthesis of one-dimensional hierarchical magnetic metal silicate microtubes with enhanced adsorption performance

2020 ◽  
Vol 49 (32) ◽  
pp. 11120-11128
Author(s):  
Qian Niu ◽  
Min Zhang ◽  
Libin Liu ◽  
Jing Zheng ◽  
Qunling Fang ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Bovine Hemoglobin ◽  
Excellent Performance ◽  
Facile Synthesis ◽  
One Dimensional ◽  
Adsorption Performance ◽  
Metal Silicate ◽  
Magnetic Metal ◽  
Enhanced Adsorption

One-dimensional hierarchical magnetic metal silicate microtubes were facilely synthesized with MoO3 as template, which displayed excellent performance as good adsorbents for bovine hemoglobin (BHb) and methylene blue.

scholarly journals Removal of methylene blue in water by electrospun PAN/β-CD nanofibre membrane

e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 398-410
Author(s):  
Zhaoying Sun ◽  
Tao Feng ◽  
Zhihui Zhou ◽  
Hongdan Wu
Keyword(s):  
Methylene Blue ◽  
Adsorption Capacity ◽  
Ion Concentration ◽  
Maximum Adsorption Capacity ◽  
Nanofiber Membrane ◽  
Adsorption Model ◽  
Adsorption Performance ◽  
The Matrix ◽  
Isotherm Adsorption ◽  
Hydrophobic Binding

Abstract The polyacrylonitrile (PAN) nanofiber membrane prepared by the electrospinning technology was used as the matrix, and β-cyclodextrin (β-CD) was introduced into it to synthesize the composite nanofiber membrane. Taking methylene blue as the object, the adsorption performance of nanofiber membranes for dyes in the aqueous solution was studied. The structure, morphology, and specific surface area of the nanofiber membrane were characterized using FTIR, SEM, BET, XRD, and EDS. Meantime, the adsorption equilibrium was also explored. After being modified by cyclodextrin, a large number of cavity structures and hydrophobic binding sites were provided for the nanofiber membrane, and the adsorption performance was significantly improved. The results showed that the maximum adsorption capacity of the PAN/β-CD blend nanofiber membrane (at 25℃) for methylene blue was 108.66 mg g−1. The effects of pH, adsorption time, ion concentration, and adsorbent dosage on the adsorption capacity were also investigated. In addition, by fitting with the adsorption model, the adsorption process was more complex with the quasi-secondary adsorption kinetics and Langmuir isotherm adsorption model.

scholarly journals Enhanced adsorption performance of methylene blue from aqueous solutions onto modified adsorbents prepared from sewage sludge

2018 ◽  
Vol 78 (4) ◽  
pp. 803-813
Author(s):  
Tao Chen ◽  
Bo Yan ◽  
Da-Mao Xu ◽  
Li-li Li
Keyword(s):  
Methylene Blue ◽  
Sewage Sludge ◽  
Adsorption Capacity ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Order Model ◽  
Adsorption Performance ◽  
Pseudo Second Order ◽  
Enhanced Adsorption ◽  
Modified Adsorbents

Abstract In the present work, an attractive and creative adsorbent derived from sewage sludge was freshly fabricated via pyrolysis technology, followed by modification for improving the absorptive ability. First, the (NH4)2S2O8 modified pyrolytic sludge (MSAP) was selected from 19 modified pyrolytic sludges for the highest removal efficiency and adsorption capacity for methylene blue (MB). Then, the adsorption performance for MB of MSAP was compared systematically with the pristine adsorbent (MSDW) by batch adsorption experiments. The main conclusions were that the adsorption process was better fitted with the Langmuir model, and the maximum adsorption capacity (qmax) of MSAP was observed to be 149.05 mg g−1. Moreover, the adsorption kinetics data showed a good fit with the pseudo second order model; when the addition of MSAP was 1.0 g·L−1, the rate constant was 0.05 g·mg−1·min−1, which was far greater than that of the other modified adsorbents.

Elaboration of novel adsorbent from Moroccan oil shale using Plackett–Burman design

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Methylene Blue ◽  
Oil Shale ◽  
Screening Method ◽  
Raw Material ◽  
Coefficient Of Determination ◽  
Processing Temperature ◽  
Acid Pretreatment ◽  
Experimental Data Processing ◽  
Experimental Values ◽  
Maximal Capacity

The new adsorbents were prepared from Moroccan oil shale by chemical and physical process .In this study, experimental Plackett-Burman has been used as a screening method to study six factors for the development of materials to adsorbent basis of oil shale Moroccan. The factors have been identified by two levels, To Know temperature (°C), Processing time (min), mass ratio (m precursor/m acid), Pretreatment mixture the precursor with acid, origin of the raw material and type of the activating agent (H2SO4, H3PO4).And it was chosen as a response The maximum quantity of adsorption of the molecule of Methylene blue (Qads in mg/g) and the specific surface measure by the method bet (Sbet in m2/g), The predicted values were in agreement with the experimental values with a coefficient of determination (R2) of 0.98. The model has been validated by experiments subsequent to optimized conditions. The experimental data processing by software JMP 7 showed that the processing temperature The report of oil shale on the acid and activation time were the important effect on the maximal capacity of adsorption of methylene blue. The sample prepared at 237 °C during 215 min with pre-processing has a maximal capacity of adsorption equal to 54mg/g according to model of adsorption of Langmuir and SBET equal to 143 m2/g.

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