Hemp fibers modified with graphite oxide as green and efficient solution for water remediation: Application to methylene blue

Chemosphere ◽  
2021 ◽  
pp. 132614
Author(s):  
Gianluca Viscusi ◽  
Elena Lamberti ◽  
Giuliana Gorrasi
Keyword(s):  
Methylene Blue ◽  
Graphite Oxide ◽  
Efficient Solution ◽  
Water Remediation ◽  
Hemp Fibers

Vanadium oxide nanoparticles for methylene blue water remediation: Exploring the effect of physicochemical parameters by process modeling

2020 ◽  
Vol 318 ◽  
pp. 114046
Author(s):  
Mohammad Hossien Saghi ◽  
Mehdi Qasemi ◽  
Hosein Alidadi ◽  
Ahmad Alahabadi ◽  
Ayoob Rastegar ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Vanadium Oxide ◽  
Process Modeling ◽  
Physicochemical Parameters ◽  
Water Remediation ◽  
Oxide Nanoparticles ◽  
Blue Water

Synthesis and characterization of metallic sulfide NPs doped graphene oxide for methylene blue adsorption to leuco methylene blue in aqueous mixture

2019 ◽  
Vol 04 ◽  
Author(s):  
Sachin Dev ◽  
Man Singh
Keyword(s):  
Methylene Blue ◽  
Graphene Oxide ◽  
Graphite Oxide ◽  
Metal Sulfide ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Adsorption Effect ◽  
Xps Spectra ◽  
Methylene Blue Adsorption ◽  
Doped Graphene

Introduction: The Metal Sulfide Nanoparticles Doped Graphene Oxide Sheets Have Been Studied And Were Used To Adsorb Fluorescent Methylene Blue Dye. Such Mechanism Efficiently Reduces The Dyes And Their Fluorescent Pollutants Through The Positive And Negative Holes. The Metal Sulfide Doped Graphene Oxide Could Be A Most Potential Route To Reduce From Fluorescent To Non-Fluorescent Species To Prevent The Global Warming And Other Pollution Being Caused By Them. Objectives: This Study Has Been To Strengthen And Widen The Applications Of Negative And Positive Holes Quick Formation At A Negligible Energy Barrier. Metal Sulfide Nanoparticles Were Doped With Graphene Oxide To Further Strengthen The Semiconducting And To Fastened The Rate Of Adsorption Of Methylene Blue Dye. Methods: Graphite Flakes Were Oxidized To Graphite Oxide With High Yield. The Graphite Oxide Was Sonicated In Water To Obtain Graphene Oxide And Doped With Metal Sulfide Nanoparticles In Situ. The Samples Were Characterized With High End Instruments And Used For Adsorption. Results: The Metal Sulfide Nanoparticles Were Successfully Doped With Graphene Oxide. The Ftir And Xps Spectra Infer Doping Of Metal Sulfide Nanoparticle In Graphene Oxide. That Enhanced Methylene Blue Adsorption Upto 97%. Conclusion: The Common Adsorption Effect Of Methylene Blue With Bare Graphene Oxide And Metal Sulfide Nanoparticles Doped Graphene Oxide Were Studied In This Paper. The Methylene Blue Adsorption Was Maximum (97%) By Cadmium Sulfide Doped Graphene Oxide Compared To Bare Graphene Oxide (87%), Nickel Sulfide Doped Graphene Oxide (79%), And Zinc Sulfide Doped Graphene Oxide (89%). The Metal Sulfide Nanoparticles Have Successfully Enhanced A Semiconductor Mechanism Of Graphene Oxide Especially With 3d And 4d10 Of Cds.

TiO2/Graphite Oxide Composite as an Efficient Photocatalyst for Organic Dye Reduction

2013 ◽  
Vol 699 ◽  
pp. 557-559 ◽  
Author(s):  
Rui Zhang ◽  
Yi He Zhang ◽  
Qi An ◽  
Yu Li ◽  
Ji Wu Shang ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Graphite Oxide ◽  
Reduction Rate ◽  
Organic Dye ◽  
Deionized Water ◽  
Liquid Phase Deposition ◽  
Tio2 Particles ◽  
Dye Reduction ◽  
Sample Method

A sample method was developed to fabricate composite of TiO2 and graphite oxide by a liquid phase deposition method. (NH4)2TiF6 and H3BO3 were stirred in distilled deionized water to prepare TiO2 particles which were then in situ deposited on graphite oxide. The photograph of scanning electron microscope (SEM) shows that the TiO2 particles are compact and uniform on the surface of graphite oxide sheets. The composite exhibited efficient photocatalytic activity under the ultraviolet light in degrading organic dye of methylene blue. There are two steps in the dye reducing process: the first half hour of porous adsorption by graphite oxide, and the photocatalytic degradation by TiO2 particles. In this case, the methylene blue reduces sharply in the first half hour with the concentration from 10 mg L-1 to 5.8 mg/L. From then, the reduction rate comes down gradually with the concentration of 0.9 mg L-1 after 6 hours UV lighting. The synergism of TiO2 particles and graphite oxide increases the reduction of methylene blue and possesses composite of reutilization ability practically.

scholarly journals Cellulose Hydrogels for Rapid Dye Removal from Water

2020 ◽  
Author(s):  
Justin Harris ◽  
Anne McNeil
Keyword(s):  
Methylene Blue ◽  
Dye Removal ◽  
Cellulose Nanofibers ◽  
Water Sources ◽  
Water Remediation ◽  
Clean Water ◽  
Cationic Dye ◽  
Gel Formation ◽  
Potential Solution ◽  
Wood Pulps

<div><p>Clean water has become increasingly difficult to access due to the environmental discharge of pollutants. One potential solution is to develop materials that can efficiently remove pollutants from water sources through adsorption. Hydrogels have been explored for water remediation, but they often require long times to reach high levels of adsorption. To overcome this limitation, we developed a quick and locally formed hydrogel that adsorbs a common cationic dye during gel formation. Specifically, we demonstrate that hydrogels derived from cellulose – a renewable, non-toxic, and biodegradable resource – can efficiently remove methylene blue from water within seconds. We found that both sulfated cellulose nanofibers and sulfated wood pulps form localized gels when mixed with solutions containing a soluble, cationic cellulose derivative and the cationic dye. Overall, these localized hydrogels may be promising materials for remediating other water pollutants with further functionalization.</p></div>

Continuous adsorption of Pb(II) and methylene blue by engineered graphite oxide coated sand in fixed-bed column

2015 ◽  
Vol 330 ◽  
pp. 148-157 ◽  
Author(s):  
Ji-Lai Gong ◽  
Yong-Liang Zhang ◽  
Yan Jiang ◽  
Guang-Ming Zeng ◽  
Zhi-Hui Cui ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Graphite Oxide ◽  
Fixed Bed ◽  
Fixed Bed Column ◽  
Continuous Adsorption ◽  
Coated Sand

scholarly journals Easy Preparation of Liposome@PDA Microspheres for Fast and Highly Efficient Removal of Methylene Blue from Water

2021 ◽  
Vol 22 (21) ◽  
pp. 11916
Author(s):  
Vincenzo De Leo ◽  
Anna Maria Maurelli ◽  
Chiara Ingrosso ◽  
Fabio Lupone ◽  
Lucia Catucci
Keyword(s):  
Methylene Blue ◽  
High Efficiency ◽  
Adsorption Process ◽  
Water Remediation ◽  
Order Kinetic ◽  
Experimental Conditions ◽  
Weakly Alkaline ◽  
Effects Of Ph ◽  
Order Kinetic Model ◽  
Alkaline Conditions

Mussel-inspired chemistry was usefully exploited here with the aim of developing a high-efficiency, environmentally friendly material for water remediation. A micro-structured material based on polydopamine (PDA) was obtained by using liposomes as templating agents and was used for the first time as an adsorbent material for the removal of methylene blue (MB) dye from aqueous solutions. Phospholipid liposomes were made by extrusion and coated with PDA by self-polymerization of dopamine under simple and mild conditions. The obtained Liposome@PDA microspheres were characterized by DLS and Zeta potential analysis, TEM microscopy, and FTIR spectroscopy. The effects of pH, temperature, MB concentration, amount of Liposome@PDA, and contact time on the adsorption process were investigated. Results showed that the highest adsorption capacity was obtained in weakly alkaline conditions (pH = 8.0) and that it could reach up to 395.4 mg g−1 at 298 K. In addition, adsorption kinetics showed that the adsorption behavior fits a pseudo-second-order kinetic model well. The equilibrium adsorption data, instead, were well described by Langmuir isotherm. Thermodynamic analysis demonstrated that the adsorption process was endothermic and spontaneous (ΔG0 = −12.55 kJ mol−1, ΔH0 = 13.37 kJ mol−1) in the investigated experimental conditions. Finally, the applicability of Liposome@PDA microspheres to model wastewater and the excellent reusability after regeneration by removing MB were demonstrated.

Adsorption of Dye in Media Industry Pollution with Glass Wool Modified by Graphite Oxide

2013 ◽  
Vol 448-453 ◽  
pp. 119-122
Author(s):  
Yi Fei Zhang ◽  
Fei Bian ◽  
Yu Jing Yan ◽  
Guo Zhang
Keyword(s):  
Methylene Blue ◽  
Graphite Oxide ◽  
Glass Wool ◽  
Dynamic Adsorption ◽  
Media Industry ◽  
Adsorption Time

In order to resolve the dye pollutions in media industry, a new kind of glass wool modified by graphite oxide was prepared. This material could easily fill the filtration column and had good performance on the adsorption of methylene blue. Four kinds of samples like the glass wool modified once, twice, three times by graphite oxide and unmodified were used in our study. According to the dynamic adsorption experiments, the effective adsorption time of the glass wool modified three times is 95 min which is almost 4 times the length of the effective adsorption time of unmodified glass wool.

scholarly journals Cellulose Hydrogels for Rapid Dye Removal from Water

2020 ◽  
Author(s):  
Justin Harris ◽  
Anne McNeil
Keyword(s):  
Methylene Blue ◽  
Dye Removal ◽  
Cellulose Nanofibers ◽  
Water Sources ◽  
Water Remediation ◽  
Clean Water ◽  
Cationic Dye ◽  
Gel Formation ◽  
Potential Solution ◽  
Wood Pulps

<div><p>Clean water has become increasingly difficult to access due to the environmental discharge of pollutants. One potential solution is to develop materials that can efficiently remove pollutants from water sources through adsorption. Hydrogels have been explored for water remediation, but they often require long times to reach high levels of adsorption. To overcome this limitation, we developed a quick and locally formed hydrogel that adsorbs a common cationic dye during gel formation. Specifically, we demonstrate that hydrogels derived from cellulose – a renewable, non-toxic, and biodegradable resource – can efficiently remove methylene blue from water within seconds. We found that both sulfated cellulose nanofibers and sulfated wood pulps form localized gels when mixed with solutions containing a soluble, cationic cellulose derivative and the cationic dye. Overall, these localized hydrogels may be promising materials for remediating other water pollutants with further functionalization.</p></div>

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