Preparation of magnetic MnFe2O4-Cellulose aerogel composite and its kinetics and thermodynamics of Cu(II) adsorption

Cui, Sheng; Wang, Xue; Zhang, Xin; Xia, Wei; Tang, Xianglong; Lin, Benlan; Wu, Qi; Shen, Xiaodong

doi:10.1007/s10570-017-1598-x

Cited by 60 publications

(22 citation statements)

References 40 publications

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“…First Magnetic materials include: (i) the classical Fe 3 O 4 , easily formed by the coprecipitation reaction, but also prepared with tunable shapes and behaviors using sol-gel and hydrothermal pathways [24,31]; (ii) MnFe 2 O 3 , which is a good photocatalyst in activating H 2 O 2 or peroxymonosulfate for substrate oxidation [25,35,36,39]; (iii) CoFe 2 O 4 , often employed as an adsorbent [33,41]; (iv) among others, the zero valent iron Fe 0 (ZVI), typically produced by reduction from oxides, which covers a special role due its very high magnetization that makes it suitable in responding very efficiently to applied magnetic fields for a fast separation from aqueous media [1,30].…”

Section: Refmentioning

confidence: 99%

“…However, as mentioned above, the main application of iron-based systems still remains in the field of adsorption. Iron-based nanoparticles, in fact, can be functionalized very easily to tune their removal efficiency towards several contaminants ranging from organic molecules to metals and ions [1,[21][22][23][24][25][26][27][28][29][30][31][32][33][34]40,41].…”

Section: Refmentioning

confidence: 99%

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The “Lab4treat” Outreach Experience: Preparation of Sustainable Magnetic Nanomaterials for Remediation of Model Wastewater

et al. 2021

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The Lab4treat experience has been developed to demonstrate the use of magnetic materials in environmental applications. It was projected in the frame of the European project Mat4Treat, and it was tested several times in front of different audiences ranging from school students to the general public in training and/or divulgation events. The experience lends itself to discuss several aspects of actuality, physics and chemistry, which can be explained by modulating the discussion depth level, in order to meet the interests of younger or more experienced people and expand their knowledge. The topic is relevant, dealing with the recycling of urban waste and water depollution. The paper is placed within the field of water treatment for contaminant removal; therefore, a rich collection of recent (and less recent) papers dealing with magnetic materials and environmental issues is described in the Introduction section. In addition, the paper contains a detailed description of the experiment and a list of the possible topics which can be developed during the activity. The experimental approach makes the comprehension of scientific phenomena effective, and, from this perspective, the paper can be considered to be an example of interactive teaching.

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Section: Refmentioning

confidence: 99%

Section: Refmentioning

confidence: 99%

The “Lab4treat” Outreach Experience: Preparation of Sustainable Magnetic Nanomaterials for Remediation of Model Wastewater

et al. 2021

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“…The surface of bio-materials containing rich in hydroxyl groups (-OH) has a stronger adsorption capacity for metal ions. In recent studies, it has been a trend that modification of natural cellulosic aerogel by various crosslinkers containing carboxylic (-COOH) [55], amine (-NH 2 ) groups [17], or magnetic-controlled [56] are effective policies to improve its contaminated water removal (table 2). The chelation of complexation, ion exchange, or coordination of -OH, -NH 2 , and -COOH functional groups attract and connect contaminant ions to the active sites for adsorption.…”

Section: 1mentioning

confidence: 99%

“…The removal mechanism of Cr 6+ ions by FBC aerogel was the redox reaction between the active component magnetic nanoparticles-chitosan and metals ions, as well as the number of amino -NH 2 and carboxyl -COOH groups on the surface of the chitosan via electrostatic interaction [57]. Moreover, the modified adsorbents are better reusability in addition to their effective adsorption capacity [56].…”

Section: 1mentioning

confidence: 99%

Recent Developments in Water Treatment by Cellulose Aerogels from Agricultural Waste

Nguyen

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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Water pollution caused by inorganic and organic compounds affects seriously health risks and the destruction of the water balance of the ecosystem. Water remediation is one of the greatest challenges of the modern age, which is faced by several countries in over the world. Many advanced technologies have been developed in recent years to manage this alarming problem. One of the recent research directions is to utilize agricultural waste, which is an abundant, low-cost, eco-friendly source, to manufacture cellulose aerogels for the removal of heavy metals, dyes, and oils from contaminated water. This review paper focuses on the latest green fabrication of bio-aerogels from various cellulose-based plant waste and studies on the kinetics and influence of factors such as contact time, pH solution, initial concentration, and temperature on the adsorption process to better understand the mechanisms of water treatment by the cellulose aerogels. Based on the discussion and summary, the potential of agro-waste sources in their value-added chain by developing efficient water treatment cellulose aerogels is comprehensively overviewed.

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“…In recent years, aerogel has been considered a promising insulation material. (Baetens et al 2011) At the same time, high porosity and large specific surface area show superior adsorption capacity (Cui et al 2018). It can be widely used in sewage treatment, air purification, nuclear waste treatment, and other environmental protection fields (Pierre and Pajonk 2002).…”

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confidence: 99%

Ultra-efficient Copper Ions Adsorption of Chitosan-montmorillonite Composite Aerogel for Wastewater Treatment

Shang

Zhao

et al. 2021

Preprint

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The modified montmorillonite(MMT) has a two-dimensional stable and ordered lamellar structure. The addition of chitosan(CS) cross-links the two-dimensional sheets to build a three-dimensional network structure with a high specific surface area. We have prepared the best MMT-based water treatment materials that have been reported. This new type of aerogel can efficiently adsorb heavy metal ions in wastewater. The structure and performance of the composite material were characterized in this article. Besides, the adsorption kinetics, adsorption thermodynamics, pH influence, and recycling performance are all focused on. The adsorption equilibrium time of CS-MMT2 is 50 min. The removal rate of Cu2+ is as high as 98.21%. The maximum adsorption capacity is 86.95 mg/g. The adsorption process of Cu2+ by CS-MMT composite aerogel conforms to the quasi-second-order kinetic model and the Langrangian adsorption isotherm. After three cycles, the removal rate of Cu2+ by CS-MMT2 remained above 80%. This article also involves the discussion of the material's adsorption mechanism for Cu2+. This is a kind of environmentally friendly material that can be mass-produced, cheap, efficient, and excellent, which is of great significance to the development of environmental protection.

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Preparation of magnetic MnFe2O4-Cellulose aerogel composite and its kinetics and thermodynamics of Cu(II) adsorption

Cited by 60 publications

References 40 publications

The “Lab4treat” Outreach Experience: Preparation of Sustainable Magnetic Nanomaterials for Remediation of Model Wastewater

The “Lab4treat” Outreach Experience: Preparation of Sustainable Magnetic Nanomaterials for Remediation of Model Wastewater

Recent Developments in Water Treatment by Cellulose Aerogels from Agricultural Waste

Ultra-efficient Copper Ions Adsorption of Chitosan-montmorillonite Composite Aerogel for Wastewater Treatment

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