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Adsorption of Congo Red from Aqueous Solution Using La/MFA Composite as Adsorbent Beigang Li1,2,a* and Xiaohong Lin1,2,b 1Chemistry and Environment Science College, Inner Mongolia Normal University 2Inner Mongolia Key Laboratory of Environmental Chemistry, Hohhot 010022, China alibg@imnu.edu.cn, b781934157@qq.com Keywords: Fly ash; lanthanum ion; composite material; Congo Red; adsorption Abstract.
Such surface structure is more conducive to the adsorption of dye molecules.
Its chemical structure is shown in Fig. 4.
Fig. 3 Effect of time and temperature on sorption Fig. 4 The molecular structure of Congo Red To better understand the mechanism of the adsorption process of CR onto La/MFA, pseudo-first-order and pseudo-second-order kinetic models were widely used to analyze the experimental kinetic data.
This good adsorption effect is due to strong electrostatic attraction, Van der Waals' force, hydrogen bonding force and possible coordination between the adsorbent surface and dye molecules according to their composition, structure and nature.

Dependence of slurry plastic strength (Pm) on moisture content (W): A - zone of slurry pulp state; B - zone of coagulation structures; C - zone of condensed slurry state; a: 1, 2, 3 - Bayer sludge; 4 - waste fresh sludge at sludge outlet; 5 - old sludge at sludge outlet; 6 - fresh sludge from the pond edge; b: 1 - fresh Bayer sludge; 2 - sintering sludge; 3 - fresh sludge at sludge outlet; 4 - old sludge from dam edge; 5 - fresh sludge from pond edge; 6 - sludge from pond zone at well [9] Figure 5.
Composition of tested samples Water absorption 1 Concrete based on magnesia cement 20.6 2 Concrete based on Portland cement 0.3 3 Concrete based on magnesia cement with red mud filler 0.3 4 Portland cement concrete with red mud filler 7.5 Analysis of the structure and morphology of microsection of concrete samples with and without red mud filler was carried out with a scanning electron microscope Tescan Vega 3SBH.
The structure of the magnesia concrete of the experimental samples is shown in Fig. 11 and Fig. 12.
It is shown that the presence of red mud as a filler in concrete based on magnesia cement leads to densification and homogeneity of the structure (Fig. 11) in contrast to the tangled-fibrous structure (Fig. 12), typical of this type of concrete.
Pirainen, Mixed magnesia binders, Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of Kola Scientific Center of RAS, JSC "CNIIM-INVEST", Apatity, 2010.

However, the structure of the metal feedstock isn't a factor in the 3D sand mould production of metal parts (i.e. powder size/ sand shape) [8].
Journal of Industrial and Engineering Chemistry, 110, 68-83
Ahuja, Modeling and analysis for hardness and structure of nonferrous alloy castings produced using Zcast metal casting process through response surface methodology, Adv.
Lightweight metal cellular structures via indirect 3D printing and casting In Proceedings of the International Solid Freeform Fabrication Symposium, pp. 162-176. 2012 [29] Holtzer M, Górny M, Dańko R (2015) Microstructure and properties of ductile iron and compacted graphite iron castings. 1 ed.
Effects of hollow structures in sand mold manufactured using 3D printing technology.

Seshadri: Materials Chemistry and Physics, v.25, n.5 (1990) p. 439. ].
Moreover, from a cut sample (figure 1b), it is possible to observe that there was a penetration of metallic nickel inside the iron compact structure.
These data suggest that this structure would have enough strength to seal nuclear gases generated during the irradiation process in the reactor pool.
To have a fair comparison for the electroplating samples, the aluminum substract was slightly anodized, forming an imperfect structure of oxide with porosities.
This reduces the overall impedance of the structure, showed by the shrinking of the semicircles, as it becomes more plated by nickel.

Without adequate treatment, released dye wastes might exist stably in their molecular structure and remain in the environment for a long duration [2].
The chemical structure and other characteristics of this dye are shown in Table 1.
The chemical structure and other characteristics of dye Dye name Chemical generic Formula Molecular structure Direct yellow R Single azo C16H10N2Na2O7S2 2.2.
The dye wastewater discharged from textile industrial zones of Viet Nam contains chemical compounds with similar molecular structures to the direct yellow R.
Materials Physics and Chemistry (Professional) PhD thesis (2000)

Hydrothermal Synthesis and Characterization of Cerium-Based Oxides Randi Dangerfield1, Shannon Sharp1, Ruigang Wang1, 2* 1Department of Chemistry, Youngstown State University, OH 44555, US 2Materials Science and Engineering Program, Youngstown State University, OH 44555, US *rwang01@ysu.edu Keywords: CeO2, nanocatalysts, automotive exhaust clean-up, hydrothermal synthesis, transmission electron microscopy.
For the Ce0.5Zr0.5O2 solid solutions, the XRD lines are rather similar to those corresponding to pure ceria (face-centered cubic and fluorite structure, JCPDS 34-0394).
Phase Transformation From Fluorite To Pyrochlore Structure In Ce0.5zr0.5o2 During Thermal Treatments In Reduction Atmosphere.
The cation ordering along <110> is a distinguishing feature for the Ce2Zr2O7 pyrochlore structure compared to the fluorite structure CeO2 (Figure 7).
Reduction treatment of Ce0.5Zr0.5O2 causes a phase transformation, instead of phase separation, from fluoride to pyrochlore structure, suggesting nanoscale compositionally homogeneity of particles.

BELOGLAZOV 2b* 1 The Department of Chemistry of Baltic Federal University, 14 Alexander Nevsky, St., 236041 Kaliningrad, Russia 2 The Department of Physics of Dodoma University, P.O.
This offers the possibilities of providing synthesis of OC with a priori given structure.
The progress of aircraft since 1930, increase of capacity and working rate of machines caused the growing demand for metal structures and mechanisms.
The released H by dissolution of steel crystal structure bonded with dissolved O2 and its content in anolyte decreased, which permits photomertric determination of H evolved in anolyte.
Heating for 8 h at 470 K results in effective desorption of H, but 5-6 mL H2/100 g of manganese steel is enclosed in defects of crystal structure mainly as gas.

Introduction Zeolites are a large group of crystalline, porous materials with a broad diversity of structure, porosity and chemical composition.
This new structure can be interpreted as a foam structure.
By using a special type of synthesis mixtures (clear solutions with low viscosity) it is even possible to synthesis homogeneous zeolite layers on microcellular structures with a cell size in the µm-range [34].
References [1] http://www.iza-structure.org
Knözinger, Ullmann's Encyclopedia of Industrial Chemistry ed., Wiley-VCH, 2003

It implies disorientation of cellulose structure in the surface after modification with GMA.
These results were also reported [11] that GMA-grafted cellulose nanocrystals (CNC) showed a loss of CNC crystal structure after grafting which resulted in changes to the NC crystal structure and reduced peak intensity in GMA-grafted CNC.
The 20% GMA grafted cellulose sample experienced two stages of weight loss, where the first stage occurs at a temperature of 30-1000C caused by water loss in the grafting cellulose structure.
The second stage occurs at a temperature of 240-4800C, experiencing thermal degradation of the grafted cellulose structure.
XRD data shows that GMA grafted cellulose experienced a slight decrease in crystallinity which implies GMA only slightly affects the cellulose structure, although disorientation of the cellulose structure occurs.

This result indicates that the Cu-Mn based catalyst made by pure NaOH precipitator shows strong physical structure, whereas the sample made by KOH precipitator has weak structure.
The dried Cu-Mn sample precipitated by the pure KOH only consists of the hydrate basic copper sulfate, Cu4SO4(OH)6·H2O (JCPDS 20-0364) with a typical layer-structure[4].
It is interesting that the all dried samples were transferred to the spinel structured Cu1.5Mn1.5O4 after calcining at 550℃ (Fig.2-b) no matter what precipitator were used.
Conclusions Precipitating agents, KOH and NaOH, are important parameters to affect phase structure and texture of the Cu-Mn based WGS catalyst, especially the activity and stability of copper-manganese WGS catalyst.
This is a structure weak material and was transferred to low surface area, and low intensity of solid solution, Cu1.5Mn1.5O4 and then to microcrystalline Cu and MnO, which resulted in poor catalyst activity.