Synthesis of Mg-Al layered double hydroxides by electrocoagulation

Molano-Mendoza, Marena; Donneys-Victoria, Dayana; Marriaga-Cabrales, Nilson; Mueses, Miguel Ángel; Puma, Gianluca Li; Machuca-Martínez, Fiderman

doi:10.1016/j.mex.2018.07.019

Cited by 25 publications

(20 citation statements)

References 18 publications

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“…The experimental procedure is described details by Molano-Mendoza [1]. Here the protocol is provided for nitrogen experiments, giving details that were omitted from previous research article.…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

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Dataset on infrared spectroscopy and X-ray diffraction patterns of Mg–Al layered double hydroxides by the electrocoagulation technique

et al. 2019

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The XRD profiles and FTIR analysis of sludge aggregates, Mg–Al layered double hydroxides, produced during electrocoagulation processes are presented. The data describes the composition of materials (LDH) produced at different operations conditions (atmospheric conditions and Mg2+/Al3+ ratio). The data show the diffraction peaks of (003), (006), (018) and (110) crystal planes for hydrotalcite structure.

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Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

“…The electrochemical method for the synthesis of Layered Double Hydroxides (LDHs) by electrocoagulation is used as an alternative procedure [1]. The LDHs are a class of anionic clays which have observed increasing attention due to their applications in many research areas [2].…”

Section: Datamentioning

confidence: 99%

Dataset on infrared spectroscopy and X-ray diffraction patterns of Mg–Al layered double hydroxides by the electrocoagulation technique

et al. 2019

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“…The HT synthesized were characterized by X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR), the FTIR spectra were recorded with a JASCO FT/IR-4100 brand equipment, in a range between 500 and 4000 cm −1 , the X-ray diffraction pattern (XRD) was performed with an analytical diffractometer called X'pert PRO - PANalytical at conditions of 45 kV, 40 mA, monochromatic CuKα radiation at a λ = 0.1542 nm and in a 2θ range of 4°–90° [1].…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

“…The LDH materials was prepared by Electrocoagulation according to methodology reported by Molano et al. [1], Fig. 1, Fig.…”

Section: Datamentioning

confidence: 99%

Data on energy consumption in the production of layered double hydroxides

2019

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Electrocoagulation consists of the in-situ generation of the coagulant by the electro dissolution of sacrificial electrodes (Mg and Al). This technique, besides being normally used for water treatment, can be used to synthesize Layered Double Hydroxides (LDH) or Hydrotalcites (HT) such as green rust, MgAlCl/LDH, and other oxides as Magnetite. The HT has a high tendency for water in the interlayer to be replaced by anions, these exchange characteristics generate a high interest in the fields of drug administration, photodegradation, catalyst supports, supercapacitors, and water oxidation. There are several routes of synthesis for these compounds such as co-precipitation, hydrolysis of urea, hydrothermal treatment and a novel route by electrocoagulation (EC).This work discloses the data of the energy consumption at laboratory-scale production in the synthesis of hydrotalcite (HT) or Layered Double Hydroxides (LDH) by electrocoagulation, the values obtained through these experiments are intended to provide support due to the lack of information on the energy consumption of this novel production method. Aluminum and AZ31 electrodes were used as a cations source during two- and four-hours operation, at 50 °C with 5 mA cm−2 of current density, and 5 minutes of polarity change for Aluminum and 8 minutes for AZ31 (Magnesium alloy).

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“…In addition, urea decomposition by hydrolyzing urea using water solvent creates an alkaline environment, leading to well-crystallized LDHs. Moreover, this combination considered as a green method with lowcost and high efficiency [41,42]. Thus, in present study, we used solutions of aluminum and magnesium, under the urea decomposition and hydrothermal treatment to synthesis Mg/Al LDHs.…”

Section: −mentioning

confidence: 99%

Process Optimization Studies of Congo Red Dye Adsorption onto Magnesium Aluminium Layered Double Hydroxide Using Response Surface Methodology

Lam¹,

Dao²,

Nguyen³

et al. 2020

Pol. J. Environ. Stud.

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Textile and dyeing industry have a large production network and rapid growth. However, the use of large quantities of industrial dyes and untreated wastewater pollutes the soil and water environment and directly affects human, animal and plant health. Therefore, the most important thing is to develop new adsorbents with high removal efficiency and fast separation rate to handle a large amount of waste. In this study, Mg/Al LDHs materials were successfully synthesized by hydrothermal method. The SEM images, which can be observed from the low-magnification, show that Mg/Al LDHs have morphology similar to hierarchical flower. In addition, strong intensities in XRD result indicates the high purity and good crystallization in LDH-type materials. Three factors affecting Congo red (CR) adsorption capacity include: Influence of CR solution concentration, effect of solution pH and reaction time conducted by response surface method (RSM) to find the optimal conditions for CR removal. The experimental results showed that at CR concentration 52.32 mg/L, the reaction time of 118 minutes and pH 5.8 obtained the

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Synthesis of Mg-Al layered double hydroxides by electrocoagulation

Abstract: Graphical abstract

Cited by 25 publications

References 18 publications

Dataset on infrared spectroscopy and X-ray diffraction patterns of Mg–Al layered double hydroxides by the electrocoagulation technique

Dataset on infrared spectroscopy and X-ray diffraction patterns of Mg–Al layered double hydroxides by the electrocoagulation technique

Data on energy consumption in the production of layered double hydroxides

Process Optimization Studies of Congo Red Dye Adsorption onto Magnesium Aluminium Layered Double Hydroxide Using Response Surface Methodology

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