MgAl-LDH/Biochar composites for methylene blue removal by adsorption

Meili, Lucas; Lins, Pollyanna Vanessa Santos; Zanta, Carmem Lúcia de Paiva e Silva; Soletti, João Inácio; Ribeiro, Laura; Dornelas, Camila Braga; Silva, Thiago Lopes da; Vieira, Melissa Gurgel Adeodato

doi:10.1016/j.clay.2018.10.012

Cited by 205 publications

(77 citation statements)

References 55 publications

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“…Furthermore, BC has recently used as supporting materials [21], [22]. In other hands, BC were reported used as an adsorbent to remove heavy metals [9], [23] and organic waste [20], [24], [25]. In present work, CuAl LDH used to load BC to enhance the effectivity to remove malachite green in wastewater.…”

Section: Several Treatments Methods Have Been Investigated Regarding Pmentioning

confidence: 90%

Preparation of copper aluminum-biochar composite as adsorbent of malachite green in aqueous solution

Palapa

Taher

Mohadi

et al. 2020

Preprint

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In this work, CuAl/Biochar (BC) composite was prepared by the coprecipitation method. The materials were applied to remove malachite green in aqueous solution. These materials were characterized using XRD, FTIR, BET and SEM-EDX analyses. The composite material was confirmed by X-ray diffractograms with reflection (002) at 24o and the appearance of new peaks at 1095 cm -1 . The BET result of CuAl/BC composite has larger surface area is 168 m 2 /g than 46 m 2 /g for LDH. The morphologies of composite materials show agglomeration and micro particle size. The result of the adsorption study indicated the composite material follows pseudo-second-order (PSO) and Langmuir isotherm models. The maximum adsorption capacity of malachite green using CuAl/BC uptake is 164.316 mg/g. The thermodynamic analysis indicates that the malachite green adsorption is spontaneous, endothermic. Regeneration study of adsorbent CuAl/BC composite shows after four times reused, it still has high removal efficiency at 89%.

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Section: Several Treatments Methods Have Been Investigated Regarding Pmentioning

confidence: 90%

Preparation of copper aluminum-biochar composite as adsorbent of malachite green in aqueous solution

Palapa

Taher

Mohadi

et al. 2020

Preprint

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“…Previously, Wang et al [21] reported that arsenic adsorption using Ni-Fe pine BC composite has a maximum adsorption capacity 1.56 g/kg and 4.38 g/kg, respectively [21]. Meili et al [19] reported the preparation of bone BC supported on Mg-Al LDH and used it on the removal of methylene blue. The maximum adsorption capacity attains 406 mg/g at 40 °C [19].…”

Section: Introductionmentioning

confidence: 99%

CuAl LDH/Rice Husk Biochar Composite for Enhanced Adsorptive Removal of Cationic Dye from Aqueous Solution

Palapa

Taher

Rahayu

et al. 2020

Bull. Chem. React. Eng. Catal.

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The preparation of CuAl LDH and biochar (BC) composite derived from rice husk and its application as a low-cost adsorbent for enhanced adsorptive removal of malachite green has been studied. The composite was prepared by a one-step coprecipitation method and characterized by X-ray Diffraction (XRD), Fourier Transform Infra Red (FTIR), Brunauer-Emmett-Teller (BET), and Scanning Electron Microscopy - Energy Dispersive X-ray (SEM−EDX). The result indicated that CuAl LDH was successfully incorporated with the biochar that evidenced by the broadening of XRD peak at 2θ = 24° and the appearance of a new peak at 1095 cm−1 on the FTIR spectra. The BET surface area analysis revealed that CuAl/BC composite exhibited a larger surface area (200.9 m2/g) that the original CuAl LDH (46.2 m2/g). Surface morphological changes also confirmed by SEM image, which showed more aggregated particles. The result of the adsorption study indicated the composite material was efficient in removing malachite green with Langmuir maximum adsorption capacity of CuAl/BC reaching 470.96 mg/g, which is higher than the original CuAl LDH 59.523 mg/g. The thermodynamic analysis suggested that the adsorption of malachite green occurs spontaneously (ΔG < 0 at all tested temperature) and endothermic nature. Moreover, the CuAl/BC composite showed strong potential as a low-cost adsorbent for cationic dye removal since it showed not only a high adsorption capacity but also good reusability. Copyright © 2020 BCREC Group. All rights reserved

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“…Methylene blue is difficult to degrade due to light stable and difficult to oxidize (Sharifpour et al, 2019). Several methods have been developed to reduce methylene blue from wastewater such as filtration, membrane process, and adsorption (Meili et al, 2019;Yan et al, 2013). Adsorption is the most suitable method to remove methylene blue from aqueous solution among these methods because simple way, easy to conduct, low cost operation, and also high efficiency (Abbasi and Asgari, 2018;Zubair et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Biochar has been used as stable adsorbent matrix and support to form composite with LDH for environmental applications. MgAl-LDH/Biochar was used as adsorbent of methylene blue with removal >95% (Meili et al, 2019). MgFe-LDH was modified with biochar to form adsorbent for nitrate removal.…”

Section: Introductionmentioning

confidence: 99%

Efficient Removal of Methylene Blue by Adsorption Using Composite Based Ca/Al Layered Double Hydroxide-Biochar

2020

Global NEST: The International Journal

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<p>Composite based Ca/Al layered double hydroxide and biochar was prepared using mixing coprecipitation method at pH 10. Composite and the starting materials was characterized using X-ray, FTIR, BET, thermal, and SEM-EDX analyses. Furthermore, composite was used as adsorbent of methylene blue from aqueous solution. Several factors that influencing the adsorption process was investigated such as adsorption time, initial concentration, and temperature adsorption. The performance of composite as adsorbent was evaluated by reusability process. The results showed that composite has diffraction peak at 9.82, 17.99, 19.86, 20.55, 29.32, 30.95, 32.65, 36.61, 37.00, 43.49, 47.15, 55.12, and 56.12 deg, which was based on diffraction of Ca/Al layered double hydroxide and biochar as starting materials. The surface area of composite was 158.291 m2/g and largely higher than starting materials. The morphology of composite also shows regularity shape than Ca/Al layered double hydroxide and biochar. Adsorption of methylene blue on composite showed that higher adsorption capacity (32.535 mg/g) than starting materials. The reusability of adsorbent showed that composite can be used several times ad adsorbent without loss adsorption capacity and these phenomena indicated composite is excellent material to remove dye from aqueous solution.</p>

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MgAl-LDH/Biochar composites for methylene blue removal by adsorption

Cited by 205 publications

References 55 publications

Preparation of copper aluminum-biochar composite as adsorbent of malachite green in aqueous solution

Preparation of copper aluminum-biochar composite as adsorbent of malachite green in aqueous solution

CuAl LDH/Rice Husk Biochar Composite for Enhanced Adsorptive Removal of Cationic Dye from Aqueous Solution

Efficient Removal of Methylene Blue by Adsorption Using Composite Based Ca/Al Layered Double Hydroxide-Biochar

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