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

Palapa, Neza Rahayu; Taher, Tarmizi; Mohadi, Risfidian; Rachmat, Addy; Lesbani, Aldes

doi:10.21203/rs.3.rs-18799/v1

Cited by 7 publications

(10 citation statements)

References 25 publications

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“…This adsorption process obtained a higher maximum capacity at 323 K of 406.47 mg/g and achieved equilibrium up to 20 minutes with an adsorption ability reaching 95% at pH 12. As similarly reported by Palapa et al [11] using a composite of CuAl-BC for the adsorption of Malachite green (MG) reaching equilibrium at 40 minutes with an adsorbed concentration of 108.96 mg/L. Among all these literature research have been studied, the adsorption of the dyes have been studied widely, but in this research, the preparation of Ca/Al LDH and its composite with BC to form Ca/Al-Biochar is used to remove the mixture cationic dyes in aqueous solution to compare the competitive ones to adsorb more into Ca/Al-Biochar.…”

Section: Introductionsupporting

confidence: 79%

“…Several adsorbents have been used for the removal of dyes from wastewater [8]. Adsorbents that can be used to adsorb dyes from wastewater include activated carbon, algae, alumina-MOF, sawdust modification, kaolin, bentonite, and layered double hydroxide (LDH) [9][10][11]. However, LDH is a favored adsorbent due to its low cost, high stability, low toxicity, reusability, and facile synthesis.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Ca/Al-Layered Double Hydroxides/Biochar Composite with High Adsorption Capacity and Selectivity toward Cationic Dyes in Aqueous

Mohadi

Palapa

Lesbani

2021

Bull. Chem. React. Eng. Catal.

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Widely reports have evaluated the use of biochar (BC) composites to layered double hydroxide (LDH) to adsorb dyes from wastewater. However, its applicability for adsorbing a mixture of cationic dyes such as Malachite green (MG), Rodhamine-B (Rh-B), and Methylene blue (MB), which causes carcinogenic and mutagenic effects on aquatic life, has not been studied. In this work, we compared the performance of CaAl-LDH/BC adsorbent with or without the addition of BC in the adsorption of cationic dyes. The adsorption study was prepared in a batch system using various temperatures, concentrations, and also contact time. The results of the characterization of Ca/Al-Biochar composite showed the unique diffraction of XRD pattern, and also showed two characteristics of starting materials. Surface area analysis by BET method showed Ca/Al-Biochar composite has a higher surface area than starting material. The results of the adsorption study of MG showed that Ca/Al-Biochar follows the pseudo-second-order kinetic model. The adsorption capacity of MG on Ca/Al-Biochar was up to 71.429 mg/g and shows selectivity toward MG in an aqueous solution. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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Section: Introductionsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Preparation of Ca/Al-Layered Double Hydroxides/Biochar Composite with High Adsorption Capacity and Selectivity toward Cationic Dyes in Aqueous

Mohadi

Palapa

Lesbani

2021

Bull. Chem. React. Eng. Catal.

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“…The co-precipitation method is the most common method for synthesize LDHs (Chang et al, 2005). Synthesis of LDH using co-precipitation has resolved as an appealing method because produces high yield with high crystallinity (Palapa et al, 2020;Starukh and Levytska, 2019).…”

Section: Introductionmentioning

confidence: 99%

Structural Stability of Ni/Al Layered Double Hydroxide Supported on Graphite and Biochar Toward Adorption of Congo Red

Siregar

Palapa

Wijaya

et al. 2021

sci. technol. indones.

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In this research, Ni/Al layered double hydroxide (LDH) was modified by using co-precipitation method to generate Ni/Al-graphite (Ni/Al-GF) and Ni/Al-biochar (Ni/Al-BC). The adsorbents were applied to remove Congo Red from aqueous solution. The obtained samples were characterized by using XRD, FTIR, BET and TG-DTA. The XRD diffraction pattern of Ni/Al LDH, Ni/Al-GF, and Ni/Al-BC presented the formation of composite with decreasing crystallinity. The surface area modified LDHs was higher than the pristine materials, which was obtained 15.106 m2/g, 21.595 m2/g and 438.942 m2/g for Ni/Al-LDH, Ni/Al-GF, Ni/Al-BC respectively. The adsorption of Congo Red on the materials was tested at diferent parameters and the results exhibited that Congo Red adsorption on LDHs were pseudo-first-order (PFO) kinetic, spontaneous, endothermic and followed Langmuir model. The adsorbents removed Congo Red by high performance stability with adsorption capacity was 116.297 mg/g for Ni/Al-GF and 312.500 mg/g for Ni/Al-BC. These adsorption capacity was higher than the pristine LDH (61.728 mg/g). The regeneration process which carried out for five cycles showed that Ni/Al-GF and Ni/Al-BC have stable structures as reuse adsorbents for Congo Red from aqueous solution.

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“…On the other hand, repeated use of LDH is ineffective because the structure of LDH will be exfoliated [27]. Therefore, it is necessary to improve the structure of LDH by modifying LDH.…”

Section: Introductionmentioning

confidence: 99%

Size Selectivity of Anionic and Cationic Dyes Using LDH Modified Adsorbent with Low-Cost Rambutan Peel to Hydrochar

Normah

Juleanti

Siregar

et al. 2021

Bull. Chem. React. Eng. Catal.

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Modification of the layered double hydroxide of CuAl-LDHs by composite with hydrochar (HC) to form CuAl-HC LDH. Material characterization by XRD, FT-IR and SEM analysis was used to prove the success of the modification. The characterization of XRD and FT-IR spectra showed similarities to pure LDH and HC. Selectivity experiments were carried out by mixing malachite green, methylene blue, rhodamine-B, methyl orange, and methyl red to produce the most suitable methyl blue dye for CuAl-LDH, HC and CuAl-HC adsorbents. The effectiveness of CuAl-HC LDH as adsorbent on methylene blue adsorption was tested through several influences such as adsorption isotherm, thermodynamics, and adsorbent regeneration. CuAl-HC LDH adsorption isotherm data shows that the adsorption process tends to follow the Langmuir isotherm model with a maximum adsorption capacity of 175.439 mg/g with a threefold increase compared to pure LDH. The effectiveness of the adsorbent for repeated use reaches five cycles as evidenced by the maximum capacity regeneration data reaching 82.2%, 79.3%, 77.9%, 76.1%, and 75.8%. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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

Cited by 7 publications

References 25 publications

Preparation of Ca/Al-Layered Double Hydroxides/Biochar Composite with High Adsorption Capacity and Selectivity toward Cationic Dyes in Aqueous

Preparation of Ca/Al-Layered Double Hydroxides/Biochar Composite with High Adsorption Capacity and Selectivity toward Cationic Dyes in Aqueous

Structural Stability of Ni/Al Layered Double Hydroxide Supported on Graphite and Biochar Toward Adorption of Congo Red

Size Selectivity of Anionic and Cationic Dyes Using LDH Modified Adsorbent with Low-Cost Rambutan Peel to Hydrochar

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