High Reusability of NiAl LDH/Biochar Composite in the Removal Methylene Blue from Aqueous Solution

Abstract

Ni/Al layered double hydroxide was used as a starting material for composite formation with biochar as a matrix. The materials were characterized using X-ray, FTIR, nitrogen adsorption-desorption, thermal, and morphology analyses. The NiAl LDH/Biochar material is then used as an adsorbent of methylene blue from an aqueous solution. The factor that was influencing adsorption such as pH, time, methylene blue concentration, and temperature adsorption was studied systematically. The regeneration of adsorbent was performed to know the stability of NiAl LDH/Biochar under several cycle adsorption processes. The results showed that NiAl LDH/Biochar has a specific diffraction peak at 11.63° and 22.30°. NiAl LDH/Biochar has more than ten-fold surface area properties (438,942 m2/g) than biochar (50.936 m2/g), and Ni/Al layered double hydroxide (92.682 m2/g). The methylene blue adsorption on NiAl LDH/Biochar follows a pseudo-second-order kinetic adsorption model and classify as physical adsorption. The high reusability properties were found for NiAl LDH/Biochar, which was largely different from biochar and Ni/Al layered double hydroxide.

The Ability of Composite Ni/Al-carbon based Material Toward Readsorption of Iron(II) in Aqueous Solution

“…In addition, LDH has been known for more than 150 years for its distinctive 2D at structure and has studied many of the most advanced functional materials used in materials, energy sciences and environmental (Cao et al, 2016) . LDH has many interesting properties, such as compositional exibil-ity (Taher et al, 2019) , anion exchange (Lesbani et al, 2021) , biocompatibility (Cao et al, 2016), high porosity and surface area (dos Santos Lins et al, 2019) . Such structure and characteristics give wide application of LDH as a catalyst (Hu et al, 2019b) , adsorbent (Lesbani et al, 2021) and ion exchanger (Gascho et al, 2019) .…”

“…LDH has many interesting properties, such as compositional exibil-ity (Taher et al, 2019) , anion exchange (Lesbani et al, 2021) , biocompatibility (Cao et al, 2016), high porosity and surface area (dos Santos Lins et al, 2019) . Such structure and characteristics give wide application of LDH as a catalyst (Hu et al, 2019b) , adsorbent (Lesbani et al, 2021) and ion exchanger (Gascho et al, 2019) .…”

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

“…Among these methods, adsorption is the most appropriate method and has many advantages for removing methylene blue from wastewater. This adsorption method has many advantages such as having high efficiency, easy to carry out, cost-effective alternative, simple method, easy to operate, produces unwanted by-products, and availability of large amount of adsorbent [13][14][15][16]. On the other hand, the important factor that has the greatest influence on the adsorption efficiency is represented by the adsorbent [17].…”

“…CO3, Cl − , SO4, RCO2, while x are typically between 0.2 and 0.4 [13,[24][25][26]. LDH has been widely used as a dye adsorbent because it has a high adsorption capacity and has a large surface area [14].…”

“…One of the materials that can be composited with LDH is a carbon-based material. Based on research by Lesbani et al [14], NiAl LDH composited with biochar and used to adsorb methylene blue (MB). Biochar from rice husk was used as a matrix for the formation of NiAl LDH/Biochar composites.…”