Magnetite humic acid-decorated MgAl layered double hydroxide and its application in procion red adsorption

被引：6
作者：
Ahmad, Nur [1 ,2 ]
Rohmatullaili
Wijaya, Alfan [2 ]
Lesbani, Aldes [2 ,3 ]
机构：
[1] Sriwijaya Univ, Grad Sch Math & Nat Sci, South Sumatera 30139, Indonesia
[2] Sriwijaya Univ, Res Ctr Inorgan Mat & Complexes, South Sumatera 30139, Indonesia
[3] Sriwijaya Univ, Grad Sch, Master Program Mat Sci, South Sumatera 30139, Indonesia
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2024年 / 684卷
关键词：
Magnetite; Humic acid; Layered double hydroxide; Procion red; Adsorption; AQUEOUS-SOLUTION; REMOVAL; GREEN; DYE;
D O I：
10.1016/j.colsurfa.2023.133042
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The magnetite humic acid-decorated MgAl layered double hydroxide (MgAl-MHA) was prepared for this investigation. After five adsorption-desorption cycles, MgAl-MHA showed remarkable reusability and an adsorption rate of about 57% without suffering appreciable loss. The MgAl-MHA's magnetic properties further improve the process of adsorption and less the possibility of the surface being harmed. The influence of temperature, initial concentration of procion red, contact time, pH value, and pHpzc on procion red removal percentage of the MgAl-MHA was investigated in detail. The pseudo-second-order kinetic model and the Langmuir isotherm model were well-fitted by the adsorption kinetics and equilibrium adsorption isotherm, respectively. The thermodynamics analysis indicated that procion red adsorption onto the MgAl-MHA was endothermic and spontaneous. Procion red has a maximum adsorption capacity of 192.037 mg/g at 303 K. In light of the findings mentioned above, MgAl-MHA presents a viable adsorbent option with high recyclability and cheap cost for the removal of procion red.
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页数：8
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