PL EN
Soft Ion Divalent Metals toward Adsorption on Zn/Al-POM Layered Double Hydroxide
Luna Silaen 1  
,   Elfita Elfita 2  
,   Risfidian Mohadi 3  
,   Normah Normah 4  
,   Novie Juleanti 4  
,   Neza Rahayu Palapa 4  
,   Aldes Lesbani 1, 4  
 
Więcej
Ukryj
1
Graduate School, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Jl. Padang Selasa No. 524 Ilir Barat 1, Palembang-South Sumatra, Indonesia
2
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sriwijaya, Jl. Palembang-Prabumulih, Km. 32, Ogan Ilir, South Sumatra, Indonesia
3
Department of Environmental Science, Graduate School, Sriwijaya University, Jl. Padang Selasa No. 524 Ilir Barat 1, Palembang-South Sumatra, Indonesia
4
Research Center of Inorganic Materials and Coordination Complexes, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Jl. Palembang Prabumulih Km.32 Ogan Ilir 30662, Indonesia
AUTOR DO KORESPONDENCJI
Aldes Lesbani   

Research Center of Inorganic Materials and Coordination Complexes, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Jl. Palembang Prabumulih Km.32 Ogan Ilir 30662, Indonesia
Data publikacji: 01-11-2021
 
J. Ecol. Eng. 2021; 22(10):109–120
 
SŁOWA KLUCZOWE
DZIEDZINY
 
STRESZCZENIE
Development of Zn/Al layered double hydroxide by intercalation using polyoxometalate (POM) K4[α-SiW12O40] to Zn/Al-POM was investigated. The success of the modification is evidenced by the XRD, FT-IR, and BET characterization data. XRD characterization showed an increase in the interlayer distance from 8.59 Å in Zn/Al LDHs to 10.26 Å in Zn/Al-POM. This success is also supported by the FT-IR data with the appearance of vibrations around 779-979 cm-1 which indicates the vibration of the polyoxometalate compound in Zn/Al-POM. Other supporting data in the form of BET also prove an increase in surface area from 1.968 m2/g in Zn/Al LDHs to 14.042 m2/g Zn/Al-POM. The ability of Zn/Al-POM as an adsorbent is proven through several parameters such as kinetics, isotherm, thermodynamics, and regeneration for Cd2+, Pb2+, Ni2+, and Co2+. Adsorption kinetics showed that Zn/Al-POM was more likely to follow the pseudo-second-order adsorption kinetics model for Cd2+, Pb2+, Ni2+, and Co2+. The results of determining the adsorption isotherm parameters of Zn/Al-POM tend to follow the Freundlich isotherm model with a maximum adsorption capacity of 74.13 mg/g on Pb2+. The regeneration process showed that Zn/Al-POM was more resistant than Zn/Al LDHs up to 3 cycles. It was proven that Zn/Al-POM was able to survive in the last cycle up to 69.19% on Ni2+.