Competitive Removal of Cationic Dye Using NiAl-LDH Modified with Hydrochar

Ecological Engineering & Environmental Technology

Tarmizi Taher¹  Risfidian Mohadi²  Aldi Priambodo²  Fitri Suryani Arsyad³  Neza Rahayu Palapa⁴  Aldes Lesbani⁴  Normah Normah⁵ 

[1] Departement of Environmental Engineering, Faculty of Mathematics and Natural Sciences, Insitut Teknologi Sumatera, Jl. Terusan Ryacudu, Way Hui, Jati Agung, Lampung 35365, Indonesia;Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Jl. Palembang-Prabumulih, Km. 32, Ogan Ilir, South Sumatra, Indonesia;Department of Physics, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Jl. Palembang-Prabumulih, Km. 32, Ogan Ilir, South Sumatra, Indonesia;Graduate School of Mathematics and Natural Sciences, Sriwijaya University, Jl. Padang Selasa No. 524 Ilir Barat 1, Palembang-South Sumatra, Indonesia;Master Programme Graduate School of Mathematics and Natural Sciences, Sriwijaya University, Jl. Padang Selasa No. 524 Ilir Barat 1, Palembang-South Sumatra, Indonesia;

关键词: layered double hydroxide;    composite;    hydrochar;    cationic dye;    stability;    selectivity;   

DOI  :  10.12912/27197050/138120

来源: DOAJ

【 摘 要 】

In this study, NiAl-LDH was modified with hydrochar using the NiAl-Hydrochar composite coprecipitation method. Materials were characterized by XRD and FT-IR analysis. XRD diffractogram and FT-IR spectra show that the NiAl-Hydrochar composite material has the characteristics of the precursors. NiAl- Hydrochar composite materials have a large adsorption capacity to adsorb cationic dyes. The adsorption follows the Langmuir adsorption isotherm model with the maximum capacity (Qmax) of the NiAl-Hydrochar composite material reaching 256.410 mg/g for malachite green and the adsorption process takes place spontaneously and endothermically. The regeneration process of NiAl-Hydrochar composites was more stable and the decrease was not significant (>70%). The selectivity of the dye mixture showed that the adsorbent was more selective for malachite green dye compared to methylene blue and rhodamine-B.

【 授权许可】

Unknown