Adsorption of Cr(III) from an Aqueous Solution by Chitosan Beads Modified with Sodium Dodecyl Sulfate (SDS)

Autor:	Naoki Kano, Munkhpurev Bat-Amgalan, David Eva Vanessa Anak, Muhammad Nabil Md Sari, Zoltuya Khashbaatar, Heejoon Kim, Ganchimeg Yunden, Naoto Miyamoto
Rok vydání:	2021
Předmět:	Aqueous solution technology industry and agriculture Langmuir adsorption model chemistry.chemical_element Isothermal process Chitosan chemistry.chemical_compound symbols.namesake Chromium Adsorption chemistry X-ray photoelectron spectroscopy symbols Sodium dodecyl sulfate Nuclear chemistry
Zdroj:	Journal of Environmental Protection. 12:939-960
ISSN:	2152-2219 2152-2197
DOI:	10.4236/jep.2021.1211055
Popis:	This study is to prepare chitosan beads modified with sodium dodecyl sulfate (SDS) to effectively remove Cr(III) from an aqueous solution. The characterizations of SDS-chitosan by scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), Fourier transform-infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) proved the successful synthesis of the adsorbent. The adsorption of Cr(III) on the SDS material was investigated by varying experimental conditions such as pH, contact time and adsorbent dosage. The maximum adsorption capacity of SDS-chitosan for Cr(III) was estimated to be 3.42 mg⋅g-1. The results of adsorption kinetics and isothermal models show that the adsorption process conforms to the pseudo-second-order and Langmuir isotherm models, indicating that the adsorption is single-layer chemical adsorption. Thermodynamic analyses indicate that the adsorption of Cr(III) is an endothermic reaction. These results show that the new adsorbent has obvious application prospect to eliminate Cr(III).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4f0166bab0a3b931fc4ec638e84c42a2 https://doi.org/10.4236/jep.2021.1211055 Zobrazit plný text záznamu