کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5150405 | 1498235 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanochemical synthesis of silica-lithium manganese oxide composite for the efficient recovery of lithium ions from seawater
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, to prevent manganese dissolution from an acid treatment during the extraction of lithium ions (Li+), silica (SiO2) was mixed mechanically with lithium manganese oxide (Li1.33Mn1.67O4, LMO) by a high-energy milling technique followed by calcination. The milling process ensured high-level chemical homogeneity of metal oxides. The amorphous SiO2 imparted stability to the LMO spinel structure and reduced the level of Mn dissolution during the extraction of Li+ using an acid. X-ray diffraction and thermogravimetric analysis confirmed that the amorphous SiO2 was well mixed in the framework of LMO. The Li-Si-Mn-O composite was used as an efficient adsorbent for the recovery of Li+ from lithium spiked seawater with an adsorption capacity of 43.23 mg gâ 1. The adsorption process fitted the Langmuir isotherm well with a correlation coefficient of 0.9831. The kinetic study showed that the adsorption behavior followed pseudo-second-order kinetics. The adsorbent exhibited excellent selectivity towards Li+, even in the presence of competitive cations with a higher concentration than Li+.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 308, 1 October 2017, Pages 77-83
Journal: Solid State Ionics - Volume 308, 1 October 2017, Pages 77-83
نویسندگان
Taegong Ryu, Arunkumar Rengaraj, Yuvaraj Haldorai, Junho Shin, Sang Rak Choe, Go-Woon Lee, Seung-Kyu Hwang, Young-Kyu Han, Byoung-Gyu Kim, Yun Suk Huh, Kang-Sup Chung,