Scholarlink

<p>The development of new technologies for extracting lithium from alternative sources, such as liquid brines, has become increasingly important. Among these technologies, lithium ion sieve adsorbents have garnered widespread attention due to their advantages, including simplicity of operation, low environmental impact, and recyclability. In this study, a crosslinked chitosan/H<sub>1.6</sub>Mn<sub>1.6</sub>O<sub>4</sub> (CTS/HMO) adsorbent with excellent adsorption performance for Li<sup>+</sup> in oilfield brine was prepared by coating crosslinked CTS onto lithium manganese oxides. The optimal conditions for Li<sup>+</sup> adsorption from brine using the crosslinked CTS/HMO adsorbent were found to be a temperature of 30&#xa0;°C and a pH of 12, with a maximum adsorption capacity of 31.7&#xa0;mg/g. After five adsorption–desorption cycles, the adsorbent's capacity decreased by only 3.15%, retaining an adsorption capacity of 30.7&#xa0;mg/g, demonstrating its strong cyclic stability. This study offers a novel approach for the efficient recovery of lithium resources from oilfield brines.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Preparation of a Cross-linked CTS Composite Ion Sieve and a Study of Lithium Adsorption from Oilfield Brines

  • 期刊论文

  • 发表日期：

    2025年7月7日

查看全文
  • Yuyu Gao,
  • Bingbing Chen,
  • Zhili Zhang

摘要

The development of new technologies for extracting lithium from alternative sources, such as liquid brines, has become increasingly important. Among these technologies, lithium ion sieve adsorbents have garnered widespread attention due to their advantages, including simplicity of operation, low environmental impact, and recyclability. In this study, a crosslinked chitosan/H1.6Mn1.6O4 (CTS/HMO) adsorbent with excellent adsorption performance for Li+ in oilfield brine was prepared by coating crosslinked CTS onto lithium manganese oxides. The optimal conditions for Li+ adsorption from brine using the crosslinked CTS/HMO adsorbent were found to be a temperature of 30 °C and a pH of 12, with a maximum adsorption capacity of 31.7 mg/g. After five adsorption–desorption cycles, the adsorbent's capacity decreased by only 3.15%, retaining an adsorption capacity of 30.7 mg/g, demonstrating its strong cyclic stability. This study offers a novel approach for the efficient recovery of lithium resources from oilfield brines.

Graphical Abstract