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

IF 2.8 4区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

General Relativity and Gravitation Pub Date : 2025-07-07 DOI:10.1007/s10230-025-01065-w

Yuyu Gao, Bingbing Chen, Zhili Zhang

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引用次数: 0

Abstract

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_1.6Mn_1.6O₄ (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

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交联CTS复合离子筛的制备及对油田卤水中锂的吸附研究

从液体盐水等替代资源中提取锂的新技术的发展变得越来越重要。在这些技术中，锂离子筛吸附剂因其操作简单、对环境影响小、可回收利用等优点而受到广泛关注。本研究通过在锂锰氧化物表面涂覆交联壳聚糖/H1.6Mn1.6O4 (CTS/HMO)，制备了对油田卤水中Li+具有良好吸附性能的交联壳聚糖/HMO吸附剂。交联CTS/HMO吸附剂吸附盐水中Li+的最佳条件为温度为30℃，pH为12，最大吸附量为31.7 mg/g。经过5次吸附-解吸循环后，吸附剂的吸附容量仅下降3.15%，仍保持30.7 mg/g的吸附容量，表现出较强的循环稳定性。本研究为油田卤水中锂资源的高效回收提供了一条新途径。图形抽象

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来源期刊

General Relativity and Gravitation 物理-天文与天体物理

CiteScore

4.60

自引率

3.60%

发文量

136

审稿时长

3 months

期刊介绍： General Relativity and Gravitation is a journal devoted to all aspects of modern gravitational science, and published under the auspices of the International Society on General Relativity and Gravitation. It welcomes in particular original articles on the following topics of current research: Analytical general relativity, including its interface with geometrical analysis Numerical relativity Theoretical and observational cosmology Relativistic astrophysics Gravitational waves: data analysis, astrophysical sources and detector science Extensions of general relativity Supergravity Gravitational aspects of string theory and its extensions Quantum gravity: canonical approaches, in particular loop quantum gravity, and path integral approaches, in particular spin foams, Regge calculus and dynamical triangulations Quantum field theory in curved spacetime Non-commutative geometry and gravitation Experimental gravity, in particular tests of general relativity The journal publishes articles on all theoretical and experimental aspects of modern general relativity and gravitation, as well as book reviews and historical articles of special interest.