Benzyl-modified hydrophobic cellulose microspheres for rhenium purification from molybdenum system

IF 4.8 2区工程技术 Q1 MATERIALS SCIENCE, PAPER & WOOD

Cellulose Pub Date : 2025-07-15 DOI:10.1007/s10570-025-06662-0

Zhaoheng Zhu, Wei Wang, Ze Wu, Yukun Huang, Long Wang, Jiang Liu

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引用次数: 0

Abstract

Rhenium (Re) is a critical rare and precious element in modern industry, often associated with molybdenite deposits in nature. The pressurized ammonia leaching method for processing molybdenum (Mo) concentrates enables an efficient extraction of both Mo and Re; however, their separation in an alkaline environment is a challenging task. This study presents a hydrophobic benzyl-modified cellulose microsphere (BACM) adsorbent for the adsorption and separation of Re and Mo. As BACM is derived from cellulose-based materials, it inherits renewability, environmental friendliness, and alkaline suitability, enhancing its adsorption efficiency. By virtue of the anti-Hofmeister effect, the BACM adsorbent exhibits enhanced adsorption performance, efficiently separating Re(VII) and Mo(VI) across a pH range of 6–12 with a maximum separation factor of 1.5 × 10³ and an adsorption capacity for Re(VII) as high as 99.97 mg/g. The adsorption mechanism involves specific anion trapping and ion exchange within the hydrophobic microenvironment. Column adsorption experiments confirm that BACM can effectively separate and enrich Re(VII) and Mo(VI) from real Mo concentrate alkaline leach solutions, demonstrating its applicability in this context.

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苯改性疏水纤维素微球纯化钼体系铼

铼（Re）是现代工业中重要的稀有贵重元素，在自然界中常与辉钼矿有关。采用加压氨浸法处理钼精矿，可以有效地提取钼和稀土；然而，在碱性环境中分离它们是一项具有挑战性的任务。本研究提出了一种疏水苄基改性纤维素微球（BACM）吸附剂，用于吸附和分离稀土和钼。由于BACM来源于纤维素基材料，因此具有可再生性、环境友好性和碱性适应性，提高了吸附效率。通过抗hofmeister效应，BACM吸附剂在6 ~ 12的pH范围内对Re（VII）和Mo（VI）进行了高效的吸附，最大分离系数为1.5 × 103，对Re（VII）的吸附量高达99.97 mg/g。吸附机制涉及疏水微环境中特定的阴离子捕获和离子交换。柱吸附实验证实BACM能有效分离富集真实Mo精矿碱性浸出液中的Re（VII）和Mo(VI)，说明BACM在该环境下的适用性。

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来源期刊

Cellulose 工程技术-材料科学：纺织

CiteScore

10.10

自引率

10.50%

发文量

580

审稿时长

3-8 weeks

期刊介绍： Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.