Biological recycling of critical metals from spent hydrodesulfurization catalysts: a review

IF 20.4 2区环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Environmental Chemistry Letters Pub Date : 2025-06-03 DOI:10.1007/s10311-025-01849-0

Rajiv Ranjan Srivastava, Nimra Ilyas, Siti Khodijah Chaerun, Fredrik Engström, Andreas Lennartsson, Lena Sundqvist Öqvist, Sadia Ilyas

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引用次数: 0

Abstract

Large quantities of spent catalysts containing strategic metals such as molybdenum, nickel, cobalt, and vanadium, are lost after hydrodesulfurization of petroleum. Here, we review the recycling of those metals using bacteria and fungi. We analyze bioleaching approaches, utilizing both chemoautotrophic and heterotrophic microorganisms, and examine how various operational parameters influence the extraction process. The formation of soluble species in the metabolic lixiviant derived from high-sulfur feedstocks creates optimal conditions for the activity of sulfur-oxidizing microorganisms, such as Acidithiobacillus thiooxidans. In contrast, bioleaching with Penicillium simplicissimum at a pH range of 4–7 promotes the formation of stable anionic molybdate, which is advantageous for the subsequent recovery process.

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废加氢脱硫催化剂中关键金属的生物回收研究进展

含钼、镍、钴、钒等重要金属的废催化剂在石油加氢脱硫后大量流失。在这里，我们回顾了利用细菌和真菌回收这些金属。我们分析了生物浸出方法，利用化学自养和异养微生物，并研究了不同的操作参数如何影响提取过程。在高硫原料衍生的代谢性溶剂中，可溶性物质的形成为硫氧化微生物（如酸性硫氧化硫杆菌）的活性创造了最佳条件。而单纯青霉在4-7的pH范围内进行生物浸出，有利于形成稳定的阴离子钼酸盐，有利于后续的回收过程。

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来源期刊

Environmental Chemistry Letters 环境科学-工程：环境

CiteScore

32.00

自引率

7.00%

发文量

175

审稿时长

2 months

期刊介绍： Environmental Chemistry Letters explores the intersections of geology, chemistry, physics, and biology. Published articles are of paramount importance to the examination of both natural and engineered environments. The journal features original and review articles of exceptional significance, encompassing topics such as the characterization of natural and impacted environments, the behavior, prevention, treatment, and control of mineral, organic, and radioactive pollutants. It also delves into interfacial studies involving diverse media like soil, sediment, water, air, organisms, and food. Additionally, the journal covers green chemistry, environmentally friendly synthetic pathways, alternative fuels, ecotoxicology, risk assessment, environmental processes and modeling, environmental technologies, remediation and control, and environmental analytical chemistry using biomolecular tools and tracers.