红球菌(Rhodococcus erythropolis ATCC 4277)对不同金属的抗性及其在废物生物采矿中的潜在用途。

IF 3.5 3区 生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Bioprocess and Biosystems Engineering Pub Date : 2024-09-01 Epub Date: 2024-06-18 DOI:10.1007/s00449-024-03048-7
Igor Yannick das Neves Vasconcellos Brandão, Pedro Henrique Barboza de Souza Silva, Tayna Vale Castori, Yasmim Tavares de Souza, Ricardo Gabbay de Souza, Aline Fontana Batista, Sergio Luis Graciano Petroni, Talita Corrêa Nazareth Zanutto, Claudia Barbosa Ladeira de Campos, Danielle Maass
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引用次数: 0

摘要

红球菌(Rhodococcus erythropolis)以其显著的抗性特征而闻名,可用于生物修复等多种生物技术过程。然而,人们对该菌株对不同金属的抗性知之甚少。本研究试图调查红球菌(R. erythropolis ATCC 4277)对黄铜矿和电子垃圾残留物的抗性,以验证其对这些残留物中金属的抗性及其在生物采矿过程中的潜在用途。这些测试是在一个搅拌槽生物反应器中进行的,在 24ºC 和 pH 值为 7.0 的条件下进行了 48 小时,使用的总体积为 2.0 升,其中含有 2.5%(v/v)的细菌预培养物。黄铜矿的矿浆密度为 5%(重量比),搅拌和氧气流速分别设定为 250 rpm 和 1.5 LO2 min-1。另一方面,我们利用了计算机印刷电路板废料(WPCB),其纸浆密度为 10%(重量比),搅拌速度为 400 rpm,氧气流速为 3.0 LO2 min-1。发酵后的金属浓度分析表明,R. erythropolis ATCC 4277 能够浸出黄铜矿残渣中约 38% 的铜(约 24 小时),以及 WPCB 中 49.5% 的铁、42.3% 的镍、27.4% 的铝和 15% 的铜(约 24 小时)。此外,该菌株在含有这些金属的环境中存活良好,这表明该细菌有潜力用于废物生物采矿过程以及含有这些金属的其他过程。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Rhodococcus erythropolis ATCC 4277 behavior against different metals and its potential use in waste biomining.

Rhodococcus erythropolis bacterium is known for its remarkable resistance characteristics that can be useful in several biotechnological processes, such as bioremediation. However, there is scarce knowledge concerning the behavior of this strain against different metals. This study sought to investigate the behavior of R. erythropolis ATCC 4277 against the residue of chalcopyrite and e-waste to verify both resistive capacities to the metals present in these residues and their potential use for biomining processes. These tests were carried out in a stirred tank bioreactor for 48 h, at 24ºC, pH 7.0, using a total volume of 2.0 L containing 2.5% (v/v) of a bacterial pre-culture. The pulp density of chalcopyrite was 5% (w/w), and agitation and oxygen flow rates were set to 250 rpm and 1.5 LO2 min-1, respectively. On the other hand, we utilized a waste of computer printed circuit board (WPCB) with a pulp density of 10% (w/w), agitation at 400 rpm, and an oxygen flow rate of 3.0 LO2 min-1. Metal concentration analyses post-fermentation showed that R. erythropolis ATCC 4277 was able to leach about 38% of the Cu present in the chalcopyrite residue (in ~ 24 h), and 49.5% of Fe, 42.3% of Ni, 27.4% of Al, and 15% Cu present in WPCB (in ~ 24 h). In addition, the strain survived well in the environment containing such metals, demonstrating the potential of using this bacterium for waste biomining processes as well as in other processes with these metals.

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来源期刊
Bioprocess and Biosystems Engineering
Bioprocess and Biosystems Engineering 工程技术-工程:化工
CiteScore
7.90
自引率
2.60%
发文量
147
审稿时长
2.6 months
期刊介绍: Bioprocess and Biosystems Engineering provides an international peer-reviewed forum to facilitate the discussion between engineering and biological science to find efficient solutions in the development and improvement of bioprocesses. The aim of the journal is to focus more attention on the multidisciplinary approaches for integrative bioprocess design. Of special interest are the rational manipulation of biosystems through metabolic engineering techniques to provide new biocatalysts as well as the model based design of bioprocesses (up-stream processing, bioreactor operation and downstream processing) that will lead to new and sustainable production processes. Contributions are targeted at new approaches for rational and evolutive design of cellular systems by taking into account the environment and constraints of technical production processes, integration of recombinant technology and process design, as well as new hybrid intersections such as bioinformatics and process systems engineering. Manuscripts concerning the design, simulation, experimental validation, control, and economic as well as ecological evaluation of novel processes using biosystems or parts thereof (e.g., enzymes, microorganisms, mammalian cells, plant cells, or tissue), their related products, or technical devices are also encouraged. The Editors will consider papers for publication based on novelty, their impact on biotechnological production and their contribution to the advancement of bioprocess and biosystems engineering science. Submission of papers dealing with routine aspects of bioprocess engineering (e.g., routine application of established methodologies, and description of established equipment) are discouraged.
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