Microbial Removal of Heavy Metals from Contaminated Environments Using Metal-Resistant Indigenous Strains

Author:

Firincă Cristina12,Zamfir Lucian-Gabriel1ORCID,Constantin Mariana13ORCID,Răut Iuliana1,Capră Luiza1,Popa Diana1,Jinga Maria-Lorena1,Baroi Anda Maria1,Fierăscu Radu Claudiu1ORCID,Corneli Nicoleta Olguța4,Postolache Carmen2ORCID,Doni Mihaela1ORCID,Gurban Ana-Maria1ORCID,Jecu Luiza1,Șesan Tatiana Eugenia25

Affiliation:

1. Biotechnology and Bioanalysis Departments, National Institute of Research and Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independenței, 060021 Bucharest, Romania

2. Department of Botany and Microbiology, Faculty of Biology, University of Bucharest, 91–95 Spl. Independenței, 050095 Bucharest, Romania

3. Department of Pharmacy, Faculty of Pharmacy, University Titu Maiorescu of Bucharest, 040441 Bucharest, Romania

4. National Institute of Research and Development for Microbiology and Immunology—Cantacuzino, 103 Spl. Independenței, 050096 Bucharest, Romania

5. Field Crop Section, Academy of Agricultural and Forestry Sciences, Bd Mărăști 61, 011464 Bucharest, Romania

Abstract

Contamination of soil with heavy metals has become a matter of global importance due to its impact on agriculture, environmental integrity, and therefore human health and safety. Several microbial strains isolated from soil contaminated by long-term chemical and petrochemical activities were found to manifest various levels of tolerance to Cr, Pb, and Zn, out of which Bacillus marisflavi and Trichoderma longibrachiatum exhibited above-moderate tolerance. The concentrations of target heavy metals before and after bioremediation were determined using electrochemical screen-printed electrodes (SPE) modified with different nanomaterials. The morpho-structural SEM/EDX analyses confirmed the presence of metal ions on the surface of the cell, with metal uptake being mediated by biosorption with hydroxyl, carboxyl, and amino groups as per FTIR observations. T. longibrachiatum was observed to pose a higher bioremediation potential compared to B. marisflavi, removing 87% of Cr and 67% of Zn, respectively. Conversely, B. marisflavi removed 86% of Pb from the solution, compared to 48% by T. longibrachiatum. Therefore, the fungal strain T. longibrachiatum could represent a viable option for Cr and Zn bioremediation strategies, whereas the bacterial strain B. marisflavi may be used in Pb bioremediation applications.

Funder

Ministry of Research, Innovation, and Digitization

Publisher

MDPI AG

Subject

Pollution,Pharmacology,Toxicology

Reference153 articles.

1. Environmental pollution: Causes, effects, and the remedies;Chowdhary;Microorganisms for Sustainable Environment and Health,2020

2. Premature mortality due to air pollution in European cities: A health impact assessment;Khomenko;Lancet Planet. Health,2021

3. Soil and water pollution and human health: What should cardiologists worry about?;Hahad;Cardiovasc. Res.,2023

4. The effect of pollution on crime: Evidence from data on particulate matter and ozone;Burkhardt;J. Environ. Econ. Manag.,2019

5. Heavy Metal/Metalloid Contamination: Their Sources in Environment and Accumulation in Food Chain;Singh;Heavy Metal Toxicity: Environmental Concerns, Remediation and Opportunities,2023

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3