Fungal-bacterial biofilm mediated heavy metal rhizo-remediation

Henagamage, A P; Peries, Colombage Maheshika; Seneviratne, G.

doi:10.1007/s11274-022-03267-8

Cited by 10 publications

(4 citation statements)

References 60 publications

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“…In a 10% electrolyte solution, the concentrations of each heavy metal, namely Co, Cr, Mo, Re, and Ni, were 1031, 453, 3.5, 255, and 3908 mg/L, respectively. These three culture media can comprehensively cover the growth requirements of different types of microorganisms, facilitating the effective and comprehensive screening of target microorganisms that can tolerate electrolytes ( Talukdar et al, 2020 ; Henagamage et al, 2022 ).…”

Section: Methodsmentioning

confidence: 99%

Screening and performance optimization of fungi for heavy metal adsorption in electrolytes

Yang,

Liu,

Zhou

et al. 2024

Front. Microbiol.

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The resource recovery and reuse of precious metal-laden wastewater is widely recognized as crucial for sustainable development. Superalloy electrolytes, produced through the electrolysis of superalloy scrap, contain significant quantities of precious metal ions, thereby possessing substantial potential for recovery value. This study first explores the feasibility of utilizing fungi to treat Superalloy electrolytes. Five fungi resistant to high concentrations of heavy metals in electrolytes (mainly containing Co, Cr, Mo, Re, and Ni) were screened from the soil of a mining area to evaluate their adsorption characteristics. All five fungi were identified by ITS sequencing, and among them, Paecilomyces lilacinus showed the best adsorption performance for the five heavy metals; therefore, we conducted further research on its adsorption characteristics. The best adsorption effect of Co, Cr, Mo, Re, and Ni was 37.09, 64.41, 47.87, 41.59, and 25.38%, respectively, under the conditions of pH 5, time 1 h, dosage 26.67 g/L, temperature 25–30°C, and an initial metal concentration that was diluted fivefold in the electrolyte. The biosorption of Co, Mo, Re, and Ni was better matched by the Langmuir model than by the Freundlich model, while Cr displayed the opposite pattern, showing that the adsorption process of P. lilacinus for the five heavy metals is not a single adsorption mechanism, but may involve a multi-step adsorption process. The kinetics study showed that the quasi-second-order model fitted better than the quasi-first-order model, indicating that chemical adsorption was the main adsorption process of the five heavy metals in P. lilacinus. Fourier transform infrared spectroscopy revealed that the relevant active groups, i.e., hydroxyl (-OH), amino (-NH2), amide (- CONH2), carbonyl (-C = O), carboxyl (-COOH), and phosphate (PO43–), participated in the adsorption process. This study emphasized the potential application of P. lilacinus in the treatment of industrial wastewater with extremely complex background values.

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Section: Methodsmentioning

confidence: 99%

Screening and performance optimization of fungi for heavy metal adsorption in electrolytes

Yang,

Liu,

Zhou

et al. 2024

Front. Microbiol.

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“…The aforementioned stressors enhance the efficacy of metal sequestration in the bioremediation of heavy metals [ 169 ]. The formation of biofilms is a consequence of the association of one or more species, and the composition and configuration of EPS can be influenced by environmental factors [ 170 ]. EPS contains a significant amount of anionic charge.…”

Section: Bioremediation: Interaction Of Microorganisms With Hmsmentioning

confidence: 99%

Toxicity of Heavy Metals and Recent Advances in Their Removal: A Review

Abd Elnabi,

Elkaliny,

Elyazied

et al. 2023

Toxics

105

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Natural and anthropogenic sources of metals in the ecosystem are perpetually increasing; consequently, heavy metal (HM) accumulation has become a major environmental concern. Human exposure to HMs has increased dramatically due to the industrial activities of the 20th century. Mercury, arsenic lead, chrome, and cadmium have been the most prevalent HMs that have caused human toxicity. Poisonings can be acute or chronic following exposure via water, air, or food. The bioaccumulation of these HMs results in a variety of toxic effects on various tissues and organs. Comparing the mechanisms of action reveals that these metals induce toxicity via similar pathways, including the production of reactive oxygen species, the inactivation of enzymes, and oxidative stress. The conventional techniques employed for the elimination of HMs are deemed inadequate when the HM concentration is less than 100 mg/L. In addition, these methods exhibit certain limitations, including the production of secondary pollutants, a high demand for energy and chemicals, and reduced cost-effectiveness. As a result, the employment of microbial bioremediation for the purpose of HM detoxification has emerged as a viable solution, given that microorganisms, including fungi and bacteria, exhibit superior biosorption and bio-accumulation capabilities. This review deals with HM uptake and toxicity mechanisms associated with HMs, and will increase our knowledge on their toxic effects on the body organs, leading to better management of metal poisoning. This review aims to enhance comprehension and offer sources for the judicious selection of microbial remediation technology for the detoxification of HMs. Microbial-based solutions that are sustainable could potentially offer crucial and cost-effective methods for reducing the toxicity of HMs.

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“…Beside being used as biofertilizer, biofilms in environments with high metal concentrations can play an important role for the plants above because they are able to immobilize contaminants and precipitate heavy metals. Biofilms are able to reduce metals such as Pb 2+ , Cd 2+ , and Zn 2+ and reduce metal penetration into plants such as potato tubers [3]. The use of biofilm-based biofertilizer is one of the keys to healthy agriculture due to the high degradation of agricultural land.…”

Section: Introductionmentioning

confidence: 99%

Developed biofilm-based biofertilizer as a bioremediation agent for agroecosystem and environment contaminated with Cr (VI)

Salsabila,

Rosariastuti,

Sudadi

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Biofilm are microbial community that attaches to one substrate and another through EPS. Functional microbes in biofilm can be used as a biofertilizer which increase plant growth by providing nutrients and plant resistance to pathogens due to agricultural environmental degradation. Beside being a biofertilizer, biofilm can be developed as a bioremediation agent. Hexavalent chromium (Cr (VI)) is a heavy metal that is widely used in the leather tanning, pharmaceutical and metallurgical industries, so it is easily found in irrigation and causes agricultural land pollution. Chrome can be toxic to microorganisms, plants, animals and humans, because it is carcinogenic, causes ecosystem damage and has a negative impact on human health. Various techniques are used to remediate Cr (VI), one method that can be used is bioremediation by exploiting the potential of bacteri or fungi incorporated in the biofilm. In this study, the biofilm consisted of bacterial and fungi (BFBF) that were found on the western slopes of Mount Lawu. The Cr (VI) reduction test was carried out at concentrations of 5 and 50 mg L−1. The results showed that the biofilm was able to reduce Cr (VI) up to 1.19 mg L−1within 6 hours.

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Fungal-bacterial biofilm mediated heavy metal rhizo-remediation

Cited by 10 publications

References 60 publications

Screening and performance optimization of fungi for heavy metal adsorption in electrolytes

Screening and performance optimization of fungi for heavy metal adsorption in electrolytes

Toxicity of Heavy Metals and Recent Advances in Their Removal: A Review

Developed biofilm-based biofertilizer as a bioremediation agent for agroecosystem and environment contaminated with Cr (VI)

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