Potential use of<i>Bacillus</i>genera for metals removal from spent catalysts

Gómez-Ramírez, Marlenne; Rojas-Avelizapa, Norma G.; Hernández‐Gama, Regina; Tenorio-Sánchez, Sergio A.; López-Villegas, Edgar Óliver

doi:10.1080/10934529.2019.1585720

Cited by 7 publications

(8 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The isolates showed tolerance to the high concentrations of Co and Ni encountered at the polluted sites. Cadmium tolerant Bacillus species were also reported from contaminated soil samples [35,36]. In contrast to this study, Mustapha et al [37] reported the dominance of heavy metal tolerant Microbacterium spp.…”

Section: Discussioncontrasting

confidence: 61%

Heavy Metal Tolerance Bacillus spp Isolated From Crude Oil Polluted Soil

Fashola

2020

JRRS

View full text Add to dashboard Cite

Introduction: Indiscriminate dumping of spent oils enriched with heavy metals has led to increase in heavy metals load in the soil. Heavy metals exert toxic effects on biodegradation of organic pollutant in cocontaminated soil and there is need to find suitable strategies for their removal. Aim: The aim of this study was to assess the heavy metals resistance capability of indigenous Bacillus species in hydrocarbon polluted soil to nickel (Ni), Cadmium (Cd), Lead (Pb) and Chromium (Cr). Materials and Methods: Heavy metal tolerant bacteria were isolated from hydrocarbon polluted soil using Luria-Berthani agar supplemented with the respective metals and spread plate techniques. The isolates were putatively identified on the basis of their colonial morphology and biochemical characteristics and their antibiotics susceptibility pattern were evaluated using disc diffusion method. Results: The maximum tolerable concentration (MTC) of the four heavy metals to the selected isolates was 2 mM. Four bacteria isolates able to withstand the MTC were putatively identified as Bacillus subtilis, Bacillus megaterium, Bacillus laterosporus and Bacillus polymyxa. Out of the four Bacillus species, only B. laterosporus did not show multiple tolerance to the tested antibiotics which show that there is correlation between heavy metal tolerance and antibiotics resistance by the isolates. Conclusion: Multiple heavy metal tolerance Bacillus spp. were isolated from crude oil polluted soil. These bacteria could be suitable agents for bioaugmentation of hydrocarbon polluted soil co-contaminated with heavy metals.

show abstract

Section: Discussioncontrasting

confidence: 61%

Heavy Metal Tolerance Bacillus spp Isolated From Crude Oil Polluted Soil

Fashola

2020

JRRS

View full text Add to dashboard Cite

show abstract

“…To understand and know the type of mechanism that each microorganism will use and depend on how they interact with the environment and the contaminants, some factors are (1) microbial specie, (2) microbe-metal interactions, (3) growth medium composition, (4) pH, (5) temperature, (6) contact time, (7) oxygen, (8) osmotic pressure, (9) culture age, (10) microbial tolerance, (11) population density, (12) chemical and metal composition of solid wastes, (13) pulp density of waste, (14) size of particle of solid waste, (15) oxidation state of metals, and (16) presence of other toxic compounds [16][17][18][19][20][21]. The isolation of microorganisms from contaminated environments has led to finding microorganisms adapted to them, which have also developed certain metabolic strategies to detoxify their environment, which are used for the treatment of different types of waste.…”

Section: Biological Systems For the Treatment And Recovery Of Metalsmentioning

confidence: 99%

“…During treatment of solid waste, generally a low pulp density is used with ranges between 0.01 and 10% (w/v) and rarely higher than 16-80% (w/v) [19,21,22,24,26,27]. While in biohydrometallurgy of low-grade ores, pulp density is generally 10% or higher because the ores are mainly reduced sulfides ores, which do not contain alkaline matter or toxic compounds that could inhibit the microbial growth or production of metabolite of interest to metal removal [16,17].…”

Section: Biological Systems For the Treatment And Recovery Of Metalsmentioning

confidence: 99%

“…allow the recovery of various metals or specific metals depending on the conditions used and the type of microorganism. Some species like Bacillus [16,22,32], Pseudomonas [33], Streptomyces [34], and Microbacterium [24,27] have already been tested for the recovery of some metals such as Cr (VI), Cu, Cd, Fe (III), Pb, Hg, Ni, Zn, Pd, Pt, Th, U, and V.…”

Section: Anion Ejection Systemsmentioning

confidence: 99%

“…Species of genus Bacillus has been reported to remove metals Ni, V, Al, Fe, As, and Mg at different extents, and cell morphology changes have been detected at the end of biological treatment as a higher quantity of spores for Bacillus thuringiensis MNSH2-AH-3, 2 μm cells in pairs for Bacillus megaterium MNSS-AH-4, and long chain-vegetative cells having inclusions into the cell surface in Bacillus sp. PRGSd-MS-2 [16]. The ability of Microbacterium oxydans MNSH2-PHGII-1 and Microbacterium liquefaciens MNSH2-PHGII-2 has recently been reported for the removal of Ni and V metals by using a rich medium added of 16% of spent catalyst (w/v) finding removal percentages for Ni 45.4 and 51% and for V 30.4 and 41.4% for each microorganism, respectively [24].…”

Section: Treatment Of Spent Catalysts Of the Petrochemical Industry Bmentioning

confidence: 99%

See 2 more Smart Citations

Treatment of Solid Waste Containing Metals by Biological Methods

Gómez-Ramírez¹,

Tenorio-Sánchez²

2021

Natural Resources Management and Biological Sciences

Self Cite

View full text Add to dashboard Cite

Methods for the treatment of hazardous wastes are based on two main approaches: either hydrometallurgy or pyrometallurgy. Biological methods are considered viable environmental-friendly technologies and have been developed in the last years and have been associated with lower cost and energy requirements, in comparison with nonbiological processes. In these methods, it is important to find suitable microorganisms to degrade organic substances under favorable conditions to complete the treatment. The advantages of biotechnological treatment of hazardous wastes are biodegradation or detoxification of a wide variety of hazardous substances using natural microorganisms, as well as the availability of a wide range of biotechnological methods for the total destruction of these wastes without the production of secondary hazardous derivatives. However, to intensify the biological treatment, it is a necessary requirement to add nutrients and acceptors of electrons, including the control of the optimal conditions. Thus, biotechnology provides a solution for the ecological degradation of harmful heavy metals and toxic chemicals. The main purpose of this chapter is to present and discuss the biological methods used in the treatment of solid waste containing metals and the advantages and disadvantages of each method.

show abstract