Bacterial bioremediation of heavy metals in wastewater: A review of processes and applications

Sreedevi, P.; Suresh, K.; Jiang, Guangming

doi:10.1016/j.jwpe.2022.102884

Cited by 80 publications

(19 citation statements)

References 134 publications

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“…La biorremediación de combustibles es una solución para una de las peores contaminaciones a nivel mundial en el medio ambiente [36]. Los derrames de combustible pueden ocurrir en las actividades diarias de diversos sectores, como el transporte, zonas industriales y demás [37]. Dicho proceso, se realiza tras un análisis inicial del escenario, el tipo de hidrocarburo, del terreno, bacteria a utilizar, y por último la población afectada junto con los estudios técnicos de su alcance hidrogeológico de acuerdo al tipo de suelo [38].…”

Section: Producción De Phas a Partir De Hidrocarburosunclassified

Polihidroxialcanoatos (PHAs) en bacterias como alternativa ante el aumento de la contaminación ambiental: análisis metabólico y avances en la actualidad

Ceciliano-Castro,

Vargas-Morera,

Vargas-Delgado

et al. 2024

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Los polihidroxialcanoatos (PHA), son plásticos biodegradables sintetizados por una gran variedad de microorganismos y se identifican por compartir características muy similares con los plásticos de origen petroquímico. Estos biopolímeros pueden ser aprovechados para reemplazar materiales de plástico, los mismos que actualmente representan un gran problema de contaminación ambiental al ser poco degradables. Los estudios más recientes, se enfocan en la búsqueda de estrategias de extracción de PHA, empleando la biorremediación en plásticos petroquímicos, combustibles, y en tratamiento de aguas que buscan reducir el impacto de la contaminación ambiental. Todo esto se lleva a cabo mediante reacciones químicas, que las bacterias realizan con las fuentes de carbono, generando PHA mientras se eliminan los desechos contaminantes. La biodegradabilidad es la principal ventaja de estos materiales sintetizados por medio de microrganismos, en comparación con los plásticos convencionales que no poseen esta propiedad. El objetivo de esta revisión es evidenciar la producción de polihidroxialcanoatos (PHA), en bacterias como alternativa ante el aumento de la contaminación ambiental.

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Section: Producción De Phas a Partir De Hidrocarburosunclassified

Polihidroxialcanoatos (PHAs) en bacterias como alternativa ante el aumento de la contaminación ambiental: análisis metabólico y avances en la actualidad

Ceciliano-Castro,

Vargas-Morera,

Vargas-Delgado

et al. 2024

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“…Bioprecipitation is based on the precipitation of elements with ligands (phosphates, sulfides, carbonates, hydroxides, etc.) released by microorganisms resulting in the production of insoluble and immobile complexes ( Shukla et al, 2017 ; Sreedevi et al, 2022 ). Some bacterial species from the genera Sphingomonas, Bacillus and Stenotrophomonas have the capacity to release inorganic phosphates (Pi) through phosphatase activity, which precipitates with U VI and produce insoluble uranium phosphates ( Chandwadkar et al, 2018 ; Zhang et al, 2018 ; Sánchez-Castro et al, 2020 ; Zhong et al, 2021 ).…”

Section: Diversity and Influence Of Microorganisms In Dgr Systemsmentioning

confidence: 99%

Impact of microbial processes on the safety of deep geological repositories for radioactive waste

et al. 2023

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To date, the increasing production of radioactive waste due to the extensive use of nuclear power is becoming a global environmental concern for society. For this reason, many countries have been considering the use of deep geological repositories (DGRs) for the safe disposal of this waste in the near future. Several DGR designs have been chemically, physically, and geologically well characterized. However, less is known about the influence of microbial processes for the safety of these disposal systems. The existence of microorganisms in many materials selected for their use as barriers for DGRs, including clay, cementitious materials, or crystalline rocks (e.g., granites), has previously been reported. The role that microbial processes could play in the metal corrosion of canisters containing radioactive waste, the transformation of clay minerals, gas production, and the mobility of the radionuclides characteristic of such residues is well known. Among the radionuclides present in radioactive waste, selenium (Se), uranium (U), and curium (Cm) are of great interest. Se and Cm are common components of the spent nuclear fuel residues, mainly as 79Se isotope (half-life 3.27 × 105 years), 247Cm (half-life: 1.6 × 107 years) and 248Cm (half-life: 3.5 × 106 years) isotopes, respectively. This review presents an up-to-date overview about how microbes occurring in the surroundings of a DGR may influence their safety, with a particular focus on the radionuclide-microbial interactions. Consequently, this paper will provide an exhaustive understanding about the influence of microorganisms in the safety of planned radioactive waste repositories, which in turn might improve their implementation and efficiency.

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“…The RT value was less than one, indicating that the adsorption of the metal ion onto ATS is favourable 5 . Similarly, the removal of nickel ions from aqueous solutions using carboxymethyl cellulose-graft-poly (acrylic acid) CMC-g-PAA hydrogel as an adsorbent was studied 33 . Isotherm for the adsorption of nickel on CMC-g-PAA hydrogel was developed and the equilibrium data fitted to the Langmuir and Freundlich isotherm models 2 .…”

Section: Biosorption Profilementioning

confidence: 99%

Molecular characterization and optimization of streptomyces albogriseolous NGP2 and its prospects on heavy metals degradation

Vishnupriya¹,

Anbarasi²,

M³

2022

krj

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The biosorbing ability of actinomycetes from the marine sediments of South Indian Coastal region, Chennai, Tamilnadu, India was examined and identified as Streptomyces albogriseolous NGP 2 (JX843531) by 16S rRNA gene sequence analysis. The isolate showed the potential metal removing capacity by incubating it with various concentrations of heavy metals such as Copper (Cu), Zinc (Zn), Chromium (Cr) and Cadmium (Cd). Simultaneously, various optimization properties such as pH, initial metal concentration and contact time were analyzed. The pH 7.0 was recorded as an optimum for the removal of Cr and Zn, for Cd and Cu it was recorded as 6.0. The biosorption of the heavy metals Cu and Zn by the strain was found to be highest and recorded as 92% and 90.6% respectively, while the lowest sorption was found for Cd (85 %) at 30 mg/l concentration. The effectiveness of the removal of heavy metals was best studied by Langmuir and Freundlich adsorption isotherm models. The regression Coefficients also significantly expressed in the removal process. The results revealed that the isolate has the potential capability for the removal of heavy metals.

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Bacterial bioremediation of heavy metals in wastewater: A review of processes and applications

Cited by 80 publications

References 134 publications

Polihidroxialcanoatos (PHAs) en bacterias como alternativa ante el aumento de la contaminación ambiental: análisis metabólico y avances en la actualidad

Polihidroxialcanoatos (PHAs) en bacterias como alternativa ante el aumento de la contaminación ambiental: análisis metabólico y avances en la actualidad

Impact of microbial processes on the safety of deep geological repositories for radioactive waste

Molecular characterization and optimization of streptomyces albogriseolous NGP2 and its prospects on heavy metals degradation

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