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Bioremediation of heavy metals using microalgae: Recent ...

Highlights•Bioremediation of five toxic heavy metals by microalgae were reviewed in-depth.•Feasibility and potential of value-added product accumulation were evaluated.•Discussion of advanced techniques and integration with other technologies.•Challenges and proposed strategies ...

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Bioremediation Options for Heavy Metal Pollution

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Heavy metal bioremediation in the form of metallic nanoparticles with the help of bacteria and the use of genetically modified microorganisms as a part of the bioremediation process have also been reported. 99–101. Intracellular sequestration is the concentration of metal ions within the microbial cells.

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Bioremediation and Tolerance of Humans to .

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The food and water we consume are often contaminated with a range of chemicals and heavy metals, such as lead, cadmium, arsenic, chromium, and mercury, that are associated with numerous diseases. Although heavy-metal exposure and contamination are not a recent phenomenon, the concentration of metals and the exposure to populations remain major issues despite efforts at remediation. The ability ...

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Bioremediation Options for Heavy Metal .

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Heavy metal bioremediation in the form of metallic nanoparticles with the help of bacteria and the use of genetically modified microorganisms as a part of the bioremediation process have also been reported. 99–101. Intracellular sequestration is the concentration of metal ions within the microbial cells.

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A Review on Bioremediation of Heavy Metals in Contaminated ...

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A Review on Bioremediation of Heavy Metals in Contaminated Water 46 | Page carbon, nitrogen, sulfur, and phosphorous cycle21-24. Bioremediation involves the removal of the contaminated material to be treated elsewhere. Some examples of bioremediation technologies are phytoremediation,

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Bioremediation of Heavy Metals by Microbes | .

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01.04.2017 · Heavy metals are naturally present in the soil, but higher concentration of these elements is harmful to plants, animals, and humans. Prolonged exposure of such heavy metals can have deleterious health effects on human life. Bioremediation of these heavy metals like As, Cd, Cr, Hg, Ni, Hg, and Zn can be done by either plants or microorganisms ...

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Bioremediation Options for Heavy Metal .

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Heavy metal bioremediation in the form of metallic nanoparticles with the help of bacteria and the use of genetically modified microorganisms as a part of the bioremediation process have also been reported. 99–101. Intracellular sequestration is the concentration of metal ions within the microbial cells.

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Toxicity and Bioremediation of Heavy Metals .

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Bioremediation of heavy metals has been extensively studied and the performance of several bioremediators were reviewed and summarized. Bioremediation is an environmentally friendly and cost-effective technology for the clean-up of complex industrial tannery effluent containing heavy metals. Many natural biosorbents of microbial origins have ...

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Bioremediation of Heavy Metals - YouTube

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06.02.2019 · Intro to Chemistry, Basic Concepts - Periodic Table, Elements, Metric System & Unit Conversion - Duration: 3:01:41. The Organic Chemistry Tutor Recommended for you

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Bioremediation - Wikipedia

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Heavy Metals. Heavy metals including cadmium, chromium, lead and uranium are elements so they cannot be biodegraded. However, bioremediation processes can potentially be used to reduce the mobility of these material in the subsurface, reducing the .

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MICROBIAL BIOREMEDIATION OF SOME HEAVY METALS IN .

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molecular mechanism of metal accumulation has numerous biotechnological implications for bioremediation of metal-contaminated sites. The food and water we consume are often contaminated with a range of chemicals and heavy metals, such as gold, copper, nickel, zinc, lead, cadmium, arsenic, chromium, and mercury that are associated with numerous diseases. Human ...

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Microbes in Heavy Metal Remediation: A .

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Disposal of heavy metals or waste products containing heavy metals in the environment postures a trivial threat to public safety and health. Heavy metals are persistence and they can also cause biomagnifications and accumulate in food chain. Method: Microbial bioremediation of heavy metal is emerging as an effective technique. Microbial ...

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(PDF) Bioremediation of Heavy Metals - .

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Today, man's greatest challenge is to cope up with metal pollution problem because unlike organic compounds which are degraded naturally, heavy metals cannot be degraded, hence get accumulated ...

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The Role of Microorganisms in Bioremediation- .

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Microorganism's uptake heavy metals actively (bioaccumulation) and/or passively (adsorption). Microbial methylation plays an important role in heavy metals bioremediation, because methylated compounds are frequently volatile. For example, Mercury, Hg (II) can be biomethylated by a number of different bacterial species Alcaligenes faecalis ...

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Biodegradation of Heavy Metals A Review

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bioremediation of heavy metal from the contaminated soil and waste water. Though when microorganisms especially bacteria are exposed to higher concentration of metal, it may have cidal effects on them. Microorganisms can interact with metals and radionuclides via many mechanisms, some of which may be used as the basis for potential bioremediation strategies (Lloyd et al., 2005). .

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Bioremediation of Heavy Metals | IntechOpen

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Soil heavy metal contamination represents risks to humans and the ecosystem through drinking of contaminated groundwater, direct ingestion or the food chain, and reduction in food quality. Bioremediation means cleanup of polluted environment via transformation of toxic heavy metals into less toxic form by microbes or its enzymes. Otherwise ...

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Biotechnological advances in bioremediation of heavy ...

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bioremediation technologies, especially the mechanisms of phytoremediation of heavy metals along with some case studies in India and abroad. However, the challenges (biosafety assessment and genetic pollution) involved in adopting the new initiatives for cleaning-up the heavy metals-contaminated ecosystems from both ecological and

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(PDF) A Review on Bioremediation of Heavy .

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Heavy metal pollution is expanding its arms to every nook and corner of this living world, thereby swamping our ecosystem with heavy metals that prove to be hazardous for plants, animals, and ...

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Bioremediation of heavy metals in food industry ...

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Some heavy metals are known as pollutants and are toxic, and their bioaccumulation in plant and animal tissues can cause undesirable effects for humans; therefore, their amount in water and food should always be under control. The aim of this study is to investigate the conditions for the bioremediation of heavy metals in foods. Various ...

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Bioremediation of Toxic Heavy Metals: A .

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Bioremediation approach is presenting a splendid alternate for conventional expensive and inefficient methods for the heavy metal removal. Conclusion: The patents granted on the bioremediation of toxic heavy metals are summarized in the present manuscript which supported the applicability of bioremediation technique at commercial scale. However ...

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Bioremediation of Arsenic and Lead by Plants .

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The persistence of heavy metals in the environment may pollute or contaminate soils and aqueous streams as both natural components or as the result of human activity. Bioremediation process in this regards is an option that offers the possibility to destroy or render harmless various contaminants using plants and microbes. Amongst the various bioremediation processes, phytoremediation and ...

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