Biosurfactant-Based Bioremediation of Toxic Metals

Chakraborty, Jaya; Das, Surajit

doi:10.1016/b978-0-12-800021-2.00007-8

Cited by 22 publications

(10 citation statements)

References 165 publications

(84 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Microorganisms use a set of carbon sources and energy for growth. The combination of carbon sources with insoluble substrates facilitates the intracellular diffusion and production of different substances [ 10 , 11 , 12 ]. Microorganisms (yeasts, bacteria and some filamentous fungi) are capable of producing biosurfactants with different molecular structures and surface activities [ 4 ].…”

Section: Producing Microorganismsmentioning

confidence: 99%

“…Increases in levels of heavy metals in soil have been reported in many industrialised countries. Metals and metalloids, such as chromium, cadmium, mercury and lead, can threaten ecosystems and human health through either the food chain or direct exposure to contaminated soil and water [ 1 , 12 ]. As different technologies can be used in combination for the treatment of organic pollutants and heavy metals, biosurfactants can be used in the removal of hydrophobic organic compounds and heavy metals [ 138 , 139 , 140 ].…”

Section: Industrial Applications Of Biosurfactantsmentioning

confidence: 99%

See 1 more Smart Citation

Biosurfactants: Multifunctional Biomolecules of the 21st Century

Santos

Rufino

Luna

et al. 2016

IJMS

817

558

View full text Add to dashboard Cite

In the era of global industrialisation, the exploration of natural resources has served as a source of experimentation for science and advanced technologies, giving rise to the manufacturing of products with high aggregate value in the world market, such as biosurfactants. Biosurfactants are amphiphilic microbial molecules with hydrophilic and hydrophobic moieties that partition at liquid/liquid, liquid/gas or liquid/solid interfaces. Such characteristics allow these biomolecules to play a key role in emulsification, foam formation, detergency and dispersal, which are desirable qualities in different industries. Biosurfactant production is considered one of the key technologies for development in the 21st century. Besides exerting a strong positive impact on the main global problems, biosurfactant production has considerable importance to the implantation of sustainable industrial processes, such as the use of renewable resources and “green” products. Biodegradability and low toxicity have led to the intensification of scientific studies on a wide range of industrial applications for biosurfactants in the field of bioremediation as well as the petroleum, food processing, health, chemical, agricultural and cosmetic industries. In this paper, we offer an extensive review regarding knowledge accumulated over the years and advances achieved in the incorporation of biomolecules in different industries.

show abstract

Section: Producing Microorganismsmentioning

confidence: 99%

Section: Industrial Applications Of Biosurfactantsmentioning

confidence: 99%

Biosurfactants: Multifunctional Biomolecules of the 21st Century

Santos

Rufino

Luna

et al. 2016

IJMS

817

558

View full text Add to dashboard Cite

show abstract

“…The rhamnolipids have also been applied to increase the bioremediation of soil contaminated simultaneously by both organic compounds and metals (e.g., lead, cadmium, arsenic). The presence of rhamnolipids can reduce metal bioavailability and/or enhance microbial tolerance to metals (Chakraborty & Das, ; Meenakshisundaram & Pramila, ). For example, Maslin and Maier () investigated the effect of rhamnolipids on the degradation of phenanthrene by indigenous populations in two different soils co‐contaminated by cadmium and phenanthrene.…”

Section: Remediation Of Co‐contaminationsmentioning

confidence: 99%

Advances in applications of rhamnolipids biosurfactant in environmental remediation: A review

Liu

Zhong

Yang³

et al. 2018

Biotech & Bioengineering

165

View full text Add to dashboard Cite

The objective of this review is to provide a comprehensive overview of the advances in the applications of rhamnolipids biosurfactants in soil and ground water remediation for removal of petroleum hydrocarbon and heavy metal contaminants. The properties of rhamnolipids associated with the contaminant removal, that is, solubilization, emulsification, dispersion, foaming, wetting, complexation, and the ability to modify bacterial cell surface properties, were reviewed in the first place. Then current remediation technologies with integration of rhamnolipid were summarized, and the effects and mechanisms for rhamnolipid to facilitate contaminant removal for these technologies were discussed. Finally rhamnolipid-based methods for remediation of the sites co-contaminated by petroleum hydrocarbons and heavy metals were presented and discussed. The review is expected to enhance our understanding on environmental aspects of rhamnolipid and provide some important information to guide the extending use of this fascinating chemical in remediation applications.

show abstract

“…These substances may contribute to the solubilization, mobilization, dispersion, and desorption of inorganic or organic contaminants (Mulligan, 2009;Franzetti et al, 2010;Cameotra and Makkar, 2010). The mobilization of metal ions and other soil contaminants by biosurfactants is of interest and had received increased attention recently (Chakraborty and Das, 2014;Franzetti et al, 2014;Sarubbo et al, 2015). There is an abundance of scientific reports concerning biosurfactant production and its environmental applications using isolated microbial strains.…”

Section: Introductionmentioning

confidence: 99%

Developing a biosurfactant to attenuate arsenic contamination in mining tailings

Araújo

Silva

Teixeira

2021

Heliyon

View full text Add to dashboard Cite

The present study aimed to investigate the ability of a microbial consortium to produce biosurfactant in the presence of two carbon sources and also to evaluate the efficiency of the cell-free supernatant cultures to mobilize As from naturally contaminated soil. Pseudomonas and Stenotrophomonas were the main microorganisms in the microbial consortium. The pH, the incubation time, the temperature, and the glucose and glycerol ratios in the culture medium are the main factors influencing biosurfactant production. The lowest surface tension, 30 mN.m À1 , and the higher emulsification index, 58%, were achieved at the optimum production conditions (OPC), i.e., pH 9.5, a 2.5 glucose/glycerol ratio, after three days of incubation at 25 C. The cell-free extracts containing biosurfactants were more efficient in mobilizing As than distilled water, CaCl 2 0.1 mol.L À1 ; saponin, 0.1%; or sodium dodecyl sulfate, 1% during a sequential soil-flushing procedure. The As mobilization using the supernatants containing biosurfactant was sensitive to pH. The use of OPC cell-free supernatant under alkaline conditions leads to the best-obtained results: 24.6% of As removal (678 mg.kg À1) during sequential extractions. The toxicity reduction of the column eluted solution from the first to the seventh cycle evaluated by the germination index (GI) and morphological structures of Allium cepa in the ecotoxicological assessment confirmed the efficiency of the proposed treatment. Allium cepa seeds and seedlings were sensitive in detecting As in soil and eluted solutions with short time responses to the contaminant. Seeds development increased gradually with arsenic removal. The germination index rose from 0 to 55% after soil decontamination through the proposed soil-flushing procedure.

show abstract

Biosurfactant-Based Bioremediation of Toxic Metals

Cited by 22 publications

References 165 publications

Biosurfactants: Multifunctional Biomolecules of the 21st Century

Biosurfactants: Multifunctional Biomolecules of the 21st Century

Advances in applications of rhamnolipids biosurfactant in environmental remediation: A review

Developing a biosurfactant to attenuate arsenic contamination in mining tailings

Contact Info

Product

Resources

About