Surfactants: Chemistry, Toxicity and Remediation

Rebello, Sharrel; Asok, Aju K.; Mundayoor, Sathish; Jisha, M. S.

doi:10.1007/978-3-319-02387-8_5

Cited by 51 publications

(37 citation statements)

References 268 publications

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“…Toxicity of poloxamers has been reported to be proportional to their lipophilic character, which is in agreement with our findings. One of the main reported effects of the surfactants is the cell surface depolarization, which has the consequence of decreasing nutrient consumption, therefore affecting algal growth negatively. The alterations of cell surface properties are related to the integration of alkyl chains into the cell wall …”

Section: Resultsmentioning

confidence: 99%

“…On the opposite side, the ionic surfactants (CTAB and SDS), both Tergitols (NP9 and TMN6), and Triton X‐100 exhibited the highest levels of toxicity to both microalgae. Altogether, it can be inferred that the toxicity of surfactants to microalgae depends on the specific chemical structure and concentration of the surfactant but it is also species‐dependent …”

Section: Resultsmentioning

confidence: 99%

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Surfactant selection for a liquid foam‐bed photobioreactor

Janoska

Vázquez

Janssen

et al. 2018

Biotechnology Progress

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A novel liquid foam-bed photobioreactor has been shown to hold potential as an innovative technology for microalgae production. In this study, a foam stabilizing agent has been selected which fits the requirements of use in a liquid foam-bed photobioreactor. Four criteria were used for an optimal surfactant: the surfactant should have good foaming properties, should not be rapidly biodegradable, should drag up microalgae in the foam formed, and it should not be toxic for microalgae. Ten different surfactants (nonionic, cationic, and anionic) and two microalgae genera (Chlorella and Scenedesmus) were compared on the above-mentioned criteria. The comparison showed the following facts. Firstly, poloxameric surfactants (Pluronic F68 and Pluronic P84) have acceptable foaming properties described by intermediate foam stability and liquid holdup and small bubble size. Secondly, the natural surfactants (BSA and Saponin) and Tween 20 were easily biodegraded by bacteria within 3 days. Thirdly, for all surfactants tested the microalgae concentration is reduced in the foam phase compared to the liquid phase with exception of the cationic surfactant CTAB. Lastly, only BSA, Saponin, Tween 20, and the two Pluronics were not toxic at concentrations of 10 CMC or higher. The findings of this study indicate that the Pluronics (F68 and P84) are the best surfactants regarding the above-mentioned criteria. Since Pluronic F68 performed slightly better, this surfactant is recommended for application in a liquid foam-bed photobioreactor. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 34:711-720, 2018.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Surfactant selection for a liquid foam‐bed photobioreactor

Janoska

Vázquez

Janssen

et al. 2018

Biotechnology Progress

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“…The primary market barrier for biosurfactants is the vast library of existing chemical surfactants produced from petroleum feedstocks; end users can choose from hundreds of synthetic surfactants to fulfill their industry need. A major drawback is that chemical/synthetic surfactants can accumulate in the environment and are toxic to microbes, plants, aquatic life, and higher vertebrates including humans [36]. Therefore, because biosurfactants are biodegradable and petroleum-independent, their value will likely increase as pollution increases.…”

Section: Biosurfactantsmentioning

confidence: 99%

“…Rhodotorula taiwanensis would be genetically engineered to produce a single PEFA "base compound" and then be systematically modified to move up and down the HLB scale. conveniently cover the entire HLB scale, to such an extent that their massive usage is now poisoning the environment [36]. Biosurfactants offer a more environmentally friendly option (biodegradable and petroleum-independent); however, there are a limited number of commercially available biosurfactants, and each one covers only a small portion of the HLB scale.…”

Section: Rhodotorula Babjevae and Rhodotorula Taiwanensismentioning

confidence: 99%

The Oleaginous Red YeastRhodotorula/Rhodosporidium: A Factory for Industrial Bioproducts

Lyman¹,

Urbin²,

Strout³

et al. 2019

Yeasts in Biotechnology

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Rhodotorula genus, amended in 2015, is polyphyletic and contains Rhodotorula species that grow as single-cell yeast (monomorphic) and reproduce asexually via budding/fission (anamorphic); it also contains Rhodosporidium species that reproduce sexually (teleomorphic) and alternate between a yeast phase and dikaryotic filamentous phase (dimorphic). Several species of these "red yeast" produce industrial bioproducts, namely biofuel feedstocks, carotenoids, enzymes, and biosurfactants. This chapter highlights the biotechnology areas that Rhodotorula/ Rhodosporidium contributes to and the future market value of those industries. The primary yeast species to be discussed include Rhodosporidium toruloides, Rhodotorula glutinis, Rhodosporidium diobovatum, Rhodosporidium kratochvilovae, Rhodotorula graminis, Rhodotorula babjevae, and Rhodotorula taiwanensis.

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“…The most often used test-organisms are aquatic organisms − microorganisms, aquatic plants, benthic organisms, phytoplankton, zooplankton and vertebrates [5]− [7]. Terrestrial higher plants and microorganisms are also used for this purpose [8].…”

Section: Introductionmentioning

confidence: 99%

Toxicity Evaluation of Surface Cleaning Preparation Using Different Test Methods / Virsmu tīrīšanas līdzekļa toksiskuma novērtēšana, izmantojot dažādas testa metodes

Vecstaudza¹,

Kļaviņš²,

Muter³

et al. 2015

Materials Science and Applied Chemistry

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-Surface cleaning preparations pose a serious threat to the environment. Toxicity of a pre-manufactured preparation SCP-1 was tested on bacteria, algae and higher plants and was expressed as a minimal inhibitory concentration (MIC). Obtained results showed that among unicellular and more complex testorganisms MIC values differed 10-100 fold suggesting that an application of complex test-organism battery is necessary to evaluate the toxicity of SCP-1 thoroughly. MIC values were different from the critical micelle concentration; this indicates that the SCP1 mechanism of action might not involve membrane disruption and/or destabilization.

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Surfactants: Chemistry, Toxicity and Remediation

Cited by 51 publications

References 268 publications

Surfactant selection for a liquid foam‐bed photobioreactor

Surfactant selection for a liquid foam‐bed photobioreactor

The Oleaginous Red YeastRhodotorula/Rhodosporidium: A Factory for Industrial Bioproducts

Toxicity Evaluation of Surface Cleaning Preparation Using Different Test Methods / Virsmu tīrīšanas līdzekļa toksiskuma novērtēšana, izmantojot dažādas testa metodes

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