Evaluation of chitosan aggregates as pickering emulsifier for the remediation of marine sediments

Saliu, Francesco; Meucci, Edoardo; Allevi, Claudio; Savini, Alessandra; Imiete, Iikpoemugh Elo; Pergola, Roberto Della

doi:10.1016/j.chemosphere.2021.129733

Cited by 8 publications

(4 citation statements)

References 27 publications

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“…Artificially contaminated sand was stirred in the presence of a chitosan nanoaggregate solution under alkaline conditions to form an emulsion. The results showed an average removal rate of 65.1 ± 6.4% for crude oil of different specific gravities from 4 wt% artificially contaminated sand and sub-sea sediment, which was comparable to that obtained using a commercial surfactant mixture containing non-ionic and anionic surfactants (67.8 ± 5.2%) [94]. After mixing protonated chitosan polyelectrolyte and rhamnolipid solutions, chitosan did not affect the CMC of rhamnolipids.…”

Section: Pickering Emulsionssupporting

confidence: 62%

Application and Development of Chemical Heat Washing Technology in Petroleum Oily Sludge Treatment: A Review

Liu,

Wang,

Zhai

et al. 2024

Separations

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Because of the requirements for accelerating the construction of a green, low-carbon, and recycling economy development system, the petrochemical industry has been paying attention to green and low-carbon transformations and innovations. Oily sludge is a type of bulk hazardous solid waste from various sources that significantly harms the environment. Chemical heat washing of oily sludge represents a large proportion of the treatment technology for oily sludge, which can be used individually and has many applications in joint treatment with other processes. However, research on the formulation of cleaning agents for this process has mainly focused on the surfactant at this stage, and many studies have demonstrated the secondary pollution of surfactant; thus, research on reducing or replacing surfactants as cleaning agents has been conducted. This review highlights the research progress of chemical heat washing of oily sludge according to the classification of cleaning agents and describes the reasons for the stabilization of currently recognized oily sludge, the chemical heat washing process, and the mechanism of oil–soil separation. Finally, the research direction for new emulsions as new cleaning agents to replace surfactants is set out.

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Section: Pickering Emulsionssupporting

confidence: 62%

Application and Development of Chemical Heat Washing Technology in Petroleum Oily Sludge Treatment: A Review

Liu,

Wang,

Zhai

et al. 2024

Separations

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“…The property is comparable to a 0.5 solution of the nonionic surfactant Tween 80 56 and can be linked with, but not limited to, the A26Sfp production of relatively high amounts of EPS and glucans (Table 2). Polysaccharide surfactants are an emerging class of biodegradable nontoxic and sustainable alternatives to conventional surfactant systems 3,5,58,59 .…”

Section: Discussionmentioning

confidence: 99%

Biodegradation of naphthalene mediated by the plant growth promoting rhizobacteria

Timmusk

Teder²,

Behers³

2021

Preprint

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We compared the ability of two bacterial strains, Paenibacillus polymyxa A26 and P. polymyxa A26Sfp, for biodegradation of naphthalene (NAP). The studies were performed under simulated laboratory conditions, in liquid medium and soil with different carbon sources, pH and salt contents. Changes in the luminescence inhibition of Aliivibrio fischeri, as an indicator of the baseline toxicity, were observed in degradation mixtures during 7 days of incubation. While both strains expressed the best growth and NAP degradation ability in the minimal salt medium containing sucrose and 5% NaCl at pH 8, the mutant strain remained effective even under extreme conditions. A26Sfp was found to be an efficient and potentially industrially important polycyclic aromatic hydrocarbon degradation strain. Its extracellular polysaccharide production is 30% and glucan production twice that of the wild type A 26. The surface tension reduction ability was ascertained as 25 to 30% increased emulsification ability.

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“…The A26Sfp emulsification ability is comparable to a 0.5 solution of the non-ionic surfactant Tween 80 [36]. Polysaccharide surfactants are an emerging class of biodegradable nontoxic and sustainable alternatives to conventional surfactant systems [3,4,46,47].…”

Section: Discussionmentioning

confidence: 99%

“…The properties of the constituents influence how the spilled oil behaves and determines the fate and effects of the spill in the environment [1]. Among the components of crude oil, polycyclic aromatic hydrocarbons (PAHs) are a class of organic contaminants that contain two or more fused benzene rings; they are considered important after oil spill accidents because they are toxic, mutagenic, carcinogenic, and relatively persistent in the environment [2,3]. Of the various forms of PAHs in crude oil, 16 PAHs including naphthalene (NAP) are considered as priority pollutants by the environmental protection agencies [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Paenibacillus polymyxa A26 and Its Surfactant-Deficient Mutant Degradation of Polycyclic Aromatic Hydrocarbons

Timmusk

Teder²,

Behers³

2021

Stresses

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We compared the ability of two bacterial strains, Paenibacillus polymyxa A26 and P. polymyxa A26Sfp, for biodegradation of naphthalene (NAP). The studies were performed under simulated laboratory conditions, in liquid medium and soil with different carbon sources, pH and salt contents. Changes in the luminescence inhibition of Aliivibrio fischeri, as an indicator of the baseline toxicity, were observed in degradation mixtures during 7 days of incubation. While both strains expressed the best growth and NAP degradation ability in the minimal salt medium containing sucrose and 5% NaCl at pH 7 and 8, the mutant strain remained effective even under extreme conditions. A26Sfp was found to be an efficient and potentially industrially important polycyclic aromatic hydrocarbon degradation strain. Its extracellular polysaccharide production is 30%, and glucan production is twice that of the wild type A 26. The surface tension reduction ability was ascertained as 25–30% increased emulsification ability.

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Evaluation of chitosan aggregates as pickering emulsifier for the remediation of marine sediments

Cited by 8 publications

References 27 publications

Application and Development of Chemical Heat Washing Technology in Petroleum Oily Sludge Treatment: A Review

Application and Development of Chemical Heat Washing Technology in Petroleum Oily Sludge Treatment: A Review

Biodegradation of naphthalene mediated by the plant growth promoting rhizobacteria

Paenibacillus polymyxa A26 and Its Surfactant-Deficient Mutant Degradation of Polycyclic Aromatic Hydrocarbons

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