Selection of surfactants as main components of ecological wetting agent for effective extinguishing of forest and peat-bog fires
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Joanna Rakowska
,
Krystyna Prochaska
Abstract
The results of research into obtaining an ecological wetting agent for wildfires are presented. First, measurements of the equilibrium and dynamic surface tension for anionic and non-ionic commercial surfactants and their binary mixtures were conducted. Next, the parameters of adsorption facilitating a quantitative description of the process in both binary systems as well as single-component solutions were estimated. In addition, the static and dynamic contact angles on model surfaces with different hydrophobicity were studied (glass, polyethylene, pressed peat). In a few mixed systems, a synergism in reducing the critical micelle concentration and/or a synergy of the ability to wetting model surfaces was identified. Next, research into the sorptivity and wettability of peat (loose and pressed) was conducted. It was found that non-ionic and anionic surfactants exhibit different abilities in respect of foaming and moistening of peat. From an analysis of the preliminary results, the surface-active components were selected to obtain a wetting agent composition. The wettability and adsorption characteristics and an evaluation of the foaming ability using solutions of the prepared compositions were tested. The effectiveness of the wetting composition thus obtained was confirmed in the laboratory and in field firefighting. The test results confirmed the better wettability and sorptivity on peat and the effectivity for combating wildfires, compared with some typical commercial products.
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- Rapid determination of fosetyl-aluminium in commercial pesticide formulations by high-performance liquid chromatography
- Immobilisation of acid pectinase on graphene oxide nanosheets
- Bench-scale biosynthesis of isonicotinic acid from 4-cyanopyridine by Pseudomonas putida
- Enzymatic synthesis of a chiral chalcogran intermediate
- Separation of Cd(II) and Ni(II) ions by supported liquid membrane using D2EHPA/M2EHPA as mobile carrier
- Fouling of nanofiltration membranes used for separation of fermented glycerol solutions
- Oxyhumolite influence on adsorption and desorption of phosphate on blast furnace slag in the process of two-stage selective adsorption of Cu(II) and phosphate
- Cellulose-precipitated calcium carbonate composites and their effect on paper properties
- Landfill leachate treatment using the sequencing batch biofilm reactor method integrated with the electro-Fenton process
- Effect of sintering temperature on the magnetic properties and charge density distribution of nano-NiO
- Synthesis, optimization, characterization, and potential agricultural application of polymer hydrogel composites based on cotton microfiber
- Cu(II) removal enhancement from aqueous solutions using ion-imprinted membrane technique
- Synthesis of new eburnamine-type alkaloid via direct hydroalkoxylation
- Selection of surfactants as main components of ecological wetting agent for effective extinguishing of forest and peat-bog fires
- Ultrasonic and Lewis acid ionic liquid catalytic system for Kabachnik-Fields reaction
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