Oleo-extraction of microplastics using flotation plus sol-gel technique to confine small particles in silicon dioxide gel.
Fine microplastic particles
Flotation
Gel
Microplastic extraction
Oleophilicity
Silane
TEOS
Tetraethyl orthosilicate
Journal
Environmental science and pollution research international
ISSN: 1614-7499
Titre abrégé: Environ Sci Pollut Res Int
Pays: Germany
ID NLM: 9441769
Informations de publication
Date de publication:
15 Oct 2024
15 Oct 2024
Historique:
received:
17
04
2024
accepted:
07
10
2024
medline:
15
10
2024
pubmed:
15
10
2024
entrez:
14
10
2024
Statut:
aheadofprint
Résumé
Extracting microplastics from natural sources is challenging, especially microplastics with sizes smaller than 100 μm. The flotation method is the most common microplastic extraction, but it struggles with fine particles due to the difficulty in collecting floating plastic particles from the liquid during the separation process. This study proposes a new floating media, tetraethyl orthosilicate (TEOS), that could separate microplastics using its hydrophobic-oleophilic properties. Most interestingly, TEOS transformed from a liquid state to a solid state (gel) by hydrolysis and condensation reactions, thus safely capturing the separated microplastic particles after flotation and mitigating particle loss from scooping since its gel acted as a particle holder. The average recovery rates obtained were in the range of 95-100% for polyethylene terephthalate, polyethylene, polypropylene, polyvinyl chloride, polystyrene, polytetrafluoroethylene, and aged tyre rubber. The recovery rates were slightly reduced for finer particles (sizes down to 40 μm) at 82-98%. TEOS-based extraction provided a higher recovery rate for non-polar plastics than for polar or hydrophilic plastics. The separated microplastics maintained their characteristics for polymer identification, as proven by spectroscopic and thermal analysis techniques. Therefore, TEOS-based extraction could be a new approach to microplastic extraction, especially for preventing fine particle loss.
Identifiants
pubmed: 39402363
doi: 10.1007/s11356-024-35276-5
pii: 10.1007/s11356-024-35276-5
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
Références
Akhter F, Jamali AR, Abbasi MN et al (2023) A comprehensive review of hydrophobic silica and composite aerogels: synthesis, properties and recent progress towards environmental remediation and biomedical applications. Environ Sci Pollut Res 30:11226–11245. https://doi.org/10.1007/s11356-022-24689-9
doi: 10.1007/s11356-022-24689-9
Al-Azzawi MSM, Kefer S, Weißer J et al (2020) Validation of sample preparation methods for microplastic analysis in wastewater matrices—reproducibility and standardization. Water 12(9):2445. https://doi.org/10.3390/w12092445
doi: 10.3390/w12092445
Colom X, Anwar F, Formela K et al (2016) FTIR spectroscopic and thermogravimetric characterization of ground tyre rubber devulcanized by microwave treatment. Polym Test 52:200–208. https://doi.org/10.1016/j.polymertesting.2016.04.020
doi: 10.1016/j.polymertesting.2016.04.020
Constant M, Billon G, Breton N et al (2021) Extraction of microplastics from sediment matrices: experimental comparative analysis. J Hazard Mater 420:126571. https://doi.org/10.1016/j.jhazmat.2021.126571
doi: 10.1016/j.jhazmat.2021.126571
Corami F, Rosso B, Morabito E et al (2021) Small microplastics (<100 μm), plasticizers and additives in seawater and sediments: oleo-extraction, purification, quantification, and polymer characterization using Micro-FTIR. Sci Total Environ 797:148937. https://doi.org/10.1016/j.scitotenv.2021.148937
doi: 10.1016/j.scitotenv.2021.148937
Cutroneo L, Reboa A, Geneselli I et al (2021) Considerations on salts used for density separation in the extraction of microplastics from sediments. Mar Pollut Bull 166:112216. https://doi.org/10.1016/j.marpolbul.2021.112216
doi: 10.1016/j.marpolbul.2021.112216
Debraj D, Lavanya M (2023) Microplastics everywhere: a review on existing methods of extraction. Sci Total Environ 893:164878. https://doi.org/10.1016/j.scitotenv.2023.164878
doi: 10.1016/j.scitotenv.2023.164878
Dohnalová Ž, Svoboda L, Šulcová P (2008) Characterization of kaolin dispersion using acoustic and electroacoustic spectroscopy. J Min Metall B 44:63–72. https://doi.org/10.2298/JMMB0801063D
doi: 10.2298/JMMB0801063D
Furukawa T, Sato H, Kita Y et al (2006) Molecular structure, crystallinity and morphology of polyethylene/polypropylene blends studied by Raman mapping, scanning electron microscopy, wide angle X-ray diffraction, and differential scanning calorimetry. Polym J 38:1127–1136. https://doi.org/10.1295/polymj.PJ2006056
doi: 10.1295/polymj.PJ2006056
Guermat N, Bellel A, Sahli S et al (2010) Electrical and structural characterisation of plasma-polymerized TEOS thin films as humidity sensors. M J Condensed Matter 12:208–211. https://doi.org/10.34874/PRSM.mjcm-vol12iss3.276
doi: 10.34874/PRSM.mjcm-vol12iss3.276
He B, Goonetilleke A, Ayoko GA et al (2020) Abundance, distribution patterns, and identification of microplastics in Brisbane River sediments, Australia. Sci Total Environ 700:134467. https://doi.org/10.1016/j.scitotenv.2019.134467
doi: 10.1016/j.scitotenv.2019.134467
Hernández CS, Hernández MS, Cerritos RC et al (2017) DBTL as neutral catalyst on TEOS/PDMS anticorrosive coating. J Solgel Sci Technol 81:405–412. https://doi.org/10.1007/s10971-016-4198-6
doi: 10.1007/s10971-016-4198-6
Hernández-Padrón G, Rangel-Miranda D, Cedillo G et al (2015) Incorporation of nanohybrid films of silica into recycled polystyrene matrix. J Nanomater 2015:173949. https://doi.org/10.1155/2015/173949
doi: 10.1155/2015/173949
Karl CW, Rahimi W, Kubowicz S et al (2020) Surface modification of ethylene propylene diene terpolymer rubber by plasma polymerization using organosilicon precursors. ACS Appl Polym Mater 2:3789–3796. https://doi.org/10.1021/acsapm.0c00401
doi: 10.1021/acsapm.0c00401
Karlsson TM, Vethaak A, Almroth BC (2017) Screening for microplastics in sediment, water, marine invertebrates and fish: Method development and microplastic accumulation. Mar Pollut Bull 122:403–08. https://doi.org/10.1016/j.marpolbul.2017.06.081
doi: 10.1016/j.marpolbul.2017.06.081
Kaur H, Chaudhary S, Kaur H (2022) Hydrolysis and condensation of tetraethyl orthosilicate at the air–aqueous interface: implications for silica nanoparticle formation. ACS Appl Nano Mater 5:411–22. https://doi.org/10.1021/acsanm.1c03250
doi: 10.1021/acsanm.1c03250
Kim JI, Jang YJ, Kim JS et al (2021) Effects of silicon doping on low-friction and high-hardness diamond-like carbon coating via filtered cathodic vacuum arc deposition. Sci Rep 11:3529. https://doi.org/10.1038/s41598-021-83158-4
doi: 10.1038/s41598-021-83158-4
Krovi SA, Moreno Caffaro MM, Aravamudhan S et al (2022) Fabrication of nylon-6 and nylon-11 nanoplastics and evaluation in mammalian cells. Nanomaterials 12:2699. https://doi.org/10.3390/nano12152699
doi: 10.3390/nano12152699
Kumar S, Kaur N, Sharma AK et al (2017) Improved Cl2 sensing characteristics of reduced graphene oxide when decorated with copper phthalocyanine nanoflowers. RSC Adv 7:25229–25236. https://doi.org/10.1039/C7RA02212C
doi: 10.1039/C7RA02212C
Lai HJ, Wang ZW, Wu PY et al (2012) Structure and diffusion behavior of Trioctyl Trimellitate (TOTM) in PVC film studied by ATR-IR spectroscopy. Ind Eng Chem Res 51:9365–9375. https://doi.org/10.1021/ie300007m
doi: 10.1021/ie300007m
Lechthaler S, Hildebrandt L, Stauch G et al (2020) Canola oil extraction in conjunction with a plastic free separation unit optimises microplastics monitoring in water and sediment. Anal Methods 12:5128–5139. https://doi.org/10.1039/D0AY01574A
doi: 10.1039/D0AY01574A
Mani T, Frehland S, Kalberer A et al (2019) Using castor oil to separate microplastics from four different environmental matrices. Anal Methods 11:1788–1794. https://doi.org/10.1039/C8AY02559B
doi: 10.1039/C8AY02559B
Möller JN, Heisel I, Satzger A et al (2022) Tackling the challenge of extracting microplastics from soils: a protocol to purify soil samples for spectroscopic analysis. Environ Toxicol Chem 41(4):844–857. https://doi.org/10.1002/etc.5024
doi: 10.1002/etc.5024
Nabi I, Bacha AUR, Zhang LW (2022) A review on microplastics separation techniques from environmental media. J Clean Prod 337:130458. https://doi.org/10.1016/j.jclepro.2022.130458
doi: 10.1016/j.jclepro.2022.130458
Nantege D, Odong R, Auta HS et al (2023) Microplastic pollution in riverine ecosystems: threats posed on macroinvertebrates. Environ Sci Pollut Res 30:76308–76350. https://doi.org/10.1007/s11356-023-27839-9
doi: 10.1007/s11356-023-27839-9
Piwowarczyk J, Jędrzejewski R, Moszyński D et al (2019) XPS and FTIR studies of polytetrafluoroethylene thin films obtained by physical methods. Polymers 11:1629. https://doi.org/10.3390/polym11101629
doi: 10.3390/polym11101629
Plante AF, Fernández JM, Leifeld J (2009) Application of thermal analysis techniques in soil science. Geoderma 153:1–10. https://doi.org/10.1016/j.geoderma.2009.08.016
doi: 10.1016/j.geoderma.2009.08.016
Rodrigues MO, Gonçalves AMM, Gonçalves FJM et al (2020) Improving cost-efficiency for MPs density separation by zinc chloride reuse. Methodsx 7:100785. https://doi.org/10.1016/j.mex.2020.100785
doi: 10.1016/j.mex.2020.100785
Rodrigues A, Sena da Fonseca B, Pinto APF et al (2021) Exploring alkaline routes for production of TEOS-based consolidants for carbonate stones using amine catalysts. New J Chem 45:3833–3847. https://doi.org/10.1039/D0NJ04677A
doi: 10.1039/D0NJ04677A
Rosso B, Scoto F, Hallanger IG et al (2024) Characteristics and quantification of small microplastics (<100 µm) in seasonal svalbard snow on glaciers and lands. J Hazard Mater 467:133723. https://doi.org/10.1016/j.jhazmat.2024.133723
doi: 10.1016/j.jhazmat.2024.133723
Schütze B, Thomas D, Kraft M et al (2022) Comparison of different salt solutions for density separation of conventional and biodegradable microplastic from solid sample matrices. Environ Sci Pollut Res 29:81452–81467. https://doi.org/10.1007/s11356-022-21474-6
doi: 10.1007/s11356-022-21474-6
Scopetani C, Chelazzi D, Mikola J et al (2020) Olive oil-based method for the extraction, quantification and identification of microplastics in soil and compost samples. Sci Total Environ 733:139338. https://doi.org/10.1016/j.scitotenv.2020.139338
doi: 10.1016/j.scitotenv.2020.139338
Smith BC (2021) The infrared spectra of polymers III: hydrocarbon polymers. Spectroscopy 36:22–25. https://doi.org/10.56530/spectroscopy.mh7872q7
doi: 10.56530/spectroscopy.mh7872q7
Sturm MT, Herbort AF, Horn H et al (2020) Comparative study of the influence of linear and branched alkyltrichlorosilanes on the removal efficiency of polyethylene and polypropylene-based microplastic particles from water. Environ Sci Pollut Res 27:10888–10898. https://doi.org/10.1007/s11356-020-07712-9
doi: 10.1007/s11356-020-07712-9