Detailed studies on microbial adhesion and degradation of polystyrene foam wastes (PSFW) for clean environment

Ebciba, Chandrasekaran; Gnanamani, A.

doi:10.1007/s11356-020-10272-7

Cited by 13 publications

(4 citation statements)

References 33 publications

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“…[48] The metabolic pathways of benzene to phenol relating to styrene production was demonstrated in previous studies. [29,48] Moreover, styrene compounds could also be generated by other several microorganisms such as Penicillium citreonigrum(fungi) and Laurencia distichophylla(algae) found in wastewater, sludge, VOCs in the human body could be related to COVID-19 infection with the possible change of metabolic pathways, [14] effects occurring when the respiratory epithelium is damaged and when immunity is adjusted. These changes affect an increase or a decrease in the growth and colonization of microorganisms coinfecting with SARS-CoV-2 distributing to the human body.…”

Section: Staphylococcus Aureusmentioning

confidence: 79%

Identification of Volatile Markers in Sweat for COVID‐19 Screening by Gas Chromatography‐Mass Spectrometry

Chuachaina,

Thaveesangsakulthai,

Sinsukudomchai

et al. 2024

ChemistrySelect

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Due to an outbreak of coronavirus spreading in recent years, there is an urgent need for effective, rapid, and non‐invasive diagnostics to detect and differentiate among patients who are infected and uninfected with SARS‐CoV‐2 for controlling the virus propagation. This study developed an alternative method for COVID‐19 screening from volatile analysis of metabolites mainly studied in sweat samples obtained from the populations in Bangkok, Thailand, during December 2020 to April 2022. A total of 140 collected samples; 70 positive confirmed COVID‐19 cases and another 70 negatives confirmed COVID‐19 cases were applied to be separated, detected, and identified as volatile organic compounds (VOCs)/odor occurring from SARS‐CoV‐2 infection body by the technique of Headspace solid‐phase microextraction gas chromatography‐mass spectrometry (HS‐SPME‐GC‐MS) together with principle component analysis (PCA), which allowed potential volatile markers of COVID‐19 such as pentadecane, nonanal, styrene, xylene, ethylbenzene, and 2‐ethylhexyl acrylate (up to 94 % accuracy, 93 % sensitivity, 96 % selectivity, and 94 % specificity), respectively, along with limit of detection in a range of 0.26–125 μg. The result was validated by comparison with the RT‐PCR results.

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Section: Staphylococcus Aureusmentioning

confidence: 79%

Identification of Volatile Markers in Sweat for COVID‐19 Screening by Gas Chromatography‐Mass Spectrometry

Chuachaina,

Thaveesangsakulthai,

Sinsukudomchai

et al. 2024

ChemistrySelect

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“…Scanning electron microscope for the surface change [ 9 , 31 , 50 , 53 , 54 ], biofilm formation on the polystyrene [ 9 , 32 , 55 ], gel-permeation chromatography for the size reduction [ 56 ], cross-polarization/magic angle spinning nuclear magnetic resonance spectroscopy for the structural change [ 31 , 34 ], and thermogravimetric analyzer coupled with a Fourier-transform infrared spectrometer for the mass change [ 9 , 22 , 34 , [57] , [58] , [59] ] were used for analyzing polystyrene degradation activity of microorganisms. In this study, the polystyrene decomposition ability of bacteria was confirmed by micro-sprayed polystyrene onto a solid mineral medium [ 40 ].…”

Section: Discussionmentioning

confidence: 99%

“…The expanded polystyrene (EPS), used as insulations or packaging materials, accounted for 7% of the total plastic production in 2014 [ [6] , [7] , [8] ]. However, polystyrene does not decompose, unlike styrene monomers and oligomers, due to its large molecular weight and structural stability [ [9] , [10] , [11] ]. To solve this problem biologically, polystyrene degradation experiments using bacteria and fungi from soil and landfills have been proposed, but the degradation rate was less than 3% after four months [ [12] , [13] , [14] ].…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of polystyrene by intestinal symbiotic bacteria isolated from mealworms, the larvae of Tenebrio molitor

Park

Kim

et al. 2023

Heliyon

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“…(2) Channel mold of HIPS The HIPS channel mold can be directly dissolved due to the acidolysis of the limonene solution [43,44]. The residual HIPS flocculent can be washed off with water without external extrusion, and the size of the dissolved channel changes.…”

Section: Size Observation Of Microchannelsmentioning

confidence: 99%

Research on Integrated 3D Printing of Microfluidic Chips

Sun

Yin

2023

Micromachines

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Microfluidic chips have the advantages of miniaturization, integration, and portability, and are widely used in the early diagnosis of major diseases, personalized medical treatment, environmental detection, health quarantine, and other fields. The existing microfluidic chip manufacturing process is difficult to operate because of complex three-dimensional channels, complicated manufacturing steps, limited printing materials, the difficulty of operating the bonding process, and the need to purchase expensive new equipment. In this paper, an integrated molding method for microfluidic chips that integrates 3D printing and polymer dissolution technology is proposed. First, the channel mold of poly(vinyl alcohol) (PVA) or high impact polystyrene (HIPS) is dissolved to complete the manufacturing of the microfluidic chip channel. The integrated 3D-forming method of microfluidic chips proposed in this paper can manufacture microchannels inside the microfluidic chip, avoid the bonding process, and eliminate the need for rapid alignment of microchannels, material modification, and other operations, thus improving the stability of the process. Finally, by comparing the microchannels made by PVA and HIPS, it is concluded that the quality of the microchannels made by HIPS is obviously better than that made by PVA. This paper provides a new idea for the fabrication of microfluidic chips and the application of HIPS.

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Detailed studies on microbial adhesion and degradation of polystyrene foam wastes (PSFW) for clean environment

Cited by 13 publications

References 33 publications

Identification of Volatile Markers in Sweat for COVID‐19 Screening by Gas Chromatography‐Mass Spectrometry

Identification of Volatile Markers in Sweat for COVID‐19 Screening by Gas Chromatography‐Mass Spectrometry

Biodegradation of polystyrene by intestinal symbiotic bacteria isolated from mealworms, the larvae of Tenebrio molitor

Research on Integrated 3D Printing of Microfluidic Chips

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