Chemosphere, Journal Year: 2024, Volume and Issue: 368, P. 143775 - 143775
Published: Nov. 1, 2024
Language: Английский
ACS Omega, Journal Year: 2024, Volume and Issue: 9(13), P. 15615 - 15632
Published: March 21, 2024
Wastewater discharged from the textile industry contains approximately 15% unfixed dyes, predominantly 60–70% azo dyes. These dyes are a major environmental concern due to their persistence and potential toxicity. In this paper, an environmentally friendly mercury-free XeI* excilamp emitting 253 nm UV light is reported, same has been utilized for degradation of using advanced oxidation process (AOP) with TiO2/H2O2. A new developed in which one electrode coated TiO2 nanoparticles that improves efficiency dye degradation. Additionally, effects varying loading concentrations, XeI*-excimer intensity, starting concentration, suspension pH, H2O2 addition examined. The outcomes study confirm 13 times faster XeI*-excimer/H2O2 than XeI*-excimer/TiO2, attributed abundance hydroxyl radicals generated by modified XeI*-excimer/H2O2. Also, RB5 2.3 as compared bare more 95% reduction chemical oxygen demand achieved 40 min case study, maximum energy yield 5712 mg/kWh reported. Furthermore, high degree found alkaline medium (pH 10). Because effluent highly alkaline, result significant, direct treatment possible. use source industrial applications appears be promising based on testing real wastewater matrix. treated its reusability agricultural purposes germination radish seeds soil, ∼26% enhanced observed wastewater.
Language: Английский
Citations
15
Physica Scripta, Journal Year: 2024, Volume and Issue: 99(2), P. 025018 - 025018
Published: Jan. 9, 2024
Abstract Far UV-C light at wavelength 222 nm is gaining popularity nowadays due to its properties that it cannot penetrate even the outer dead skin of humans and tear layer eyes. This has been proven be much safer for human health. In this paper, a dielectric barrier discharge (DBD) based excimer lamp with very narrow intense spectrum peaking reported. Optimization high voltage electrodes carried out minimize heating without using any external cooling. The produced in configuration diffused low pressure 140 mbar. Generally, pressure, wide band spectra having full-width half maxima (FWHM) 8–15 obtained. case, confined gas gap bi-polar pulse power arrangements, obtained are narrow, an FWHM 1.7 nm. Applied voltage, frequency optimized get electrical-to-optical conversion efficiency lamp. measured radiated intensity applied input electrical 31 W from ∼2.5 mW cm −2 , which results optical as 12.5%. bacterial developed also examined on pathogenic gram-positive ( S. aureus ) gram-negative E. coli bacteria. Complete inactivation achieved UV dose 3 mJ/cm 2 12 mJ –2 respectively. Morphological studies treated bacteria have performed correlate results.
Language: Английский
Citations
13
Coatings, Journal Year: 2024, Volume and Issue: 14(1), P. 92 - 92
Published: Jan. 10, 2024
Photocatalytic technologies represent an innovative method to reduce microbial load on surfaces, even considering recent public health emergencies involving coronaviruses and other microorganisms, whose presence has been detected surfaces. In this review paper, the antimicrobial efficacy of various photocatalysts applied by different coating methods surfaces compared critically discussed. Publications reviewing use photocatalytic coatings for effectiveness have examined. Clear search parameters were employed analyze PubMed, Scopus, WOS databases, resulting in 45 papers published between 2006 2023 that met inclusion criteria. The paper assessed types targeted objectives. Based pooled data analysis, TiO2 exhibited a substantial effect decreasing bacteria strains, both Gram-positive -negative (99.4%). Although diversity these poses significant obstacles obtaining comprehensive final assessment their feasibility surface application, subgroup analysis indicated variations removal efficiency strains based (p = 0.005) time exposure 0.05). provide promising approach combating spread microorganisms Further “in-field” investigations are necessary foreseeable future explore optimize novel exciting technology.
Language: Английский
Citations
9
Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)
Published: May 31, 2024
Abstract
The
textile
dyeing
and
manufacturing
industry
is
the
major
producer
of
significant
amounts
wastewater
that
contain
persistent
substances
such
as
azo
dyes
require
adequate
remediation
measures.
Far
ultraviolet
at
222
nm
light
may
provide
an
advantage
for
contaminants
degradation
compared
to
conventional
UV
sources
(254
nm).
In
this
paper,
reactive
black
5
(RB5)
in
artificial
has
been
performed
using
a
Kr/Cl
2
excimer
source
under
direct
photolysis
advanced
oxidation
process
TiO
/H
O
.
solution
pH,
catalyst
concentration,
intensity,
initial
concentration
dye,
addition
H
influence
rate
constant.
molar
absorption
coefficient,
quantum
yield
RB5
electrical
energy
per
order
(EEO)
from
different
treatment
methods
have
reported.
shows
1.26
times
higher
than
254
nm.
EEO
excimer-222/H
(
$$\sim$$
Language: Английский
Citations
7
Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179097 - 179097
Published: Feb. 1, 2025
Language: Английский
Citations
0
AIP Advances, Journal Year: 2025, Volume and Issue: 15(2)
Published: Feb. 1, 2025
The quest for alternatives to traditional cold chain preservation and heat-based shelf-life extension has become increasingly important in recent years. As a result, investigation into the effects of ultraviolet (UV) radiation on physicochemical properties various substances, including milk, gained significant attention. UV-C light, particular, is recognized its effectiveness inactivating wide range bacteria spores aqueous solutions. This work aims design continuous annular UV reactor milk treatment examine impacts milk’s microbial characteristics compare these outcomes those achieved through conventional pasteurization methods. For same, 11 W lamp (254 nm) an house designed 17.5 far (222 have been used. key parameters, such as pH, conductivity, temperature, fat/solid not fat, load, are assessed. dosage supplied samples determined using actinometry measured be 6.16 J/ml. methylene blue reduction test increases up more than 5 h, with just four passes reactor. Approximately log reductions Salmonella typhimurium Staphylococcus aureus three (residence time 24.3 s) whole milk. results obtained compared technique. We found that proposed identical performance micro-organisms without altering physico-chemical properties. suggests possibility utilizing sources improve safety, quality, shelf life. study expands scope applications irradiation feasible non-thermal method dairy industry.
Language: Английский
Citations
0
Journal of Food Measurement & Characterization, Journal Year: 2024, Volume and Issue: 18(9), P. 7595 - 7606
Published: July 8, 2024
Language: Английский
Citations
3
Physica Scripta, Journal Year: 2024, Volume and Issue: 99(8), P. 085612 - 085612
Published: July 15, 2024
Abstract Atmospheric pressure plasma (APP) has intrigued the interest of researchers for various applications such as disinfection, air purification, etc. In this context, a deeper understanding correlation between APP’s characteristics like discharge parameters, active species composition, and eradication airborne microorganisms with varying relative humidity (RH) been examined using dielectric barrier based atmospheric (DBD-APP) source. One electrodes developed DBD-APP source coated TiO 2 nanoparticles to enhance generation reactive during process. The results show that, even same peak-to-peak applied voltage, current power decrease increasing RH. Optical emission spectroscopy (OES) is used determine intensity species, whereas spectrophotometry quantify produced by at parameters. Instead UV radiation, plasma-produced highly energetic electrons activates electron–hole pair generation. geometry device played an important role in generating high energy electrons. From source, microorganism’s disinfection efficiency ∼95.8% ∼98.7% achieved total bacterial counts (TBCs) fungal (TFCs) RH range 70%–90%, just 20 min continuous operation. However, 20%–40%, inactivation dropped ∼78.8% ∼87.5% TBCs TFCs, respectively. outcome indicates that higher levels are better indoor purification sources circulation system can effectively disinfect environments.
Language: Английский
Citations
3
Fundamental Plasma Physics, Journal Year: 2024, Volume and Issue: 12, P. 100068 - 100068
Published: Aug. 23, 2024
Language: Английский
Citations
1
Practice, progress, and proficiency in sustainability, Journal Year: 2024, Volume and Issue: unknown, P. 200 - 221
Published: June 28, 2024
Particle pollution, such as PM2.5 and PM10, poses a growing threat to human health the environment. These particles come from natural sources like plant pollen, well activities industry, traffic, wear tear of materials clothing or artificial turf. microenvironmental components can cause respiratory problems cardiovascular diseases allergies. Pollen is significant example it trigger allergic rhinitis, conjunctivitis, asthma. Moreover, pollen allergies exacerbate other conditions atopic dermatitis. Radioactive microparticles, those released in Fukushima nuclear accident, are also major concern. persist environment for long time severe issues.
Language: Английский
Citations
0