Article
Green & Sustainable Science & Technology
Mingran Wang, Qianyu Wang, Yanping Cai, Rongfang Yuan, Fei Wang, Yiguang Qian, Zhongbing Chen, Beihai Zhou, Huilun Chen
Summary: The study demonstrated that under UV/PS system, PFBA can be effectively removed, and both acidic and alkaline conditions affect the degradation of PFBA, while higher persulfate doses or greater light intensity accelerate the degradation of PFBA effectively.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Kejia Zhang, Yulong San, Cong Cao, Tuqiao Zhang, Cheng Cen, Zhang Li, Jie Fu
Summary: This study investigated the degradation kinetics and mechanism of odorant haloanisoles using peracetic acid combined with UV irradiation (PAA/UV). The results showed that the removal efficiency of haloanisoles by PAA/UV was over 92% after 1 hour reaction, with different haloanisoles following specific degradation rates. The study also indicated that PAA mainly contributed to the degradation of chloroanisoles, while direct photolysis played a larger role in the removal of bromoanisole. The research suggested that PAA/UV process could effectively reduce olfactory discomfort and health risks associated with haloanisoles.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Xiaodong He, Kasi Gopinath, Gnanasekar Sathishkumar, Lingli Guo, Kai Zhang, Zhisong Lu, Changming Li, En-Tang Kang, Liqun Xu
Summary: The study demonstrates the synthesis of natural polyphenol tannic acid-capped silver nanoparticles for antibacterial surface coatings, showing significant antibacterial effects both in vitro and in vivo. The functionalized surfaces exhibit minimal cytotoxicity and no side effects on major organs after implantation, indicating their biocompatibility for potential biomedical applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Dohee Kang, Yejung Lee, Kyu Ha Park, Jae-Sung Bae, Seong Mu Jo, Sung-Soo Kim
Summary: In this study, softwood lignin was chemically modified with fatty acids and subjected to UV-triggered oxidative reactions to form stable oxidatively cross-linked networks, enabling the conversion of lignin into heat-resistant carbon fibers. The use of oleic acid-functionalized lignin showed faster oxidative cross-linking compared to stearic acid-functionalized lignin, potentially reducing manufacturing costs for carbon fiber production.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Polymer Science
Tomislav Grzan, Lucianna Grieco, Vjekoslav Zivkovic, Goran Mihulja
Summary: Various surface modification techniques have been developed to enhance the wetting, adhesion, and printing properties of synthetic polymer surfaces by adding functional groups. UV irradiation has shown potential as a suitable method for surface modification of polymers, which can also improve the bonding properties of wood-glue systems. This study aimed to assess the feasibility of UV irradiation as a pretreatment for wood surfaces before gluing and evaluate the properties of wooden glued joints. The research found that UV irradiation improved the bonding properties of differently machined wood.
Article
Chemistry, Physical
Hajime Maeda, Saki Nakamura, Taniyuki Furuyama, Masahito Segi
Summary: The reaction of 1-naphthyl naphthylmethyl ethers 1 and 2 with Lewis acids in CH2Cl2 resulted in rearrangement of the naphthylmethyl group to different positions of the naphthalene ring. The rearrangement of 2-naphthyl ethers 3 and 4 proceeded to the 1-position. Irradiation of compound 1 in benzene solution led to rearrangement at the 4-position, while rearrangement of compound 2 occurred at the 2- and 4-positions. The regioselectivity of the reactions can be explained by charge density, spin density, steric hindrance, and solvent cage effect.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Cell Biology
Alfredo Martinez-Gutierrez, Irene Fernandez-Duran, Anna Marazuela-Duque, Nicolas G. Simonet, Ibraheem Yousef, Immaculada Martinez-Rovira, Josefina Martinez-Hoyos, Alejandro Vaquero
Summary: UV radiation promotes cellular senescence, but activation of sirtuins may prevent skin aging. Shikimic acid has been identified as a potential compound to protect cells from UV-induced senescence by activating SIRT1, thereby reversing misfolded protein accumulation and downregulating unfolded protein response signaling.
Article
Chemistry, Applied
A. M. R. Ramirez, F. Mieres, F. Pineda, P. Grez, C. Heyser
Summary: Poly (indole-5-carboxylic acid) (5-PICA), Poly (indole-6-carboxylic acid) (6-PICA), and Poly (indole-7-carboxylic acid) (7-PICA) were electrochemically deposited onto AISI304 stainless steel. The morphology and structure of the polymer were characterized using IR spectroscopy and SEM. The corrosion protection performance was evaluated using LSV and EIS in sulfuric acid solution at different temperatures. The results showed that the morphology and branching structure of the polymer had a significant influence on its hydrophobicity and corrosion protection ability.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Engineering, Environmental
Mojtaba Ebrahimian Mashhadi, Mehrdad Mozaffarian, Madjid Mohseni, Morteza Jafarikojour, Bahram Dabir
Summary: In this study, the synergistic effects of CDI and AOP were investigated for the simultaneous removal of NaCl salt and HA, showing high removal efficiencies under specific operating conditions. The experiments demonstrated that the presence of HA had little impact on the desalination efficiency, and combining CDI and AOP resulted in effective removal of organic contaminants.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Applied
Caroline Pereira, Jean-Sebastien Baumann, Vincent Humblot, Celine Falentin-Daudre
Summary: This study aimed to improve the adhesion and differentiation of osteoblast cells on titanium surfaces by grafting poly(VBP). The results showed that poly(VBP) grafted on titanium surfaces significantly improved the interaction between osteoblast cells and the surface.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Engineering, Environmental
Zhen Wang, Guanghui Chen, Xinrui Wang, Guihua Yang, Yu Liu, Chao Zhang
Summary: A novel nanomaterial was synthesized and applied to selective reduction of nitrate, showing significant improvement in nitrate conversion under UV irradiation and persulfate activation in the presence of oxalic acid. The high nitrate conversion was attributed to the formation of galvanic cells accelerating the generation of electrons. Additionally, the coexistence of Cu2O and MnO2 exhibited excellent photocatalytic performance, leading to high N-2 selectivity and efficient CO2 generation.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Biophysics
Renata Guimaraes de Sa, Tatiane Moraes Arantes, Erenilda Ferreira de Macedo, Luisa Molina Dona, Jeniffer C. F. Pereira, Carolina Ramos Hurtado, R. Jose Varghese, Oluwatobi Samuel Oluwafemi, Dayane Batista Tada
Summary: This study focused on the evaluation of the photoprotective activity and cytotoxicity of zirconia nanoparticles. The results showed that ZrO2 NPs exhibited low cytotoxicity and provided effective protection under UV irradiation.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Food Science & Technology
Jong-Heon Seok, Jae-Won Ha
Summary: This study investigated the synergistic bactericidal effect of simultaneous treatment with UVA irradiation and citric acid on sliced cheese contaminated with E. coli O157:H7, Salmonella Typhimurium, and Listeria monocytogenes. The combined treatment resulted in significant reductions in bacterial populations, primarily through damage to the cell membrane, production of ROS, and inactivation of enzymes. The treatment did not affect the texture and color parameters of the cheese, indicating the potential of this approach in improving microbial safety of dairy products.
Article
Engineering, Environmental
Bryan Liu, Lauren Mullen, Emma M. Payne, Karl G. Linden
Summary: Krypton chloride (KrCl*) excimer ultraviolet (UV) light may offer advantages over conventional low-pressure (LP) UV for contaminant degradation. The authors investigated the direct and indirect photolysis as well as UV/hydrogen peroxide-driven advanced oxidation (AOP) of two chemical contaminants in different water samples using KrCl* and 254nm, 222nm UV sources. The results showed that the 222nm excimer lamps significantly improved the degradation of contaminants compared to the conventional 254nm LPUV. Rating: 8/10.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Food Science & Technology
Yoah Moon, Sangha Han, Jeong Won Son, Si Hong Park, Sang-Do Ha
Summary: The study found that peroxyacetic acid treatment was more effective in disinfecting murine norovirus compared to ultraviolet-C irradiation. Furthermore, sequential treatment with UV-C and PAA did not show a synergistic effect in reducing MNV-1 titers.
Article
Engineering, Environmental
Thi Minh Hong Nguyen, Jennifer Braunig, Rai S. Kookana, Sarit L. Kaserzon, Emma R. Knight, Hoang Nhat Phong Vo, Shervin Kabiri, Divina A. Navarro, Charles Grimison, Nicole Riddell, Christopher P. Higgins, Michael J. McLaughlin, Jochen F. Mueller
Summary: This study investigated the mobilization of PFASs in water-saturated soils using column experiments and assessed the feasibility of their remediation by soil desorption and washing. The results showed that shorter-carbon-chain PFASs can be readily removed by soil washing technologies, while longer-chain PFASs exhibit nonequilibrium sorption/desorption. The increasing contribution of hydrophobic interactions is suggested as the main driving factor of the nonequilibrium processes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Rai S. Kookana, Mike Williams, Adrienne Gregg, Adelle Semmler, Jun Du, Simon C. Apte
Summary: Spills of HF fluids and produced water can cause soil contamination, and HF fluids have a significant detrimental impact on soil microbial functions, especially on nitrogen cycling.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
John L. Rayner, Daniel Slee, Sam Falvey, Rai Kookana, Elise Bekele, Gavin Stevenson, Amanda Lee, Greg B. Davis
Summary: Relating laboratory leaching methods to field PFAS leaching is challenging. New laboratory tests can better reflect PFAS risks and the saturate-spin batch test is most analogous to in situ soil leaching.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Ilka Wallis, John Hutson, Greg Davis, Rai Kookana, John Rayner, Henning Prommer
Summary: This study developed and evaluated conceptual and numerical models to determine the migration ability of PFAS in the vadose zone under real field conditions. The results show that climate-driven physical flow processes have a dominant control on PFAS retention, with physico-chemical retention mechanisms adding further to PFAS retention.
Article
Engineering, Environmental
Mahyar Ghanadi, Melanie Kah, Rai S. Kookana, Lokesh P. Padhye
Summary: This review comprehensively analyzes the contribution of polymer-based materials (PBMs) as precursors of disinfection by-products (DBPs) in water and wastewater. The presence of PBMs can lead to the leaching of dissolved organic matter (DOM) and subsequent formation of DBPs upon disinfection. The quantity and type of DBPs formed depend on various factors such as the type of polymer, its concentration, its age, water salinity, and disinfection conditions.
Article
Environmental Sciences
Divina A. Navarro, Shervin Kabiri, Jonathan Ho, Karl C. Bowles, Greg Davis, Mike J. McLaughlin, Rai S. Kookana
Summary: In this study, the longevity and durability of different carbon-based sorbents in stabilizing PFAS-contaminated soils were investigated over a period of 4 years. The results showed that activated carbon (AC) sorbents were able to reduce PFAS leaching by at least 95%, while biochars were less effective with a reduction rate of at least 78%. Overall, AC sorbents were found to be superior to biochars in long-term PFAS stabilization.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Yue-Rui Huang, Si-Si Liu, Jin-Xin Zi, Sheng-Ming Cheng, Jun Li, Guang-Guo Ying, Chang-Er Chen
Summary: This study used an in situ tool, diffusive gradients in thin films (DGT), to investigate the distribution and exchange kinetics of five typical PFAS in four soils. The results showed a nonlinear relationship between PFAS masses in DGT and time, indicating that PFAS were partially supplied by the solid phase in all soils. A dynamic model called DGT-induced fluxes in soils/sediments (DIFS) was used to interpret the results and determine the distribution coefficients for the labile fraction (Kdl), response time (tc), and adsorption/desorption rates (k1 and k-1). The findings suggest that the availability of PFAS in soils is controlled by Kdl, while the release of PFAS from soils may be kinetically constrained, especially for more hydrophilic PFAS.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Xiao-Pei Li, Shu-Qing Qiu, Dong-Qiao Lei, Chen-Si Wang, Lingtian Xie, Guang-Guo Ying, Guo-Yong Huang
Summary: In this study, the ecotoxicological effects of Bisphenol 4-[1-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexyl] phenol (BPTMC) on marine medaka embryos were examined. Low concentrations of BPTMC stimulated certain developmental and behavioral effects, while higher concentrations led to inflammatory response and altered heart rate and swimming velocity. BPTMC also affected the concentrations of estrogen receptors, vitellogenin, and endogenous 17 beta-estradiol, as well as transcriptional levels of estrogen responsive genes in the embryos or/and larvae.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Charles Grimison, Emma R. Knight, Thi Minh Hong Nguyen, Nathan Nagle, Shervin Kabiri, Jennifer Braunig, Divina A. Navarro, Rai S. Kookana, Christopher P. Higgins, Michael J. McLaughlin, Jochen F. Mueller
Summary: This study aimed to evaluate the performance of a soil washing plant (SWP) inremediating a PFASs-contaminated soil with high clay content. The SWP utilized physical and chemical processes to fractionate soil particles and remove PFASs. The contaminated water was treated with GAC and ion-exchange resin for reuse within the SWP. The SWP achieved high removal efficiencies (97.1% for perfluorocarboxylic acids and 94.9% for perfluorosulfonic acids) and demonstrated effective transfer of PFAS mass to the wash solution and GAC.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Shervin Kabiri, Divina A. Navarro, Suhair Ahmed Hamad, Charles Grimison, Christopher P. Higgins, Jochen F. Mueller, Rai S. Kookana, Michael J. McLaughlin
Summary: The removal or immobilization of PFASs from water or soil using carbon-based sorbents is a cost-effective technique. This study evaluated the performance of 28 carbon-based sorbents and found that PAC, mixed mode carbon mineral material, and GAC were the most effective in sorbing PFASs. Surface area and surface charge were identified as the best indicators of sorbent performance for PFASs removal or immobilization.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Mike Williams, Grant Douglas, Jun Du, Jason Kirby, Rai Kookana, John Pengelly, Garth Watson, Karl Bowles, Greg Davis
Summary: The historical use of AFFF containing PFAS for fire-fighting activities has led to widespread infrastructure contamination, posing ongoing environmental risks. This study measured PFAS concentrations in a concrete fire training pad with historical AFFF use, revealing spatial variability throughout the pad. Surface chips and whole cores of concrete, including the underlying aggregate base, were collected for analysis. Despite variations in individual PFAS along the core depth profile, higher surface concentrations generally followed the water movement direction. The study highlights the presence of PFAS throughout the concrete, with variable concentrations across the profile.
Article
Engineering, Environmental
Jin-Ge Zhang, Wenjun Shi, Dong-Dong Ma, Zhi-Jie Lu, Si-Ying Li, Xiao-Bing Long, Guang-Guo Ying
Summary: Imidacloprid (IMI) and thiamethoxam (THM) exhibit negative effects on parental fish, but their intergenerational effects at environmentally relevant concentrations are still unclear. This study investigates the intergenerational effects by exposing F0 zebrafish to IMI and THM and examining the F1 generations. The results show that IMI and THM affect fecundity, gonadal development, sex hormones, and VTG levels in F0 zebrafish, and also influence sex hormones, heart rate, and spontaneous movement rate in F1 generation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Environmental Sciences
G. B. Douglas, J. L. Vanderzalm, M. Williams, J. K. Kirby, R. S. Kookana, T. P. Bastow, M. Bauer, K. C. Bowles, D. Skuse, G. B. Davis
Summary: Per- and polyfluoroalkyl substances (PFAS) contamination in concrete and asphalt, particularly in airfields and paved firefighting training surfaces, is a global issue. This review identifies 24 knowledge gaps and challenges in characterizing and managing PFAS in these materials, including extraction/analysis methods, distribution within constituents, leachability, and reuse options.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Soil Science
Rai S. Kookana, Divina A. Navarro, Shervin Kabiri, Mike J. McLaughlin
Summary: Poly- and perfluoroalkyl substances (PFAS) have been widely used worldwide in various industries for the past seven decades. Due to their stability and mobility, PFAS can be found everywhere in the environment. However, the sorption-desorption behavior of PFAS in saturated and unsaturated soils is not well understood due to their complex chemical properties.
Correction
Chemistry, Analytical
Prashant Srivastava, Mike Williams, Jun Du, Divina Navarro, Rai Kookana, Grant Douglas, Trevor Bastow, Greg Davis, Jason K. Kirby
ANALYTICAL METHODS
(2022)
