Article
Engineering, Chemical
Jordi H. Badia, Carles Fite, Roger Bringue, Fidel Cunill, Javier Tejero
Summary: The kinetics of the simultaneous synthesis of ETBE and BTBE over A35 catalyst in the liquid phase was investigated. Various kinetic modeling approaches were compared, and it was found that empirical power-law modeling provided the best fit, while mechanistic modeling explained the reaction mechanisms.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Engineering, Chemical
Min Chen, Chengna Dai, Gangqiang Yu, Ning Liu, Ruinian Xu, Ning Wang, Biaohua Chen
Summary: This study proposes and systematically investigates the technology for absorbing MTBE with ionic liquids, from the molecular level to system scale. The research demonstrates that ILs are potential absorbents, and IL-based mixed absorbents may be a better strategy for achieving highly efficient absorption of MTBE, reducing product gas loss and energy consumption.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Applied
Hui Jiang, Hefang Wang, Xiaofei Ma, Kai Shao, Cui Wang
Summary: A series of HPW supported on AHFs modified H beta zeolite catalysts were prepared, which showed improved catalytic performance and stability compared to the untreated catalysts.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Polymer Science
Abdul Shakoor Shar, Ningning Wang, Tianyu Chen, Xiaoying Zhao, Yunxuan Weng
Summary: This study investigates the use of lignin and low-viscosity epoxy resins as modifiers for poly (lactic acid) (PLA) to improve its thermal, mechanical, and barrier properties. The addition of lignin resulted in an increase in PLA's degradation temperature, crystallinity, tensile strength, and oxygen barrier. The epoxy resins acted as compatibilizers and plasticizers, reducing the glass transition, crystallization, and melting temperatures of the PLA/lignin composites and improving their oxygen barrier properties. These modified PLA/lignin composites show potential for green packaging applications.
Article
Microbiology
Vijayalakshmi Gunasekaran, Nuria Canela, Magda Constanti
Summary: A bacterial consortium capable of degrading ETBE was enriched and isolated, and the metaproteomic study revealed the effects of ETBE on the metabolism and response of the consortium.
Article
Engineering, Chemical
Ting Wang, Xiao-Xing Huang, Lu-Lu Huang, Li-Guang Wu, Dong-Feng Zhu, Guo-Qin Wang, Xiao-Jia Jiang
Summary: In order to reduce emissions in industries such as automotive coatings, the separation and recovery of ethylene glycol butyl ether (EB) from wastewater is crucial. This study focused on using nanomaterials as additives to construct mixed matrix membranes (MMMs) for pervaporation separation of EB. The addition of nanomaterials improved the affinity and diffusion process of EB in MMMs, enhancing the separation performance. Surface modification of nanomaterials with polyethylene glycol (PEG) further enhanced the affinity and swelling performance, resulting in improved membrane flux and selectivity. The MMMs with PEG2000-grafted nanomaterials showed the best performance and stability for separating EB compared to commercial membranes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Tingyu Hua, Shanshan Li, Ling Wang, Wei Yan
Summary: In this study, three strains with high adaptability and different degrading characteristics to MTBE were cultured, and kinetic models were established to simulate the biodegradation process of MTBE by the strains at different concentrations. The study found that a mixed consortium of the three strains significantly enhanced the removal efficiency and rate of MTBE, especially at high concentrations. Furthermore, the mixed consortium showed strong adaptability and effectively removed other gasoline components. This research provides support for the use of a mixed consortium to remediate MTBE-contaminated environments.
APPLIED SCIENCES-BASEL
(2023)
Article
Environmental Sciences
Xinyu Zhao, Chuanyan Zhang, Qiuling Dang, Beidou Xi
Summary: This study investigates the effects of phenol monomers on the redox characteristics of humic acid during straw composting. The researchers found that certain phenol monomers were significantly related to the electron transfer capacity, electron donating capacity, and electron accepting capacity of humic acid. They also identified that NH4+-N and NO3--N were the main factors linking to these phenol monomers and the redox characteristics of humic acid. This study provides new insights for the understanding of the redox capacity of humic acid in traditional composting and the utilization of straw compost in contaminated environments.
ENVIRONMENTAL POLLUTION
(2022)
Article
Green & Sustainable Science & Technology
Seyedeh Pegah Jalilian Ahmadkalaei, Suyin Gan, Hoon Kiat Ng, Suhaimi Abdul Talib
Summary: This study investigated the role of humic acid in Fenton reaction for the degradation of diesel in soil, finding that the impact varies depending on the molecular weight of the contaminants. Increasing humic acid dosage enhances the positive effects on total TPH degradation, with an optimal dosage of 150 mg/l. Removal efficiencies at higher pH levels depend on the molecular weight of TPH contaminants.
ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY
(2021)
Article
Energy & Fuels
Iwan Ridwan, Charoen Chinwanitcharoen, Kazuhiro Tamura
Summary: The addition of water to supercritical tert-butyl methyl ether enhances biodiesel yield, with the optimal conditions being 25 wt% water addition, 300 degrees C temperature, 20 MPa pressure, and 30 min space time resulting in a 77.39 wt% biodiesel yield. The reaction rate is accelerated by water, acting as a catalyst, and the supercritical reaction is found to be endothermic, endergonic, and non-spontaneous based on thermodynamic parameters.
Article
Environmental Sciences
Qiqi Zhu, Shanshan Zhu, Qiyao Li, Yun Wang, Dongxu Zheng, Chunjiang Chen, Naqi Ruan, Haiqiong Chen, Haoni Yan, Han Lin, Ren-Shan Ge
Summary: Exposure to MTBE during late puberty compromises the development of Leydig cells in male rats by inhibiting cell proliferation, inducing mitochondrial autophagy and apoptosis, and indirectly stimulating Sertoli cells to secrete anti-Mullerian hormones, resulting in a reduced number of Leydig cells.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Chemistry, Multidisciplinary
Dejin Zhang, Shu Sun, Qi Wu, Yong Xie, Chengcheng Liu, Cong Wang, Keying Zhang, Hongwei Shi, Xin Zhuo, Hongyan Wang
Summary: A new catalyst ([HIMA] OTs) was synthesized and a efficient and easily recyclable ionic liquid catalytic system was established. The feasibility of the catalyst was demonstrated through calculation of thermodynamic parameters and recovery experiments. It provides a potential application in industrial synthesis of tert-butylphenol.
Article
Chemistry, Analytical
Zhaoxia Shi, Ling Xia, Gongke Li, Yufei Hu
Summary: Pt/Au NPs@Co3O4 composites with a hollow dodecahedron three-dimensional structure were successfully synthesized, and a CTL sensor based on this composite was established for the accurate and rapid detection of MSBE in MTBE. The experimental results demonstrated that the sensor exhibited strong specificity and sensitivity, and the analytical results were consistent with those obtained using traditional gas chromatography.
Article
Engineering, Environmental
Xiaomeng Yang, Zhen Zhang, Puhua Shao, Armin Rezayan, Dan Wu, Chunbao Charles Xu, Jianshe Wang, Yongsheng Zhang
Summary: In this work, the effect of bromination of supported Ni nanoparticles on the phenol selectivity during the hydrogenolysis of diphenyl ether (DPE) was investigated. The bromination process resulted in enhanced phenol selectivity due to the deactivation of continuous Ni sites for benzene ring hydrogenation and the facilitation of the hydrogenolysis of C-O aryl ether bonds. The selective poisoning and electronic effects introduced by bromination synergistically increased the yield of phenols during the hydrogenation of real lignin.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Ao Chen, Daohong Liao, Changle Chen
Summary: A novel diaryl-methyl aniline with multiple tert-butyl groups and its derivatives were prepared in this study, showing excellent solubility and catalytic properties with nickel catalysts in aliphatic hydrocarbon solvents, potentially bridging academic research with practical applications in polymerization.
CHINESE JOURNAL OF CHEMISTRY
(2022)
Article
Engineering, Environmental
Priit Tikker, Niina Dulova, Iakov Kornev, Sergei Preis
Summary: Experimental research found that in acidic media, the best oxidation effect of oxalate was achieved at a molar ratio of 1:0.5 between oxalate and persulfate when using gas-phase pulsed corona discharge (PCD). However, the synergism of PCD/PS combination decreased with increasing initial pH of the treated solution.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Juri Bolobajev, Daniil Gornov, Iakov Kornev, Sergei Preis
Summary: Gas-phase pulsed corona discharge (PCD) is an energy-efficient water treatment technology that achieves highly efficient oxidation of organic pollutants in water, with an oxidation efficiency at least two times higher than that of ozonation. Bicarbonates reduce oxidation efficiency by scavenging hydroxyl radicals. Identifying degradation intermediates has provided insight into the predominant OH-radical reactions involved in dehalogenation, electrophilic attack of aromatic ring, ether bond cleavage, and cyclisation.
JOURNAL OF ELECTROSTATICS
(2021)
Article
Engineering, Electrical & Electronic
Vladimir Derevshchikov, Niina Dulova, Sergei Preis
Summary: The study experimentally investigated the energy-efficient gas-phase pulsed corona discharge for the oxidation of aqueous pharmaceuticals, showing promising results for ibuprofen, diclofenac, metformin, and tramadol. The oxidation energy efficiency was found to be influenced by alkaline pH, starting concentrations, and the molecular structure and hydrophobicity of the medications. The gas-phase pulsed corona discharge method demonstrated higher energy yields compared to other advanced oxidation processes (AOPs).
JOURNAL OF ELECTROSTATICS
(2021)
Article
Engineering, Electrical & Electronic
Liina Onga, Roman Boroznjak, Iakov Kornev, Sergei Preis
Summary: Oxidation of waterborne organic compounds by gas-phase pulsed corona discharge (PCD) offers substantial energy efficiency benefits, with the addition of surfactant sodium dodecyl sulphate (SDS) impacting the efficiency as a decelerating, neutral, or accelerating effect. The research aims to determine the causal connection between the molecular structure of pollutants and the effects of SDS addition using computational chemistry modeling and experimental verification in PCD treatment. Effects of SDS addition were predicted and confirmed experimentally for selected textile dyes and pharmaceuticals.
JOURNAL OF ELECTROSTATICS
(2021)
Article
Chemistry, Physical
Maarja Kask, Marina Krichevskaya, Sergei Preis, Juri Bolobajev
Summary: The study explores the oxidation of aqueous toluene by gas-phase pulsed corona discharge (PCD) and subsequent photocatalytic treatment of exhaust air, showing high energy efficiency. The results have the potential application in closed-loop energy-saving ventilation systems.
Article
Environmental Sciences
Liina Onga, Eneliis Kattel-Salusoo, Marina Trapido, Sergei Preis
Summary: This study experimentally investigated the oxidation of the widely used anti-inflammatory corticosteroid dexamethasone (DXM) using gas-phase pulsed corona discharge (PCD). The results showed that PCD had higher energy efficiency compared to ozonation and was effective in oxidizing DXM at different pH levels and concentrations. Radical oxidation was identified as the dominant transformation pathway for DXM. However, high concentrations of DXM during PCD treatment may lead to increased toxicity, which requires further investigation.
Article
Thermodynamics
Roman Tabakaev, Victor Kahn, Yury Dubinin, Maxim Rudmin, Nikolay Yazykov, Artem Skugarov, Eduard Alekseenko, Alexander Zavorin, Sergei Preis
Summary: This study aims to convert coal slack into high-strength fuel pellets using a biomass binder. Experimental results show that pellet moulding under suitable process parameters can meet the fuel standards.
Article
Energy & Fuels
Alexander Astafev, Ivan Shanenkov, Kanipa Ibraeva, Roman Tabakaev, Sergei Preis
Summary: The global energy industry is increasingly using carbon-neutral biomass, and pyrolysis is a common method for processing biomass into valuable energy products. However, the heat demand limits the applications of pyrolysis. This study aimed to make the pyrolysis of Siberian pine nutshell autothermic by using exothermic pyrolysis reactions under selected operation conditions.
Article
Environmental Sciences
Romana Kopecka, Liina Onga, Sergei Preis
Summary: The experimental study of pulsed corona discharge as an oxidation method for naproxen showed high energy efficiencies under various operation conditions. The presence of surfactants in treated solutions appeared to enhance the degradation rate.
Article
Engineering, Environmental
Zemin Li, Tuo Wei, Jiamin Pan, Yitong Liang, Zixin Ban, Xiong Ke, Qiaoping Kong, Guanglei Qiu, Yun Hu, Sergei Preis, Chaohai Wei
Summary: This study investigated the physicochemical pre- and post-treatment of highly polluting coking wastewater for the removal of refractory compounds and recovery of high-energy substances/components. An economic optimization model was proposed for cost-effective and sustainable treatment technology. The results showed that powdered activated carbon (PAC) could effectively remove COD in the bio-treated wastewater and the spent PAC could be reused in the pre-treatment stage to improve COD removal. This study is of great importance for wastewater treatment and energy recovery.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Physical
Dmitri Nikitin, Balpreet Kaur, Sergei Preis, Niina Dulova
Summary: Antibiotics, especially vancomycin, are detected frequently in the environment and contribute to the development of antibiotic-resistant genes in bacteria. Degradation and mineralization of vancomycin were studied using UV photolysis, pulsed corona discharge (PCD), and combinations of these methods with extrinsic oxidants. The combinations showed effective degradation of vancomycin, with higher rates observed in alkaline conditions. Different oxidants had varying oxidation rates, with hydrogen peroxide (HP) being the most efficient in combination with UV photolysis, and peroxymonosulfate (PMS) and peroxydisulfate (PDS) being more efficient in combination with PCD. The combined treatment of PCD and oxidants showed promising results in terms of TOC removal and energy efficiency improvement.
Article
Chemistry, Multidisciplinary
Jekaterina Sydorenko, Arvo Mere, Malle Krunks, Marina Krichevskaya, Ilona Oja Acik
Summary: This study focuses on the development of low-material-quantity, transparent, anatase TiO2 nanoparticle free thin films as photocatalytic materials and their photocatalytic activity under UV-A and VIS light for indoor air pollution control, showing promising potential for VOC removal.
Article
Engineering, Environmental
Maarja Kask, Marina Krichevskaya, Sergei Preis, Juri Bolobajev
Summary: Hazardous nitrosamines in drinking water disinfection pose serious health and environmental concerns. Pulsed corona discharge (PCD) showed significantly higher energy efficiency compared to ozonation in N-nitrosodiethylamine (NDEA) degradation. While ozonation efficiency improved with H2O2 addition, PCD remained superior in energy efficiency and oxidation acceleration of NDEA.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
