Article
Acoustics
Cherie C. Y. Wong, Jason L. Raymond, Lillian N. Usadi, Zhiyuan Zong, Stephanie C. Walton, Adam C. Sedgwick, James Kwan
Summary: Sonochemistry utilizes ultrasound to generate reactive radicals, offering a green alternative for hydrogen production, wastewater treatment, and chemical synthesis. Conventional sonochemical reactors often have design limitations resulting in low efficacy and slow reaction kinetics. A novel reactor design was constructed, creating intense localized high pressure amplitudes capable of spontaneous cavitation, leading to significantly higher hydroxyl radicals production rate and sonochemical efficiency.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Materials Science, Ceramics
Shuyuan Li, Wenjie Zhang, Zhao Lv, Yue Zhang
Summary: ZnTiO3 supported on quartz microspheres reduces aggregation and enhances photocatalytic activity. Support on quartz microspheres increases the bandgap energy of ZnTiO3. The support has a significant effect on pore volume and surface area. The support reduces hole electron recombination efficiency. Supported ZnTiO3 exhibits superior photocatalytic activity compared to pure ZnTiO3.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Umesh S. Jonnalagadda, Qianwenhao Fan, Xiaoqian Su, Wen Liu, James J. Kwan
Summary: This study investigated ultrasound-responsive structured AuPd/TiO2 materials and utilized their ability to stabilize gas bubbles on the surface to enhance cavitation events near the catalytic active site for promoting chemical reactions. The results showed that the addition of AuPd/TiO2 materials could increase the production of benzaldehyde.
Article
Environmental Sciences
Gong Cheng, Yibo Zhang, Lei Sun, Jing Wan, Zhang Li, Chenyuan Dang, Jie Fu
Summary: The combination of MWUV and ME systems showed a synergistic effect in degrading reactive brilliant red X-3B. The presence of Fe3+ enhanced the generation of center dot OH, improving the photocatalytic efficiency. Lowering the initial solution pH and increasing iron filing dosage and dissolved oxygen concentration were beneficial for enhancing the degradation efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Review
Chemistry, Multidisciplinary
Preety Gupta, S. Suresh, Jay Mant Jha, Fawzi Banat, Mika Sillanpaa
Summary: The efficient and cost-effective removal of polycyclic aromatic hydrocarbons (PAHs) can be achieved through combined cavitation and oxidation processes. Various methods such as sonochemistry, biodegradation, photodegradation, Fenton oxidation, ozone oxidation, and photochemical oxidation have been reviewed for PAH removal. Factors controlling cavitation under sonochemical irradiation, the performance of different reactors, and the influence of gas sources on degradation efficiency have been discussed. Further research has shown that the reduction of PAHs can be significantly improved under certain conditions and with the use of specific gases.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Environmental Sciences
Jihong Wang, Jie Wang, Rongfang Yuan, Jiandong Liu, Zehui Yin, Tianci He, Mingran Wang, Fangshu Ma, Beihai Zhou, Huilun Chen
Summary: This study investigated the degradation of acid red 73 by the combination of hydrodynamic cavitation and ozone. The results showed that the HC + O-3 technology was effective in degrading azo dyes and the degradation mechanism was revealed. The optimal operation parameters were also determined.
ENVIRONMENTAL RESEARCH
(2022)
Article
Acoustics
Nadzeya Brezhneva, Nikolai Dezhkunov, Sviatlana A. Ulasevich, Ekaterina Skorb
Summary: The investigation of cavitation activity during ultrasonic treatment of magnesium particles revealed that the characteristics of cavitation zone may vary depending on the concentration of magnesium particles in the suspension and the nature of the medium. Scanning electron microscopy, X-ray diffraction analysis, and thermal analysis were used to characterize ultrasonically treated magnesium particles, showing the presence of magnesium hydroxide and magnesium hydride in different dispersed media. Furthermore, the incorporation of magnesium hydride in the magnesium matrix was found to be possible by adjusting the conditions of ultrasonic treatment. Additionally, the reactivity of magnesium was confirmed by measuring cavitation activity in various dispersed media.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Energy & Fuels
Kewen Peng, Shouceng Tian, Yiqun Zhang, Wanjun Qu, Qianxi Wang
Summary: This study examines the behavior of radicals in the scavenging process and quantifies the scavenging efficiency of terephthalate in the high-power ultrasound oxidation process. It is found that the small mass diffusivity of terephthalate limits its scavenging efficiency, resulting in a maximum radical trapping efficiency below 30%.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Review
Food Science & Technology
Ahmed Taha, Taha Mehany, Ravi Pandiselvam, Shahida Anusha Siddiqui, Nisar A. Mir, Mudasir Ahmad Malik, O. J. Sujayasree, Krishna Chaitnaya Alamuru, Anandu Chandra Khanashyam, Federico Casanova, Xiaoyun Xu, Siyi Pan, Hao Hu
Summary: There is a growing interest in using green technologies in the food industry. Ultrasound, as a green processing technique, has great potential in various food applications. It can be used in assisted food processing, structure and property modification, beneficial food reactions, food safety, as well as waste disposal and environmental protection.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2022)
Article
Biochemical Research Methods
Theodorus W. J. Gadella, Laura van Weeren, Jente Stouthamer, Mark A. Hink, Anouk H. G. Wolters, Ben N. G. Giepmans, Sylvain Aumonier, Jerome Dupuy, Antoine Royant
Summary: We have evolved mScarlet3, a cysteine-free monomeric red fluorescent protein, with fast and complete maturation, high brightness, quantum yield (75%) and fluorescence lifetime (4.0 ns). The crystal structure of mScarlet3 reveals a barrel rigidified at one of its heads by a large hydrophobic patch of internal residues. mScarlet3 performs well as a fusion tag, shows no apparent cytotoxicity, and outperforms existing red fluorescent proteins as a Forster resonance energy transfer acceptor and as a reporter in transient expression systems.
Article
Acoustics
Grzegorz Matyszczak
Summary: This article proposes a laboratory class on sonochemistry that aims to introduce students to the fundamental aspects and applications of sonochemistry. The class covers both qualitative and quantitative analysis, allowing students to conduct and observe sonochemical reactions, measure ultrasound power, calculate sonochemical efficiency, and learn about the sonocatalytic effect.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Kezhen Qi, Chunqiang Zhuang, Manjie Zhang, Peyman Gholami, Alireza Khataee
Summary: This review highlights the application of sonochemical synthesis in the preparation of photocatalysts and discusses the sonochemical degradation of pollutants. The progress and future perspective of sonochemical synthesis are summarized, calling for more attention to the research on sonochemical synthesis of materials and promoting its commercialization.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Wendi Xu, Qing Wang, Wenjie Zhang, Haolun Li
Summary: Polyethylene glycol templates with different molecular weight were used to synthesize and improve the porous structure of samarium titanate. The use of polyethylene glycol inhibited the aggregation of particles during calcination and reduced the crystal volume of samarium titanate. The activity of the materials was strongly influenced by the molecular weight of polyethylene glycol.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Chaochen Fu, Xiangyu Chen, Benyi Xiao, Junxin Liu
Summary: The effects of three typical chemical conditioners, namely polyaluminium chloride (PAC), polyferric sulfate (PFS), and polyacrylamide (CPAM), on the adsorption performances of sludge biochar were studied. CPAM and PAC increased the surface area and adsorption capacity of biochar, while PFS decreased them. The adsorption of X-3B onto the biochar was influenced by various factors and fitted well with the pseudo-second-order model and the Langmuir isotherm model. The conditioners reduced the total cost of biochar preparation, with PAC being the preferred choice.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Polymer Science
Daniela Suteu, Alexandra Cristina Blaga, Ramona Cimpoesu, Adrian Catalin Puitel, Ramona-Elena Tataru-Farmus
Summary: This study explored the use of natural polymers to immobilize microbial biomass in composites for easier handling. The encapsulated residual microbial biomass in sodium alginate showed potential as an efficient biosorbent for removing reactive organic dyes from aqueous solutions. Experimental data suggested that the biosorption process was likely physical, spontaneous, and exothermic, making it suitable for treating effluents containing moderate concentrations of dyes.
Article
Materials Science, Multidisciplinary
Mengjie Zhang, Weilin Guo, Meng Ren, Xiaohua Ren
Article
Environmental Sciences
Huaisu Guo, Shengnan Su, Yang Liu, Xiaohua Ren, Weilin Guo
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Engineering, Chemical
Xiaohua Ren, Yang Liu, Weilin Guo
SEPARATION AND PURIFICATION TECHNOLOGY
(2020)
Article
Engineering, Chemical
Leixin Hu, Xiaohua Ren, Min Yang, Weilin Guo
Summary: The study investigated the catalytic performance of three types of magnetite nanoparticles with different exposed crystal facets for tetracycline degradation. The results showed that MNPs with {111} facet exhibited superior catalytic activity compared to {1 1 0} and {1 0 0} facets. The catalytic performance was determined by hydroxide, physically adsorbed H2O, and transformations of Fe(II)/Fe(III) on the MNPs{111} surface, with XPS analysis supporting the findings.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Min Yang, Xiaohua Ren, Leixin Hu, Weilin Guo, Jinhua Zhan
Summary: This study utilized goethite with different exposed facets as catalysts for PS activation, finding that more {021} facet exposed goethite exhibited better catalytic performance due to its facilitation of generating active radicals to drive the degradation process. Advanced oxidation processes based on the activation of persulfate by facet-dependent goethite provide valuable insights for environmental catalysis.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Xiaoyu Lv, Yanqiu Leng, Rongyao Wang, Yan Wei, Xiaohua Ren, Weilin Guo
Summary: In this study, ferrocene-based metal-organic frameworks with different transition metals were synthesized and used as catalysts for persulfate activation. The effects of catalyst dosage, persulfate concentration, and pH on the degradation of acid orange 7 were investigated. The results showed that cobalt-based ferrocenyl metal-organic framework microspheres exhibited the best catalytic performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Chemical
Rongyao Wang, Shengnan Su, Xiaohua Ren, Weilin Guo
Summary: A novel NiFeLa{HPW}-LDH catalyst was synthesized and exhibited superior catalytic performance for PMS activation compared with the precursor. The degradation process was mainly driven by SO4· and HO· as reactive radicals, with the formation of Ni(II)/Fe(II)/La(III) complexes and subsequent redox cycles of Ni/Fe/La playing vital roles in generating active radicals. The intercalated HPW also played a significant role in electron transfer during the process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Yan Wei, Yanqiu Leng, Rongyao Wang, Xiaohua Ren, Weilin Guo
Summary: A series of LaNiO3 perovskite nanoparticles with different morphologies were prepared and used as catalysts for peroxydisulfate activation. Spheres-like LaNiO3 exhibited the highest catalytic activity, likely due to its largest specific surface area, higher proportion of reductive Ni2+, and higher electron transfer ability. Radical scavenging experiments and EPR revealed the production of sulfate radicals and hydroxyl radicals during the oxidation process, and possible mechanisms of PDS activation and AO7 degradation were proposed. The prepared LaNiO3 perovskites also showed excellent reusability and stability.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Rongyao Wang, Yanjun Yu, Ruijuan Zhang, Xiaohua Ren, Weilin Guo
Summary: Understanding the morphology-dependence of NiFe-LDH catalysts on their catalytic activity is important for the rational design of high-efficiency catalysts. In this study, three different NiFe-LDH catalysts with regulable oxygen vacancies were synthesized and their abilities to activate persulfate for the degradation of acid orange 7 were investigated. The results showed that the NiFe-LDH catalyst with a hollow structure exhibited the highest activity, attributed to the highly accessible surface areas, higher intrinsic activity of the exposed crystal planes, and abundant oxygen vacancies.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Jiangshan Kuai, Xiusen Geng, Xiaohua Ren, Weilin Guo
Summary: In this study, a self-standing cathode material was prepared by in situ growing bismuth oxychloride on carbon felt, and it was used for the electro-Fenton degradation of tetracycline. The hybrid electrode exhibited excellent conductivity and abundant active sites, leading to the almost complete degradation of tetracycline within 90 minutes.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Chengjie Qu, Xiaoyu Lv, Rongyao Wang, Ruijuan Zhang, Weilin Guo
Summary: A series of FeMn bimetallic ferrocene-based metal-organic frameworks were synthesized and Fe4Mn6-Fc-MOFs demonstrated superior catalytic activity and electron transfer capability, showing great potential for water decontamination.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Xiusen Geng, Jiangshan Kuai, Xiaohua Ren, Weilin Guo
Summary: In this study, hybrid electrodes composed of nickel-iron layered double hydroxide anchored on activated carbon fiber were synthesized and applied in capacitive deionization for phosphate ions removal. The adsorption performance of the hybrid electrodes was compared, and it was found that increasing the loading capacity of nickel-iron layered double hydroxide enhanced the adsorption capacity. The adsorption kinetics and isotherms analysis showed that the adsorption capacity increased with applied voltage and followed pseudo-first-order kinetics and Langmuir isotherms. The pH during the adsorption process also affected the adsorption of phosphate ions.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Environmental
Hong Liu, Ruibao Jia, Zhenqi Du, Xiaodong Xin, Mingquan Wang, Shaohua Sun, Weilin Guo, Xiang Li, Li Liu
Summary: This study provides detailed information on the characteristics, source apportionment, and health risk assessment of perfluoroalkyl acids (PFAAs) in surface drinking water in Shandong Province, eastern China. The study identifies PFOA as the dominant pollutant and determines different sources of contamination during wet and dry seasons. Although the health risks through drinking water exposure are negligible for different age groups, children aged 3-6 years are most vulnerable. The findings of this study are important for decision-makers to monitor and mitigate PFAA pollution.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Rongyao Wang, Xiaohua Ren, Weilin Guo
Summary: This study presents a robust catalytic module for industrial water treatment, which features lower energy consumption, fast liquid transport, and simultaneous highly catalytic oxidizability. The module consists of cerium oxide loaded layered double hydroxide composites anchored on a three-dimensional porous polyvinylidene fluoride framework. It exhibits dual functions of filtration and oxidation, showing promising removal efficiency for tetracycline in conjunction with peroxymonosulfate. The module is highly efficient in removing various contaminants and has wide practical applicability in tap water and reservoir.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Min Yang, Xiaohua Ren, Leixin Hu, Haihong Zhou, Weilin Guo
Summary: Goethite is the most common iron oxide mineral in soils, and the adsorption of organic pollutants on goethite has a significant impact on their fate and transport in the environment. This study found that goethite samples with a higher proportion of {021}/{110} facets exhibited better adsorption capacity due to the presence of more reactive singly coordinated sites on the {021} facet. Additionally, the adsorption of CIP on {021} and {110} facets was shown to involve the formation of a tridentate complex through bridge coordination, H-bonding, and bidentate chelate complex formation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)