Article
Environmental Sciences
Nastaran Azizollahi, Ali Fatehizadeh, Hamidreza Pourzamani, Ensiyeh Taheri, Tejraj M. Aminabhavi
Summary: This research explores the degradation of 2,4-dichlorophenol (2,4-DCP) using lab-scale hydrodynamic cavitation (HC) with the addition of zero-valent iron (Fe-0) as a catalyst for sulfate radical (SO4 center dot-) generation. The degradation efficiency was higher at acidic pH and depended on the Fe-0 and sulfite (SO32-) dose. Under optimal conditions, the Fe-0/HC/sulfite approach significantly enhanced the degradation efficiency compared to HC alone. (OH)-O-center dot and SO4 center dot- radicals played a dominant role in the degradation process. The turbulence model showed that increasing inlet pressure intensified bubble collapse due to higher turbulence tension.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Acoustics
Nastaran Azizollahi, Ensiyeh Taheri, Mohammad Mehdi Amin, Arvin Rahimi, Ali Fatehizadeh, Xun Sun, Sivakumar Manickam
Summary: In this research, hydrodynamic cavitation (HC) and zero-valent iron (ZVI) were used to generate sulfate radicals for the degradation of Direct Red 83 (DR83). The degradation efficiency of HC/ZVI/sulfite process was highly dependent on the solution pH and the dosage of ZVI and sulfite. The HC/ZVI/sulfite treatment showed a significantly higher degradation constant and contribution of radicals compared to the individual processes.
ULTRASONICS SONOCHEMISTRY
(2023)
Review
Engineering, Multidisciplinary
Haoxuan Zheng, Ying Zheng, Jesse Zhu
Summary: Hydrodynamic cavitation is a promising technology for process intensification, with high energy efficiency, cost-effective operation, ability to induce chemical reactions, and scale-up possibilities. This article provides an extensive review of the fundamentals, design, and applications of hydrodynamic cavitation, including a comparison of stationary and rotational reactors, discussion of design parameters and reactor performance, and evaluation of commercial cavitation reactors. The unique features of hydrodynamic cavitation have been widely applied in various chemical reactions and physical processes, and the roles of radicals and gas bubble implosion are thoroughly discussed.
Article
Engineering, Environmental
Sebastien J. De-Nasri, Sanjay Nagarajan, Peter K. J. Robertson, Vivek V. Ranade
Summary: The paper discusses the quantification of hydroxyl radicals using coumarin as a probe to indirectly measure the concentration of hydroxylated product 7OHC for assessing the performance of advanced oxidation processes (AOPs). The study found that under different process operating conditions, the amount of OH radicals utilized was 25 times higher for photocatalysis compared to acoustic cavitation.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Analytical
Chunwei Shi, Fan Yang, Xiaogang Qu
Summary: In order to degrade Congo red quickly and easily, an ultrasonic method was used to degrade Congo red solution in a rotating flow field. This method significantly increased the concentration of hydroxyl radicals in the solution, promoting the reaction rate, and achieving a degradation rate of over 99%.
Article
Acoustics
Qiong Wu, Haiyun Luo, Hao Wang, Zhigang Liu, Liyang Zhang, Yutai Li, Xiaobing Zou, Xinxin Wang
Summary: A novel Hydrodynamic Cavitation-Assisted Oxygen Plasma (HCAOP) process has been developed for enhancing the production and utilization of hydroxyl radicals (& sdot;OH) in the degradation of organic pollutants. The study systematically investigated the fluid characteristics and discharge properties of the gas-liquid two-phase body in the venturi tube. The effects of cavitation intensity, oxygen flow rate, and power polarity on discharge characteristics and & sdot;OH production were evaluated. The HCAOP process showed significant potential for industrial applications with its high efficiency in degrading pollutants.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Environmental Sciences
Xingchen Yang, Guoce Yu, Lejin Xu, Jianlong Wang
Summary: This study investigates the degradation of spent radioactive organic solvents using synthesized nanoscale zero-valent iron as a heterogeneous Fenton-like catalyst. The performance of the catalyst and the degradation mechanism were studied, and the possible intermediates were analyzed.
Article
Acoustics
Ajinkya Pandit, Varaha P. Sarvothaman, Vivek V. Ranade
Summary: This study investigates the extreme conditions created by cavitation events and their effects on chemical and physical processes, focusing on the collapse temperatures and pressures as well as the hydroxyl radical generation rate. A new equation is proposed to evaluate the impact pressure of water jets, and important issues such as the onset of cavitation and chaotic solutions are discussed. The methodology and results presented in this study will be useful for optimizing and further investigating a wide range of applications based on acoustic and hydrodynamic cavitation.
ULTRASONICS SONOCHEMISTRY
(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
Engineering, Chemical
Ritesh Patidar, Vimal Chandra Srivastava
Summary: The review focuses on combined sono-photolysis techniques for the degradation of persistent organic pollutants, showing that the synergistic effect of ultrasound and ultraviolet light can effectively enhance the degradation efficiency of toxic pollutants. The physical feature of ultrasound facilitates intense mixing of the pollutant, allowing UV light to penetrate deeply and accelerate oxidation reactions, leading to improved degradation of pollutants.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Acoustics
Vladimir O. Abramov, Anna V. Abramova, Giancarlo Cravotto, Roman V. Nikonov, Igor S. Fedulov, Vladimir K. Ivanov
Summary: In the past two decades, the scientific community and industry have made significant efforts to develop environmental protection technologies. Investigating various physico-chemical treatments for water scarcity led to the observation of synergistic effects in hyphenated techniques. A new prototype technology combining hydrodynamic cavitation and plasma discharge has been successfully applied to water disinfection and organic pollutant degradation, demonstrating its scalability.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Engineering, Environmental
Kirill Fedorov, Xun Sun, Grzegorz Boczkaj
Summary: Hydrodynamic cavitation technology is gaining interest in water treatment for eliminating organic pollutants, with hybrid techniques like HC-PS and HC-PMS showing promising results in degrading BTEX. The molar ratio of oxidant to BTEX equal to 5 is favorable for both cases, allowing for efficient degradation of contaminants.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Huan Zhang, Bing Wang, Chunyang Gao, Tianju Zhu, Mingyang Xiong, Hongyang Ren
Summary: This study explores the synergistic effect of acoustic cavitation and microbubbles ozonation (US/O-3) on the degradation of hydrolyzed polyacryamide (HPAM). Various factors affecting HPAM removal are investigated, and the degradation mechanism and possible pathway are identified.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Engineering, Chemical
Ye Li, Yangyang Ding, Hongbin Wei, Shaolin Li
Summary: The dense microscale zero-valent iron (mZVI) particles can face hydrodynamic problems in wastewater treatment unit operations, but can be improved by modifying with inorganic floc. This modification method enhances the mixing, settleability, and fluidity of mZVI in concentrated form, making it more adaptable to large-scale wastewater treatment applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Vivek S. Kore, Sampatrao D. Manjare, Suyogkumar Taralkar
Summary: This study evaluates the effectiveness of a hybrid advanced oxidation process (AOP) for the treatment of textile wastewater. The results show that the combination of hydrodynamic cavitation (HC), ultraviolet irradiation (UV), and potassium peroxymonosulfate (PMS) is the most effective treatment process.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Analytical
Zhen Yuan, Minghao Sui, Jianrui Yang, Pan Li, Zhiran Liu, Li Sheng
ENVIRONMENTAL CHEMISTRY
(2017)
Article
Engineering, Environmental
Yanan Liu, Han Zhang, Jihui Sun, Jinxia Liu, Xue Shen, Jiaxun Zhan, Ai Zhang, Stephanie Ognier, Simeon Cavadias, Pan Li
CHEMICAL ENGINEERING JOURNAL
(2018)
Article
Engineering, Chemical
Pan Li, Chao Wu, Yunxiu Yang, Yue Wang, Shuili Yu, Shengji Xia, Wenhai Chu
SEPARATION AND PURIFICATION TECHNOLOGY
(2018)
Article
Environmental Sciences
Han Zhang, Yanan Liu, Xi Cheng, Ai Zhang, Xiang Li, Jinxia Liu, Shijie Cai, Cheng Yang, Stephanid Ognier, Pan Li
WATER AIR AND SOIL POLLUTION
(2018)
Article
Engineering, Environmental
Yubing Ye, Shuili Yu, Li'an Hou, Baosen Liu, Qing Xia, Guicai Liu, Pan Li
Article
Polymer Science
Yanyan Lou, Fibor J. Tan, Rong Zeng, Mengen Wang, Pan Li, Shengji Xia
Article
Environmental Sciences
Chao Wu, Xiaoping Wang, Tongren Zhu, Pan Li, Shengji Xia
Letter
Virology
Xiao Hu, Zhen Chen, Zhengyuan Su, Fei Deng, Xinwen Chen, Qi Yang, Pan Li, Quanjiao Chen, Jun Ma, Wuxiang Guan, Rongjuan Pei, Yun Wang
Article
Biochemistry & Molecular Biology
Shengji Xia, Xinran Zhang, Yuanchen Zhao, Fibor J. Tan, Pan Li, Yanling Liu
Summary: The study evaluated the efficiency of a pre-oxidation-coagulation flat ceramic membrane filtration process in water treatment and membrane fouling control. Results showed that NaClO pre-oxidation combined with coagulation/ceramic membrane system was more effective in controlling membrane fouling than O-3 system. The oxidant's influence on the filtration system was related to its oxidizability and other characteristics.
Article
Engineering, Environmental
Xiaoping Wang, Qian Xiao, Chao Wu, Pan Li, Shengji Xia
Summary: TFN NFMs prepared through interfacial polymerization on PVDF substrates exhibit high permeability and rejection rates, while maintaining structural stability, making them promising candidates for practical water desalination treatment.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Shuo Wang, Limin Zhou, Xingya Wang, Jun Hu, Pan Li, Guanhua Lin, Yongxiang Gao, Lijuan Zhang, Chunlei Wang
Summary: This study proposed a mean-field theory for computing the evolution of the size-distribution function of bulk nanobubbles with size-dependent surface tension. The results show that Ostwald ripening can be suppressed with enough surfactants adsorbed, and the stable size of bulk nanobubbles is controlled by the amount of surfactants and the initial microbubble concentration. These predictions are qualitatively consistent with experimental results of micro/nanobubbles produced using the microfluidic method.
Article
Environmental Sciences
Wei Tang, Yunsi Liu, Qiuyan Li, Ling Chen, Qi Li, Pan Li, Shengji Xia
Summary: Intense rainfall and extreme weather events can significantly increase the levels of bacteria and pathogens in water sources and drinking water. The abundance of Cyanobacteria, in particular, increases after such events. The biological activated carbon tank may serve as a potential reservoir for pathogens.
Article
Chemistry, Physical
Ya-nan Zhang, Ning Qin, Jianyun Li, Shengnan Han, Pan Li, Guohua Zhao
APPLIED CATALYSIS B-ENVIRONMENTAL
(2017)
Article
Engineering, Environmental
Zhang Yimeng, Chu Wenhai, Xu Ting, Yin Daqiang, Xu Bin, Li Pan, An Na
CHEMICAL ENGINEERING JOURNAL
(2017)
Meeting Abstract
Chemistry, Multidisciplinary
Pan Li, Yunxiu Yang, Chao Wu, Yue Wang
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2017)