Review
Engineering, Environmental
Emil Bein, Ines Zucker, Joerg E. Drewes, Uwe Huebner
Summary: Gas-liquid membrane contactors are proposed as an alternative for traditional ozone injection methods in water treatment, but there is limited information on large-scale applications. This review discusses the research state of ozone membrane contactors, focusing on material stability, mass transfer performance, and process design, aiming to identify favorable operating conditions and benefits over traditional methods. The study compares experimental and calculated mass transfer coefficients for different membranes and suggests areas for future research.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Environmental Sciences
Alexander John, Adam Brookes, Irene Carra, Bruce Jefferson, Peter Jarvis
Summary: This review compares the use of microbubbles with conventional bubbles in the ozonation process. Microbubbles have a larger interfacial area and lower rise velocity, allowing for more efficient transfer of ozone into the liquid phase. Microbubbles have shown to oxidize organic compounds more quickly and enhance mass transfer. However, fair and consistent experimental comparisons between microbubbles and conventional bubbles are needed.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Environmental
Tengfei Ren, Changpei Ouyang, Zuoyong Zhou, Shuning Chen, Mengxi Yin, Xia Huang, Xiaoyuan Zhang
Summary: Heterogeneous catalytic ozonation using fibrous catalysts is an efficient method for removing hazardous organic contaminants in wastewater. In this study, Mn-doped carbon-aluminosilicate fibers were developed as a novel catalyst. The fibers showed high catalytic activity, mass transfer properties, and easy separation characteristics. The experimental results demonstrated that the Mn-CAS fibers exhibited superior reactivity compared to traditional catalysts, and the COD removal rate in coal gasification wastewater was over 56%.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Chemical
Pranjal P. Das, Piyal Mondal, Anweshan, A. Sinha, P. Biswas, S. Sarkar, Mihir K. Purkait
Summary: This study demonstrated the combined effect of ozonation and electrocoagulation for treating steel industry wastewater, achieving significant reduction in pollutant levels. Specific operating variables were identified for optimal pollutant removal efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Mahshid Mortazavi, Shikha Garg, T. David Waite
Summary: In this study, we investigated the effects of H2O2 dosage, H2O2 dosing method, and electron-rich dissolved organic matter (DOM) on the peroxone (O3/H2O2) process. We found that the dosing method of H2O2 had a significant impact on the removal of oxalate (OA), with continuous injection of 1 mM H2O2 achieving nearly 100% OA removal after 1 hour. Additionally, the presence of high concentrations of humic acids (HA) enhanced the oxidation rate of OA by ozone alone. Based on our findings, we developed a mathematical model that predicts the generation of center dot OH and OA oxidation in the peroxone process, which can be used to optimize operating conditions.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Environmental
Anthony Heebner, Bassim Abbassi
Summary: This study evaluated a new combined treatment approach by combining ozonation and electrolysis for the mineralization of organic compounds in water. The results showed that the method was most effective for TOC removal in alkaline conditions and significantly enhanced performance compared to ozonation alone in acidic conditions. The initial pH had a more significant effect on TOC removal than current density, but both parameters were relevant. Under optimized conditions, 63% TOC removal was achieved.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Yangbo Huang, Zeyu Guan, Qiang Li, Qian Li, Dongsheng Xia
Summary: Catalytic ceramic membranes integrated with different metal oxides were designed and fabricated. The metal oxides were uniformly anchored around the Al2O3 particles, providing active sites for peroxymonosulfate activation. The CMs showed desirable phenol removal efficiency and good stability, and the activation mechanism of PMS was discussed.
Article
Environmental Sciences
Pranjal P. Das, Anweshan, Piyal Mondal, A. Sinha, P. Biswas, S. Sarkar, M. K. Purkait
Summary: This study focuses on the removal of cyanide, COD, BOD, and chloride from BOT effluent of the steel industry using an integrated ozonation assisted electrocoagulation method. The combined process showed highly satisfactory removal efficiencies, with optimization of operating conditions leading to reductions below permissible limits for the pollutants. Kinetic and mass transfer studies were conducted to analyze the degradation of pollutants during ozonation, with the results showing promising potential for practical applications.
Article
Environmental Sciences
Hai Chen, Jianlong Wang
Summary: The study found that the degradation and mineralization of ofloxacin by ozonation and peroxone process were effective, with peroxone process showing a significantly better mineralization effect compared to ozonation alone. The dosage of H2O2 and O-3 was crucial for process performance, and the presence of HCO3- and PO43- enhanced mineralization while Cl- and NO3- had a negative impact on mineralization efficiency.
Article
Engineering, Chemical
Alexander John, Irene Carra, Bruce Jefferson, Lucie Bertolaso, Adam Brookes, Peter Jarvis
Summary: Microbubble technology shows promise in improving gas-liquid contacting processes, particularly in ozonation. Microbubbles enhance mass transfer, dissolved ozone residual, and compound removal. The improvement is attributed to an increase in specific interfacial area and a decrease in the mass transfer coefficient. No enhancement in hydroxyl radical production, bromate formation, or impact from background constituents was observed.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Environmental Sciences
Oscar M. Cornejo, Mariela Ortiz, Zaira G. Aguilar, Jose L. Nava
Summary: This study investigated the degradation of Acid Violet 19 (AV19) textile dye using the electro-peroxone process in a laboratory flow plant. The combination of H2O2 generation and O3 production led to efficient discoloration and mineralization of the dye, with E-peroxone showing superior oxidation power compared to anodic oxidation plus H2O2 and ozonation. Three carboxylic acids were identified as the oxidation end products.
Article
Materials Science, Multidisciplinary
Kuichang Zuo, Kunpeng Wang, Ryan M. DuChanois, Qiyi Fang, Eva M. Deemer, Xiaochuan Huang, Ruikun Xin, Ibrahim A. Said, Ze He, Yuren Feng, W. Shane Walker, Jun Lou, Menachem Elimelech, Xia Huang, Qilin Li
Summary: Membrane separation technology has shown great potential in water treatment, providing new pathways for highly selective separation of pollutants. The focus of research on high selectivity membrane materials and processes is to improve the selectivity of water, ions, and small molecules, and explore future development directions.
Article
Engineering, Environmental
Linxin Zhong, Chunyi Sun, Fenglin Yang, Yingchao Dong
Summary: The study presents a waste-to-resource strategy for recycling copper-bearing waste and treating oily wastewater by rational design of spinel ceramic membranes. A spinel phase conversion mechanism was proposed, and spinning and sintering parameters were systematically studied to tailor membrane structure and properties. This approach demonstrates the feasibility of recycling hazardous metal-bearing sludges into functional ceramic membranes for water treatment applications.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Review
Engineering, Environmental
Abdul Halim, Lusi Ernawati, Maya Ismayati, Fahimah Martak, Toshiharu Enomae
Summary: This paper reviews the current research trend of using cellulose as a membrane material for purifying oily wastewater. It introduces three typical biostructures: superhydrophobic, underwater superoleophobic, and Janus surfaces, and applies their characteristics to improve membrane performance. The study also focuses on the biodegradability and sustainability of cellulose. The principles, mechanisms, fabrication processes, and membrane performances are summarized and compared, and future outlook is discussed.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2022)
Article
Engineering, Environmental
Bing Wu, Rudraksha D. Majumdar, Daniel H. Lysak, Rajshree Ghosh Biswas, Maryam Tabatabaei-Anaraki, Amy Jenne, Xiang You, Ronald Soong, Daniel Lane, Paul A. Helm, Anna Codina, Venita Decker, Myrna J. Simpson, Andre J. Simpson
Summary: Nuclear Magnetic Resonance (NMR) spectroscopy is a valuable tool for monitoring complex organic compounds in wastewater. This study demonstrates the potential of online NMR for understanding wastewater treatment processes without the need for pre-concentration. The research suggests that a combination of ozone and sunlight is effective in removing organics from wastewater, and highlights the complexity of chemical reactions involved in wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Jonathan E. Barnard, Stuart Scott, Steve Tennison, Martin W. Smith, Michael W. Harral, Andrew D. Burrows, Semali Perera, Y. M. John Chew
Summary: This study introduces a computationally efficient numeric model based on a bi-linear driving force model to investigate the purification of gas streams in commercial fire escape masks. The model optimizes the dimensions and configuration of the filter for improved efficiency and reduced computational time, demonstrating significant accuracy. The success of this work represents a step change in FEM design and air purification devices, highlighting the importance of heat absorption in the process.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Hui Shi, Kazi M. Zakir Hossain, Davide Califano, Ciaran Callaghan, Ekanem E. Ekanem, Janet L. Scott, Davide Mattia, Karen J. Edler
Summary: This study demonstrates the formation of stable microcapsules through electrostatic attractions between oppositely charged nanofibrils. The encapsulation of dye in the microcapsules enables low and controlled release at room temperature.
Article
Engineering, Environmental
Jakob Kaemmler, Garyfalia A. Zoumpouli, Joern Sellmann, Y. M. John Chew, Jannis Wenk, Mathias Ernst
Summary: Membrane ozonation using polydimethylsiloxane (PDMS) and polytetrafluoroethylene (PTFE) membrane contactors was used to treat bromide-containing, high-color natural organic matter (NOM) in groundwater. The study investigated the correlation between dissolved ozone concentration, water color, ultraviolet light absorption, bromate formation and various process parameters. The results showed that ozone dose played a major role in balancing bromate formation and NOM color removal, and could be controlled by adjusting gas concentration, hydraulic retention time, and Hatta number (Ha).
Article
Biotechnology & Applied Microbiology
Triantafyllos K. Manios, Davide Mattia, Michael R. Bird
Summary: This paper presents the development and evaluation of reducing caffeine content in coffee beverages using a synthetic tight ultrafiltration polyethersulphone (PES) membrane, demonstrating its commercial viability, as well as the effectiveness of membrane cleaning and reuse.
FOOD AND BIOPRODUCTS PROCESSING
(2022)
Article
Chemistry, Analytical
Alysson Stefan Martins, Thais Tasso Guaraldo, Jannis Wenk, Davide Mattia, Maria Valnice Boldrin Zanoni
Summary: The integration of photocatalysis and electrochemical degradation in a continuous flow reactor with a WO3/W mesh as photo-electrode led to a 90% removal of tetracycline in 60 minutes, almost 3 times higher than photocatalysis alone. This scalable approach offers valuable insights for practical issues in water treatment such as costs and efficiency.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Frank Marken, Junjie Shen, Tianting Pang, Dengsong Zhang, Davide Mattia
Summary: This study establishes an electrochemical impedance-based method to detect and investigate the electrochemical properties of activated carbon fibres (ACFs) without destroying their original weaving patterns. The weaving pattern plays a role in the electrochemical properties and desalination performance of ACFs, with knitted ACFs consuming less energy for removing the same amount of NaCl compared to woven ACFs.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Thais T. Guaraldo, Reza Vakili, Jannis Wenk, Davide Mattia
Summary: This study developed highly efficient self-supporting photocatalytic ZnO foams for the degradation of organic micropollutants. It achieved superior degradation performance compared to current technology under both recirculation and single-pass conditions, with low energy consumption and high quantum yield. These foams offer a practical approach for implementing photocatalytic processes in water treatment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Zachary Warren, Jannis Wenk, Davide Mattia
Summary: In this study, highly porous and mechanically stable ZnO foams, called MolFoams, were prepared by doping with Co, Ni, or Cu salts. The doped foams showed improved stability and reduced leaching of Zn2+ after irradiation, but with a decrease in photocatalytic activity. Doping introduced Co3O4, NiO, and Cu2O into the ZnO lattice, resulting in a reduced band gap and increased resistance to photocorrosion.
Article
Chemistry, Multidisciplinary
Stuart Scott, John Chew, Jonathan Barnard, Andrew Burrows, Martin Smith, Steven Tennison, Semali Perera
Summary: This study presents the manufacture of tailored carbon-based adsorbent structures with low-pressure drops and improved kinetics using stereolithographic 3D printing. The activated 3D printed carbon achieves high surface areas and exceptional adsorption capacities. These structures demonstrate excellent adsorption kinetics and offer potential applications in gas separation technologies.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Franciszek Bydalek, Gordon Webster, Ruth Barden, Andrew J. Weightman, Barbara Kasprzyk-Hordern, Jannis Wenk
Summary: This study investigated the establishment and changes in microplastic-associated biofilms and antimicrobial resistance (AMR) during a conventional wastewater treatment process. The results showed that the microbial diversity on microplastics increased with incubation time. Although the treatment process reduced pathogen and AMR load, microplastic-associated biofilms still harbored AMR genes and potential pathogens.
Article
Biotechnology & Applied Microbiology
Triantafyllos K. Manios, Davide Mattia, Michael R. Bird
Summary: Filtration processes have been widely used in the food processing industry as a viable alternative to solvents in the decaffeination process. This paper presents the development and evaluation of fouling in multiple filtration cycles during caffeine reduction from coffee brews using synthetic and self-made membranes. The self-made mixed matrix PES membrane (PSCD) exhibited a higher permeate flux compared to the commercially available synthetic tight ultrafiltration membrane (GP95PP).
FOOD AND BIOPRODUCTS PROCESSING
(2023)
Article
Environmental Sciences
Garyfalia A. Zoumpouli, Dean Herron, Arthur Thornton, Bruce Jefferson, Pablo Campo
Summary: Coagulant dosing can help remove trace organics, such as pharmaceuticals, plasticisers, and flame retardants, in wastewater effluents along with achieving low phosphorus concentrations. However, the behavior of trace organics in coagulation processes is not well understood due to complex interactions between these compounds, coagulants, and dissolved organic matter (DOM). This study evaluated the coagulation removal of twenty-four compounds, including PFAS and brominated flame retardants, using two coagulants (alum, ferric chloride) and five DOM surrogates with different characteristics. The addition of humic acid as a complexing agent can enhance the removal of hydrophobic trace substances, including certain long-chain PFAS and brominated flame retardants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Mingyi Jia, Muhammad Usman Farid, Jehad A. Kharraz, Nallapaneni Manoj Kumar, Shauhrat S. Chopra, Am Jang, John Chew, Samir Kumar Khanal, Guanghao Chen, Alicia Kyoungjin
Summary: Since their discovery in 1994, nanobubbles have attracted increasing attention and have been studied for their properties in various environmental fields. However, disagreements in the literature have hindered their practical implementation. This review aims to provide a comprehensive analysis of recent progress in nanobubble research for water and wastewater treatment, including challenges and prospects.
Review
Engineering, Environmental
Zachary Warren, Thais Tasso Guaraldo, Alysson Stefan Martins, Jannis Wenk, Davide Mattia
Summary: Photocatalytic foams have the potential to address drawbacks hindering large-scale application of photocatalysis. This review provides a comprehensive overview of the state-of-the-art while addressing key issues such as the lack of classification nomenclature for foams and the use of kinetics as the defining feature of a photocatalyst. Standardization of experimental methods within the field is highlighted as necessary.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
