Article
Biotechnology & Applied Microbiology
Conghui Huang, Gemma G. Clark, Farzana R. Zaki, Jungeun Won, Runsen Ning, Stephen A. Boppart, Ahmed E. Elbanna, Thanh H. Nguyen
Summary: This study investigated the roles of phosphate and silicate in the properties of biofilms. Phosphate and phosphate-blend additives resulted in lower stiffness, greater viscoelasticity, and more porous structure compared to non-nutrient additives. Phosphate-based additives also increased the presence of organic species in the biofilm matrix.
Article
Engineering, Environmental
Marta Zemite, Daina Pule, Olga Kirilina-Gutmane, Laima Kimse, Martins Strods, Jurgis Zemitis, Linda Mezule, Olga Valcina, Talis Juhna
Summary: This study investigated the impact of phosphorus on the growth of Legionella bacteria. The findings suggest that reducing phosphorus levels alone is insufficient for effective control of Legionella and additional strategies are needed.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Cheng Tan, Haizhou Liu
Summary: In this study, inhibitive corrosion control strategies for Cr(VI) formation through the oxidation of Cr(0) by chlorine were investigated by adjusting chemical water parameters. The results revealed that increasing pH, silicate, alkalinity, and calcium suppressed Cr(VI) formation due to the precipitation of Cr(III) solids on the surface of Cr(0). These Cr(III) precipitates were less reactive with chlorine and inhibited Cr redox reactivity. The concentration of surface Cr(III) solids was inversely correlated with the rate constant of Cr(VI) formation, and the addition of phosphate showed varying effects on Cr(VI) formation depending on its concentration.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Isaiah Spencer-Williams, Mitchell Meyer, William Depas, Emily Elliott, Sarah-Jane Haig
Summary: Increases in phosphate availability from phosphate-based corrosion control strategies may result in shifts in nutrient and microbial community composition in drinking water distribution systems. This study found that orthophosphate addition led to significant changes in microbial community composition and increased bacterial density, particularly for nontuberculous mycobacteria. The study also revealed potential species-specific interactions between phosphate and bacteria.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Environmental Sciences
Qingwei Zhou, Zhengfu Bian, Dejun Yang, Li Fu
Summary: The importance of the stability of drinking water distribution systems and the management of disinfection by-products in ensuring public health safety is discussed in this paper. The interrelationships between corrosion products, microbes, and drinking water quality are explained, along with the mechanisms through which corrosive by-products influence disinfectant decay and harmful by-product formation. Recommendations for removing DBPs are also presented.
Review
Engineering, Environmental
Bofu Li, Benjamin F. Trueman, Evelyne Dore, Graham A. Gagnon
Summary: Research shows that silicate treatment generally results in higher lead release and is less effective than orthophosphate treatment. The positive effect of sodium silicate on pH appears to be the main driver of controlling lead release.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2021)
Article
Veterinary Sciences
Abraham Loera-Muro, Flor Y. Ramirez-Castillo, Adriana C. Moreno-Flores, Eduardo M. Martin, Francisco J. Avelar-Gonzalez, Alma L. Guerrero-Barrera
Summary: The study revealed that A. pleuropneumoniae can survive in biofilms in drinking water samples from pig farms in Mexico, indicating its potential presence in the environment.
FRONTIERS IN VETERINARY SCIENCE
(2021)
Article
Environmental Sciences
Shima Ghoochani, Md Hadiuzzaman, Nahreen Mirza, Shawn P. Brown, Maryam Salehi
Summary: This study examined the influence of water pH and flow conditions on lead release from new and biofilm-laden potable water pipes. The results showed that water flow conditions did not significantly affect lead uptake, possibly due to biofilm detachment. Under water flow conditions, new plastic pipes had higher lead release, and water pH influenced lead release.
ENVIRONMENTAL POLLUTION
(2023)
Review
Food Science & Technology
Alcileia C. Miranda, Graziela F. Leaes, Marina Copetti
Summary: Fungi, both molds and yeasts, play a significant role in the food industry but also present a risk of food deterioration. These microorganisms can form biofilms with resistance, making their inactivation challenging. Further research is needed to determine the impact of fungal biofilm formation on the food industry.
CURRENT OPINION IN FOOD SCIENCE
(2022)
Review
Environmental Sciences
Ana Rita Pereira, Manuel Simoes, Ines B. Gomes
Summary: Among emerging pollutants, parabens have gained attention due to their widespread presence in water sources globally. They are commonly used in personal care products, pharmaceuticals, and food, resulting in residues that are released into aquatic environments. The varying regulations on paraben use across different regions have led to diverse concentrations being observed worldwide. Although paraben concentrations in drinking water are typically low, their presence raises concerns for human health and environmental microbiota. The effects of paraben exposure on microbial communities, particularly biofilm colonizers, remain understudied.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Microbiology
Frances C. Pick, Katherine E. Fish, Stewart Husband, Joby B. Boxall
Summary: Biofilms are common in drinking water distribution systems and can pose risks to water quality. A novel biofilm monitoring device has been developed to assess biofouling rates, offering valuable data for improving management of drinking water systems.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Food Science & Technology
Rodrigo Jimenez-Pichardo, Iriana Hernandez-Martinez, Carlos Regalado-Gonzalez, Jose Santos-Cruz, Yunny Meas-Vong, Maria del Carmen Wacher-Rodarte, Julian Carrillo-Reyes, Irais Sanchez-Ortega, Blanca Estela Garcia-Almendarez
Summary: This study investigated the biofilm formation on stainless steel plates used in the dairy industry and proposed a sustainable cleaning and disinfection process to prevent biofilm formation. By analyzing the role of different microbial groups and genetic complexity, an effective approach to controlling biofilms was identified.
Article
Engineering, Environmental
Frances C. Pick, Katherine E. Fish, Joby B. Boxall
Summary: The study introduces a new conceptual model to understand the impact of assimilable organic carbon (AOC) on drinking water biofilms and water quality. Experiment results show that biofilms formed under high AOC conditions exhibit significant discoloration and turbidity responses, potentially causing regulatory failures and water quality issues.
Article
Environmental Sciences
Vitoria Arruda, Manuel Simoes, Ines B. Gomes
Summary: The presence and impact of emerging contaminants, particularly synthetic musks, on microbial communities in aquatic systems have drawn attention from the scientific community. This review article examines the presence of musk fragrances in drinking water and their effects on aquatic microbial populations, emphasizing the need for further research in this area to better understand the implications for public health.
Review
Polymer Science
Yuan Liu, Ping Zhang
Summary: Production chemistry is crucial in the petroleum industry as it investigates physicochemical changes and their impact on fluid flow in the production system. Mineral scale deposition and metal corrosion are major water-related threats in the industry. Chemical inhibitors, such as phosphorus-based polymers, are commonly used for control. This review article provides a comprehensive overview of the synthesis, testing, and field applications of phosphorus-based polymeric inhibitors while outlining future research directions.
Article
Engineering, Environmental
Mahsa Foolad, Jiangyong Hu, Ngoc Han Tran, Say Leong Ong
WATER SCIENCE AND TECHNOLOGY
(2016)
Article
Engineering, Environmental
Olivier Lefebvre, Jiangyong Hu, Say Leong Ong, How Yong Ng
JOURNAL OF WATER REUSE AND DESALINATION
(2016)
Article
Agricultural Engineering
Kok Kwang Ng, Xueqing Shi, Say Leong Ong, How Yong Ng
BIORESOURCE TECHNOLOGY
(2016)
Article
Engineering, Environmental
Siok Ling Low, Say Leong Ong, How Yong Ng
CHEMICAL ENGINEERING JOURNAL
(2016)
Review
Environmental Sciences
Fang Yee Lim, Say Leong Ong, Jiangyong Hu
Review
Engineering, Chemical
Galilee Uy Semblante, Jonathan Zhiqiang Lee, Lai Yoke Lee, Say Leong Ong, How Yong Ng
Editorial Material
Engineering, Civil
Sin Zhi Goh, Huiling Guo, Fang Yee Lim, Lai Yoke Lee, Jiangyong Hu, Say Leong Ong
JOURNAL OF HYDROLOGY
(2018)
Article
Engineering, Chemical
Dandan Zhao, Lai Yoke Lee, Say Leong Ong, Prannoy Chowdhury, Keng Boon Siah, How Yong Ng
SEPARATION AND PURIFICATION TECHNOLOGY
(2019)
Article
Engineering, Chemical
Weilong Song, Lai Yoke Lee, Enyu Liu, Xueqing Shi, Say Leong Ong, How Yong Ng
JOURNAL OF MEMBRANE SCIENCE
(2020)
Article
Engineering, Environmental
Q. Q. Cai, B. C. Y. Lee, S. L. Ong, J. Y. Hu
Summary: The fluidized-bed Fenton (FBR-Fenton) process has gained attention for treating industrial wastewater, combining the effectiveness of Fenton synthesis and sludge reduction. Challenges include high consumption of Fenton reagents and strict pH control, but strategies for overcoming these limitations are being discussed for improving cost-effectiveness. Modeling techniques like computational fluid dynamics and artificial neural networks show promise for accelerating the full-scale application of FBR-Fenton technologies.
Article
Engineering, Environmental
M. Y. Wu, Q. Q. Cai, H. P. Xu, S. L. Ong, J. Y. Hu
Summary: An integrated computational fluid dynamics-kinetic model framework accurately describes the hydrodynamic and kinetic phenomena in a liquid-solid two phases Fluidized-bed reactor Fenton/GAC system. The simulation revealed that the GAC particles were uniformly circulated with clear interface layer between solid and liquid phases. The combined effects of (OH)-O-center dot oxidation and GAC adsorption in the fluidized bed region led to faster COD removal, reducing the overall predicted COD concentration by 59% from 122 to 35 mg/L.
Article
Environmental Sciences
Fang Yee Lim, Teck Heng Neo, Huiling Guo, Sin Zhi Goh, Say Leong Ong, Jiangyong Hu, Brandon Chuan Yee Lee, Geok Suat Ong, Cui Xian Liou
Summary: The study investigated the feasibility of using modular bioretention trees (MBT) to treat stormwater runoff in a highly urbanized tropical environment, and found that MBTs could effectively remove various pollutants, with removal efficiencies of total suspended solids and phosphorus exceeding 90%. Additionally, environmental factors and different tree species were found to have an impact on the performance of MBT.
Article
Environmental Sciences
Qian Li, Haifeng Jia, Hongkai Guo, Yunyun Zhao, Guohua Zhou, Fang Yee Lim, Huiling Guo, Teck Heng Neo, Say Leong Ong, Jiangyong Hu
Summary: The performance of a modified bioretention facility in removing road runoff pollutants and the variations in physicochemical properties and microbial diversity were evaluated in this study. The results showed that the modified bioretention facility had lower effluent concentrations and better removal efficiencies, as well as a richer microbial community.
Article
Environmental Sciences
Harsha S. Fowdar, Teck Heng Neo, Say Leong Ong, Jiangyong Hu, David T. McCarthy
Summary: Nature-based solutions or Green infrastructure (GI) are increasingly popular for managing stormwater pollution globally. The MUSIC model, an important tool for planning these systems, was evaluated for its performance in a tropical climate. The model was able to reasonably simulate outflows and pollutant concentrations, but had some limitations in simulating hydrographs and pollutographs under different inflow and drying/wetting conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
J. W. Goh, Y. Xiong, W. Wu, Z. Huang, S. L. Ong, J. Y. Hu
Summary: In this study, a MIL-101(Cr)@TiO2 composite was synthesized to overcome the drawbacks of TiO2 and achieve efficient degradation of CBZ. The composite exhibited delayed recombination of photo-generated h(+) and e(-), reduced band gap energy, and showed excellent degradation performance under UV-A irradiation.