The Experts below are selected from a list of 14859 Experts worldwide ranked by ideXlab platform
Onita D. Basu - One of the best experts on this subject based on the ideXlab platform.
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Analyzing the performance of biological versus Conventional drinking water Filtration under warm and cold water conditions: A pilot scale study
Chemosphere, 2019Co-Authors: Ashley Piche, Andy Campbell, Ian Douglas, Onita D. BasuAbstract:Abstract Conventional Filtration practices typically operate with a pre-chlorination step for the disinfection of harmful pathogens. Without pre-chlorination, biofilters will develop, which are capable of reducing the formation of disinfection by-products (DBPs) and can decrease bacterial regrowth in the distribution system. However, concerns, particularly in North America, still exist with the implementation of bioFiltration and there is a lack of side-by-side comparisons with pre-chlorinated filters in literature. A pilot scale study comparing Conventional and biological dual media anthracite/sand filters was conducted to assess their performance under warm (15–25 °C) and cold (0–5 °C) water conditions. The filters were operated under various backwash conditions, including the addition of air scour and extended terminal subfluidization wash (ETSW). The biofilter effluent exhibited significantly lower (p
Ashley Piche - One of the best experts on this subject based on the ideXlab platform.
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Analyzing the performance of biological versus Conventional drinking water Filtration under warm and cold water conditions: A pilot scale study
Chemosphere, 2019Co-Authors: Ashley Piche, Andy Campbell, Ian Douglas, Onita D. BasuAbstract:Abstract Conventional Filtration practices typically operate with a pre-chlorination step for the disinfection of harmful pathogens. Without pre-chlorination, biofilters will develop, which are capable of reducing the formation of disinfection by-products (DBPs) and can decrease bacterial regrowth in the distribution system. However, concerns, particularly in North America, still exist with the implementation of bioFiltration and there is a lack of side-by-side comparisons with pre-chlorinated filters in literature. A pilot scale study comparing Conventional and biological dual media anthracite/sand filters was conducted to assess their performance under warm (15–25 °C) and cold (0–5 °C) water conditions. The filters were operated under various backwash conditions, including the addition of air scour and extended terminal subfluidization wash (ETSW). The biofilter effluent exhibited significantly lower (p
Lopez M Granados - One of the best experts on this subject based on the ideXlab platform.
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poly styrene sulphonic acid an acid catalyst from polystyrene waste for reactions of interest in biomass valorization
Catalysis Today, 2014Co-Authors: N Alonsofagundez, V Laserna, Ana C Albarubio, Marian Mengibar, Angeles Heras, R Mariscal, Lopez M GranadosAbstract:Abstract This article reports on the use of poly-(styrene sulphonic acid) (PSSA) prepared by sulphonation of polystryrene waste as catalyst in reactions demanding acid sites. Two different waste derived catalysts (waste to catalyst, WTC) were studied: soluble PSSA (WTC-PSSA) and solid SiO2-PSSA nanocomposite (WTC-SiO2-PSSA). The catalytic properties of these waste derived acid catalysts have been explored in three different reactions of interest in biomass valorization: biodiesel synthesis, xylose dehydration to furfural and furfural oxidation to maleic and succinic acids. The results show that both soluble and nanocomposite WTC catalysts present promising catalytic properties. The WTC-PSSA requires ultraFiltration for reutilization whereas the WTC-SiO2-PSSA can be separated from the reaction mixtures by more usual techniques (centrifugation or Conventional Filtration). Further research is required for improving the hydrothermal stability of WTC-SiO2-PSSA in order to substantially reduce the leaching of polymer that takes place during the catalytic runs.
Jeffrey Raynal - One of the best experts on this subject based on the ideXlab platform.
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cross flow microFiltration applied to oenology a review
Journal of Membrane Science, 2011Co-Authors: Jeffrey Raynal, El Y Rayess, Claire Albasi, Patricia Taillandier, Patrice BacchinAbstract:The cross-flow microFiltration applied to wine Filtration has become a legitimate alternative to Conventional Filtration processes. However, membrane fouling which affects the operating costs and the plant maintenance, limits the widespread application of this technique. The aim of this review is to provide a better understanding of the development of the cross-flow microFiltration in wine industry, as well as the complexity of wine composition and its consequences on membrane fouling. This review covers also the impact of the operating conditions and the membrane characteristics on fouling mechanisms. Strategies to limit fouling as well as the latest innovations and commercial proposal are discussed in this paper.
Robert C Andrews - One of the best experts on this subject based on the ideXlab platform.
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Conventional drinking water treatment and direct bioFiltration for the removal of pharmaceuticals and artificial sweeteners a pilot scale approach
Science of The Total Environment, 2016Co-Authors: Michael J Mckie, Susan A Andrews, Robert C AndrewsAbstract:The presence of endocrine disrupting compounds (EDCs), pharmaceutically active compounds (PhACs) and artificial sweeteners are of concern to water providers because they may be incompletely removed by wastewater treatment processes and they pose an unknown risk to consumers due to long-term consumption of low concentrations of these compounds. This study utilized pilot-scale Conventional and biological drinking water treatment processes to assess the removal of nine PhACs and EDCs, and two artificial sweeteners. Conventional treatment (coagulation, flocculation, settling, non-biological dual-media Filtration) was compared to biofilters with or without the addition of in-line coagulant (0.2-0.8 mg Al(3+)/L; alum or PACl). A combination of bioFiltration, with or without in-line alum, and Conventional Filtration was able to reduce 7 of the 9 PhACs and EDCs by more than 50% from river water while artificial sweeteners were inconsistently removed by Conventional treatment or bioFiltration. Increasing doses of PACl from 0 to 0.8 mg/L resulted in average removals of PhACs, EDCs increasing from 39 to 70% and artificial sweeteners removal increasing from ~15% to ~35% in lake water. These results suggest that a combination of biological, chemical and physical treatment can be applied to effectively reduce the concentration of EDCs, PhACs, and artificial sweeteners.