Results 231 to 240 of about 1,084,483 (265)
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Degradation of Disinfection Byproducts by Carbonate Green Rust
Environmental Science & Technology, 2007Disinfection byproducts (DBPs) in drinking water flowing through corroded iron or steel pipes may encounter carbonate green rust (GR(CO32-)), a mixed Fe(II)/Fe(lll) hydroxide mineral and potent reductant. This research was performed to investigate the kinetics and pathways of the degradation of selected halogenated DBPs in the presence of GR(C032 ...
Chan Lan, Chun +2 more
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PPCP degradation by ammonia/chlorine: Efficiency, radical species, and byproducts formation
Water Research, 2023Pharmaceutical and personal care products (PPCPs) are frequently detected in water bodies and have potential risks to human health and the ecosystem. The degradation of eight structurally diverse PPCPs by ammonia/chlorine was systematically investigated in this study.
Bei Ye +3 more
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Science of The Total Environment, 2020
In this study, we investigate the tylosin degradation in sheep feces during composting. The sheep feces containing tylosin were composted using the laboratory-scale composting units. Tylosin was degraded during composting, and the half-life of tylosin degradation decreased with increasing temperature from 40 °C to 65 °C.
Nao Kamei-Ishikawa +8 more
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In this study, we investigate the tylosin degradation in sheep feces during composting. The sheep feces containing tylosin were composted using the laboratory-scale composting units. Tylosin was degraded during composting, and the half-life of tylosin degradation decreased with increasing temperature from 40 °C to 65 °C.
Nao Kamei-Ishikawa +8 more
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Chemosphere, 2021
Cyclophosphamide (CP) is a widely used anticancer drug and an immunosuppressant. Since CP is nonbiodegradable, it is hardly removed by the conventional wastewater treatment processes, resulting in continuous detection in surface water. In this study, the degradation of CP during the UV-B/chlorine reaction was investigated.
Ji-Young Lee +4 more
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Cyclophosphamide (CP) is a widely used anticancer drug and an immunosuppressant. Since CP is nonbiodegradable, it is hardly removed by the conventional wastewater treatment processes, resulting in continuous detection in surface water. In this study, the degradation of CP during the UV-B/chlorine reaction was investigated.
Ji-Young Lee +4 more
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Degradation of Drinking Water Disinfection Byproducts by Synthetic Goethite and Magnetite
Environmental Science & Technology, 2005Corrosion of iron pipes leads to the release of ferrous iron, Fe(II), and the formation of iron oxides, such as goethite and magnetite, on the pipe surface. Fe(II), a potent reductant when associated with iron oxide surfaces, can mediate the reduction of halogenated organic compounds.
Chan Lan, Chun +2 more
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Water Research, 2020
The high content of organics in municipal reverse osmosis concentrate (ROC) requires proper treatment. Here, this study applied the photoelectrocatalysis (PEC) to reduce the concentration of organics in ROC. Meanwhile, the formation of disinfection byproducts (DBPs) was investigated.
Yiwei, Chen, Si, Li, Jiangyong, Hu
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The high content of organics in municipal reverse osmosis concentrate (ROC) requires proper treatment. Here, this study applied the photoelectrocatalysis (PEC) to reduce the concentration of organics in ROC. Meanwhile, the formation of disinfection byproducts (DBPs) was investigated.
Yiwei, Chen, Si, Li, Jiangyong, Hu
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Kinetics and Mechanism of the Sonolytic Degradation of CCl4: Intermediates and Byproducts
Environmental Science & Technology, 1996The sonolytic degradation of aqueous carbon tetrachloride is investigated at a sound frequency of 20 kHz and 135 W (112.5 W cm^(-2)) of power. The observed first-order degradation rate constant in an Ar-saturated solution is 3.3 × 10^(-3) s^(-1) when the initial CCl_4 concentration, [CCl_4]_i, is 1.95 × 10^(-4) mol L^(-1) and increases slightly to 3.9 ×
Hua, Inez, Hoffmann, Michael R.
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Electricity production from lignin photocatalytic degradation byproducts
Energy, 2016Abstract Byproducts from a photocatalytic pretreated model lignin chemical, sodium LS (lignosulfonate), was used to produce electricity in SCMFCs (single chamber microbial fuel cells). Pretreating LS was performed using TiO 2 -UV photocatalysis. Optimization and modeling of the photocatalytic degradation process was performed using the Box-Behnken ...
Wudneh Ayele Shewa +3 more
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Environmental Science and Pollution Research, 2014
The study covers a thorough assessment of the overall degradation of diclofenac-Na (DCF) by high-frequency ultrasound, focusing particularly on identification, interpretation, and characterization of the oxidation byproducts and their reaction mechanisms.
Asu, Ziylan +5 more
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The study covers a thorough assessment of the overall degradation of diclofenac-Na (DCF) by high-frequency ultrasound, focusing particularly on identification, interpretation, and characterization of the oxidation byproducts and their reaction mechanisms.
Asu, Ziylan +5 more
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Degradation of Halogenated Disinfection Byproducts in Water Distribution Systems
2008Water distribution systems are complex environments frequently containing corroded iron pipes and biofilms. To thoroughly understand the fate of halogenated disinfection byproducts (DBPs) in these systems, two degradation processes were investigated: abiotic degradation (i.e. hydrolysis and reductive dehalogenation) and biodegradation.
Raymond M. Hozalski +6 more
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