Results 291 to 300 of about 86,606 (314)

Degradation of Drinking Water Disinfection Byproducts by Synthetic Goethite and Magnetite

Environmental Science & Technology, 2005
Corrosion 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, Raymond M, Hozalski, William A, Arnold   +2 more
openaire   +2 more sources

Sonochemical degradation of diclofenac: byproduct assessment, reaction mechanisms and environmental considerations

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, Sifa, Dogan, Sesil, Agopcan, Rana, Kidak, Viktorya, Aviyente, Nilsun H, Ince   +5 more
openaire   +2 more sources

Ozonation degradation of microcystin-LR in aqueous solution: Intermediates, byproducts and pathways

Water Research, 2014
The intermediates and byproducts formed during the ozonation of microcystin-LR (MC-LR, m/z = 995.5) and the probable degradation pathway were investigated at different initial molar ratios of ozone to MC-LR ([O3]0/[MC-LR]0). Seven reaction intermediates with m/z ≥ 795.4 were observed by LC/MS, and four of them (m/z = 815.4, 827.3, 853.3 and 855.3) have
Jing, Chang, Zhong-lin, Chen, Zhe, Wang, Ji-min, Shen, Qian, Chen, Jing, Kang, Lei, Yang, Xiao-wei, Liu, Chang-xin, Nie   +8 more
openaire   +2 more sources

Degradation of Halogenated Disinfection Byproducts in Water Distribution Systems

2008
Water 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, William A. Arnold, Chanlan Chun, Timothy M. LaPara, Jeong-Yub Lee, Carrie R. Pearson, Ping Zhang   +6 more
openaire   +1 more source

Photoelectrocatalytic degradation of organics and formation of disinfection byproducts in reverse osmosis concentrate

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
openaire   +2 more sources

Tylosin degradation during manure composting and the effect of the degradation byproducts on the growth of green algae

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, Takeki Maeda, Misaki Soma, Naoto Yoshida, Yota Sameshima, Makoto Sasamoto, Yumi Higashiyama, Eiko Touno, Ayumi Ito   +8 more
openaire   +2 more sources

Toxicity biomonitoring of degradation byproducts using freeze-dried recombinant bioluminescent bacteria

Analytica Chimica Acta, 2003
Abstract A toxicity biomonitoring system using freeze-dried recombinant bioluminescent bacteria was implemented to diagnose the biotreatment of 2,4,5-trichlorophenol and its degradation byproducts of using a cell-free culture broth of Phanerochaete chrysosporium.
Sue Hyung Choi, Man Bock Gu
openaire   +1 more source

Variation in ruminal degradation and intestinal digestion of animal byproduct proteins

Animal Feed Science and Technology, 1996
Abstract In situ and in vitro procedures were used to determine ruminal degradation and intestinal digestion of crude protein (CP) from animal byproducts. Seven samples of meat and bone meal (MBM), hydrolyzed feather meal (HFM), ring dried blood meal (RBM), and batch dried blood meal (BBM) were obtained from various rendering and meat packing plants.
S.A. Howie, S. Calsamiglia, M.D. Stern
openaire   +1 more source

SrSnO3/g-C3N4 and sunlight: Photocatalytic activity and toxicity of degradation byproducts

Journal of Environmental Chemical Engineering, 2020
Abstract The presence of organic pollutants in the environment, especially in water, is recognized as a continuing threat to environmental stability. Therefore, the development of new materials for the removal of organic pollutants in water are of fundamental importance.
Idio Alves de Sousa Filho, Laura Ruiz Arana, Giscard Doungmo, Cesar Koppe Grisolia, Huayna Terrashke, Ingrid Távora Weber   +5 more
openaire   +1 more source

Dramatically increased disinfection byproducts in swimming pool water caused by commonly used urea degradants

Water Research, 2022
In China, urea degradants are often used in combination with chlorine in swimming pool water to remove urea. Here we report the first study about the impacts of urea degradants on urea degradation, disinfection byproduct (DBP) formation and estimated DBP-associated cytotoxicity and genotoxicity. Firstly, four groups of typical DBPs from six real indoor
Di, Zhang, Li, Chen, Shengkun, Dong, Jiayi, Luo, Zuxin, Xu, Wenhai, Chu   +5 more
openaire   +2 more sources