The Experts below are selected from a list of 213 Experts worldwide ranked by ideXlab platform
Xinying Zhang - One of the best experts on this subject based on the ideXlab platform.
-
fabrication of bi1 81mnnbo6 72 sulfite system for efficient degradation of Chlortetracycline
Chemosphere, 2021Co-Authors: Jie Zhao, Qiang Song, Dionysios D. Dionysiou, Yawei Feng, Xinying ZhangAbstract:The design of eco-friendly Bi1.81MnNbO6.72/sulfite system for efficient degradation of Chlortetracycline was achieved. The feasibility of synthesizing Bi1.81MnNbO6.72 by hydrothermal method was determined by X-ray diffraction. The magnetic test suggested that Bi1.81MnNbO6.72 possessed paramagnetic properties, indicating unpaired electrons were present. Scanning electron microscope and transmission electron microscopy images revealed that Bi1.81MnNbO6.72 octahedra exhibited exposed [1,1,1] crystal plane containing high density of Bi, Mn and Nb metal atoms. Large numbers of metal atoms will facilitate heterogeneous catalytic process. In a batch system with aeration, Bi1.81MnNbO6.72 could be used as sulfite activator for the disposal of Chlortetracycline. The reaction kinetics of the degradation process conformed to the pseudo-second-order kinetic model. In Bi1.81MnNbO6.72/sulfite process, initial pH, Bi1.81MnNbO6.72 dosage, sulfite and Chlortetracycline concentrations, as well as inorganic salt ions had great effect on Chlortetracycline degradation. Under optimal conditions, the efficiency of Bi1.81MnNbO6.72/sulfite system for degradation of Chlortetracycline could reach 76.2%. Moreover, Mn (II) plays a key role in the initiation of the catalytic reaction in Bi1.81MnNbO6.72/sulfite process. Generated SO3●‒ could act as main reactive species in Bi1.81MnNbO6.72/sulfite process, while HO● was also involved. Three new degradation products were detected by UHPLC/MS/MS and the possible degradation pathways in this system were proposed. Based on this, we believe that Bi1.81MnNbO6.72/sulfite is a type of process for degradation of organic contaminants with research significance and application prospects.
-
Fabrication of Bi1.81MnNbO6.72/sulfite system for efficient degradation of Chlortetracycline.
Chemosphere, 2020Co-Authors: Jie Zhao, Qiang Song, Dionysios D. Dionysiou, Yawei Feng, Xinying ZhangAbstract:The design of eco-friendly Bi1.81MnNbO6.72/sulfite system for efficient degradation of Chlortetracycline was achieved. The feasibility of synthesizing Bi1.81MnNbO6.72 by hydrothermal method was determined by X-ray diffraction. The magnetic test suggested that Bi1.81MnNbO6.72 possessed paramagnetic properties, indicating unpaired electrons were present. Scanning electron microscope and transmission electron microscopy images revealed that Bi1.81MnNbO6.72 octahedra exhibited exposed [1,1,1] crystal plane containing high density of Bi, Mn and Nb metal atoms. Large numbers of metal atoms will facilitate heterogeneous catalytic process. In a batch system with aeration, Bi1.81MnNbO6.72 could be used as sulfite activator for the disposal of Chlortetracycline. The reaction kinetics of the degradation process conformed to the pseudo-second-order kinetic model. In Bi1.81MnNbO6.72/sulfite process, initial pH, Bi1.81MnNbO6.72 dosage, sulfite and Chlortetracycline concentrations, as well as inorganic salt ions had great effect on Chlortetracycline degradation. Under optimal conditions, the efficiency of Bi1.81MnNbO6.72/sulfite system for degradation of Chlortetracycline could reach 76.2%. Moreover, Mn (II) plays a key role in the initiation of the catalytic reaction in Bi1.81MnNbO6.72/sulfite process. Generated SO3●‒ could act as main reactive species in Bi1.81MnNbO6.72/sulfite process, while HO● was also involved. Three new degradation products were detected by UHPLC/MS/MS and the possible degradation pathways in this system were proposed. Based on this, we believe that Bi1.81MnNbO6.72/sulfite is a type of process for degradation of organic contaminants with research significance and application prospects.
Jie Zhao - One of the best experts on this subject based on the ideXlab platform.
-
fabrication of bi1 81mnnbo6 72 sulfite system for efficient degradation of Chlortetracycline
Chemosphere, 2021Co-Authors: Jie Zhao, Qiang Song, Dionysios D. Dionysiou, Yawei Feng, Xinying ZhangAbstract:The design of eco-friendly Bi1.81MnNbO6.72/sulfite system for efficient degradation of Chlortetracycline was achieved. The feasibility of synthesizing Bi1.81MnNbO6.72 by hydrothermal method was determined by X-ray diffraction. The magnetic test suggested that Bi1.81MnNbO6.72 possessed paramagnetic properties, indicating unpaired electrons were present. Scanning electron microscope and transmission electron microscopy images revealed that Bi1.81MnNbO6.72 octahedra exhibited exposed [1,1,1] crystal plane containing high density of Bi, Mn and Nb metal atoms. Large numbers of metal atoms will facilitate heterogeneous catalytic process. In a batch system with aeration, Bi1.81MnNbO6.72 could be used as sulfite activator for the disposal of Chlortetracycline. The reaction kinetics of the degradation process conformed to the pseudo-second-order kinetic model. In Bi1.81MnNbO6.72/sulfite process, initial pH, Bi1.81MnNbO6.72 dosage, sulfite and Chlortetracycline concentrations, as well as inorganic salt ions had great effect on Chlortetracycline degradation. Under optimal conditions, the efficiency of Bi1.81MnNbO6.72/sulfite system for degradation of Chlortetracycline could reach 76.2%. Moreover, Mn (II) plays a key role in the initiation of the catalytic reaction in Bi1.81MnNbO6.72/sulfite process. Generated SO3●‒ could act as main reactive species in Bi1.81MnNbO6.72/sulfite process, while HO● was also involved. Three new degradation products were detected by UHPLC/MS/MS and the possible degradation pathways in this system were proposed. Based on this, we believe that Bi1.81MnNbO6.72/sulfite is a type of process for degradation of organic contaminants with research significance and application prospects.
-
Fabrication of Bi1.81MnNbO6.72/sulfite system for efficient degradation of Chlortetracycline.
Chemosphere, 2020Co-Authors: Jie Zhao, Qiang Song, Dionysios D. Dionysiou, Yawei Feng, Xinying ZhangAbstract:The design of eco-friendly Bi1.81MnNbO6.72/sulfite system for efficient degradation of Chlortetracycline was achieved. The feasibility of synthesizing Bi1.81MnNbO6.72 by hydrothermal method was determined by X-ray diffraction. The magnetic test suggested that Bi1.81MnNbO6.72 possessed paramagnetic properties, indicating unpaired electrons were present. Scanning electron microscope and transmission electron microscopy images revealed that Bi1.81MnNbO6.72 octahedra exhibited exposed [1,1,1] crystal plane containing high density of Bi, Mn and Nb metal atoms. Large numbers of metal atoms will facilitate heterogeneous catalytic process. In a batch system with aeration, Bi1.81MnNbO6.72 could be used as sulfite activator for the disposal of Chlortetracycline. The reaction kinetics of the degradation process conformed to the pseudo-second-order kinetic model. In Bi1.81MnNbO6.72/sulfite process, initial pH, Bi1.81MnNbO6.72 dosage, sulfite and Chlortetracycline concentrations, as well as inorganic salt ions had great effect on Chlortetracycline degradation. Under optimal conditions, the efficiency of Bi1.81MnNbO6.72/sulfite system for degradation of Chlortetracycline could reach 76.2%. Moreover, Mn (II) plays a key role in the initiation of the catalytic reaction in Bi1.81MnNbO6.72/sulfite process. Generated SO3●‒ could act as main reactive species in Bi1.81MnNbO6.72/sulfite process, while HO● was also involved. Three new degradation products were detected by UHPLC/MS/MS and the possible degradation pathways in this system were proposed. Based on this, we believe that Bi1.81MnNbO6.72/sulfite is a type of process for degradation of organic contaminants with research significance and application prospects.
T A Mcallister - One of the best experts on this subject based on the ideXlab platform.
-
runoff losses of excreted Chlortetracycline sulfamethazine and tylosin from surface applied and soil incorporated beef cattle feedlot manure
Journal of Environmental Quality, 2014Co-Authors: Inoka Amarakoon, Francis Zvomuya, Allan J Cessna, Dani Degenhardt, Francis J Larney, T A McallisterAbstract:Veterinary antimicrobials in land-applied manure can move to surface waters via rain or snowmelt runoff, thus increasing their dispersion in agro-environments. This study quantified losses of excreted Chlortetracycline, sulfamethazine, and tylosin in simulated rain runoff from surface-applied and soil-incorporated beef cattle ( L.) feedlot manure (60 Mg ha, wet wt.). Antimicrobial concentrations in runoff generally reflected the corresponding concentrations in the manure. Soil incorporation of manure reduced the concentrations of Chlortetracycline (from 75 to 12 μg L for a 1:1 mixture of Chlortetracycline and sulfamethazine and from 43 to 17 μg L for Chlortetracycline alone) and sulfamethazine (from 3.9 to 2.6 μg L) in runoff compared with surface application. However, there was no significant effect of manure application method on tylosin concentration (range, 0.02-0.06 μg L) in runoff. Mass losses, as a percent of the amount applied, for Chlortetracycline and sulfamethazine appeared to be independent of their respective soil sorption coefficients. Mass losses of Chlortetracycline were significantly reduced with soil incorporation of manure (from 6.5 to 1.7% when applied with sulfamethazine and from 6.5 to 3.5% when applied alone). Mass losses of sulfamethazine (4.8%) and tylosin (0.24%) in runoff were not affected by manure incorporation. Although our results confirm that cattle-excreted veterinary antimicrobials can be removed via surface runoff after field application, the magnitudes of Chlortetracycline and sulfamethazine losses were reduced by soil incorporation of manure immediately after application.
-
distribution of sulfamethazine Chlortetracycline and tylosin in manure and soil of canadian feedlots after subtherapeutic use in cattle
Environmental Pollution, 2008Co-Authors: Marcoliver Aust, Frauke Godlinski, Greg R Travis, Xiying Hao, T A Mcallister, Peter Leinweber, Soren ThielebruhnAbstract:Feedlots are potential point sources for the flow of antibiotics into the environment due to common use of antibiotics such as sulfamethazine, Chlortetracycline and tylosin. Hence soils and manures originating from a grassland control, an experimental and a commercial feedlot were analyzed and mass balances were calculated for these antibiotics. Up to 9990 μg kg−1 sulfamethazine and 401 μg kg−1 Chlortetracycline on a dry matter basis were determined in feedlot manure. Soil concentrations were two orders of magnitude smaller. This corresponds to 7–40% of the calculated residual amount. In the commercial feedlot Chlortetracycline was found down to soil depths of −40 cm; sulfamethazine was still detectable 1 year after medication. Sulfamethazine and Chlortetracycline were additionally determined in manure of a control treatment in the experimental feedlot where cattle never received antibiotics. This was attributed to runoff from upslope pens. Consequently, antibiotics partially persist within feedlots and may be dislocated into the surrounding environment by vertical transport and runoff.
Soren Thielebruhn - One of the best experts on this subject based on the ideXlab platform.
-
distribution of sulfamethazine Chlortetracycline and tylosin in manure and soil of canadian feedlots after subtherapeutic use in cattle
Environmental Pollution, 2008Co-Authors: Marcoliver Aust, Frauke Godlinski, Greg R Travis, Xiying Hao, T A Mcallister, Peter Leinweber, Soren ThielebruhnAbstract:Feedlots are potential point sources for the flow of antibiotics into the environment due to common use of antibiotics such as sulfamethazine, Chlortetracycline and tylosin. Hence soils and manures originating from a grassland control, an experimental and a commercial feedlot were analyzed and mass balances were calculated for these antibiotics. Up to 9990 μg kg−1 sulfamethazine and 401 μg kg−1 Chlortetracycline on a dry matter basis were determined in feedlot manure. Soil concentrations were two orders of magnitude smaller. This corresponds to 7–40% of the calculated residual amount. In the commercial feedlot Chlortetracycline was found down to soil depths of −40 cm; sulfamethazine was still detectable 1 year after medication. Sulfamethazine and Chlortetracycline were additionally determined in manure of a control treatment in the experimental feedlot where cattle never received antibiotics. This was attributed to runoff from upslope pens. Consequently, antibiotics partially persist within feedlots and may be dislocated into the surrounding environment by vertical transport and runoff.
Yawei Feng - One of the best experts on this subject based on the ideXlab platform.
-
fabrication of bi1 81mnnbo6 72 sulfite system for efficient degradation of Chlortetracycline
Chemosphere, 2021Co-Authors: Jie Zhao, Qiang Song, Dionysios D. Dionysiou, Yawei Feng, Xinying ZhangAbstract:The design of eco-friendly Bi1.81MnNbO6.72/sulfite system for efficient degradation of Chlortetracycline was achieved. The feasibility of synthesizing Bi1.81MnNbO6.72 by hydrothermal method was determined by X-ray diffraction. The magnetic test suggested that Bi1.81MnNbO6.72 possessed paramagnetic properties, indicating unpaired electrons were present. Scanning electron microscope and transmission electron microscopy images revealed that Bi1.81MnNbO6.72 octahedra exhibited exposed [1,1,1] crystal plane containing high density of Bi, Mn and Nb metal atoms. Large numbers of metal atoms will facilitate heterogeneous catalytic process. In a batch system with aeration, Bi1.81MnNbO6.72 could be used as sulfite activator for the disposal of Chlortetracycline. The reaction kinetics of the degradation process conformed to the pseudo-second-order kinetic model. In Bi1.81MnNbO6.72/sulfite process, initial pH, Bi1.81MnNbO6.72 dosage, sulfite and Chlortetracycline concentrations, as well as inorganic salt ions had great effect on Chlortetracycline degradation. Under optimal conditions, the efficiency of Bi1.81MnNbO6.72/sulfite system for degradation of Chlortetracycline could reach 76.2%. Moreover, Mn (II) plays a key role in the initiation of the catalytic reaction in Bi1.81MnNbO6.72/sulfite process. Generated SO3●‒ could act as main reactive species in Bi1.81MnNbO6.72/sulfite process, while HO● was also involved. Three new degradation products were detected by UHPLC/MS/MS and the possible degradation pathways in this system were proposed. Based on this, we believe that Bi1.81MnNbO6.72/sulfite is a type of process for degradation of organic contaminants with research significance and application prospects.
-
Fabrication of Bi1.81MnNbO6.72/sulfite system for efficient degradation of Chlortetracycline.
Chemosphere, 2020Co-Authors: Jie Zhao, Qiang Song, Dionysios D. Dionysiou, Yawei Feng, Xinying ZhangAbstract:The design of eco-friendly Bi1.81MnNbO6.72/sulfite system for efficient degradation of Chlortetracycline was achieved. The feasibility of synthesizing Bi1.81MnNbO6.72 by hydrothermal method was determined by X-ray diffraction. The magnetic test suggested that Bi1.81MnNbO6.72 possessed paramagnetic properties, indicating unpaired electrons were present. Scanning electron microscope and transmission electron microscopy images revealed that Bi1.81MnNbO6.72 octahedra exhibited exposed [1,1,1] crystal plane containing high density of Bi, Mn and Nb metal atoms. Large numbers of metal atoms will facilitate heterogeneous catalytic process. In a batch system with aeration, Bi1.81MnNbO6.72 could be used as sulfite activator for the disposal of Chlortetracycline. The reaction kinetics of the degradation process conformed to the pseudo-second-order kinetic model. In Bi1.81MnNbO6.72/sulfite process, initial pH, Bi1.81MnNbO6.72 dosage, sulfite and Chlortetracycline concentrations, as well as inorganic salt ions had great effect on Chlortetracycline degradation. Under optimal conditions, the efficiency of Bi1.81MnNbO6.72/sulfite system for degradation of Chlortetracycline could reach 76.2%. Moreover, Mn (II) plays a key role in the initiation of the catalytic reaction in Bi1.81MnNbO6.72/sulfite process. Generated SO3●‒ could act as main reactive species in Bi1.81MnNbO6.72/sulfite process, while HO● was also involved. Three new degradation products were detected by UHPLC/MS/MS and the possible degradation pathways in this system were proposed. Based on this, we believe that Bi1.81MnNbO6.72/sulfite is a type of process for degradation of organic contaminants with research significance and application prospects.