K G Karthikeyan

Summary

Affiliation: University of Wisconsin
Country: USA

Publications

  1. ncbi request reprint Solution chemistry effects on orthophosphate adsorption by cationized solid wood residues
    K G Karthikeyan
    Biological Systems Engineering Department, 460 Henry Mall, University of Wisconsin, Madison, Wisconsin 53706, USA
    Environ Sci Technol 38:904-11. 2004
  2. ncbi request reprint Occurrence of antibiotics in wastewater treatment facilities in Wisconsin, USA
    K G Karthikeyan
    Department of Biological Systems Engineering, 460 Henry Mall, University of Wisconsin Madison, WI 53706, USA
    Sci Total Environ 361:196-207. 2006
  3. ncbi request reprint Corn residue level and manure application timing effects on phosphorus losses in runoff
    Joseph D Grande
    Biological Systems Engineering Department, 460 Henry Mall, University of Wisconsin, Madison, WI 53706, USA
    J Environ Qual 34:1620-31. 2005
  4. ncbi request reprint Sorption of the antibiotic tetracycline to humic-mineral complexes
    Cheng Gu
    Univ of Wisconsin Madison, Madison, WI 53706, USA
    J Environ Qual 37:704-11. 2008
  5. ncbi request reprint Complexation of the antibiotic tetracycline with humic acid
    Cheng Gu
    Environmental Chemistry and Technology Program, University of Wisconsin Madison, Madison, WI 53706, United States
    Chemosphere 66:1494-501. 2007
  6. ncbi request reprint Interaction of tetracycline with aluminum and iron hydrous oxides
    Cheng Gu
    Environmental Chemistry and Technology Program, University of Wisconsin Madison, Madison, Wisconsin 53706, USA
    Environ Sci Technol 39:2660-7. 2005
  7. ncbi request reprint Determination of phosphorus speciation in dairy manure using XRD and XANES spectroscopy
    Kerem Güngör
    Biological Systems Engineering Dep, University of Wisconsin Madison, 460 Henry Mall, Madison, WI 53706, USA
    J Environ Qual 36:1856-63. 2007
  8. doi request reprint Phosphorus flow and characterization in dry-grind corn ethanol plants
    A Alkan-Ozkaynak
    Department of Biological Systems Engineering, University of Wisconsin, Madison, WI, USA
    J Environ Qual 41:1695-701. 2012
  9. ncbi request reprint Phosphorus forms and extractability in dairy manure: a case study for Wisconsin on-farm anaerobic digesters
    Kerem Güngör
    Biological Systems Engineering Department, University of Wisconsin Madison, Madison, WI 53706, USA
    Bioresour Technol 99:425-36. 2008
  10. doi request reprint Copper and cadmium sorption onto kraft and organosolv lignins
    Hengky Harmita
    Department of Biological Systems Engineering, University of Wisconsin Madison, 460 Henry Mall, Madison, WI 53706, USA
    Bioresour Technol 100:6183-91. 2009

Collaborators

Detail Information

Publications20

  1. ncbi request reprint Solution chemistry effects on orthophosphate adsorption by cationized solid wood residues
    K G Karthikeyan
    Biological Systems Engineering Department, 460 Henry Mall, University of Wisconsin, Madison, Wisconsin 53706, USA
    Environ Sci Technol 38:904-11. 2004
    ..e., 2.5-3 for SO4(2-) and 25 for NO3-, to cause appreciable reduction. These results support our hypothesis that adsorption of orthophosphate anions on cationized bark involves ion exchange and other specific Lewis acid-base interactions...
  2. ncbi request reprint Occurrence of antibiotics in wastewater treatment facilities in Wisconsin, USA
    K G Karthikeyan
    Department of Biological Systems Engineering, 460 Henry Mall, University of Wisconsin Madison, WI 53706, USA
    Sci Total Environ 361:196-207. 2006
    ..Future intensive wastewater monitoring programs in Wisconsin may be limited to the six antibiotic compounds detected in this study...
  3. ncbi request reprint Corn residue level and manure application timing effects on phosphorus losses in runoff
    Joseph D Grande
    Biological Systems Engineering Department, 460 Henry Mall, University of Wisconsin, Madison, WI 53706, USA
    J Environ Qual 34:1620-31. 2005
    ....
  4. ncbi request reprint Sorption of the antibiotic tetracycline to humic-mineral complexes
    Cheng Gu
    Univ of Wisconsin Madison, Madison, WI 53706, USA
    J Environ Qual 37:704-11. 2008
    ..It, therefore, appears that the presence of humic substances, in both dissolved and mineral-bound forms, is likely to increase the environmental mobility of tetracycline compounds...
  5. ncbi request reprint Complexation of the antibiotic tetracycline with humic acid
    Cheng Gu
    Environmental Chemistry and Technology Program, University of Wisconsin Madison, Madison, WI 53706, United States
    Chemosphere 66:1494-501. 2007
    ..Sorption-desorption hysteresis was observed; both sorption and desorption isotherms were well described by the Freundlich equation...
  6. ncbi request reprint Interaction of tetracycline with aluminum and iron hydrous oxides
    Cheng Gu
    Environmental Chemistry and Technology Program, University of Wisconsin Madison, Madison, Wisconsin 53706, USA
    Environ Sci Technol 39:2660-7. 2005
    ..Our research findings will increase understanding of the environmental occurrence, fate, and transport characteristics of antibiotics, which are considered as emerging organic contaminants...
  7. ncbi request reprint Determination of phosphorus speciation in dairy manure using XRD and XANES spectroscopy
    Kerem Güngör
    Biological Systems Engineering Dep, University of Wisconsin Madison, 460 Henry Mall, Madison, WI 53706, USA
    J Environ Qual 36:1856-63. 2007
    ....
  8. doi request reprint Phosphorus flow and characterization in dry-grind corn ethanol plants
    A Alkan-Ozkaynak
    Department of Biological Systems Engineering, University of Wisconsin, Madison, WI, USA
    J Environ Qual 41:1695-701. 2012
    ..Our results would help track P movement during various dry-grind processing steps and formulate strategies for phytase enzyme supplementation to various postfermentation coproducts from corn-ethanol plants...
  9. ncbi request reprint Phosphorus forms and extractability in dairy manure: a case study for Wisconsin on-farm anaerobic digesters
    Kerem Güngör
    Biological Systems Engineering Department, University of Wisconsin Madison, Madison, WI 53706, USA
    Bioresour Technol 99:425-36. 2008
    ..Anaerobic digestion of dairy manure appears capable of reducing the fraction of P that is immediately available by increasing the stability of the solid phases controlling P solubility...
  10. doi request reprint Copper and cadmium sorption onto kraft and organosolv lignins
    Hengky Harmita
    Department of Biological Systems Engineering, University of Wisconsin Madison, 460 Henry Mall, Madison, WI 53706, USA
    Bioresour Technol 100:6183-91. 2009
    ..Additional pretreatment and surface modifications of these biosorbents might be required to increase metal sorption capacity and enhance their use in waster/wastewater treatment...
  11. ncbi request reprint Sorption of the antimicrobial ciprofloxacin to aluminum and iron hydrous oxides
    Cheng Gu
    Department of Biological Systems Engineering, Environmental Chemistry and Technology Program, University of Wisconsin, Madison 53706, USA
    Environ Sci Technol 39:9166-73. 2005
    ..The study results are expected to increase our understanding of the environmental reactivity of fluoroquinolones, an important class of antimicrobial compounds...
  12. doi request reprint Anaerobic digestion of thin stillage for energy recovery and water reuse in corn-ethanol plants
    A Alkan-Ozkaynak
    Department of Biological Systems Engineering, University of Wisconsin Madison, 460 Henry Mall, Madison, WI, USA
    Bioresour Technol 102:9891-6. 2011
    ..Anaerobic digestion of treated-thin stillage can be expected to improve the water and energy efficiencies of dry grind corn-ethanol plants...
  13. ncbi request reprint Instrumentation for measuring runoff, sediment, and chemical losses from agricultural fields
    Carlos A Bonilla
    Department of Soil Science, University of Wisconsin Madison, 1525 Observatory Drive, Madison, WI 53706, USA
    J Environ Qual 35:216-23. 2006
    ..This article includes a description of the equipment, advantages, and disadvantages based on 2 yr of operation, and examples of data collected...
  14. ncbi request reprint Residue level and manure application timing effects on runoff and sediment losses
    Joseph D Grande
    Biological Systems Engineering Department, University of Wisconsin, Madison, WI 53706, USA
    J Environ Qual 34:1337-46. 2005
    ..Recently applied manure and higher residue levels achieved by high-cutting silage can substantially lower sediment losses in spring runoff when soil is most susceptible to erosion...
  15. ncbi request reprint Phosphorus dynamics in soils receiving chemically treated dairy manure
    M Kalbasi
    Biological Systems Engineering Department, 460 Henry Mall, University of Wisconsin, Madison, WI 53706, USA
    J Environ Qual 33:2296-305. 2004
    ..The study results will help bridge the gap between our knowledge of chemical treatment systems for animal manure and the ultimate fate of P when the treated manure is land-applied...
  16. ncbi request reprint Humic acid complexation of basic and neutral polycyclic aromatic compounds
    K G Karthikeyan
    Department of Biological Systems Engineering, The University of Wisconsin, Madison 53706, USA
    Chemosphere 48:955-64. 2002
    ..In contrast to ionizable PACs, studied here and previously, interaction of naphthalene with HA is unaffected by changes in solution conditions (pH, ionic strength)...
  17. ncbi request reprint Adsorption mechanism of cadmium on juniper bark and wood
    Eun Woo Shin
    School of Chemical Engineering and Bioengineering, University of Ulsan, San 29, Mugeo dong, Nam Gu, Ulsan 680 749, South Korea
    Bioresour Technol 98:588-94. 2007
    ..The higher Ca content in JB (15 times more) and the surface RCOOH concentration (2.5 times more) can be attributed to the observed differences in Cd adsorption behavior between the two lignocellulosic adsorbents...
  18. ncbi request reprint Orthophosphate sorption onto lanthanum-treated lignocellulosic sorbents
    Eun Woo Shin
    School of Chemical Engineering and Bioengineering, University of Ulsan, San 29, Muger 2 dong, Nam Ku, Ulsan 680 749, South Korea
    Environ Sci Technol 39:6273-9. 2005
    ..Results from X-ray diffraction and infrared spectrometric analyses are also suggestive of the occurrence of surface precipitation during the interaction of orthophosphate with La-treated lignocellulosic materials...
  19. ncbi request reprint Linking cesium and strontium uptake to kaolinite weathering in simulated tank waste leachate
    Jon Chorover
    Department of Soil, Water and Environmental Science, University of Arizona, Tucson, Arizona 85721, USA
    Environ Sci Technol 37:2200-8. 2003
    ..Discrete strontium silicate solids were also observed. The incongruent dissolution of kaolinite promoted the sequestration of contaminants into increasingly recalcitrant solid phases over the 1-yr time period...
  20. ncbi request reprint Cesium adsorption on clay minerals: an EXAFS spectroscopic investigation
    Benjamin C Bostick
    Stanford University, Department of Geological and Environmental Sciences, California 94305 2115, USA
    Environ Sci Technol 36:2670-6. 2002
    ..Our results show that X-ray absorption spectroscopy (XAS), and particularly EXAFS, is a valuable technique for exploring the type of Cs binding in environmental samples...