Browse Prairie Research Institute by Author "Rajagopalan, Nandakishore"

  • Wentz, John E.; Kapoor, Shiv G.; DeVor, Richard E.; Rajagopalan, Nandakishore (Champaign, IL : Illinois Waste Management and Research Center, 2007-12)
    This research seeks to investigate the applicability of microfiltration technology by investigating the membrane fouling mechanisms at work in the system. It also aims to reduce fouling through adjustment of operating ...

    application/pdf

    application/pdfPDF (7MB)
  • Rajagopalan, Nandakishore; Wentz, J.E.; Kapoor, S.G.; DeVor, R.E. (Champaign, IL : Illinois Sustainable Technology Center, 2006)
    Microfiltration can increase the service life of metalworking fluid by removing contaminants. However, membranes quickly become clogged, a process known as fouling. Anti-fouling methods in practice in the mid-2000s involved ...

    application/pdf

    application/pdfPDF (57kB)
  • Salih, Hafiz; Patel, Vinod; Rajagopalan, Nandakishore (Champaign, IL : Illinois Sustainable Technology Center, 2015)
    Dewatering has been a technical and economical barrier to the stabilization of coal tailings and the utilization of ultrafine coal particles from coal preparation. While substantial progress continues to be made in ...

    application/pdf

    application/pdfPDF (1MB)
  • Eppert, Joseph J.; DeVor, Richard E.; Kapoor, Shiv G.; Rajagopalan, Nandakishore (Champaign, IL : Illinois Sustainable Technology Center, 2003)
    Some metalworking fluids are designed to coat the surfaces of newly machined metal with rust inhibitors. At some point, these inhibitors are expected to become depleted in the metalworking fluid. How quickly does this ...

    application/pdf

    application/pdfPDF (54kB)
  • Rajagopalan, Nandakishore; Lindsey, Tim; Skerlos, Steven J. (Champaign, IL : Illinois Sustainable Technology Center, 2001)
    The use of ultrafiltration (UF) applications with alkaline cleaners was a common practice as of 2001, but at the time UF was still susceptible to fouling and stripping out active agents from the cleaners. ISTC’s Kishore ...

    application/pdf

    application/pdfPDF (55kB)
  • Rajagopalan, Nandakishore; Menniti, Adrienne; Kramer, Timothy A.; Clark, Mark M. (Champaign, IL : Illinois Sustainable Technology Center, 2005)
    Metalworking fluids are used for cooling, lubrication, and corrosion control in the metal products industry. As of the mid-2000s, many manufacturers were using filtration or centrifugal systems to remove impurities from ...

    application/pdf

    application/pdfPDF (63kB)
  • Wentz, John E.; Kapoor, Shiv G.; DeVor, Richard E.; Rajagopalan, Nandakishore; Gilmer, Jessica; Eppert, J.J. (Champaign, IL : Illinois Sustainable Technology Center, 2007)
    It was initially thought that no metalworking fluid could be developed to meet industry specifications and be compatible with membranes to use microfiltration to remove contaminants. However, Rajagopalan’s team developed ...

    application/pdf

    application/pdfPDF (56kB)
  • Plewa, Michael; Rajagopalan, Nandakishore; Wagner, Elizabeth D. (Champaign, IL : Illinois Sustainable Technology Center, 2015-03)
    This toxicological research was conducted to aid in the development of a multicriteria decision-making tool to facilitate selection of functional yet greener and safer metalworking fluids (MWF). This research also satisfies ...

    application/pdf

    application/pdfPDF (1MB)
  • Rajagopalan, Nandakishore; Greeley, M. (Champaign, IL : Illinois Sustainable Technology Center, 2003)
    Kishore Rajagopalan and his colleague explored how contaminants like tramp oils and salts impact the productivity of recycled metalworking fluids. They found that metalworking fluids had no losses in cooling and lubricating ...

    application/pdf

    application/pdfPDF (57kB)
  • Rajagopalan, Nandakishore; Skerlos, Steven J.; DeVor, Richard E.; Kapoor, Shiv G.; Angspatt, V. Don (Champaign, IL : Illinois Sustainable Technology Center, 1999)
    A ceramic membrane filtration system can be an effective tool to increase the lifespan of medalworking fluids and reduce biological hazards. However, the usefulness of the membranes may be reduced by different additives ...

    application/pdf

    application/pdfPDF (60kB)
  • Eppert, Joseph J.; Rajagopalan, Nandakishore; DeVor, Richard E.; Kapoor, Shiv G. (Champaign, IL : Illinois Sustainable Technology Center, 2003)
    Metalworking fluids are designed to perform specified tasks in the factory. However, these fluids can become contaminated during the manufacturing process by other factory components such as tramp oil. As more and more ...

    application/pdf

    application/pdfPDF (52kB)
  • Small, Brian; Rajagopalan, Nandakishore; Quagrainie, Kwamena (Champaign, IL : Illinois Sustainable Technology Center, 2014-03)
    A considerable quantity of saline water is available in Illinois to support the needs of a marine aquaculture industry. The sources vary from isolated, deep rock aquifers to industrial effluents. In the present study, ...

    application/pdf

    application/pdfPDF (790kB)
  • Wentz, John E.; Kapoor, Shiv G.; DeVor, Richard E.; Rajagopalan, Nandakishore (Champaign, IL : Illinois Sustainable Technology Center, 2008)
    ISTC’s Kishore Rajagopalan and colleagues from the University of Illinois discovered that partial blocking of pore spaces from microemulsion aggregation was a new fouling mechanism leading to total pore space blocking and ...

    application/pdf

    application/pdfPDF (53kB)
  • Ganguly, Srirupa; Rajagopalan, Nandakishore; Narula, A.; Li, J. (Champaign, IL : Illinois Sustainable Technology Center, 2016)
    Poster summarizes the results of a study of wastewater treatment plants in Illinois with an emphasis on performance metrics. A survey was sent out to over 200 wastewater treatment plants in IL, of which 77 plants responded. ...

    application/pdf

    application/pdfPDF (925kB)
  • Rajagopalan, Nandakishore; Rusk, Todd; Dianovsky, Michael (Champaign, IL : Illinois Sustainable Technology Center, 2004)
    Since the early 2000s, industries have faced rising costs to acquire, manage, and dispose of metalworking fluids, as well as increased concern about pathogenic bacteria growing in metalworking processes. The need to reduce ...

    application/pdf

    application/pdfPDF (57kB)
  • Deluhery, Jennifer; Chen, Shu; Rajagopalan, Nandakishore (2011)
    The goals of this project were to benchmark water use in cooling towers & at the Abbott RO Plant on the University of Illinois at Urbana-Champaign campus and generate ideas for improving water use efficiency.

    application/pdf

    application/pdfPDF (6MB)
  • Rajagopalan, Nandakishore; Deluhery, Jennifer (Champaign, IL : Illinois Sustainable Technology Center, 2005)
    Metalworking fluids are an emulsion of oil in water. The emulsion stability goes down with increased harness ions such as calcium and magnesium. Typical tests for emulsion stability involve the determination of oil losses ...

    application/pdf

    application/pdfPDF (117kB)
  • Zheng, Wei; Sharma, B.K.; Rajagopalan, Nandakishore (2010-12)
    Biochar is a charred carbon-enriched material intended to be used as a soil amendment to sequester carbon and enhance soil quality. Sustainable biochar is produced from waste biomass using modern thermochemcial technologies. ...

    application/pdf

    application/pdfPDF (3MB)
  • Rajagopalan, Nandakishore; Chandrasekaran, Sriraam R. (Champaign, IL : Illinois Sustainable Technology Center, 2016)
    The U.S. Forestry Service (USFS) engaged sustainability experts at the University of Illinois, Western Illinois University (WIU), and the Metropolitan Mayors Caucus to investigate the use of wood waste by businesses as a ...

    application/pdf

    application/pdfPDF (434kB)