Browse Research Projects -- Illinois Sustainable Technology Center by Issue Date

  • 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 ...

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  • 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 ...

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  • 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 ...

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  • 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 ...

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  • 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 ...

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  • Holm, Thomas R.; Scott, John W.; Wilson, Steven D.; Kelly, Walton R.; Talbott, Jonathan L.; Roadcap, George S. (Illinois Waste Management and Research Center, 2004)

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  • 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 ...

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  • 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 ...

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  • 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 ...

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  • de Mello, Jaime W.V.; Talbott, Jonathan L.; Scott, John; Roy, William R.; Stucki, Joseph W. (Champaign, IL : Illinois Sustainable Technology Center, 2006)
    Arsenic enters the environment naturally though rock weathering but its concentrations can be dramatically increased by human activity such as mining. ISTC’s senior chemist, John Scott, and collaborators from the Federal ...

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  • 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 ...

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  • Stone, Mark E.; Kuehne, John C.; Cohen, Mark E.; Talbott, Jonathan L.; Scott, John W. (Champaign, IL : Illinois Sustainable Technology Center, 2006)
    Dental amalgam is a mixture of mercury, silver, tin, and copper. Mercury typically makes up about 50% of it. The amalgam is used to provide the dental patient with a strong durable filling. Some of the dental amalgam may ...

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  • 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 ...

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  • Scott, John (2007)
    Lake Calumet in Illinois was a former glacial lake draining into Lake Michigan. After extensive industrialization and modifications to the area, it now drains to the Des Plaines River, which runs to the Mississippi River. ...

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  • 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 ...

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  • Zheng, Wei; Yates, Scott R.; Papiernik, Sharon K. (Champaign, IL : Illinois Sustainable Technology Center, 2008)
    Little is known about how popular herbicides react and degrade in soil or aquatic environments. Two of these herbicides include Pyrazosulfuron Ethyl (PE) and Halosulfuron Methyl (HM), which are part of the sulfonylurea ...

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  • Sharma, B.K. (2009)
    Jojoba (Simmondsia chinensis) grows in the arid southwestern United States. A thick wax on the outside of the plant and in its seeds helps the plants conserve water, but that's not the only thing it's good for. The wax ...

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  • Stone, Mark E.; Scott, John W.; Schultz, Stephen T.; Berry, Denise L.; Wilcoxon, Monte; Piwoni, Marvin D.; Panno, Brent; Bordson, Gary (Champaign, IL : Illinois Sustainable Technology Center, 2009)
    In drinking water treatments, a form of chlorine is used for disinfection so that bacteria do not contaminate pipes. Most drinking water treatment plants use chlorine (HOCl/OCl-), but some have switched to monochloramine ...

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  • Mensching, Donna; Beasley, Val (Champaign, IL : Illinois Sustainable Technology Center, 2009-04)
    Polybrominated diphenyl ethers (PBDEs) are ubiquitous flame retardants and known endocrine disruptors used in many household products since the 1970s. They are lipophilic and bioaccumulate, with tissue residues in humans ...

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  • Pickowitz, Joe (2010)
    ISTC researchers have joined with Partners for People and Place (PPP) to establish a biodiesel market in Haiti. The electrical grid in Haiti is spotty at best, so many houses use diesel generators for electricity. Running ...

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