Chelating Agents

Chelating agents are used throughout industrial and consumer products and processes to control metal concentrations.    In the case of chelates, we have evaluated the formation of interemediates through (1) development of new analytical techniques for their concurrent detection, (2) determination of bacterial yield on EDTA and NTA and their formed intermediates, and (3) tracking intermediates during the course of degradation under various environmental conditions.

Yuan, Z. and VanBriesen, J.M., (2008) “Bacterial growth yields on EDTA, NTA, and their biodegradation intermediates, ”  Biodegradation 19(2): 41-52.  Full text PDF.

Yuan, Zhiwen and VanBriesen, J.M.(2006)  “Intermediate formation in biodegradation of EDTA and NTA,” Environmental Engineering Science 23(3): 533-544. Full text PDF.

Weber, C.L., VanBriesen, J.M. and Small, M.J. (2006) "A stochastic regression approach to analyzing thermodynamic uncertainty in chemical speciation modeling,"  Environmental Science and Technology, 40(12): 3872-3878.  Full Text PDF.

Nowak, B. and VanBriesen, J.M. (editors) Biogeochemistry of Chelating Agents, ACS Symposium Series 910. Oxford University Press for the American Chemical Society, Washington DC 2005.

Nowack, B. and VanBriesen, J.M. “Chelating agents in the environment,” in Biogeochemistry of Chelating Agents (B. Nowack and JM. VanBriesen, editors; ACS Symposium Series 910) Oxford University Press for the American Chemical Society, Washington DC 2005; pp. 1-18. 

Yuan, Z. and VanBriesen, J.M. “Analysis of biodegradation intermediate of ethylenediaminetetraacetate (EDTA) and nitrilotriacetate (NTA) by high performance liquid chromatography (HPLC)”  in Biogeochemistry of Chelating Agents (B. Nowack and JM. VanBriesen, editors; ACS Symposium Series 910) Oxford University Press for the American Chemical Society, Washington DC 2005; pp. 139-148.

Yuan, Z., and VanBriesen, J.M. “Measuring cell yields on NTA, EDTA, and their biodegradation intermediates using batch reactors,” American Chemical Society Annual Meeting Abstracts, September 2003, New York, NY.

Rittmann, B.E., Banaszak, J.E.,VanBriesen, J.M. and Reed, D.T. (2002) “Mathematical modeling of precipitation and dissolution reactions in microbiological systems,” Biodegradation 13(4): 239-251. Full Text OnLine.

Yuan, Z, and VanBriesen, J.M. “Analysis of intermediates of EDTA biodegradation by HPLC,” American Chemical Society Annual Meeting Abstracts, August 2002, Boston, MA.

Rittmann, B.E., VanBriesen, J.M., Schwartz, A., “Modeling Coupled Biogeochemical Processes,” Association for Environmental Engineering and Science Professors Research and Education Conference, Meeting Abstracts, August 2002, Toronto, Canada. 

VanBriesen, J.M., Rittmann, B.E., Xun, L., Girvin, D.C., Bolton, H. Jr. (2000) “The rate controlling substrate of nitrilotriacetate for biodegradation by Chelatobacter heintzii,”  Environmental Science and Technology,  34: 3346-3353.  Full Text OnLine.

VanBriesen, J.M. and Rittmann, B.E. (2000) “Modeling speciation effects on biodegradation in mixed metal/chelate systems,” Biodegradation 10:315-330.  Full Text OnLine.

VanBriesen, J.M. Rittmann, B.E. “Modeling Biogeochemical Interactions in Co-Contaminant Systems,” Abstract in Proceedings of the 220^th National Meeting of the American Chemical Society, August 2000, Washington DC.  Extended abstract as PDF OnLine.

Banaszak, J.E., VanBriesen, J.M., Rittmann, B.E., Reed, D.T. (1998) “Mathematical Modeling of the Effects of Aerobic and Anaerobic Chelate Biodegradation on Actinide Speciation,” Radiochimica Acta, 82: 445-451.   Online Citation.

Tebes-Stevens, C., Valocchi, A.J., VanBriesen, J.M., and Rittmann, B.E. (1998) “Multicomponent transport with coupled geochemical and microbiological reactions: model description and example simulations,” Journal of Hydrology, 209: 8-26. Full Text OnLine.

Rittmann, B.E., and J.M. VanBriesen (1996) "Microbiological Processes in Reactive Modeling,"  in "Reviews in Mineralogy" (P.C.Lichtner, C.I. Steefel, and E.H. Oelkers, eds) Vol 34: Reactive Transport in Porous Media, p. 311.  Mineralogical Society of America, 1996.