Geochemistry Department Staff

Vita

Pengchu Zhang is a senior member of the technical staff at Sandia National Laboratories. His research interests include transformation of minerals in soil and aqueous systems, speciation of metals in soils, chemical processes occurring on the surfaces of environmental particles, and geochemistry of xenobiotic organic compounds in soils and groundwater.

Recent Publications

• Zhang, P. J. Ryan, and T. Brynzine. 1997. Pyromorphite formation from goethite adsorbed Pb. Environ. Sci. & Technol. 31:2673-2678.
• Zhang, P., and D. L. Sparks. 1993. Kinetics of phenol and aniline adsorption and desorption on an organo-clay (HDTMA-montmorillonite). Soil Sci. Soc. Am. J. 57:340-345.
• Sparks, D. L., and P. Zhang. 1991. Relaxation Methods for Studying Kinetics of Soil Chemical Phenomena. Chapter 3 in Sparks, D. L. and D. L. Suarez (eds.) "Rates of Soil Chemical Processes". Soil Sci. Soc. Am. Special Publication No. 27. Madison, Wisconsin
• Zhang, P., and D. L. Sparks. 1990. Kinetics of selenate and selenite adsorption/desorption on goethite/water interface. Environ. Sci. & Tech., 24:1848-1856.
• Zhang, P. and D. L. Sparks, 1990. Kinetics and mechanism of sulfate adsorption and desorption on the goethite surface. Soil Sci. Soc. Am. J. 54:1266-1273.
• Zhang, P., and D. L. Sparks. 1989. Kinetics of molybdate adsorption/desorption at the goethite/water interface using pressure-jump relaxation. Soil Sci. Soc. Am. J. 53:1028-1034.
• Sparks, D. L., S. E. Fendorf, P. Zhang, and L. Tang. 1993. Kinetics and mechanisms of environmentally important reaction on soil colloidal surfaces. In D. Petruzzelli and F.G. Helfferich (eds.) "Migration and Fate of Pollutants in Soils and Subsoils". NATO ASI Series, V. G32, 141-167. Springer-Verlag, Berlin Heidelberg.
• Zhang, P., R. J. Scrudato, and G. Germeno, 1994. Solarcatalytic inactivation of E. coli in aqueous solution using TiO2 as a catalyst. Chemosphere. 28:607-611.
• Zhang, P., and R. J. Scrudato. 1994. Remediation of contaminated water and sediments using photocatalytic processes. Environment 1994/South proceeding. Orlando, FL.
• Zhang, P., R. J. Scrudato, J. J. Pagano, and R. N. Roberts, 1993. Photodecomposition of PCBs in Aqueous Systems. In D. Ollis (ed.) "TiO2 Photocatalytic Purification and Treatment of Water and Air''. Elsevier Sci. Pub.
• Zhang, P., R. J. Scrudato, J. J. Pagano, and R. N. Roberts, 1993. Photodecomposition of PCBs in Aqueous Systems Using TiO2 as a Catalyst. Chemosphere. 26:1213-1223.
• Zhang, P., T. J. Ganje, A. L. Page, and A. C. Chang. 1988. Growth and uptake of selenium by Swiss chard in acid and neutral soils. J. Environ. Quality, 17:314-316.