Surface Complexation Modeling - by Athanasios K Karamalidis & David A Dzombak (Hardcover)

Book Synopsis

This book provides a description of the generalized two layer surface complexation model, data treatment procedures, and thermodynamic constants for sorption of metal cations and anions on gibbsite, the most common form of aluminum oxide found in nature and one of the most abundant minerals in soils, sediments, and natural waters. The book provides a synopsis of aluminum oxide forms and a clearly defined nomenclature. Compilations of available data for sorption of metal cations and anions on gibbsite are presented, and the results of surface complexation model fitting of these data are given. The consistency of the thermodynamic surface complexation constants extracted from the data is examined through development of linear free energy relationships which are also used to predict thermodynamic constants for ions for which insufficient data are available to extract constants. The book concludes with a comparison of constants extracted from data for sorption on gibbsite with those determined previously for hydrous ferric oxide (HFO), hydrous manganese oxide (HMO), and goethite.

The overall objective of this book is the development and presentation of an internally consistent thermodynamic database for sorption of inorganic cations and anions on gibbsite, an abundant and reactive mineral in soils, sediments, and aquatic systems. Its surface has a high affinity for sorption of metal cations and anions, including radionuclides. The gibbsite database will enable simulation and prediction of the influence of sorption on the fate of these chemical species in natural systems and treatment processes in which aluminum oxides are abundant. It thus will help to advance the practical application of surface complexation modeling.

From the Back Cover

Whether interested in making practical thermodynamic calculations, or in reflecting on the fundamental nature of the interactions at interfaces, we should be thankful to Athanasios Karamalidis and David Dzombak for this new opus.
--From the Foreword by FranÇois M. M. Morel, Albert G. Blank Jr. Professor of Geosciences, Princeton University

An important guide to the theory and practical application of surface complexation modeling for metal ion sorption on gibbsite

This insightful and pioneering work is a state-of-the-art, and practical treatise of surface complexation modeling of metal ion sorption on an important hydrous aluminum oxide--gibbsite--the most common form of aluminum oxide found in nature and one of the most abundant minerals in soils, sediments, and natural water.

Providing a synopsis of aluminum oxide forms and a clearly defined nomenclature for this class of minerals, Surface Complexation Modeling: Gibbsite uses the generalized two-layer surface complexation model, and demonstrates how to conduct mechanistic yet practical modeling of the sorption of metal ions and other inorganic species on hydrous metal oxides. Building on and extending to gibbsite the classic related work on hydrous ferric oxide by Dzombak and Morel, published in 1990, this book:

• Presents a clarifying nomenclature for aluminum oxide minerals
• Provides a detailed look at the physical and chemical mechanisms responsible for the sorption of solutes on oxidic mineral surfaces
• Develops and presents a database for the modeling of metal cations and anions on gibbsite
• Gives a comparison of constants extracted from data for sorption on gibbsite with the constants determined previously for hydrous ferric oxide, the iron oxide goethite, and hydrous manganese oxide
• Presents a methodology for estimating surface complexation constants for ions for which sorption data are limited

By bringing together and synthesizing available data and modeling methods for sorption on gibbsite, the authors present tools that will aid the study of the surface chemistry of this highly prolific, and extremely important, mineral, and will facilitate the practical application of surface complexation modeling.

About the Author

ATHANASIOS K. KARAMALIDIS is a Research Assistant Professor in the Department of Civil and Environmental Engineering at Carnegie Mellon University. He has conducted research on the dissolution and surface reactions of complex mineral assemblages in aqueous systems. He has published his work in peer-reviewed international journals in environmental engineering and science, and in the proceedings of international conferences.

DAVID A. DZOMBAK is the Walter J. Blenko Sr. Professor of Environmental Engineering in the Department of Civil and Environmental Engineering at Carnegie Mellon University. He is also Faculty Director of the Steinbrenner Institute for Environmental Education and Research. He has published numerous articles in leading environmental engineering and science journals, book chapters, articles for the popular press, and has authored two books.