|Posted by Steve Higgins on June 26, 2012 at 12:00 AM|
244th ACS NationalMeeting - Philadelphia PA: 17-20 August 2012
Geochemistry Division Sessions
Geochemistry and Environmental Issues Associated with Shale Gas Extraction
The confirmation of very large natural gas deposits in shale formations worldwide, combined with technological advances in the fields of hydraulic fracturing and horizontal drilling, may potentially be the biggest game changer in the energy landscape. Hydraulic fracturing requires the use of large volumes of fracturing fluids (i.e., water, sand, chemical amendments, etc.). The disposal and/or reclamation of wastewater (frac return water) produced by the hydro-fracture well stimulation process and the potential contamination of groundwater resources have been identified as important environmental issues affecting the long-term viability of shale gas extraction. This session aims to address broad geochemistry issues involved in the extraction of shale gas, such as water treatment, water reclamation, groundwater contamination, gaseous emissions, etc.
1 Center for Environmental Systems / CivilEnvironmental and Ocean Engineering Department, Stevens Institute of Technology,Hoboken, NJ 07030.
2 Department of Mechanical, Civil andEnvironmental Engineering, University of New Haven, West Haven, CT, 06516.
Applications ofAdvanced Analytical Methods in Petroleum Geochemistry
Complexity and diversity ofpetroleum organic matter lead us to use a variety of instrumental tools. Thissymposium will focus on research highlighting the molecular-leveldescription of processes or characterization of petroleum organic matter, such as but not limited tokerogen characterization, studies on solid bitumens, effect ofmaturation, source organic matter characteristics, quantifyingbiodegradation, assessing tar sands, etc. These studies should employprimarily advanced spectroscopic techniques including but not limited to ultrahighresolution FT-MS and NMR. Others analytical approaches such as IR, Raman, or GCxGC are also welcome.
Molecular Approaches to Investigate Processes at the Mineral-WaterInterface
The mineral-water interface is acomplex and dynamic system where multiple reactions, such as adsorption,dissolution-precipitation, redox, and photocatalysis, may occur depending onthe specific mineralogy, surface chemistry, and environmental conditions. Theseprocesses render the mineral-water interface as a concentrating agent forinorganic/organic components in the aqueous phase and as a reactive center for(im)mobilizing and transforming the adsorbed species at various scales innatural environments. Understanding the molecular-level mechanisms bywhich these interfacial processes occur has a wide range of applications indiverse settings, including, but not limited to, prediction and control of thefate and transport of metal and nuclear contaminants and nanoparticles, CO2sequestration via mineral carbonation, catalysis of organic compounds viamineral surface adsorption, mineral asbestos hazards, and biologically-mediatedweathering and mineralization.
The proposed session aims tobring together the up-to-date studies on mineral-water interfacial chemistryusing molecular approaches and identify salient future questions in the field.We encourage the attendance of both experimentalists and modelers. Topicswithin this theme include, but are not limited to: (1) structure and reactivityof the mineral-water interface (including surface complexation modeling); (2)water structure and chemistry at the mineral-water interface; (3) kineticstudies on mineral growth and dissolution; (4) characterization of structuralincorporation of inorganic/organic components into mineral phases; and (5)measurement of electron transfers at the mineral-water interface.
1 Department of Chemistry, George Washington University, Washington,D.C., 20052,
2 Department of Civil Engineering & Geological Sciences,University of Notre Dame, Notre Dame, IN 46556
Trace Metal-Mineral Interactionsin the Environment
The transport, speciation andbioavailability of trace metal compounds in soils and sediments can be heavilyinfluenced by interactions with mineral surfaces. Mineral phases can serve as areaction surface for trace metals, as a source or sink in exchanges with theaqueous solution, and a platform for metal interactions with microbes or otherchemical compounds. This proposedsession invites papers that address one or more of the following themes from anexperimental or modeling perspective: 1) trace metal adsorption andprecipitation reactions at mineral surfaces; 2) trace metal incorporation intooxides, clays or other soil or sediment minerals; 3) preferential leaching orweathering of trace metals from existing mineral phases; 4) the reactivity oftrace metals substituted into mineral structures; or 5)mineral surfaceinteractions between metals and microbes and/or organic matter.
Organizer: Edward (Ted) Peltier ([email protected])
Department of Civil, Environmental and ArchitecturalEngineering, University of Kansas, Lawrence, KS 66045.
The general poster session calls for abstracts that are different fromthe themes of the above sessions or are from scientists who are interested inpresented their results in a poster format. The posters are eligible to be partof the Science Mix during the meeting.
Organizer: Martial Taillefert([email protected])
School of Earth andAtmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332.